diff --git a/tests/msc_vlr/msc_vlr_test_authen_reuse.err b/tests/msc_vlr/msc_vlr_test_authen_reuse.err
index 7f38127..56da5b9 100644
--- a/tests/msc_vlr/msc_vlr_test_authen_reuse.err
+++ b/tests/msc_vlr/msc_vlr_test_authen_reuse.err
@@ -15,12 +15,12 @@
 DVLR vlr_lu_fsm(IMSI-901700000010650:GERAN-A-0:LU){VLR_ULA_S_IDLE}: is child of RAN_conn(IMSI-901700000010650:GERAN-A-0:LU)
 DVLR vlr_lu_fsm(IMSI-901700000010650:GERAN-A-0:LU){VLR_ULA_S_IDLE}: rev=R99 net=GERAN Auth (no Ciph)
 DVLR vlr_lu_fsm(IMSI-901700000010650:GERAN-A-0:LU){VLR_ULA_S_IDLE}: Received Event VLR_ULA_E_UPDATE_LA
-DREF VLR subscr unknown usage increases to: 1
+DREF VLR subscr unknown + _lu_fsm_associate_vsub: now used by 1 (_lu_fsm_associate_vsub)
 DVLR set IMSI on subscriber; IMSI=901700000010650 id=901700000010650
 DVLR New subscr, IMSI: 901700000010650
-DREF VLR subscr IMSI-901700000010650 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650 + conn: now used by 2 (_lu_fsm_associate_vsub,conn)
 DMM RAN_conn(IMSI-901700000010650:GERAN-A-0:LU){RAN_CONN_S_NEW}: Updated ID
-DREF VLR subscr IMSI-901700000010650 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650 - _lu_fsm_associate_vsub: now used by 1 (conn)
 DVLR vlr_lu_fsm(IMSI-901700000010650:GERAN-A-0:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1()
 DVLR vlr_lu_fsm(IMSI-901700000010650:GERAN-A-0:LU){VLR_ULA_S_IDLE}: state_chg to VLR_ULA_S_WAIT_AUTH
 DVLR VLR_Authenticate(IMSI-901700000010650:GERAN-A-0:LU){VLR_SUB_AS_NEEDS_AUTH}: Allocated
@@ -38,7 +38,7 @@
 - from HLR, rx _SEND_AUTH_INFO_RESULT, only one tuple; VLR sends Auth Req to MS
 <-- GSUP rx OSMO_GSUP_MSGT_SEND_AUTH_INFO_RESULT: 0a010809710000000156f00362201039fa2f4e3d523d8619a73b4f65c3e14d21049b36efdf2208059a4f668f6fbe39231027497388b6cb044648f396aa155b95ef2410f64735036e5871319c679f4742a75ea125108704f5ba55f30000d2ee44b22c8ea9192708e229c19e791f2e41
 DVLR GSUP rx 111: 0a010809710000000156f00362201039fa2f4e3d523d8619a73b4f65c3e14d21049b36efdf2208059a4f668f6fbe39231027497388b6cb044648f396aa155b95ef2410f64735036e5871319c679f4742a75ea125108704f5ba55f30000d2ee44b22c8ea9192708e229c19e791f2e41
-DREF VLR subscr IMSI-901700000010650 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650 + vlr_gsupc_read_cb: now used by 2 (conn,vlr_gsupc_read_cb)
 DVLR VLR_Authenticate(IMSI-901700000010650:GERAN-A-0:LU){VLR_SUB_AS_NEEDS_AUTH_WAIT_AI}: Received Event VLR_AUTH_E_HLR_SAI_ACK
 DVLR SUBSCR(IMSI-901700000010650) Received 1 auth tuples
 DVLR VLR_Authenticate(IMSI-901700000010650:GERAN-A-0:LU){VLR_SUB_AS_NEEDS_AUTH_WAIT_AI}: state_chg to VLR_SUB_AS_WAIT_RESP
@@ -47,7 +47,7 @@
 - ...rand=39fa2f4e3d523d8619a73b4f65c3e14d
 - ...autn=8704f5ba55f30000d2ee44b22c8ea919
 - ...expecting res=e229c19e791f2e41
-DREF VLR subscr IMSI-901700000010650 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650 - vlr_gsupc_read_cb: now used by 1 (conn)
 <-- GSUP rx OSMO_GSUP_MSGT_SEND_AUTH_INFO_RESULT: vlr_gsupc_read_cb() returns 0
   auth_request_sent == 1
   lu_result_sent == 0
@@ -83,19 +83,19 @@
 - HLR sends _INSERT_DATA_REQUEST, VLR responds with _INSERT_DATA_RESULT
 <-- GSUP rx OSMO_GSUP_MSGT_INSERT_DATA_REQUEST: 10010809710000000156f00804032443f2
 DVLR GSUP rx 17: 10010809710000000156f00804032443f2
-DREF VLR subscr IMSI-901700000010650 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650 + vlr_gsupc_read_cb: now used by 2 (conn,vlr_gsupc_read_cb)
 DVLR IMSI:901700000010650 has MSISDN:42342
-DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342) VLR: update for IMSI=901700000010650 (MSISDN=42342, used=2)
+DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342) VLR: update for IMSI=901700000010650 (MSISDN=42342)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:GERAN-A-0:LU){RAN_CONN_S_AUTH_CIPH}: Updated ID
 DVLR GSUP tx: 12010809710000000156f0
 GSUP --> HLR: OSMO_GSUP_MSGT_INSERT_DATA_RESULT: 12010809710000000156f0
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342 - vlr_gsupc_read_cb: now used by 1 (conn)
 <-- GSUP rx OSMO_GSUP_MSGT_INSERT_DATA_REQUEST: vlr_gsupc_read_cb() returns 0
   lu_result_sent == 0
 - HLR also sends GSUP _UPDATE_LOCATION_RESULT
 <-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: 06010809710000000156f0
 DVLR GSUP rx 11: 06010809710000000156f0
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342 + vlr_gsupc_read_cb: now used by 2 (conn,vlr_gsupc_read_cb)
 DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:GERAN-A-0:LU){VLR_ULA_S_WAIT_HLR_UPD}: Received Event VLR_ULA_E_HLR_LU_RES
 DVLR upd_hlr_vlr_fsm(IMSI-901700000010650:GERAN-A-0:LU){UPD_HLR_VLR_S_WAIT_FOR_DATA}: Received Event UPD_HLR_VLR_E_UPD_LOC_ACK
 DVLR upd_hlr_vlr_fsm(IMSI-901700000010650:GERAN-A-0:LU){UPD_HLR_VLR_S_WAIT_FOR_DATA}: state_chg to UPD_HLR_VLR_S_DONE
@@ -109,12 +109,12 @@
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:GERAN-A-0:LU){LU_COMPL_VLR_S_INIT}: state_chg to LU_COMPL_VLR_S_WAIT_SUB_PRES
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:GERAN-A-0:LU){LU_COMPL_VLR_S_WAIT_SUB_PRES}: Received Event LU_COMPL_VLR_E_SUB_PRES_COMPL
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:GERAN-A-0:LU){LU_COMPL_VLR_S_WAIT_SUB_PRES}: lu_compl_vlr_new_tmsi()
-DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100) VLR: update for IMSI=901700000010650 (MSISDN=42342, used=2)
+DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100) VLR: update for IMSI=901700000010650 (MSISDN=42342)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100:GERAN-A-0:LU){RAN_CONN_S_AUTH_CIPH}: Updated ID
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:GERAN-A-0:LU){LU_COMPL_VLR_S_WAIT_SUB_PRES}: state_chg to LU_COMPL_VLR_S_WAIT_TMSI_CNF
 - sending LU Accept for IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100, with TMSI 0x03020100
 DVLR upd_hlr_vlr_fsm(IMSI-901700000010650:GERAN-A-0:LU){UPD_HLR_VLR_S_DONE}: Deallocated
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 - vlr_gsupc_read_cb: now used by 1 (conn)
 <-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: vlr_gsupc_read_cb() returns 0
   lu_result_sent == 1
 - a LU Accept with a new TMSI was sent, waiting for TMSI Realloc Compl
@@ -130,12 +130,12 @@
 DRLL Dispatching 04.08 message SMS:0x01 (0x9:0x1)
 DRLL subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100: Message not permitted for initial conn: SMS:0x01
 - even though the TMSI is not acked, we can already find the subscr with it
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 + _test_auth_reuse: now used by 2 (conn,_test_auth_reuse)
   vsub != NULL == 1
   strcmp(vsub->imsi, imsi) == 0
   vsub->tmsi_new == 0x03020100
   vsub->tmsi == 0xffffffff
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 - _test_auth_reuse: now used by 1 (conn)
 - MS sends TMSI Realloc Complete
   MSC <--GERAN-A-- MS: GSM48_MT_MM_TMSI_REALL_COMPL
 DREF IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100: MSC conn use + dtap == 1 (0x2: dtap)
@@ -143,9 +143,9 @@
 DMM TMSI Reallocation Completed. Subscriber: IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100
 DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100:GERAN-A-0:LU){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_NEW_TMSI_ACK
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:GERAN-A-0:LU){LU_COMPL_VLR_S_WAIT_TMSI_CNF}: Received Event LU_COMPL_VLR_E_NEW_TMSI_ACK
-DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100) VLR: update for IMSI=901700000010650 (MSISDN=42342, used=1)
+DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100) VLR: update for IMSI=901700000010650 (MSISDN=42342)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:LU){RAN_CONN_S_AUTH_CIPH}: Updated ID
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + attached: now used by 2 (conn,attached)
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:GERAN-A-0:LU){LU_COMPL_VLR_S_WAIT_TMSI_CNF}: state_chg to LU_COMPL_VLR_S_DONE
 DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:LU){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_LU_COMPL_SUCCESS
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:GERAN-A-0:LU){LU_COMPL_VLR_S_DONE}: Terminating (cause = OSMO_FSM_TERM_PARENT)
@@ -157,8 +157,8 @@
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:LU){RAN_CONN_S_ACCEPTED}: Received Event RAN_CONN_E_UNUSED
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:LU){RAN_CONN_S_ACCEPTED}: state_chg to RAN_CONN_S_RELEASING
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use + release == 2 (0x102: dtap,release)
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + vlr_subscr_cancel_attach_fsm: now used by 3 (conn,attached,vlr_subscr_cancel_attach_fsm)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - vlr_subscr_cancel_attach_fsm: now used by 2 (conn,attached)
 - BSSAP Clear --GERAN-A--> MS
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use - dtap == 1 (0x100: release)
   bssap_clear_sent == 1
@@ -172,15 +172,15 @@
 DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:LU){VLR_ULA_S_DONE}: fsm_lu_cleanup called with cause OSMO_FSM_TERM_PARENT
 DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:LU){VLR_ULA_S_DONE}: Deferring: will deallocate with RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:LU)
 DRLL IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: Freeing RAN connection
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - conn: now used by 1 (attached)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:LU){RAN_CONN_S_RELEASED}: Deallocated, including all deferred deallocations
 - LU was successful, and the conn has already been closed
   llist_count(&net->ran_conns) == 0
 ---
 - Now the auth tuple has use_count == 1
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + _test_auth_reuse: now used by 2 (attached,_test_auth_reuse)
   vsub->last_tuple->use_count == 1
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - _test_auth_reuse: now used by 1 (attached)
 ---
 - after a while, a new conn sends a CM Service Request. VLR responds with Auth Req, and reuses old auth vector
   MSC <--GERAN-A-- MS: GSM48_MT_MM_CM_SERV_REQ
@@ -194,8 +194,8 @@
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_INIT}: is child of RAN_conn(IMSI-901700000010650:GERAN-A-0:CM_SERVICE_REQ)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_INIT}: rev=R99 net=GERAN Auth (no Ciph)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_INIT}: Received Event PR_ARQ_E_START
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + proc_arq_vlr_fn_init: now used by 2 (attached,proc_arq_vlr_fn_init)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + conn: now used by 3 (attached,proc_arq_vlr_fn_init,conn)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_NEW}: Updated ID
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_INIT}: proc_arq_vlr_fn_post_imsi()
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_INIT}: state_chg to PR_ARQ_S_WAIT_AUTH
@@ -208,7 +208,7 @@
 - ...rand=39fa2f4e3d523d8619a73b4f65c3e14d
 - ...autn=8704f5ba55f30000d2ee44b22c8ea919
 - ...expecting res=e229c19e791f2e41
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - proc_arq_vlr_fn_init: now used by 2 (attached,conn)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_NEW}: Received Event RAN_CONN_E_COMPLETE_LAYER_3
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_NEW}: state_chg to RAN_CONN_S_AUTH_CIPH
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use - compl_l3 == 0 (0x0: )
@@ -251,8 +251,8 @@
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_ACCEPTED}: Received Event RAN_CONN_E_UNUSED
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_ACCEPTED}: state_chg to RAN_CONN_S_RELEASING
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use + release == 1 (0x100: release)
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + vlr_subscr_cancel_attach_fsm: now used by 3 (attached,conn,vlr_subscr_cancel_attach_fsm)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - vlr_subscr_cancel_attach_fsm: now used by 2 (attached,conn)
 - BSSAP Clear --GERAN-A--> MS
   bssap_clear_sent == 1
 - BSS sends BSSMAP Clear Complete
@@ -264,15 +264,15 @@
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_DONE}: Removing from parent RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_DONE}: Deferring: will deallocate with RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ)
 DRLL IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: Freeing RAN connection
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - conn: now used by 1 (attached)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_RELEASED}: Deallocated, including all deferred deallocations
 - all requests serviced, conn has been released
   llist_count(&net->ran_conns) == 0
 ---
 - Now the auth tuple has use_count == 2, as much as is allowed.
