vlr_subscr: use osmo_use_count

Depends: Ife31e6798b4e728a23913179e346552a7dd338c0 (libosmocore)
Change-Id: Ib06d030e8464abe415ff597d462ed40eeddef475

1 files changed, 138 insertions, 138 deletions

diff --git a/tests/msc_vlr/msc_vlr_test_call.err b/tests/msc_vlr/msc_vlr_test_call.err
index 3a2885a12..4f0f4b500 100644
--- a/tests/msc_vlr/msc_vlr_test_call.err
+++ b/tests/msc_vlr/msc_vlr_test_call.err
@@ -16,12 +16,12 @@ DVLR vlr_lu_fsm(IMSI-901700000010650:UTRAN-Iu-42:LU){VLR_ULA_S_IDLE}: Allocated
 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
@@ -39,7 +39,7 @@ DMM RAN_conn(IMSI-901700000010650:UTRAN-Iu-42:LU){RAN_CONN_S_AUTH_CIPH}: Awaitin
 - from HLR, rx _SEND_AUTH_INFO_RESULT; VLR sends Auth Req to MS
 <-- GSUP rx OSMO_GSUP_MSGT_SEND_AUTH_INFO_RESULT: 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
 DVLR GSUP rx 511: 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
-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 5 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
@@ -48,7 +48,7 @@ DVLR VLR_Authenticate(IMSI-901700000010650:UTRAN-Iu-42:LU){VLR_SUB_AS_WAIT_RESP}
 - ...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
@@ -96,19 +96,19 @@ DVLR upd_hlr_vlr_fsm(IMSI-901700000010650:UTRAN-Iu-42:LU){UPD_HLR_VLR_S_INIT}: s
 - 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
@@ -122,12 +122,12 @@ DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:UTRAN-Iu-42:LU){LU_COMPL
 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
@@ -140,9 +140,9 @@ DRLL Dispatching 04.08 message GSM48_MT_MM_TMSI_REALL_COMPL (0x5:0x1b)
 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)
@@ -154,8 +154,8 @@ DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:LU){R
 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
@@ -170,14 +170,14 @@ DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:LU
 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
   llist_count(&net->ran_conns) == 0
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + standard_lu: now used by 2 (attached,standard_lu)
   vsub != NULL == 1
   strcmp(vsub->imsi, IMSI) == 0
   LAC == 23
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - standard_lu: now used by 1 (attached)
 ---
 - after a while, a new conn sends a CM Service Request. VLR responds with Auth Req, 2nd auth vector
   MSC <--UTRAN-Iu-- MS: GSM48_MT_MM_CM_SERV_REQ
@@ -191,8 +191,8 @@ DVLR Process_Access_Request_VLR(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}: 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
@@ -205,7 +205,7 @@ DVLR VLR_Authenticate(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu
 - ...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 - 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: )
@@ -266,7 +266,7 @@ DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use + dtap == 2
 DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
 DCC Unknown transaction ID 8, creating new trans.
 DCC (ti 08 sub IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 callref 80000001) New transaction
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + CC: now used by 3 (attached,conn,CC)
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use + trans_cc == 3 (0x1a: dtap,cm_service,trans_cc)
 DMM IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: rx msg GSM48_MT_CC_SETUP: received_cm_service_request changes to false
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use - cm_service == 2 (0x12: dtap,trans_cc)
@@ -352,15 +352,15 @@ DCC Sending 'MNCC_REL_CNF' to MNCC.