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + _test_auth_reuse: now used by 2 (attached,_test_auth_reuse)
   vsub->last_tuple->use_count == 2
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - _test_auth_reuse: now used by 1 (attached)
 ---
 - after a while, a new conn sends a CM Service Request. VLR responds with Auth Req, and needs to request a second auth vector from HLR
   MSC <--GERAN-A-- MS: GSM48_MT_MM_CM_SERV_REQ
@@ -286,8 +286,8 @@
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_INIT}: is child of RAN_conn(IMSI-901700000010650:GERAN-A-0:CM_SERVICE_REQ)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_INIT}: rev=R99 net=GERAN Auth (no Ciph)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_INIT}: Received Event PR_ARQ_E_START
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + proc_arq_vlr_fn_init: now used by 2 (attached,proc_arq_vlr_fn_init)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + conn: now used by 3 (attached,proc_arq_vlr_fn_init,conn)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_NEW}: Updated ID
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_INIT}: proc_arq_vlr_fn_post_imsi()
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_INIT}: state_chg to PR_ARQ_S_WAIT_AUTH
@@ -297,7 +297,7 @@
 DVLR GSUP tx: 08010809710000000156f0
 GSUP --> HLR: OSMO_GSUP_MSGT_SEND_AUTH_INFO_REQUEST: 08010809710000000156f0
 DVLR VLR_Authenticate(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){VLR_SUB_AS_NEEDS_AUTH}: state_chg to VLR_SUB_AS_NEEDS_AUTH_WAIT_AI
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - proc_arq_vlr_fn_init: now used by 2 (attached,conn)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_NEW}: Received Event RAN_CONN_E_COMPLETE_LAYER_3
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_NEW}: state_chg to RAN_CONN_S_AUTH_CIPH
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use - compl_l3 == 0 (0x0: )
@@ -309,7 +309,7 @@
 - from HLR, rx _SEND_AUTH_INFO_RESULT, second tuple; VLR sends Auth Req to MS
 <-- GSUP rx OSMO_GSUP_MSGT_SEND_AUTH_INFO_RESULT: 0a010809710000000156f003622010c187a53a5e6b9d573cac7c74451fd46d210485aa31302208d3d50a000bf04f6e23101159ec926a50e98c034a6b7d7c9f418d2410df3a03d9ca5335641efc8e36d76cd20b25101843a645b98d00005b2d666af46c45d927087db47cf7f81e4dc7
 DVLR GSUP rx 111: 0a010809710000000156f003622010c187a53a5e6b9d573cac7c74451fd46d210485aa31302208d3d50a000bf04f6e23101159ec926a50e98c034a6b7d7c9f418d2410df3a03d9ca5335641efc8e36d76cd20b25101843a645b98d00005b2d666af46c45d927087db47cf7f81e4dc7
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + vlr_gsupc_read_cb: now used by 3 (attached,conn,vlr_gsupc_read_cb)
 DVLR VLR_Authenticate(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){VLR_SUB_AS_NEEDS_AUTH_WAIT_AI}: Received Event VLR_AUTH_E_HLR_SAI_ACK
 DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100) Received 1 auth tuples
 DVLR VLR_Authenticate(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){VLR_SUB_AS_NEEDS_AUTH_WAIT_AI}: state_chg to VLR_SUB_AS_WAIT_RESP
@@ -318,7 +318,7 @@
 - ...rand=c187a53a5e6b9d573cac7c74451fd46d
 - ...autn=1843a645b98d00005b2d666af46c45d9
 - ...expecting res=7db47cf7f81e4dc7
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - vlr_gsupc_read_cb: now used by 2 (attached,conn)
 <-- GSUP rx OSMO_GSUP_MSGT_SEND_AUTH_INFO_RESULT: vlr_gsupc_read_cb() returns 0
   auth_request_sent == 1
   cm_service_result_sent == 0
@@ -357,8 +357,8 @@
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_ACCEPTED}: Received Event RAN_CONN_E_UNUSED
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_ACCEPTED}: state_chg to RAN_CONN_S_RELEASING
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use + release == 1 (0x100: release)
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + vlr_subscr_cancel_attach_fsm: now used by 3 (attached,conn,vlr_subscr_cancel_attach_fsm)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - vlr_subscr_cancel_attach_fsm: now used by 2 (attached,conn)
 - BSSAP Clear --GERAN-A--> MS
   bssap_clear_sent == 1
 - BSS sends BSSMAP Clear Complete
@@ -370,7 +370,7 @@
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_DONE}: Removing from parent RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_DONE}: Deferring: will deallocate with RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ)
 DRLL IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: Freeing RAN connection
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - conn: now used by 1 (attached)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_RELEASED}: Deallocated, including all deferred deallocations
 - all requests serviced, conn has been released
   llist_count(&net->ran_conns) == 0
@@ -382,12 +382,12 @@
 DREF unknown: MSC conn use + compl_l3 == 1 (0x1: compl_l3)
 DRLL Dispatching 04.08 message GSM48_MT_MM_IMSI_DETACH_IND (0x5:0x1)
 DMM IMSI DETACH INDICATION: MI(IMSI)=901700000010650
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 0
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + vlr_subscr_cancel_attach_fsm: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,vlr_subscr_cancel_attach_fsm)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - vlr_subscr_cancel_attach_fsm: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - attached: now used by 1 (gsm48_rx_mm_imsi_detach_ind)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - gsm48_rx_mm_imsi_detach_ind: now used by 0 (-)
 DREF freeing VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100
 DMM RAN_conn{RAN_CONN_S_NEW}: Received Event RAN_CONN_E_CN_CLOSE
 DMM RAN_conn{RAN_CONN_S_NEW}: state_chg to RAN_CONN_S_RELEASING
@@ -422,12 +422,12 @@
 DVLR vlr_lu_fsm(IMSI-901700000010650:UTRAN-Iu-42:LU){VLR_ULA_S_IDLE}: is child of RAN_conn(IMSI-901700000010650:UTRAN-Iu-42:LU)
 DVLR vlr_lu_fsm(IMSI-901700000010650:UTRAN-Iu-42:LU){VLR_ULA_S_IDLE}: rev=R99 net=UTRAN Auth+Ciph
 DVLR vlr_lu_fsm(IMSI-901700000010650:UTRAN-Iu-42:LU){VLR_ULA_S_IDLE}: Received Event VLR_ULA_E_UPDATE_LA
-DREF VLR subscr unknown usage increases to: 1
+DREF VLR subscr unknown + _lu_fsm_associate_vsub: now used by 1 (_lu_fsm_associate_vsub)
 DVLR set IMSI on subscriber; IMSI=901700000010650 id=901700000010650
 DVLR New subscr, IMSI: 901700000010650
-DREF VLR subscr IMSI-901700000010650 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650 + conn: now used by 2 (_lu_fsm_associate_vsub,conn)
 DMM RAN_conn(IMSI-901700000010650:UTRAN-Iu-42:LU){RAN_CONN_S_NEW}: Updated ID
-DREF VLR subscr IMSI-901700000010650 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650 - _lu_fsm_associate_vsub: now used by 1 (conn)
 DVLR vlr_lu_fsm(IMSI-901700000010650:UTRAN-Iu-42:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1()
 DVLR vlr_lu_fsm(IMSI-901700000010650:UTRAN-Iu-42:LU){VLR_ULA_S_IDLE}: state_chg to VLR_ULA_S_WAIT_AUTH
 DVLR VLR_Authenticate(IMSI-901700000010650:UTRAN-Iu-42:LU){VLR_SUB_AS_NEEDS_AUTH}: Allocated
@@ -445,7 +445,7 @@
 - from HLR, rx _SEND_AUTH_INFO_RESULT, only one tuple; VLR sends Auth Req to MS
 <-- GSUP rx OSMO_GSUP_MSGT_SEND_AUTH_INFO_RESULT: 0a010809710000000156f00362201039fa2f4e3d523d8619a73b4f65c3e14d21049b36efdf2208059a4f668f6fbe39231027497388b6cb044648f396aa155b95ef2410f64735036e5871319c679f4742a75ea125108704f5ba55f30000d2ee44b22c8ea9192708e229c19e791f2e41
 DVLR GSUP rx 111: 0a010809710000000156f00362201039fa2f4e3d523d8619a73b4f65c3e14d21049b36efdf2208059a4f668f6fbe39231027497388b6cb044648f396aa155b95ef2410f64735036e5871319c679f4742a75ea125108704f5ba55f30000d2ee44b22c8ea9192708e229c19e791f2e41
-DREF VLR subscr IMSI-901700000010650 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650 + vlr_gsupc_read_cb: now used by 2 (conn,vlr_gsupc_read_cb)
 DVLR VLR_Authenticate(IMSI-901700000010650:UTRAN-Iu-42:LU){VLR_SUB_AS_NEEDS_AUTH_WAIT_AI}: Received Event VLR_AUTH_E_HLR_SAI_ACK
 DVLR SUBSCR(IMSI-901700000010650) Received 1 auth tuples
 DVLR VLR_Authenticate(IMSI-901700000010650:UTRAN-Iu-42:LU){VLR_SUB_AS_NEEDS_AUTH_WAIT_AI}: state_chg to VLR_SUB_AS_WAIT_RESP
@@ -454,7 +454,7 @@
 - ...rand=39fa2f4e3d523d8619a73b4f65c3e14d
 - ...autn=8704f5ba55f30000d2ee44b22c8ea919
 - ...expecting res=e229c19e791f2e41
-DREF VLR subscr IMSI-901700000010650 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650 - vlr_gsupc_read_cb: now used by 1 (conn)
 <-- GSUP rx OSMO_GSUP_MSGT_SEND_AUTH_INFO_RESULT: vlr_gsupc_read_cb() returns 0
   auth_request_sent == 1
   lu_result_sent == 0
@@ -502,19 +502,19 @@
 - HLR sends _INSERT_DATA_REQUEST, VLR responds with _INSERT_DATA_RESULT
 <-- GSUP rx OSMO_GSUP_MSGT_INSERT_DATA_REQUEST: 10010809710000000156f00804032443f2
 DVLR GSUP rx 17: 10010809710000000156f00804032443f2
-DREF VLR subscr IMSI-901700000010650 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650 + vlr_gsupc_read_cb: now used by 2 (conn,vlr_gsupc_read_cb)
 DVLR IMSI:901700000010650 has MSISDN:42342
-DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342) VLR: update for IMSI=901700000010650 (MSISDN=42342, used=2)
+DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342) VLR: update for IMSI=901700000010650 (MSISDN=42342)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:UTRAN-Iu-42:LU){RAN_CONN_S_AUTH_CIPH}: Updated ID
 DVLR GSUP tx: 12010809710000000156f0
 GSUP --> HLR: OSMO_GSUP_MSGT_INSERT_DATA_RESULT: 12010809710000000156f0
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342 - vlr_gsupc_read_cb: now used by 1 (conn)
 <-- GSUP rx OSMO_GSUP_MSGT_INSERT_DATA_REQUEST: vlr_gsupc_read_cb() returns 0
   lu_result_sent == 0
 - HLR also sends GSUP _UPDATE_LOCATION_RESULT
 <-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: 06010809710000000156f0
 DVLR GSUP rx 11: 06010809710000000156f0
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342 + vlr_gsupc_read_cb: now used by 2 (conn,vlr_gsupc_read_cb)
 DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:UTRAN-Iu-42:LU){VLR_ULA_S_WAIT_HLR_UPD}: Received Event VLR_ULA_E_HLR_LU_RES
 DVLR upd_hlr_vlr_fsm(IMSI-901700000010650:UTRAN-Iu-42:LU){UPD_HLR_VLR_S_WAIT_FOR_DATA}: Received Event UPD_HLR_VLR_E_UPD_LOC_ACK
 DVLR upd_hlr_vlr_fsm(IMSI-901700000010650:UTRAN-Iu-42:LU){UPD_HLR_VLR_S_WAIT_FOR_DATA}: state_chg to UPD_HLR_VLR_S_DONE
@@ -528,12 +528,12 @@
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:UTRAN-Iu-42:LU){LU_COMPL_VLR_S_INIT}: state_chg to LU_COMPL_VLR_S_WAIT_SUB_PRES
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:UTRAN-Iu-42:LU){LU_COMPL_VLR_S_WAIT_SUB_PRES}: Received Event LU_COMPL_VLR_E_SUB_PRES_COMPL
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:UTRAN-Iu-42:LU){LU_COMPL_VLR_S_WAIT_SUB_PRES}: lu_compl_vlr_new_tmsi()
-DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100) VLR: update for IMSI=901700000010650 (MSISDN=42342, used=2)
+DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100) VLR: update for IMSI=901700000010650 (MSISDN=42342)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100:UTRAN-Iu-42:LU){RAN_CONN_S_AUTH_CIPH}: Updated ID
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:UTRAN-Iu-42:LU){LU_COMPL_VLR_S_WAIT_SUB_PRES}: state_chg to LU_COMPL_VLR_S_WAIT_TMSI_CNF
 - sending LU Accept for IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100, with TMSI 0x03020100
 DVLR upd_hlr_vlr_fsm(IMSI-901700000010650:UTRAN-Iu-42:LU){UPD_HLR_VLR_S_DONE}: Deallocated
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 - vlr_gsupc_read_cb: now used by 1 (conn)
 <-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: vlr_gsupc_read_cb() returns 0
   lu_result_sent == 1
 - a LU Accept with a new TMSI was sent, waiting for TMSI Realloc Compl
@@ -549,12 +549,12 @@
 DRLL Dispatching 04.08 message SMS:0x01 (0x9:0x1)
 DRLL subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100: Message not permitted for initial conn: SMS:0x01
 - even though the TMSI is not acked, we can already find the subscr with it
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 + _test_auth_reuse: now used by 2 (conn,_test_auth_reuse)
   vsub != NULL == 1
   strcmp(vsub->imsi, imsi) == 0
   vsub->tmsi_new == 0x03020100
   vsub->tmsi == 0xffffffff
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 - _test_auth_reuse: now used by 1 (conn)
 - MS sends TMSI Realloc Complete
   MSC <--UTRAN-Iu-- MS: GSM48_MT_MM_TMSI_REALL_COMPL
 DREF IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100: MSC conn use + dtap == 1 (0x2: dtap)
@@ -562,9 +562,9 @@
 DMM TMSI Reallocation Completed. Subscriber: IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100
 DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100:UTRAN-Iu-42:LU){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_NEW_TMSI_ACK
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:UTRAN-Iu-42:LU){LU_COMPL_VLR_S_WAIT_TMSI_CNF}: Received Event LU_COMPL_VLR_E_NEW_TMSI_ACK
-DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100) VLR: update for IMSI=901700000010650 (MSISDN=42342, used=1)
+DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100) VLR: update for IMSI=901700000010650 (MSISDN=42342)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:LU){RAN_CONN_S_AUTH_CIPH}: Updated ID
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + attached: now used by 2 (conn,attached)
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:UTRAN-Iu-42:LU){LU_COMPL_VLR_S_WAIT_TMSI_CNF}: state_chg to LU_COMPL_VLR_S_DONE
 DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:LU){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_LU_COMPL_SUCCESS
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:UTRAN-Iu-42:LU){LU_COMPL_VLR_S_DONE}: Terminating (cause = OSMO_FSM_TERM_PARENT)
@@ -576,8 +576,8 @@
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:LU){RAN_CONN_S_ACCEPTED}: Received Event RAN_CONN_E_UNUSED
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:LU){RAN_CONN_S_ACCEPTED}: state_chg to RAN_CONN_S_RELEASING
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use + release == 2 (0x102: dtap,release)
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + vlr_subscr_cancel_attach_fsm: now used by 3 (conn,attached,vlr_subscr_cancel_attach_fsm)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - vlr_subscr_cancel_attach_fsm: now used by 2 (conn,attached)
 - Iu Release --UTRAN-Iu--> MS
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use - dtap == 1 (0x100: release)
   iu_release_sent == 1
@@ -591,15 +591,15 @@
 DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:LU){VLR_ULA_S_DONE}: fsm_lu_cleanup called with cause OSMO_FSM_TERM_PARENT
 DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:LU){VLR_ULA_S_DONE}: Deferring: will deallocate with RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:LU)
 DRLL IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: Freeing RAN connection
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - conn: now used by 1 (attached)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:LU){RAN_CONN_S_RELEASED}: Deallocated, including all deferred deallocations
 - LU was successful, and the conn has already been closed
   llist_count(&net->ran_conns) == 0
 ---
 - Now the auth tuple has use_count == 1
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + _test_auth_reuse: now used by 2 (attached,_test_auth_reuse)
   vsub->last_tuple->use_count == 1
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - _test_auth_reuse: now used by 1 (attached)
 ---
 - after a while, a new conn sends a CM Service Request. VLR responds with Auth Req, and reuses old auth vector
   MSC <--UTRAN-Iu-- MS: GSM48_MT_MM_CM_SERV_REQ
@@ -613,8 +613,8 @@
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_INIT}: is child of RAN_conn(IMSI-901700000010650:UTRAN-Iu-42:CM_SERVICE_REQ)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_INIT}: rev=R99 net=UTRAN Auth+Ciph
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_INIT}: Received Event PR_ARQ_E_START
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + proc_arq_vlr_fn_init: now used by 2 (attached,proc_arq_vlr_fn_init)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + conn: now used by 3 (attached,proc_arq_vlr_fn_init,conn)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_NEW}: Updated ID
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_INIT}: proc_arq_vlr_fn_post_imsi()
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_INIT}: state_chg to PR_ARQ_S_WAIT_AUTH
@@ -627,7 +627,7 @@
 - ...rand=39fa2f4e3d523d8619a73b4f65c3e14d
 - ...autn=8704f5ba55f30000d2ee44b22c8ea919
 - ...expecting res=e229c19e791f2e41
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - proc_arq_vlr_fn_init: now used by 2 (attached,conn)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_NEW}: Received Event RAN_CONN_E_COMPLETE_LAYER_3
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_NEW}: state_chg to RAN_CONN_S_AUTH_CIPH
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use - compl_l3 == 0 (0x0: )
@@ -683,8 +683,8 @@
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_ACCEPTED}: Received Event RAN_CONN_E_UNUSED
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_ACCEPTED}: state_chg to RAN_CONN_S_RELEASING
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use + release == 1 (0x100: release)
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + vlr_subscr_cancel_attach_fsm: now used by 3 (attached,conn,vlr_subscr_cancel_attach_fsm)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - vlr_subscr_cancel_attach_fsm: now used by 2 (attached,conn)
 - Iu Release --UTRAN-Iu--> MS
   iu_release_sent == 1
 - RNC sends Iu Release Complete
@@ -696,15 +696,15 @@
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_DONE}: Removing from parent RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_DONE}: Deferring: will deallocate with RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ)
 DRLL IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: Freeing RAN connection
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - conn: now used by 1 (attached)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_RELEASED}: Deallocated, including all deferred deallocations
 - all requests serviced, conn has been released
   llist_count(&net->ran_conns) == 0
 ---
 - Now the auth tuple has use_count == 2, as much as is allowed.
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + _test_auth_reuse: now used by 2 (attached,_test_auth_reuse)
   vsub->last_tuple->use_count == 2
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - _test_auth_reuse: now used by 1 (attached)
 ---
 - after a while, a new conn sends a CM Service Request. VLR responds with Auth Req, and needs to request a second auth vector from HLR
   MSC <--UTRAN-Iu-- MS: GSM48_MT_MM_CM_SERV_REQ
@@ -718,8 +718,8 @@
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_INIT}: is child of RAN_conn(IMSI-901700000010650:UTRAN-Iu-42:CM_SERVICE_REQ)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_INIT}: rev=R99 net=UTRAN Auth+Ciph
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_INIT}: Received Event PR_ARQ_E_START
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + proc_arq_vlr_fn_init: now used by 2 (attached,proc_arq_vlr_fn_init)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + conn: now used by 3 (attached,proc_arq_vlr_fn_init,conn)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_NEW}: Updated ID
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_INIT}: proc_arq_vlr_fn_post_imsi()
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_INIT}: state_chg to PR_ARQ_S_WAIT_AUTH
@@ -729,7 +729,7 @@
 DVLR GSUP tx: 08010809710000000156f0
 GSUP --> HLR: OSMO_GSUP_MSGT_SEND_AUTH_INFO_REQUEST: 08010809710000000156f0
 DVLR VLR_Authenticate(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){VLR_SUB_AS_NEEDS_AUTH}: state_chg to VLR_SUB_AS_NEEDS_AUTH_WAIT_AI
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - proc_arq_vlr_fn_init: now used by 2 (attached,conn)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_NEW}: Received Event RAN_CONN_E_COMPLETE_LAYER_3
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_NEW}: state_chg to RAN_CONN_S_AUTH_CIPH
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use - compl_l3 == 0 (0x0: )
@@ -741,7 +741,7 @@
 - from HLR, rx _SEND_AUTH_INFO_RESULT, second tuple; VLR sends Auth Req to MS
 <-- GSUP rx OSMO_GSUP_MSGT_SEND_AUTH_INFO_RESULT: 0a010809710000000156f003622010c187a53a5e6b9d573cac7c74451fd46d210485aa31302208d3d50a000bf04f6e23101159ec926a50e98c034a6b7d7c9f418d2410df3a03d9ca5335641efc8e36d76cd20b25101843a645b98d00005b2d666af46c45d927087db47cf7f81e4dc7
 DVLR GSUP rx 111: 0a010809710000000156f003622010c187a53a5e6b9d573cac7c74451fd46d210485aa31302208d3d50a000bf04f6e23101159ec926a50e98c034a6b7d7c9f418d2410df3a03d9ca5335641efc8e36d76cd20b25101843a645b98d00005b2d666af46c45d927087db47cf7f81e4dc7
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + vlr_gsupc_read_cb: now used by 3 (attached,conn,vlr_gsupc_read_cb)
 DVLR VLR_Authenticate(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){VLR_SUB_AS_NEEDS_AUTH_WAIT_AI}: Received Event VLR_AUTH_E_HLR_SAI_ACK
 DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100) Received 1 auth tuples
 DVLR VLR_Authenticate(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){VLR_SUB_AS_NEEDS_AUTH_WAIT_AI}: state_chg to VLR_SUB_AS_WAIT_RESP
@@ -750,7 +750,7 @@
 - ...rand=c187a53a5e6b9d573cac7c74451fd46d
 - ...autn=1843a645b98d00005b2d666af46c45d9
 - ...expecting res=7db47cf7f81e4dc7
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - vlr_gsupc_read_cb: now used by 2 (attached,conn)
 <-- GSUP rx OSMO_GSUP_MSGT_SEND_AUTH_INFO_RESULT: vlr_gsupc_read_cb() returns 0
   auth_request_sent == 1
   cm_service_result_sent == 0
@@ -802,8 +802,8 @@
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_ACCEPTED}: Received Event RAN_CONN_E_UNUSED
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_ACCEPTED}: state_chg to RAN_CONN_S_RELEASING
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use + release == 1 (0x100: release)
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + vlr_subscr_cancel_attach_fsm: now used by 3 (attached,conn,vlr_subscr_cancel_attach_fsm)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - vlr_subscr_cancel_attach_fsm: now used by 2 (attached,conn)
 - Iu Release --UTRAN-Iu--> MS
   iu_release_sent == 1
 - RNC sends Iu Release Complete
@@ -815,7 +815,7 @@
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_DONE}: Removing from parent RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_DONE}: Deferring: will deallocate with RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ)
 DRLL IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: Freeing RAN connection
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - conn: now used by 1 (attached)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_RELEASED}: Deallocated, including all deferred deallocations
 - all requests serviced, conn has been released
   llist_count(&net->ran_conns) == 0
@@ -827,12 +827,12 @@
 DREF unknown: MSC conn use + compl_l3 == 1 (0x1: compl_l3)
 DRLL Dispatching 04.08 message GSM48_MT_MM_IMSI_DETACH_IND (0x5:0x1)
 DMM IMSI DETACH INDICATION: MI(IMSI)=901700000010650
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 0
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + vlr_subscr_cancel_attach_fsm: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,vlr_subscr_cancel_attach_fsm)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - vlr_subscr_cancel_attach_fsm: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - attached: now used by 1 (gsm48_rx_mm_imsi_detach_ind)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - gsm48_rx_mm_imsi_detach_ind: now used by 0 (-)
 DREF freeing VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100
 DMM RAN_conn{RAN_CONN_S_NEW}: Received Event RAN_CONN_E_CN_CLOSE
 DMM RAN_conn{RAN_CONN_S_NEW}: state_chg to RAN_CONN_S_RELEASING
@@ -867,12 +867,12 @@
 DVLR vlr_lu_fsm(IMSI-901700000010650:GERAN-A-0:LU){VLR_ULA_S_IDLE}: is child of RAN_conn(IMSI-901700000010650:GERAN-A-0:LU)
 DVLR vlr_lu_fsm(IMSI-901700000010650:GERAN-A-0:LU){VLR_ULA_S_IDLE}: rev=R99 net=GERAN Auth (no Ciph)
 DVLR vlr_lu_fsm(IMSI-901700000010650:GERAN-A-0:LU){VLR_ULA_S_IDLE}: Received Event VLR_ULA_E_UPDATE_LA
-DREF VLR subscr unknown usage increases to: 1
+DREF VLR subscr unknown + _lu_fsm_associate_vsub: now used by 1 (_lu_fsm_associate_vsub)
 DVLR set IMSI on subscriber; IMSI=901700000010650 id=901700000010650
 DVLR New subscr, IMSI: 901700000010650
-DREF VLR subscr IMSI-901700000010650 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650 + conn: now used by 2 (_lu_fsm_associate_vsub,conn)
 DMM RAN_conn(IMSI-901700000010650:GERAN-A-0:LU){RAN_CONN_S_NEW}: Updated ID
-DREF VLR subscr IMSI-901700000010650 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650 - _lu_fsm_associate_vsub: now used by 1 (conn)
 DVLR vlr_lu_fsm(IMSI-901700000010650:GERAN-A-0:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1()
 DVLR vlr_lu_fsm(IMSI-901700000010650:GERAN-A-0:LU){VLR_ULA_S_IDLE}: state_chg to VLR_ULA_S_WAIT_AUTH
 DVLR VLR_Authenticate(IMSI-901700000010650:GERAN-A-0:LU){VLR_SUB_AS_NEEDS_AUTH}: Allocated
@@ -890,7 +890,7 @@
 - from HLR, rx _SEND_AUTH_INFO_RESULT, only one tuple; VLR sends Auth Req to MS
 <-- GSUP rx OSMO_GSUP_MSGT_SEND_AUTH_INFO_RESULT: 0a010809710000000156f00362201039fa2f4e3d523d8619a73b4f65c3e14d21049b36efdf2208059a4f668f6fbe39231027497388b6cb044648f396aa155b95ef2410f64735036e5871319c679f4742a75ea125108704f5ba55f30000d2ee44b22c8ea9192708e229c19e791f2e41
 DVLR GSUP rx 111: 0a010809710000000156f00362201039fa2f4e3d523d8619a73b4f65c3e14d21049b36efdf2208059a4f668f6fbe39231027497388b6cb044648f396aa155b95ef2410f64735036e5871319c679f4742a75ea125108704f5ba55f30000d2ee44b22c8ea9192708e229c19e791f2e41
-DREF VLR subscr IMSI-901700000010650 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650 + vlr_gsupc_read_cb: now used by 2 (conn,vlr_gsupc_read_cb)
 DVLR VLR_Authenticate(IMSI-901700000010650:GERAN-A-0:LU){VLR_SUB_AS_NEEDS_AUTH_WAIT_AI}: Received Event VLR_AUTH_E_HLR_SAI_ACK
 DVLR SUBSCR(IMSI-901700000010650) Received 1 auth tuples
 DVLR VLR_Authenticate(IMSI-901700000010650:GERAN-A-0:LU){VLR_SUB_AS_NEEDS_AUTH_WAIT_AI}: state_chg to VLR_SUB_AS_WAIT_RESP
@@ -899,7 +899,7 @@
 - ...rand=39fa2f4e3d523d8619a73b4f65c3e14d
 - ...autn=8704f5ba55f30000d2ee44b22c8ea919
 - ...expecting res=e229c19e791f2e41
-DREF VLR subscr IMSI-901700000010650 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650 - vlr_gsupc_read_cb: now used by 1 (conn)
 <-- GSUP rx OSMO_GSUP_MSGT_SEND_AUTH_INFO_RESULT: vlr_gsupc_read_cb() returns 0
   auth_request_sent == 1
   lu_result_sent == 0
@@ -935,19 +935,19 @@
 - HLR sends _INSERT_DATA_REQUEST, VLR responds with _INSERT_DATA_RESULT