   MS <--Call Release-- MSC: subscr=IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 callref=0x0
 DCC (ti 08 sub IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100) new state RELEASE_REQ -> NULL
 DCC (sub 42342) stopping pending guard timer
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - CC: now used by 2 (attached,conn)
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use - trans_cc == 1 (0x2: dtap)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_COMMUNICATING}: Received Event RAN_CONN_E_COMMUNICATING
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use - dtap == 0 (0x0: )
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_COMMUNICATING}: Received Event RAN_CONN_E_UNUSED
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_COMMUNICATING}: 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
 - RNC sends Iu Release Complete
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use - release == 0 (0x0: )
@@ -371,7 +371,7 @@ DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x0302010
 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
   llist_count(&net->ran_conns) == 0
 DREF freeing VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100
@@ -395,12 +395,12 @@ DVLR vlr_lu_fsm(IMSI-901700000010650:UTRAN-Iu-42:LU){VLR_ULA_S_IDLE}: Allocated
 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
@@ -418,7 +418,7 @@ DMM RAN_conn(IMSI-901700000010650:UTRAN-Iu-42:LU){RAN_CONN_S_AUTH_CIPH}: Awaitin
 - from HLR, rx _SEND_AUTH_INFO_RESULT; VLR sends Auth Req to MS
 <-- GSUP rx OSMO_GSUP_MSGT_SEND_AUTH_INFO_RESULT: 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
 DVLR GSUP rx 511: 0a010809710000000156f00362201039fa2f4e3d523d8619a73b4f65c3e14d21049b36efdf2208059a4f668f6fbe39231027497388b6cb044648f396aa155b95ef2410f64735036e5871319c679f4742a75ea125108704f5ba55f30000d2ee44b22c8ea9192708e229c19e791f2e4103622010c187a53a5e6b9d573cac7c74451fd46d210485aa31302208d3d50a000bf04f6e23101159ec926a50e98c034a6b7d7c9f418d2410df3a03d9ca5335641efc8e36d76cd20b25101843a645b98d00005b2d666af46c45d927087db47cf7f81e4dc703622010efa9c29a9742148d5c9070348716e1bb210469d5f9fb22083df176f0c29f1a3d2310eb50e770ddcc3060101d2f43b6c2b884241076542abce5ff9345b0e8947f4c6e019c2510f9375e6d41e1000096e7fe4ff1c27e392708706f996719ba609c03622010f023d5a3b24726e0631b64b3840f82532104d570c03f2208ec011be8919883d62310c4e58af4ba43f3bcd904e16984f086d724100593f65e752e5cb7f473862bda05aa0a2510541ff1f077270000c5ea00d658bc7e9a27083fd26072eaa2a04d036220102f8f90c780d6a9c0c53da7ac57b6707e2104b072446f220823f39f9f425ad6e6231065af0527fda95b0dc5ae4aa515cdf32f2410537c3b35a3b13b08d08eeb28098f45cc25104bf4e564f75300009bc796706bc6574427080edb0eadbea94ac2
-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 5 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
@@ -427,7 +427,7 @@ DVLR VLR_Authenticate(IMSI-901700000010650:UTRAN-Iu-42:LU){VLR_SUB_AS_WAIT_RESP}
 - ...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
@@ -475,19 +475,19 @@ DVLR upd_hlr_vlr_fsm(IMSI-901700000010650:UTRAN-Iu-42:LU){UPD_HLR_VLR_S_INIT}: s
 - 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
@@ -501,12 +501,12 @@ DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:UTRAN-Iu-42:LU){LU_COMPL
 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
@@ -519,9 +519,9 @@ DRLL Dispatching 04.08 message GSM48_MT_MM_TMSI_REALL_COMPL (0x5:0x1b)
 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)
@@ -533,8 +533,8 @@ DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:LU){R
 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
@@ -549,25 +549,25 @@ DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:LU
 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
   llist_count(&net->ran_conns) == 0
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + standard_lu: now used by 2 (attached,standard_lu)
   vsub != NULL == 1
   strcmp(vsub->imsi, IMSI) == 0
   LAC == 23
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - standard_lu: now used by 1 (attached)
 ---
 - after a while, MNCC asks us to setup a call, causing Paging
 DMNCC receive message MNCC_SETUP_REQ
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + mncc_tx_to_cc: now used by 2 (attached,mncc_tx_to_cc)
 DCC (ti ff sub IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 callref 423) New transaction
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + CC: now used by 3 (attached,mncc_tx_to_cc,CC)
 DMM Subscriber IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 not paged yet, start paging.