 <-- GSUP rx OSMO_GSUP_MSGT_INSERT_DATA_REQUEST: 10010809710000000156f00804032443f2
 DVLR GSUP rx 17: 10010809710000000156f00804032443f2
-DREF VLR subscr IMSI-901700000010650 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650 + vlr_gsupc_read_cb: now used by 2 (conn,vlr_gsupc_read_cb)
 DVLR IMSI:901700000010650 has MSISDN:42342
-DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342) VLR: update for IMSI=901700000010650 (MSISDN=42342, used=2)
+DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342) VLR: update for IMSI=901700000010650 (MSISDN=42342)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:GERAN-A-0:LU){RAN_CONN_S_AUTH_CIPH}: Updated ID
 DVLR GSUP tx: 12010809710000000156f0
 GSUP --> HLR: OSMO_GSUP_MSGT_INSERT_DATA_RESULT: 12010809710000000156f0
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342 - vlr_gsupc_read_cb: now used by 1 (conn)
 <-- GSUP rx OSMO_GSUP_MSGT_INSERT_DATA_REQUEST: vlr_gsupc_read_cb() returns 0
   lu_result_sent == 0
 - HLR also sends GSUP _UPDATE_LOCATION_RESULT
 <-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: 06010809710000000156f0
 DVLR GSUP rx 11: 06010809710000000156f0
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342 + vlr_gsupc_read_cb: now used by 2 (conn,vlr_gsupc_read_cb)
 DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:GERAN-A-0:LU){VLR_ULA_S_WAIT_HLR_UPD}: Received Event VLR_ULA_E_HLR_LU_RES
 DVLR upd_hlr_vlr_fsm(IMSI-901700000010650:GERAN-A-0:LU){UPD_HLR_VLR_S_WAIT_FOR_DATA}: Received Event UPD_HLR_VLR_E_UPD_LOC_ACK
 DVLR upd_hlr_vlr_fsm(IMSI-901700000010650:GERAN-A-0:LU){UPD_HLR_VLR_S_WAIT_FOR_DATA}: state_chg to UPD_HLR_VLR_S_DONE
@@ -961,12 +961,12 @@
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:GERAN-A-0:LU){LU_COMPL_VLR_S_INIT}: state_chg to LU_COMPL_VLR_S_WAIT_SUB_PRES
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:GERAN-A-0:LU){LU_COMPL_VLR_S_WAIT_SUB_PRES}: Received Event LU_COMPL_VLR_E_SUB_PRES_COMPL
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:GERAN-A-0:LU){LU_COMPL_VLR_S_WAIT_SUB_PRES}: lu_compl_vlr_new_tmsi()
-DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100) VLR: update for IMSI=901700000010650 (MSISDN=42342, used=2)
+DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100) VLR: update for IMSI=901700000010650 (MSISDN=42342)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100:GERAN-A-0:LU){RAN_CONN_S_AUTH_CIPH}: Updated ID
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:GERAN-A-0:LU){LU_COMPL_VLR_S_WAIT_SUB_PRES}: state_chg to LU_COMPL_VLR_S_WAIT_TMSI_CNF
 - sending LU Accept for IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100, with TMSI 0x03020100
 DVLR upd_hlr_vlr_fsm(IMSI-901700000010650:GERAN-A-0:LU){UPD_HLR_VLR_S_DONE}: Deallocated
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 - vlr_gsupc_read_cb: now used by 1 (conn)
 <-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: vlr_gsupc_read_cb() returns 0
   lu_result_sent == 1
 - a LU Accept with a new TMSI was sent, waiting for TMSI Realloc Compl
@@ -982,12 +982,12 @@
 DRLL Dispatching 04.08 message SMS:0x01 (0x9:0x1)
 DRLL subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100: Message not permitted for initial conn: SMS:0x01
 - even though the TMSI is not acked, we can already find the subscr with it
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 + _test_auth_reuse: now used by 2 (conn,_test_auth_reuse)
   vsub != NULL == 1
   strcmp(vsub->imsi, imsi) == 0
   vsub->tmsi_new == 0x03020100
   vsub->tmsi == 0xffffffff
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 - _test_auth_reuse: now used by 1 (conn)
 - MS sends TMSI Realloc Complete
   MSC <--GERAN-A-- MS: GSM48_MT_MM_TMSI_REALL_COMPL
 DREF IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100: MSC conn use + dtap == 1 (0x2: dtap)
@@ -995,9 +995,9 @@
 DMM TMSI Reallocation Completed. Subscriber: IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100
 DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100:GERAN-A-0:LU){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_NEW_TMSI_ACK
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:GERAN-A-0:LU){LU_COMPL_VLR_S_WAIT_TMSI_CNF}: Received Event LU_COMPL_VLR_E_NEW_TMSI_ACK
-DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100) VLR: update for IMSI=901700000010650 (MSISDN=42342, used=1)
+DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100) VLR: update for IMSI=901700000010650 (MSISDN=42342)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:LU){RAN_CONN_S_AUTH_CIPH}: Updated ID
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + attached: now used by 2 (conn,attached)
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:GERAN-A-0:LU){LU_COMPL_VLR_S_WAIT_TMSI_CNF}: state_chg to LU_COMPL_VLR_S_DONE
 DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:LU){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_LU_COMPL_SUCCESS
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:GERAN-A-0:LU){LU_COMPL_VLR_S_DONE}: Terminating (cause = OSMO_FSM_TERM_PARENT)
@@ -1009,8 +1009,8 @@
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:LU){RAN_CONN_S_ACCEPTED}: Received Event RAN_CONN_E_UNUSED
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:LU){RAN_CONN_S_ACCEPTED}: state_chg to RAN_CONN_S_RELEASING
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use + release == 2 (0x102: dtap,release)
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + vlr_subscr_cancel_attach_fsm: now used by 3 (conn,attached,vlr_subscr_cancel_attach_fsm)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - vlr_subscr_cancel_attach_fsm: now used by 2 (conn,attached)
 - BSSAP Clear --GERAN-A--> MS
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use - dtap == 1 (0x100: release)
   bssap_clear_sent == 1
@@ -1024,15 +1024,15 @@
 DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:LU){VLR_ULA_S_DONE}: fsm_lu_cleanup called with cause OSMO_FSM_TERM_PARENT
 DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:LU){VLR_ULA_S_DONE}: Deferring: will deallocate with RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:LU)
 DRLL IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: Freeing RAN connection
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - conn: now used by 1 (attached)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:LU){RAN_CONN_S_RELEASED}: Deallocated, including all deferred deallocations
 - LU was successful, and the conn has already been closed
   llist_count(&net->ran_conns) == 0
 ---
 - Now the auth tuple has use_count == 1
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + _test_auth_reuse: now used by 2 (attached,_test_auth_reuse)
   vsub->last_tuple->use_count == 1
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - _test_auth_reuse: now used by 1 (attached)
 ---
 - after a while, a new conn sends a CM Service Request. VLR responds with Auth Req, and reuses old auth vector
   MSC <--GERAN-A-- MS: GSM48_MT_MM_CM_SERV_REQ
@@ -1046,8 +1046,8 @@
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_INIT}: is child of RAN_conn(IMSI-901700000010650:GERAN-A-0:CM_SERVICE_REQ)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_INIT}: rev=R99 net=GERAN Auth (no Ciph)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_INIT}: Received Event PR_ARQ_E_START
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + proc_arq_vlr_fn_init: now used by 2 (attached,proc_arq_vlr_fn_init)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + conn: now used by 3 (attached,proc_arq_vlr_fn_init,conn)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_NEW}: Updated ID
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_INIT}: proc_arq_vlr_fn_post_imsi()
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_INIT}: state_chg to PR_ARQ_S_WAIT_AUTH
@@ -1060,7 +1060,7 @@
 - ...rand=39fa2f4e3d523d8619a73b4f65c3e14d
 - ...autn=8704f5ba55f30000d2ee44b22c8ea919
 - ...expecting res=e229c19e791f2e41
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - proc_arq_vlr_fn_init: now used by 2 (attached,conn)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_NEW}: Received Event RAN_CONN_E_COMPLETE_LAYER_3
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_NEW}: state_chg to RAN_CONN_S_AUTH_CIPH
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use - compl_l3 == 0 (0x0: )
@@ -1103,8 +1103,8 @@
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_ACCEPTED}: Received Event RAN_CONN_E_UNUSED
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_ACCEPTED}: state_chg to RAN_CONN_S_RELEASING
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use + release == 1 (0x100: release)
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + vlr_subscr_cancel_attach_fsm: now used by 3 (attached,conn,vlr_subscr_cancel_attach_fsm)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - vlr_subscr_cancel_attach_fsm: now used by 2 (attached,conn)
 - BSSAP Clear --GERAN-A--> MS
   bssap_clear_sent == 1
 - BSS sends BSSMAP Clear Complete
@@ -1116,15 +1116,15 @@
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_DONE}: Removing from parent RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_DONE}: Deferring: will deallocate with RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ)
 DRLL IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: Freeing RAN connection
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - conn: now used by 1 (attached)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_RELEASED}: Deallocated, including all deferred deallocations
 - all requests serviced, conn has been released
   llist_count(&net->ran_conns) == 0
 ---
 - Now the auth tuple has use_count == 2
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + _test_auth_reuse: now used by 2 (attached,_test_auth_reuse)
   vsub->last_tuple->use_count == 2
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - _test_auth_reuse: now used by 1 (attached)
 ---
 - after a while, a new conn sends a CM Service Request. VLR responds with Auth Req, and reuses old auth vector
   MSC <--GERAN-A-- MS: GSM48_MT_MM_CM_SERV_REQ
@@ -1138,8 +1138,8 @@
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_INIT}: is child of RAN_conn(IMSI-901700000010650:GERAN-A-0:CM_SERVICE_REQ)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_INIT}: rev=R99 net=GERAN Auth (no Ciph)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_INIT}: Received Event PR_ARQ_E_START
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + proc_arq_vlr_fn_init: now used by 2 (attached,proc_arq_vlr_fn_init)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + conn: now used by 3 (attached,proc_arq_vlr_fn_init,conn)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_NEW}: Updated ID
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_INIT}: proc_arq_vlr_fn_post_imsi()
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_INIT}: state_chg to PR_ARQ_S_WAIT_AUTH
@@ -1152,7 +1152,7 @@
 - ...rand=39fa2f4e3d523d8619a73b4f65c3e14d
 - ...autn=8704f5ba55f30000d2ee44b22c8ea919
 - ...expecting res=e229c19e791f2e41
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - proc_arq_vlr_fn_init: now used by 2 (attached,conn)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_NEW}: Received Event RAN_CONN_E_COMPLETE_LAYER_3
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_NEW}: state_chg to RAN_CONN_S_AUTH_CIPH
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use - compl_l3 == 0 (0x0: )
@@ -1195,8 +1195,8 @@
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_ACCEPTED}: Received Event RAN_CONN_E_UNUSED
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_ACCEPTED}: state_chg to RAN_CONN_S_RELEASING
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use + release == 1 (0x100: release)
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + vlr_subscr_cancel_attach_fsm: now used by 3 (attached,conn,vlr_subscr_cancel_attach_fsm)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - vlr_subscr_cancel_attach_fsm: now used by 2 (attached,conn)
 - BSSAP Clear --GERAN-A--> MS
   bssap_clear_sent == 1
 - BSS sends BSSMAP Clear Complete
@@ -1208,15 +1208,15 @@
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_DONE}: Removing from parent RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_DONE}: Deferring: will deallocate with RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ)
 DRLL IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: Freeing RAN connection
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - conn: now used by 1 (attached)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_RELEASED}: Deallocated, including all deferred deallocations
 - all requests serviced, conn has been released
   llist_count(&net->ran_conns) == 0
 ---
 - Now the auth tuple has use_count == 3
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + _test_auth_reuse: now used by 2 (attached,_test_auth_reuse)
   vsub->last_tuple->use_count == 3
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - _test_auth_reuse: now used by 1 (attached)
 ---
 - after a while, a new conn sends a CM Service Request. VLR responds with Auth Req, and reuses old auth vector
   MSC <--GERAN-A-- MS: GSM48_MT_MM_CM_SERV_REQ
@@ -1230,8 +1230,8 @@
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_INIT}: is child of RAN_conn(IMSI-901700000010650:GERAN-A-0:CM_SERVICE_REQ)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_INIT}: rev=R99 net=GERAN Auth (no Ciph)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_INIT}: Received Event PR_ARQ_E_START
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + proc_arq_vlr_fn_init: now used by 2 (attached,proc_arq_vlr_fn_init)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + conn: now used by 3 (attached,proc_arq_vlr_fn_init,conn)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_NEW}: Updated ID
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_INIT}: proc_arq_vlr_fn_post_imsi()
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_INIT}: state_chg to PR_ARQ_S_WAIT_AUTH
@@ -1244,7 +1244,7 @@
 - ...rand=39fa2f4e3d523d8619a73b4f65c3e14d
 - ...autn=8704f5ba55f30000d2ee44b22c8ea919
 - ...expecting res=e229c19e791f2e41
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - proc_arq_vlr_fn_init: now used by 2 (attached,conn)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_NEW}: Received Event RAN_CONN_E_COMPLETE_LAYER_3
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_NEW}: state_chg to RAN_CONN_S_AUTH_CIPH
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use - compl_l3 == 0 (0x0: )
@@ -1287,8 +1287,8 @@
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_ACCEPTED}: Received Event RAN_CONN_E_UNUSED
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_ACCEPTED}: state_chg to RAN_CONN_S_RELEASING
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use + release == 1 (0x100: release)
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + vlr_subscr_cancel_attach_fsm: now used by 3 (attached,conn,vlr_subscr_cancel_attach_fsm)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - vlr_subscr_cancel_attach_fsm: now used by 2 (attached,conn)
 - BSSAP Clear --GERAN-A--> MS
   bssap_clear_sent == 1
 - BSS sends BSSMAP Clear Complete
@@ -1300,7 +1300,7 @@
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_DONE}: Removing from parent RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_DONE}: Deferring: will deallocate with RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ)
 DRLL IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: Freeing RAN connection
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - conn: now used by 1 (attached)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_RELEASED}: Deallocated, including all deferred deallocations
 - all requests serviced, conn has been released
   llist_count(&net->ran_conns) == 0
@@ -1312,12 +1312,12 @@
 DREF unknown: MSC conn use + compl_l3 == 1 (0x1: compl_l3)
 DRLL Dispatching 04.08 message GSM48_MT_MM_IMSI_DETACH_IND (0x5:0x1)
 DMM IMSI DETACH INDICATION: MI(IMSI)=901700000010650
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 0
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + vlr_subscr_cancel_attach_fsm: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,vlr_subscr_cancel_attach_fsm)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - vlr_subscr_cancel_attach_fsm: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - attached: now used by 1 (gsm48_rx_mm_imsi_detach_ind)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - gsm48_rx_mm_imsi_detach_ind: now used by 0 (-)
 DREF freeing VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100
 DMM RAN_conn{RAN_CONN_S_NEW}: Received Event RAN_CONN_E_CN_CLOSE
 DMM RAN_conn{RAN_CONN_S_NEW}: state_chg to RAN_CONN_S_RELEASING
@@ -1352,12 +1352,12 @@
 DVLR vlr_lu_fsm(IMSI-901700000010650:UTRAN-Iu-42:LU){VLR_ULA_S_IDLE}: is child of RAN_conn(IMSI-901700000010650:UTRAN-Iu-42:LU)
 DVLR vlr_lu_fsm(IMSI-901700000010650:UTRAN-Iu-42:LU){VLR_ULA_S_IDLE}: rev=R99 net=UTRAN Auth+Ciph
 DVLR vlr_lu_fsm(IMSI-901700000010650:UTRAN-Iu-42:LU){VLR_ULA_S_IDLE}: Received Event VLR_ULA_E_UPDATE_LA
-DREF VLR subscr unknown usage increases to: 1
+DREF VLR subscr unknown + _lu_fsm_associate_vsub: now used by 1 (_lu_fsm_associate_vsub)
 DVLR set IMSI on subscriber; IMSI=901700000010650 id=901700000010650
 DVLR New subscr, IMSI: 901700000010650
-DREF VLR subscr IMSI-901700000010650 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650 + conn: now used by 2 (_lu_fsm_associate_vsub,conn)
 DMM RAN_conn(IMSI-901700000010650:UTRAN-Iu-42:LU){RAN_CONN_S_NEW}: Updated ID
-DREF VLR subscr IMSI-901700000010650 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650 - _lu_fsm_associate_vsub: now used by 1 (conn)
 DVLR vlr_lu_fsm(IMSI-901700000010650:UTRAN-Iu-42:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1()
 DVLR vlr_lu_fsm(IMSI-901700000010650:UTRAN-Iu-42:LU){VLR_ULA_S_IDLE}: state_chg to VLR_ULA_S_WAIT_AUTH
 DVLR VLR_Authenticate(IMSI-901700000010650:UTRAN-Iu-42:LU){VLR_SUB_AS_NEEDS_AUTH}: Allocated
@@ -1375,7 +1375,7 @@
 - from HLR, rx _SEND_AUTH_INFO_RESULT, only one tuple; VLR sends Auth Req to MS
 <-- GSUP rx OSMO_GSUP_MSGT_SEND_AUTH_INFO_RESULT: 0a010809710000000156f00362201039fa2f4e3d523d8619a73b4f65c3e14d21049b36efdf2208059a4f668f6fbe39231027497388b6cb044648f396aa155b95ef2410f64735036e5871319c679f4742a75ea125108704f5ba55f30000d2ee44b22c8ea9192708e229c19e791f2e41
 DVLR GSUP rx 111: 0a010809710000000156f00362201039fa2f4e3d523d8619a73b4f65c3e14d21049b36efdf2208059a4f668f6fbe39231027497388b6cb044648f396aa155b95ef2410f64735036e5871319c679f4742a75ea125108704f5ba55f30000d2ee44b22c8ea9192708e229c19e791f2e41
-DREF VLR subscr IMSI-901700000010650 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650 + vlr_gsupc_read_cb: now used by 2 (conn,vlr_gsupc_read_cb)
 DVLR VLR_Authenticate(IMSI-901700000010650:UTRAN-Iu-42:LU){VLR_SUB_AS_NEEDS_AUTH_WAIT_AI}: Received Event VLR_AUTH_E_HLR_SAI_ACK
 DVLR SUBSCR(IMSI-901700000010650) Received 1 auth tuples
 DVLR VLR_Authenticate(IMSI-901700000010650:UTRAN-Iu-42:LU){VLR_SUB_AS_NEEDS_AUTH_WAIT_AI}: state_chg to VLR_SUB_AS_WAIT_RESP
@@ -1384,7 +1384,7 @@
 - ...rand=39fa2f4e3d523d8619a73b4f65c3e14d
 - ...autn=8704f5ba55f30000d2ee44b22c8ea919
 - ...expecting res=e229c19e791f2e41
-DREF VLR subscr IMSI-901700000010650 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650 - vlr_gsupc_read_cb: now used by 1 (conn)
 <-- GSUP rx OSMO_GSUP_MSGT_SEND_AUTH_INFO_RESULT: vlr_gsupc_read_cb() returns 0
   auth_request_sent == 1
   lu_result_sent == 0
@@ -1432,19 +1432,19 @@
 - HLR sends _INSERT_DATA_REQUEST, VLR responds with _INSERT_DATA_RESULT
 <-- GSUP rx OSMO_GSUP_MSGT_INSERT_DATA_REQUEST: 10010809710000000156f00804032443f2
 DVLR GSUP rx 17: 10010809710000000156f00804032443f2
-DREF VLR subscr IMSI-901700000010650 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650 + vlr_gsupc_read_cb: now used by 2 (conn,vlr_gsupc_read_cb)
 DVLR IMSI:901700000010650 has MSISDN:42342
-DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342) VLR: update for IMSI=901700000010650 (MSISDN=42342, used=2)
+DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342) VLR: update for IMSI=901700000010650 (MSISDN=42342)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:UTRAN-Iu-42:LU){RAN_CONN_S_AUTH_CIPH}: Updated ID
 DVLR GSUP tx: 12010809710000000156f0
 GSUP --> HLR: OSMO_GSUP_MSGT_INSERT_DATA_RESULT: 12010809710000000156f0
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342 - vlr_gsupc_read_cb: now used by 1 (conn)
 <-- GSUP rx OSMO_GSUP_MSGT_INSERT_DATA_REQUEST: vlr_gsupc_read_cb() returns 0
   lu_result_sent == 0
 - HLR also sends GSUP _UPDATE_LOCATION_RESULT
 <-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: 06010809710000000156f0
 DVLR GSUP rx 11: 06010809710000000156f0
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342 + vlr_gsupc_read_cb: now used by 2 (conn,vlr_gsupc_read_cb)
 DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:UTRAN-Iu-42:LU){VLR_ULA_S_WAIT_HLR_UPD}: Received Event VLR_ULA_E_HLR_LU_RES
 DVLR upd_hlr_vlr_fsm(IMSI-901700000010650:UTRAN-Iu-42:LU){UPD_HLR_VLR_S_WAIT_FOR_DATA}: Received Event UPD_HLR_VLR_E_UPD_LOC_ACK
 DVLR upd_hlr_vlr_fsm(IMSI-901700000010650:UTRAN-Iu-42:LU){UPD_HLR_VLR_S_WAIT_FOR_DATA}: state_chg to UPD_HLR_VLR_S_DONE
@@ -1458,12 +1458,12 @@
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:UTRAN-Iu-42:LU){LU_COMPL_VLR_S_INIT}: state_chg to LU_COMPL_VLR_S_WAIT_SUB_PRES
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:UTRAN-Iu-42:LU){LU_COMPL_VLR_S_WAIT_SUB_PRES}: Received Event LU_COMPL_VLR_E_SUB_PRES_COMPL
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:UTRAN-Iu-42:LU){LU_COMPL_VLR_S_WAIT_SUB_PRES}: lu_compl_vlr_new_tmsi()
-DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100) VLR: update for IMSI=901700000010650 (MSISDN=42342, used=2)
+DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100) VLR: update for IMSI=901700000010650 (MSISDN=42342)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100:UTRAN-Iu-42:LU){RAN_CONN_S_AUTH_CIPH}: Updated ID
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:UTRAN-Iu-42:LU){LU_COMPL_VLR_S_WAIT_SUB_PRES}: state_chg to LU_COMPL_VLR_S_WAIT_TMSI_CNF
 - sending LU Accept for IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100, with TMSI 0x03020100
 DVLR upd_hlr_vlr_fsm(IMSI-901700000010650:UTRAN-Iu-42:LU){UPD_HLR_VLR_S_DONE}: Deallocated
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 - vlr_gsupc_read_cb: now used by 1 (conn)
 <-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: vlr_gsupc_read_cb() returns 0
   lu_result_sent == 1
 - a LU Accept with a new TMSI was sent, waiting for TMSI Realloc Compl
@@ -1479,12 +1479,12 @@
 DRLL Dispatching 04.08 message SMS:0x01 (0x9:0x1)
 DRLL subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100: Message not permitted for initial conn: SMS:0x01
 - even though the TMSI is not acked, we can already find the subscr with it
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 + _test_auth_reuse: now used by 2 (conn,_test_auth_reuse)
   vsub != NULL == 1
   strcmp(vsub->imsi, imsi) == 0
   vsub->tmsi_new == 0x03020100
   vsub->tmsi == 0xffffffff
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 - _test_auth_reuse: now used by 1 (conn)
 - MS sends TMSI Realloc Complete
   MSC <--UTRAN-Iu-- MS: GSM48_MT_MM_TMSI_REALL_COMPL
 DREF IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100: MSC conn use + dtap == 1 (0x2: dtap)
@@ -1492,9 +1492,9 @@
 DMM TMSI Reallocation Completed. Subscriber: IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100
 DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100:UTRAN-Iu-42:LU){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_NEW_TMSI_ACK
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:UTRAN-Iu-42:LU){LU_COMPL_VLR_S_WAIT_TMSI_CNF}: Received Event LU_COMPL_VLR_E_NEW_TMSI_ACK
-DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100) VLR: update for IMSI=901700000010650 (MSISDN=42342, used=1)
+DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100) VLR: update for IMSI=901700000010650 (MSISDN=42342)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:LU){RAN_CONN_S_AUTH_CIPH}: Updated ID
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + attached: now used by 2 (conn,attached)
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:UTRAN-Iu-42:LU){LU_COMPL_VLR_S_WAIT_TMSI_CNF}: state_chg to LU_COMPL_VLR_S_DONE
 DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:LU){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_LU_COMPL_SUCCESS
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:UTRAN-Iu-42:LU){LU_COMPL_VLR_S_DONE}: Terminating (cause = OSMO_FSM_TERM_PARENT)
@@ -1506,8 +1506,8 @@
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:LU){RAN_CONN_S_ACCEPTED}: Received Event RAN_CONN_E_UNUSED
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:LU){RAN_CONN_S_ACCEPTED}: state_chg to RAN_CONN_S_RELEASING
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use + release == 2 (0x102: dtap,release)
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + vlr_subscr_cancel_attach_fsm: now used by 3 (conn,attached,vlr_subscr_cancel_attach_fsm)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - vlr_subscr_cancel_attach_fsm: now used by 2 (conn,attached)
 - Iu Release --UTRAN-Iu--> MS
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use - dtap == 1 (0x100: release)
   iu_release_sent == 1
@@ -1521,15 +1521,15 @@
 DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:LU){VLR_ULA_S_DONE}: fsm_lu_cleanup called with cause OSMO_FSM_TERM_PARENT
 DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:LU){VLR_ULA_S_DONE}: Deferring: will deallocate with RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:LU)
 DRLL IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: Freeing RAN connection
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - conn: now used by 1 (attached)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:LU){RAN_CONN_S_RELEASED}: Deallocated, including all deferred deallocations
 - LU was successful, and the conn has already been closed
   llist_count(&net->ran_conns) == 0
 ---
 - Now the auth tuple has use_count == 1
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + _test_auth_reuse: now used by 2 (attached,_test_auth_reuse)
   vsub->last_tuple->use_count == 1
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - _test_auth_reuse: now used by 1 (attached)
 ---
 - after a while, a new conn sends a CM Service Request. VLR responds with Auth Req, and reuses old auth vector
   MSC <--UTRAN-Iu-- MS: GSM48_MT_MM_CM_SERV_REQ
@@ -1543,8 +1543,8 @@
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_INIT}: is child of RAN_conn(IMSI-901700000010650:UTRAN-Iu-42:CM_SERVICE_REQ)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_INIT}: rev=R99 net=UTRAN Auth+Ciph
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_INIT}: Received Event PR_ARQ_E_START
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + proc_arq_vlr_fn_init: now used by 2 (attached,proc_arq_vlr_fn_init)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + conn: now used by 3 (attached,proc_arq_vlr_fn_init,conn)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_NEW}: Updated ID
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_INIT}: proc_arq_vlr_fn_post_imsi()
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_INIT}: state_chg to PR_ARQ_S_WAIT_AUTH
@@ -1557,7 +1557,7 @@
 - ...rand=39fa2f4e3d523d8619a73b4f65c3e14d
 - ...autn=8704f5ba55f30000d2ee44b22c8ea919
 - ...expecting res=e229c19e791f2e41
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - proc_arq_vlr_fn_init: now used by 2 (attached,conn)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_NEW}: Received Event RAN_CONN_E_COMPLETE_LAYER_3
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_NEW}: state_chg to RAN_CONN_S_AUTH_CIPH
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use - compl_l3 == 0 (0x0: )
@@ -1613,8 +1613,8 @@
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_ACCEPTED}: Received Event RAN_CONN_E_UNUSED
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_ACCEPTED}: state_chg to RAN_CONN_S_RELEASING
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use + release == 1 (0x100: release)
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + vlr_subscr_cancel_attach_fsm: now used by 3 (attached,conn,vlr_subscr_cancel_attach_fsm)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - vlr_subscr_cancel_attach_fsm: now used by 2 (attached,conn)
 - Iu Release --UTRAN-Iu--> MS
   iu_release_sent == 1
 - RNC sends Iu Release Complete
@@ -1626,15 +1626,15 @@
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_DONE}: Removing from parent RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_DONE}: Deferring: will deallocate with RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ)
 DRLL IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: Freeing RAN connection
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - conn: now used by 1 (attached)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_RELEASED}: Deallocated, including all deferred deallocations
 - all requests serviced, conn has been released
   llist_count(&net->ran_conns) == 0
 ---
 - Now the auth tuple has use_count == 2
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + _test_auth_reuse: now used by 2 (attached,_test_auth_reuse)
   vsub->last_tuple->use_count == 2
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - _test_auth_reuse: now used by 1 (attached)
 ---
 - after a while, a new conn sends a CM Service Request. VLR responds with Auth Req, and reuses old auth vector
   MSC <--UTRAN-Iu-- MS: GSM48_MT_MM_CM_SERV_REQ
@@ -1648,8 +1648,8 @@
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_INIT}: is child of RAN_conn(IMSI-901700000010650:UTRAN-Iu-42:CM_SERVICE_REQ)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_INIT}: rev=R99 net=UTRAN Auth+Ciph
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_INIT}: Received Event PR_ARQ_E_START
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + proc_arq_vlr_fn_init: now used by 2 (attached,proc_arq_vlr_fn_init)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + conn: now used by 3 (attached,proc_arq_vlr_fn_init,conn)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_NEW}: Updated ID
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_INIT}: proc_arq_vlr_fn_post_imsi()
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_INIT}: state_chg to PR_ARQ_S_WAIT_AUTH
@@ -1662,7 +1662,7 @@
 - ...rand=39fa2f4e3d523d8619a73b4f65c3e14d
 - ...autn=8704f5ba55f30000d2ee44b22c8ea919
 - ...expecting res=e229c19e791f2e41
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - proc_arq_vlr_fn_init: now used by 2 (attached,conn)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_NEW}: Received Event RAN_CONN_E_COMPLETE_LAYER_3
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_NEW}: state_chg to RAN_CONN_S_AUTH_CIPH
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use - compl_l3 == 0 (0x0: )
@@ -1718,8 +1718,8 @@
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_ACCEPTED}: Received Event RAN_CONN_E_UNUSED
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_ACCEPTED}: state_chg to RAN_CONN_S_RELEASING
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use + release == 1 (0x100: release)
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + vlr_subscr_cancel_attach_fsm: now used by 3 (attached,conn,vlr_subscr_cancel_attach_fsm)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - vlr_subscr_cancel_attach_fsm: now used by 2 (attached,conn)
 - Iu Release --UTRAN-Iu--> MS
   iu_release_sent == 1
 - RNC sends Iu Release Complete
@@ -1731,15 +1731,15 @@
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_DONE}: Removing from parent RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_DONE}: Deferring: will deallocate with RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ)
 DRLL IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: Freeing RAN connection
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - conn: now used by 1 (attached)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_RELEASED}: Deallocated, including all deferred deallocations
 - all requests serviced, conn has been released
   llist_count(&net->ran_conns) == 0
 ---
 - Now the auth tuple has use_count == 3
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + _test_auth_reuse: now used by 2 (attached,_test_auth_reuse)
   vsub->last_tuple->use_count == 3
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - _test_auth_reuse: now used by 1 (attached)
 ---
 - after a while, a new conn sends a CM Service Request. VLR responds with Auth Req, and reuses old auth vector
   MSC <--UTRAN-Iu-- MS: GSM48_MT_MM_CM_SERV_REQ
@@ -1753,8 +1753,8 @@
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_INIT}: is child of RAN_conn(IMSI-901700000010650:UTRAN-Iu-42:CM_SERVICE_REQ)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_INIT}: rev=R99 net=UTRAN Auth+Ciph
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_INIT}: Received Event PR_ARQ_E_START
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + proc_arq_vlr_fn_init: now used by 2 (attached,proc_arq_vlr_fn_init)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + conn: now used by 3 (attached,proc_arq_vlr_fn_init,conn)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_NEW}: Updated ID
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_INIT}: proc_arq_vlr_fn_post_imsi()
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_INIT}: state_chg to PR_ARQ_S_WAIT_AUTH
@@ -1767,7 +1767,7 @@
 - ...rand=39fa2f4e3d523d8619a73b4f65c3e14d
 - ...autn=8704f5ba55f30000d2ee44b22c8ea919
 - ...expecting res=e229c19e791f2e41
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - proc_arq_vlr_fn_init: now used by 2 (attached,conn)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_NEW}: Received Event RAN_CONN_E_COMPLETE_LAYER_3
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_NEW}: state_chg to RAN_CONN_S_AUTH_CIPH
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use - compl_l3 == 0 (0x0: )
@@ -1823,8 +1823,8 @@
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_ACCEPTED}: Received Event RAN_CONN_E_UNUSED
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_ACCEPTED}: state_chg to RAN_CONN_S_RELEASING
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use + release == 1 (0x100: release)
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + vlr_subscr_cancel_attach_fsm: now used by 3 (attached,conn,vlr_subscr_cancel_attach_fsm)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - vlr_subscr_cancel_attach_fsm: now used by 2 (attached,conn)
 - Iu Release --UTRAN-Iu--> MS
   iu_release_sent == 1
 - RNC sends Iu Release Complete
@@ -1836,7 +1836,7 @@
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_DONE}: Removing from parent RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_DONE}: Deferring: will deallocate with RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ)
 DRLL IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: Freeing RAN connection
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - conn: now used by 1 (attached)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_RELEASED}: Deallocated, including all deferred deallocations
 - all requests serviced, conn has been released
   llist_count(&net->ran_conns) == 0
@@ -1848,12 +1848,12 @@
 DREF unknown: MSC conn use + compl_l3 == 1 (0x1: compl_l3)
 DRLL Dispatching 04.08 message GSM48_MT_MM_IMSI_DETACH_IND (0x5:0x1)
 DMM IMSI DETACH INDICATION: MI(IMSI)=901700000010650
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 0
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + vlr_subscr_cancel_attach_fsm: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,vlr_subscr_cancel_attach_fsm)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - vlr_subscr_cancel_attach_fsm: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - attached: now used by 1 (gsm48_rx_mm_imsi_detach_ind)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - gsm48_rx_mm_imsi_detach_ind: now used by 0 (-)
 DREF freeing VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100
 DMM RAN_conn{RAN_CONN_S_NEW}: Received Event RAN_CONN_E_CN_CLOSE
 DMM RAN_conn{RAN_CONN_S_NEW}: state_chg to RAN_CONN_S_RELEASING
@@ -1888,12 +1888,12 @@
 DVLR vlr_lu_fsm(IMSI-901700000010650:GERAN-A-0:LU){VLR_ULA_S_IDLE}: is child of RAN_conn(IMSI-901700000010650:GERAN-A-0:LU)
 DVLR vlr_lu_fsm(IMSI-901700000010650:GERAN-A-0:LU){VLR_ULA_S_IDLE}: rev=R99 net=GERAN Auth (no Ciph)
 DVLR vlr_lu_fsm(IMSI-901700000010650:GERAN-A-0:LU){VLR_ULA_S_IDLE}: Received Event VLR_ULA_E_UPDATE_LA
-DREF VLR subscr unknown usage increases to: 1
+DREF VLR subscr unknown + _lu_fsm_associate_vsub: now used by 1 (_lu_fsm_associate_vsub)
 DVLR set IMSI on subscriber; IMSI=901700000010650 id=901700000010650
 DVLR New subscr, IMSI: 901700000010650
-DREF VLR subscr IMSI-901700000010650 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650 + conn: now used by 2 (_lu_fsm_associate_vsub,conn)
 DMM RAN_conn(IMSI-901700000010650:GERAN-A-0:LU){RAN_CONN_S_NEW}: Updated ID
-DREF VLR subscr IMSI-901700000010650 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650 - _lu_fsm_associate_vsub: now used by 1 (conn)
 DVLR vlr_lu_fsm(IMSI-901700000010650:GERAN-A-0:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1()
 DVLR vlr_lu_fsm(IMSI-901700000010650:GERAN-A-0:LU){VLR_ULA_S_IDLE}: state_chg to VLR_ULA_S_WAIT_AUTH
 DVLR VLR_Authenticate(IMSI-901700000010650:GERAN-A-0:LU){VLR_SUB_AS_NEEDS_AUTH}: Allocated
@@ -1911,7 +1911,7 @@
 - from HLR, rx _SEND_AUTH_INFO_RESULT, only one tuple; VLR sends Auth Req to MS
 <-- GSUP rx OSMO_GSUP_MSGT_SEND_AUTH_INFO_RESULT: 0a010809710000000156f00362201039fa2f4e3d523d8619a73b4f65c3e14d21049b36efdf2208059a4f668f6fbe39231027497388b6cb044648f396aa155b95ef2410f64735036e5871319c679f4742a75ea125108704f5ba55f30000d2ee44b22c8ea9192708e229c19e791f2e41
 DVLR GSUP rx 111: 0a010809710000000156f00362201039fa2f4e3d523d8619a73b4f65c3e14d21049b36efdf2208059a4f668f6fbe39231027497388b6cb044648f396aa155b95ef2410f64735036e5871319c679f4742a75ea125108704f5ba55f30000d2ee44b22c8ea9192708e229c19e791f2e41
-DREF VLR subscr IMSI-901700000010650 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650 + vlr_gsupc_read_cb: now used by 2 (conn,vlr_gsupc_read_cb)
 DVLR VLR_Authenticate(IMSI-901700000010650:GERAN-A-0:LU){VLR_SUB_AS_NEEDS_AUTH_WAIT_AI}: Received Event VLR_AUTH_E_HLR_SAI_ACK
 DVLR SUBSCR(IMSI-901700000010650) Received 1 auth tuples
 DVLR VLR_Authenticate(IMSI-901700000010650:GERAN-A-0:LU){VLR_SUB_AS_NEEDS_AUTH_WAIT_AI}: state_chg to VLR_SUB_AS_WAIT_RESP
@@ -1920,7 +1920,7 @@
 - ...rand=39fa2f4e3d523d8619a73b4f65c3e14d
 - ...autn=8704f5ba55f30000d2ee44b22c8ea919
 - ...expecting res=e229c19e791f2e41
-DREF VLR subscr IMSI-901700000010650 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650 - vlr_gsupc_read_cb: now used by 1 (conn)
 <-- GSUP rx OSMO_GSUP_MSGT_SEND_AUTH_INFO_RESULT: vlr_gsupc_read_cb() returns 0
   auth_request_sent == 1
   lu_result_sent == 0
@@ -1956,19 +1956,19 @@
 - HLR sends _INSERT_DATA_REQUEST, VLR responds with _INSERT_DATA_RESULT
 <-- GSUP rx OSMO_GSUP_MSGT_INSERT_DATA_REQUEST: 10010809710000000156f00804032443f2
 DVLR GSUP rx 17: 10010809710000000156f00804032443f2
-DREF VLR subscr IMSI-901700000010650 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650 + vlr_gsupc_read_cb: now used by 2 (conn,vlr_gsupc_read_cb)
 DVLR IMSI:901700000010650 has MSISDN:42342
-DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342) VLR: update for IMSI=901700000010650 (MSISDN=42342, used=2)
+DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342) VLR: update for IMSI=901700000010650 (MSISDN=42342)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:GERAN-A-0:LU){RAN_CONN_S_AUTH_CIPH}: Updated ID
 DVLR GSUP tx: 12010809710000000156f0
 GSUP --> HLR: OSMO_GSUP_MSGT_INSERT_DATA_RESULT: 12010809710000000156f0
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342 - vlr_gsupc_read_cb: now used by 1 (conn)
 <-- GSUP rx OSMO_GSUP_MSGT_INSERT_DATA_REQUEST: vlr_gsupc_read_cb() returns 0
   lu_result_sent == 0
 - HLR also sends GSUP _UPDATE_LOCATION_RESULT
 <-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: 06010809710000000156f0
 DVLR GSUP rx 11: 06010809710000000156f0
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342 + vlr_gsupc_read_cb: now used by 2 (conn,vlr_gsupc_read_cb)
 DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:GERAN-A-0:LU){VLR_ULA_S_WAIT_HLR_UPD}: Received Event VLR_ULA_E_HLR_LU_RES
 DVLR upd_hlr_vlr_fsm(IMSI-901700000010650:GERAN-A-0:LU){UPD_HLR_VLR_S_WAIT_FOR_DATA}: Received Event UPD_HLR_VLR_E_UPD_LOC_ACK
 DVLR upd_hlr_vlr_fsm(IMSI-901700000010650:GERAN-A-0:LU){UPD_HLR_VLR_S_WAIT_FOR_DATA}: state_chg to UPD_HLR_VLR_S_DONE
@@ -1982,12 +1982,12 @@
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:GERAN-A-0:LU){LU_COMPL_VLR_S_INIT}: state_chg to LU_COMPL_VLR_S_WAIT_SUB_PRES
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:GERAN-A-0:LU){LU_COMPL_VLR_S_WAIT_SUB_PRES}: Received Event LU_COMPL_VLR_E_SUB_PRES_COMPL
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:GERAN-A-0:LU){LU_COMPL_VLR_S_WAIT_SUB_PRES}: lu_compl_vlr_new_tmsi()
-DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100) VLR: update for IMSI=901700000010650 (MSISDN=42342, used=2)
+DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100) VLR: update for IMSI=901700000010650 (MSISDN=42342)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100:GERAN-A-0:LU){RAN_CONN_S_AUTH_CIPH}: Updated ID
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:GERAN-A-0:LU){LU_COMPL_VLR_S_WAIT_SUB_PRES}: state_chg to LU_COMPL_VLR_S_WAIT_TMSI_CNF
 - sending LU Accept for IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100, with TMSI 0x03020100
 DVLR upd_hlr_vlr_fsm(IMSI-901700000010650:GERAN-A-0:LU){UPD_HLR_VLR_S_DONE}: Deallocated
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 - vlr_gsupc_read_cb: now used by 1 (conn)
 <-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: vlr_gsupc_read_cb() returns 0
   lu_result_sent == 1
 - a LU Accept with a new TMSI was sent, waiting for TMSI Realloc Compl
@@ -2003,12 +2003,12 @@
 DRLL Dispatching 04.08 message SMS:0x01 (0x9:0x1)
 DRLL subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100: Message not permitted for initial conn: SMS:0x01
 - even though the TMSI is not acked, we can already find the subscr with it
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 + _test_auth_reuse: now used by 2 (conn,_test_auth_reuse)
   vsub != NULL == 1
   strcmp(vsub->imsi, imsi) == 0
   vsub->tmsi_new == 0x03020100
   vsub->tmsi == 0xffffffff
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 - _test_auth_reuse: now used by 1 (conn)
 - MS sends TMSI Realloc Complete
   MSC <--GERAN-A-- MS: GSM48_MT_MM_TMSI_REALL_COMPL
 DREF IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100: MSC conn use + dtap == 1 (0x2: dtap)
@@ -2016,9 +2016,9 @@
 DMM TMSI Reallocation Completed. Subscriber: IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100
 DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100:GERAN-A-0:LU){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_NEW_TMSI_ACK
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:GERAN-A-0:LU){LU_COMPL_VLR_S_WAIT_TMSI_CNF}: Received Event LU_COMPL_VLR_E_NEW_TMSI_ACK
-DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100) VLR: update for IMSI=901700000010650 (MSISDN=42342, used=1)
+DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100) VLR: update for IMSI=901700000010650 (MSISDN=42342)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:LU){RAN_CONN_S_AUTH_CIPH}: Updated ID
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + attached: now used by 2 (conn,attached)
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:GERAN-A-0:LU){LU_COMPL_VLR_S_WAIT_TMSI_CNF}: state_chg to LU_COMPL_VLR_S_DONE
 DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:LU){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_LU_COMPL_SUCCESS
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:GERAN-A-0:LU){LU_COMPL_VLR_S_DONE}: Terminating (cause = OSMO_FSM_TERM_PARENT)
@@ -2030,8 +2030,8 @@
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:LU){RAN_CONN_S_ACCEPTED}: Received Event RAN_CONN_E_UNUSED
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:LU){RAN_CONN_S_ACCEPTED}: state_chg to RAN_CONN_S_RELEASING
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use + release == 2 (0x102: dtap,release)
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + vlr_subscr_cancel_attach_fsm: now used by 3 (conn,attached,vlr_subscr_cancel_attach_fsm)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - vlr_subscr_cancel_attach_fsm: now used by 2 (conn,attached)
 - BSSAP Clear --GERAN-A--> MS
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use - dtap == 1 (0x100: release)
   bssap_clear_sent == 1
@@ -2045,15 +2045,15 @@
 DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:LU){VLR_ULA_S_DONE}: fsm_lu_cleanup called with cause OSMO_FSM_TERM_PARENT
 DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:LU){VLR_ULA_S_DONE}: Deferring: will deallocate with RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:LU)
 DRLL IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: Freeing RAN connection
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - conn: now used by 1 (attached)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:LU){RAN_CONN_S_RELEASED}: Deallocated, including all deferred deallocations
 - LU was successful, and the conn has already been closed
   llist_count(&net->ran_conns) == 0
 ---
 - Now the auth tuple has use_count == 1, as much as is allowed.
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + _test_auth_reuse: now used by 2 (attached,_test_auth_reuse)
   vsub->last_tuple->use_count == 1
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - _test_auth_reuse: now used by 1 (attached)
 ---
 - after a while, a new conn sends a CM Service Request. VLR responds with Auth Req, and needs to request a second auth vector from HLR
   MSC <--GERAN-A-- MS: GSM48_MT_MM_CM_SERV_REQ
@@ -2067,8 +2067,8 @@
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_INIT}: is child of RAN_conn(IMSI-901700000010650:GERAN-A-0:CM_SERVICE_REQ)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_INIT}: rev=R99 net=GERAN Auth (no Ciph)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_INIT}: Received Event PR_ARQ_E_START
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + proc_arq_vlr_fn_init: now used by 2 (attached,proc_arq_vlr_fn_init)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + conn: now used by 3 (attached,proc_arq_vlr_fn_init,conn)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_NEW}: Updated ID
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_INIT}: proc_arq_vlr_fn_post_imsi()
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_INIT}: state_chg to PR_ARQ_S_WAIT_AUTH
@@ -2078,7 +2078,7 @@
 DVLR GSUP tx: 08010809710000000156f0
 GSUP --> HLR: OSMO_GSUP_MSGT_SEND_AUTH_INFO_REQUEST: 08010809710000000156f0
 DVLR VLR_Authenticate(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){VLR_SUB_AS_NEEDS_AUTH}: state_chg to VLR_SUB_AS_NEEDS_AUTH_WAIT_AI
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - proc_arq_vlr_fn_init: now used by 2 (attached,conn)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_NEW}: Received Event RAN_CONN_E_COMPLETE_LAYER_3
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_NEW}: state_chg to RAN_CONN_S_AUTH_CIPH
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use - compl_l3 == 0 (0x0: )
@@ -2090,7 +2090,7 @@
 - from HLR, rx _SEND_AUTH_INFO_RESULT, second tuple; VLR sends Auth Req to MS
 <-- GSUP rx OSMO_GSUP_MSGT_SEND_AUTH_INFO_RESULT: 0a010809710000000156f003622010c187a53a5e6b9d573cac7c74451fd46d210485aa31302208d3d50a000bf04f6e23101159ec926a50e98c034a6b7d7c9f418d2410df3a03d9ca5335641efc8e36d76cd20b25101843a645b98d00005b2d666af46c45d927087db47cf7f81e4dc7
 DVLR GSUP rx 111: 0a010809710000000156f003622010c187a53a5e6b9d573cac7c74451fd46d210485aa31302208d3d50a000bf04f6e23101159ec926a50e98c034a6b7d7c9f418d2410df3a03d9ca5335641efc8e36d76cd20b25101843a645b98d00005b2d666af46c45d927087db47cf7f81e4dc7
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + vlr_gsupc_read_cb: now used by 3 (attached,conn,vlr_gsupc_read_cb)
 DVLR VLR_Authenticate(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){VLR_SUB_AS_NEEDS_AUTH_WAIT_AI}: Received Event VLR_AUTH_E_HLR_SAI_ACK
 DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100) Received 1 auth tuples
 DVLR VLR_Authenticate(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){VLR_SUB_AS_NEEDS_AUTH_WAIT_AI}: state_chg to VLR_SUB_AS_WAIT_RESP
@@ -2099,7 +2099,7 @@
 - ...rand=c187a53a5e6b9d573cac7c74451fd46d
 - ...autn=1843a645b98d00005b2d666af46c45d9
 - ...expecting res=7db47cf7f81e4dc7
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - vlr_gsupc_read_cb: now used by 2 (attached,conn)
 <-- GSUP rx OSMO_GSUP_MSGT_SEND_AUTH_INFO_RESULT: vlr_gsupc_read_cb() returns 0
   auth_request_sent == 1
   cm_service_result_sent == 0
@@ -2138,8 +2138,8 @@
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_ACCEPTED}: Received Event RAN_CONN_E_UNUSED
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_ACCEPTED}: state_chg to RAN_CONN_S_RELEASING
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use + release == 1 (0x100: release)
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + vlr_subscr_cancel_attach_fsm: now used by 3 (attached,conn,vlr_subscr_cancel_attach_fsm)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - vlr_subscr_cancel_attach_fsm: now used by 2 (attached,conn)
 - BSSAP Clear --GERAN-A--> MS
   bssap_clear_sent == 1
 - BSS sends BSSMAP Clear Complete
@@ -2151,7 +2151,7 @@
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_DONE}: Removing from parent RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){PR_ARQ_S_DONE}: Deferring: will deallocate with RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ)
 DRLL IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: Freeing RAN connection
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - conn: now used by 1 (attached)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:GERAN-A-0:CM_SERVICE_REQ){RAN_CONN_S_RELEASED}: Deallocated, including all deferred deallocations
 - all requests serviced, conn has been released
   llist_count(&net->ran_conns) == 0
@@ -2163,12 +2163,12 @@
 DREF unknown: MSC conn use + compl_l3 == 1 (0x1: compl_l3)
 DRLL Dispatching 04.08 message GSM48_MT_MM_IMSI_DETACH_IND (0x5:0x1)
 DMM IMSI DETACH INDICATION: MI(IMSI)=901700000010650
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 0
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + vlr_subscr_cancel_attach_fsm: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,vlr_subscr_cancel_attach_fsm)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - vlr_subscr_cancel_attach_fsm: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - attached: now used by 1 (gsm48_rx_mm_imsi_detach_ind)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - gsm48_rx_mm_imsi_detach_ind: now used by 0 (-)
 DREF freeing VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100
 DMM RAN_conn{RAN_CONN_S_NEW}: Received Event RAN_CONN_E_CN_CLOSE
 DMM RAN_conn{RAN_CONN_S_NEW}: state_chg to RAN_CONN_S_RELEASING
@@ -2203,12 +2203,12 @@
 DVLR vlr_lu_fsm(IMSI-901700000010650:UTRAN-Iu-42:LU){VLR_ULA_S_IDLE}: is child of RAN_conn(IMSI-901700000010650:UTRAN-Iu-42:LU)
 DVLR vlr_lu_fsm(IMSI-901700000010650:UTRAN-Iu-42:LU){VLR_ULA_S_IDLE}: rev=R99 net=UTRAN Auth+Ciph
 DVLR vlr_lu_fsm(IMSI-901700000010650:UTRAN-Iu-42:LU){VLR_ULA_S_IDLE}: Received Event VLR_ULA_E_UPDATE_LA
-DREF VLR subscr unknown usage increases to: 1
+DREF VLR subscr unknown + _lu_fsm_associate_vsub: now used by 1 (_lu_fsm_associate_vsub)
 DVLR set IMSI on subscriber; IMSI=901700000010650 id=901700000010650
 DVLR New subscr, IMSI: 901700000010650
-DREF VLR subscr IMSI-901700000010650 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650 + conn: now used by 2 (_lu_fsm_associate_vsub,conn)
 DMM RAN_conn(IMSI-901700000010650:UTRAN-Iu-42:LU){RAN_CONN_S_NEW}: Updated ID
-DREF VLR subscr IMSI-901700000010650 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650 - _lu_fsm_associate_vsub: now used by 1 (conn)
 DVLR vlr_lu_fsm(IMSI-901700000010650:UTRAN-Iu-42:LU){VLR_ULA_S_IDLE}: vlr_loc_upd_node1()
 DVLR vlr_lu_fsm(IMSI-901700000010650:UTRAN-Iu-42:LU){VLR_ULA_S_IDLE}: state_chg to VLR_ULA_S_WAIT_AUTH
 DVLR VLR_Authenticate(IMSI-901700000010650:UTRAN-Iu-42:LU){VLR_SUB_AS_NEEDS_AUTH}: Allocated
@@ -2226,7 +2226,7 @@
 - from HLR, rx _SEND_AUTH_INFO_RESULT, only one tuple; VLR sends Auth Req to MS
 <-- GSUP rx OSMO_GSUP_MSGT_SEND_AUTH_INFO_RESULT: 0a010809710000000156f00362201039fa2f4e3d523d8619a73b4f65c3e14d21049b36efdf2208059a4f668f6fbe39231027497388b6cb044648f396aa155b95ef2410f64735036e5871319c679f4742a75ea125108704f5ba55f30000d2ee44b22c8ea9192708e229c19e791f2e41
 DVLR GSUP rx 111: 0a010809710000000156f00362201039fa2f4e3d523d8619a73b4f65c3e14d21049b36efdf2208059a4f668f6fbe39231027497388b6cb044648f396aa155b95ef2410f64735036e5871319c679f4742a75ea125108704f5ba55f30000d2ee44b22c8ea9192708e229c19e791f2e41
-DREF VLR subscr IMSI-901700000010650 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650 + vlr_gsupc_read_cb: now used by 2 (conn,vlr_gsupc_read_cb)
 DVLR VLR_Authenticate(IMSI-901700000010650:UTRAN-Iu-42:LU){VLR_SUB_AS_NEEDS_AUTH_WAIT_AI}: Received Event VLR_AUTH_E_HLR_SAI_ACK
 DVLR SUBSCR(IMSI-901700000010650) Received 1 auth tuples
 DVLR VLR_Authenticate(IMSI-901700000010650:UTRAN-Iu-42:LU){VLR_SUB_AS_NEEDS_AUTH_WAIT_AI}: state_chg to VLR_SUB_AS_WAIT_RESP
@@ -2235,7 +2235,7 @@
 - ...rand=39fa2f4e3d523d8619a73b4f65c3e14d
 - ...autn=8704f5ba55f30000d2ee44b22c8ea919
 - ...expecting res=e229c19e791f2e41
-DREF VLR subscr IMSI-901700000010650 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650 - vlr_gsupc_read_cb: now used by 1 (conn)
 <-- GSUP rx OSMO_GSUP_MSGT_SEND_AUTH_INFO_RESULT: vlr_gsupc_read_cb() returns 0
   auth_request_sent == 1
   lu_result_sent == 0
@@ -2283,19 +2283,19 @@
 - HLR sends _INSERT_DATA_REQUEST, VLR responds with _INSERT_DATA_RESULT
 <-- GSUP rx OSMO_GSUP_MSGT_INSERT_DATA_REQUEST: 10010809710000000156f00804032443f2
 DVLR GSUP rx 17: 10010809710000000156f00804032443f2
-DREF VLR subscr IMSI-901700000010650 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650 + vlr_gsupc_read_cb: now used by 2 (conn,vlr_gsupc_read_cb)
 DVLR IMSI:901700000010650 has MSISDN:42342
-DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342) VLR: update for IMSI=901700000010650 (MSISDN=42342, used=2)
+DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342) VLR: update for IMSI=901700000010650 (MSISDN=42342)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:UTRAN-Iu-42:LU){RAN_CONN_S_AUTH_CIPH}: Updated ID
 DVLR GSUP tx: 12010809710000000156f0
 GSUP --> HLR: OSMO_GSUP_MSGT_INSERT_DATA_RESULT: 12010809710000000156f0
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342 - vlr_gsupc_read_cb: now used by 1 (conn)
 <-- GSUP rx OSMO_GSUP_MSGT_INSERT_DATA_REQUEST: vlr_gsupc_read_cb() returns 0
   lu_result_sent == 0
 - HLR also sends GSUP _UPDATE_LOCATION_RESULT
 <-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: 06010809710000000156f0
 DVLR GSUP rx 11: 06010809710000000156f0
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342 + vlr_gsupc_read_cb: now used by 2 (conn,vlr_gsupc_read_cb)
 DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:UTRAN-Iu-42:LU){VLR_ULA_S_WAIT_HLR_UPD}: Received Event VLR_ULA_E_HLR_LU_RES
 DVLR upd_hlr_vlr_fsm(IMSI-901700000010650:UTRAN-Iu-42:LU){UPD_HLR_VLR_S_WAIT_FOR_DATA}: Received Event UPD_HLR_VLR_E_UPD_LOC_ACK
 DVLR upd_hlr_vlr_fsm(IMSI-901700000010650:UTRAN-Iu-42:LU){UPD_HLR_VLR_S_WAIT_FOR_DATA}: state_chg to UPD_HLR_VLR_S_DONE
@@ -2309,12 +2309,12 @@
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:UTRAN-Iu-42:LU){LU_COMPL_VLR_S_INIT}: state_chg to LU_COMPL_VLR_S_WAIT_SUB_PRES
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:UTRAN-Iu-42:LU){LU_COMPL_VLR_S_WAIT_SUB_PRES}: Received Event LU_COMPL_VLR_E_SUB_PRES_COMPL
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:UTRAN-Iu-42:LU){LU_COMPL_VLR_S_WAIT_SUB_PRES}: lu_compl_vlr_new_tmsi()
-DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100) VLR: update for IMSI=901700000010650 (MSISDN=42342, used=2)
+DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100) VLR: update for IMSI=901700000010650 (MSISDN=42342)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100:UTRAN-Iu-42:LU){RAN_CONN_S_AUTH_CIPH}: Updated ID
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:UTRAN-Iu-42:LU){LU_COMPL_VLR_S_WAIT_SUB_PRES}: state_chg to LU_COMPL_VLR_S_WAIT_TMSI_CNF
 - sending LU Accept for IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100, with TMSI 0x03020100
 DVLR upd_hlr_vlr_fsm(IMSI-901700000010650:UTRAN-Iu-42:LU){UPD_HLR_VLR_S_DONE}: Deallocated
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 - vlr_gsupc_read_cb: now used by 1 (conn)
 <-- GSUP rx OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: vlr_gsupc_read_cb() returns 0
   lu_result_sent == 1
 - a LU Accept with a new TMSI was sent, waiting for TMSI Realloc Compl
@@ -2330,12 +2330,12 @@
 DRLL Dispatching 04.08 message SMS:0x01 (0x9:0x1)
 DRLL subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100: Message not permitted for initial conn: SMS:0x01
 - even though the TMSI is not acked, we can already find the subscr with it
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 + _test_auth_reuse: now used by 2 (conn,_test_auth_reuse)
   vsub != NULL == 1
   strcmp(vsub->imsi, imsi) == 0
   vsub->tmsi_new == 0x03020100
   vsub->tmsi == 0xffffffff
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100 - _test_auth_reuse: now used by 1 (conn)
 - MS sends TMSI Realloc Complete
   MSC <--UTRAN-Iu-- MS: GSM48_MT_MM_TMSI_REALL_COMPL
 DREF IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100: MSC conn use + dtap == 1 (0x2: dtap)
@@ -2343,9 +2343,9 @@
 DMM TMSI Reallocation Completed. Subscriber: IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100
 DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:TMSInew-0x03020100:UTRAN-Iu-42:LU){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_NEW_TMSI_ACK
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:UTRAN-Iu-42:LU){LU_COMPL_VLR_S_WAIT_TMSI_CNF}: Received Event LU_COMPL_VLR_E_NEW_TMSI_ACK
-DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100) VLR: update for IMSI=901700000010650 (MSISDN=42342, used=1)
+DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100) VLR: update for IMSI=901700000010650 (MSISDN=42342)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:LU){RAN_CONN_S_AUTH_CIPH}: Updated ID
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + attached: now used by 2 (conn,attached)
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:UTRAN-Iu-42:LU){LU_COMPL_VLR_S_WAIT_TMSI_CNF}: state_chg to LU_COMPL_VLR_S_DONE
 DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:LU){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_LU_COMPL_SUCCESS
 DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:UTRAN-Iu-42:LU){LU_COMPL_VLR_S_DONE}: Terminating (cause = OSMO_FSM_TERM_PARENT)
@@ -2357,8 +2357,8 @@
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:LU){RAN_CONN_S_ACCEPTED}: Received Event RAN_CONN_E_UNUSED
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:LU){RAN_CONN_S_ACCEPTED}: state_chg to RAN_CONN_S_RELEASING
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use + release == 2 (0x102: dtap,release)
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + vlr_subscr_cancel_attach_fsm: now used by 3 (conn,attached,vlr_subscr_cancel_attach_fsm)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - vlr_subscr_cancel_attach_fsm: now used by 2 (conn,attached)
 - Iu Release --UTRAN-Iu--> MS
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use - dtap == 1 (0x100: release)
   iu_release_sent == 1
@@ -2372,15 +2372,15 @@
 DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:LU){VLR_ULA_S_DONE}: fsm_lu_cleanup called with cause OSMO_FSM_TERM_PARENT
 DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:LU){VLR_ULA_S_DONE}: Deferring: will deallocate with RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:LU)
 DRLL IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: Freeing RAN connection
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - conn: now used by 1 (attached)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:LU){RAN_CONN_S_RELEASED}: Deallocated, including all deferred deallocations
 - LU was successful, and the conn has already been closed
   llist_count(&net->ran_conns) == 0
 ---
 - Now the auth tuple has use_count == 1, as much as is allowed.
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + _test_auth_reuse: now used by 2 (attached,_test_auth_reuse)
   vsub->last_tuple->use_count == 1
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - _test_auth_reuse: now used by 1 (attached)
 ---
 - after a while, a new conn sends a CM Service Request. VLR responds with Auth Req, and needs to request a second auth vector from HLR
   MSC <--UTRAN-Iu-- MS: GSM48_MT_MM_CM_SERV_REQ
@@ -2394,8 +2394,8 @@
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_INIT}: is child of RAN_conn(IMSI-901700000010650:UTRAN-Iu-42:CM_SERVICE_REQ)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_INIT}: rev=R99 net=UTRAN Auth+Ciph
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_INIT}: Received Event PR_ARQ_E_START
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + proc_arq_vlr_fn_init: now used by 2 (attached,proc_arq_vlr_fn_init)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + conn: now used by 3 (attached,proc_arq_vlr_fn_init,conn)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_NEW}: Updated ID
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_INIT}: proc_arq_vlr_fn_post_imsi()
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_INIT}: state_chg to PR_ARQ_S_WAIT_AUTH
@@ -2405,7 +2405,7 @@
 DVLR GSUP tx: 08010809710000000156f0
 GSUP --> HLR: OSMO_GSUP_MSGT_SEND_AUTH_INFO_REQUEST: 08010809710000000156f0
 DVLR VLR_Authenticate(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){VLR_SUB_AS_NEEDS_AUTH}: state_chg to VLR_SUB_AS_NEEDS_AUTH_WAIT_AI
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - proc_arq_vlr_fn_init: now used by 2 (attached,conn)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_NEW}: Received Event RAN_CONN_E_COMPLETE_LAYER_3
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_NEW}: state_chg to RAN_CONN_S_AUTH_CIPH
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use - compl_l3 == 0 (0x0: )
@@ -2417,7 +2417,7 @@
 - from HLR, rx _SEND_AUTH_INFO_RESULT, second tuple; VLR sends Auth Req to MS
 <-- GSUP rx OSMO_GSUP_MSGT_SEND_AUTH_INFO_RESULT: 0a010809710000000156f003622010c187a53a5e6b9d573cac7c74451fd46d210485aa31302208d3d50a000bf04f6e23101159ec926a50e98c034a6b7d7c9f418d2410df3a03d9ca5335641efc8e36d76cd20b25101843a645b98d00005b2d666af46c45d927087db47cf7f81e4dc7
 DVLR GSUP rx 111: 0a010809710000000156f003622010c187a53a5e6b9d573cac7c74451fd46d210485aa31302208d3d50a000bf04f6e23101159ec926a50e98c034a6b7d7c9f418d2410df3a03d9ca5335641efc8e36d76cd20b25101843a645b98d00005b2d666af46c45d927087db47cf7f81e4dc7
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + vlr_gsupc_read_cb: now used by 3 (attached,conn,vlr_gsupc_read_cb)
 DVLR VLR_Authenticate(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){VLR_SUB_AS_NEEDS_AUTH_WAIT_AI}: Received Event VLR_AUTH_E_HLR_SAI_ACK
 DVLR SUBSCR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100) Received 1 auth tuples
 DVLR VLR_Authenticate(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){VLR_SUB_AS_NEEDS_AUTH_WAIT_AI}: state_chg to VLR_SUB_AS_WAIT_RESP
@@ -2426,7 +2426,7 @@
 - ...rand=c187a53a5e6b9d573cac7c74451fd46d
 - ...autn=1843a645b98d00005b2d666af46c45d9
 - ...expecting res=7db47cf7f81e4dc7
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - vlr_gsupc_read_cb: now used by 2 (attached,conn)
 <-- GSUP rx OSMO_GSUP_MSGT_SEND_AUTH_INFO_RESULT: vlr_gsupc_read_cb() returns 0
   auth_request_sent == 1
   cm_service_result_sent == 0
@@ -2478,8 +2478,8 @@
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_ACCEPTED}: Received Event RAN_CONN_E_UNUSED
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_ACCEPTED}: state_chg to RAN_CONN_S_RELEASING
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use + release == 1 (0x100: release)
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + vlr_subscr_cancel_attach_fsm: now used by 3 (attached,conn,vlr_subscr_cancel_attach_fsm)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - vlr_subscr_cancel_attach_fsm: now used by 2 (attached,conn)
 - Iu Release --UTRAN-Iu--> MS
   iu_release_sent == 1
 - RNC sends Iu Release Complete
@@ -2491,7 +2491,7 @@
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_DONE}: Removing from parent RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){PR_ARQ_S_DONE}: Deferring: will deallocate with RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ)
 DRLL IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: Freeing RAN connection
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - conn: now used by 1 (attached)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_RELEASED}: Deallocated, including all deferred deallocations
 - all requests serviced, conn has been released
   llist_count(&net->ran_conns) == 0
@@ -2503,12 +2503,12 @@
 DREF unknown: MSC conn use + compl_l3 == 1 (0x1: compl_l3)
 DRLL Dispatching 04.08 message GSM48_MT_MM_IMSI_DETACH_IND (0x5:0x1)
 DMM IMSI DETACH INDICATION: MI(IMSI)=901700000010650
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 0
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + vlr_subscr_cancel_attach_fsm: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,vlr_subscr_cancel_attach_fsm)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - vlr_subscr_cancel_attach_fsm: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - attached: now used by 1 (gsm48_rx_mm_imsi_detach_ind)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - gsm48_rx_mm_imsi_detach_ind: now used by 0 (-)
 DREF freeing VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100
 DMM RAN_conn{RAN_CONN_S_NEW}: Received Event RAN_CONN_E_CN_CLOSE
 DMM RAN_conn{RAN_CONN_S_NEW}: state_chg to RAN_CONN_S_RELEASING