   UTRAN-Iu sends out paging request to IMSI 901700000010650, TMSI 0x03020100, LAC 23
   strcmp(paging_expecting_imsi, imsi) == 0
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 4
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 3
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + Paging: now used by 4 (attached,mncc_tx_to_cc,CC,Paging)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - mncc_tx_to_cc: now used by 3 (attached,CC,Paging)
   paging_sent == 1
   paging_stopped == 0
 - MS replies with Paging Response, and VLR sends Auth Request
@@ -582,8 +582,8 @@ DVLR Process_Access_Request_VLR(IMSI-901700000010650:UTRAN-Iu-42:PAGING_RESP){PR
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:UTRAN-Iu-42:PAGING_RESP){PR_ARQ_S_INIT}: is child of RAN_conn(IMSI-901700000010650:UTRAN-Iu-42:PAGING_RESP)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:UTRAN-Iu-42:PAGING_RESP){PR_ARQ_S_INIT}: rev=R99 net=UTRAN Auth+Ciph
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:UTRAN-Iu-42:PAGING_RESP){PR_ARQ_S_INIT}: Received Event PR_ARQ_E_START
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 4
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 5
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + proc_arq_vlr_fn_init: now used by 4 (attached,CC,Paging,proc_arq_vlr_fn_init)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + conn: now used by 5 (attached,CC,Paging,proc_arq_vlr_fn_init,conn)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:PAGING_RESP){RAN_CONN_S_NEW}: Updated ID
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:PAGING_RESP){PR_ARQ_S_INIT}: proc_arq_vlr_fn_post_imsi()
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:PAGING_RESP){PR_ARQ_S_INIT}: state_chg to PR_ARQ_S_WAIT_AUTH
@@ -596,7 +596,7 @@ DVLR VLR_Authenticate(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu
 - ...rand=c187a53a5e6b9d573cac7c74451fd46d
 - ...autn=1843a645b98d00005b2d666af46c45d9
 - ...expecting res=7db47cf7f81e4dc7
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 4
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - proc_arq_vlr_fn_init: now used by 4 (attached,CC,Paging,conn)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:PAGING_RESP){RAN_CONN_S_NEW}: Received Event RAN_CONN_E_COMPLETE_LAYER_3
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:PAGING_RESP){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: )
@@ -650,7 +650,7 @@ DCC (ti 00 sub IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100) new state NULL
 DMSC msc_tx 2 bytes to IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 via UTRAN-Iu
 - DTAP --UTRAN-Iu--> MS: GSM48_MT_CC_SETUP: 0305
 - DTAP matches expected message
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 3
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - Paging: now used by 3 (attached,CC,conn)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:PAGING_RESP){RAN_CONN_S_AUTH_CIPH}: state_chg to RAN_CONN_S_ACCEPTED
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:PAGING_RESP){RAN_CONN_S_ACCEPTED}: ran_conn_fsm_has_active_transactions: connection still has active transaction: CC
   paging_stopped == 1
@@ -730,15 +730,15 @@ DCC Sending 'MNCC_REL_CNF' to MNCC.
   MS <--Call Release-- MSC: subscr=IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 callref=0x0
 DCC (ti 00 sub IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100) new state RELEASE_REQ -> NULL
 DCC (sub 42342) stopping pending guard timer
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - CC: now used by 2 (attached,conn)
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use - trans_cc == 1 (0x2: dtap)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:PAGING_RESP){RAN_CONN_S_COMMUNICATING}: Received Event RAN_CONN_E_COMMUNICATING
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use - dtap == 0 (0x0: )
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:PAGING_RESP){RAN_CONN_S_COMMUNICATING}: Received Event RAN_CONN_E_UNUSED
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:PAGING_RESP){RAN_CONN_S_COMMUNICATING}: 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
 - RNC sends Iu Release Complete
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use - release == 0 (0x0: )
@@ -749,7 +749,7 @@ DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x0302010
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:PAGING_RESP){PR_ARQ_S_DONE}: Removing from parent RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:PAGING_RESP)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:PAGING_RESP){PR_ARQ_S_DONE}: Deferring: will deallocate with RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:PAGING_RESP)
 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:PAGING_RESP){RAN_CONN_S_RELEASED}: Deallocated, including all deferred deallocations
   llist_count(&net->ran_conns) == 0
 DREF freeing VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100
@@ -773,12 +773,12 @@ DVLR vlr_lu_fsm(IMSI-901700000010650:UTRAN-Iu-42:LU){VLR_ULA_S_IDLE}: Allocated
 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
@@ -796,7 +796,7 @@ DMM RAN_conn(IMSI-901700000010650:UTRAN-Iu-42:LU){RAN_CONN_S_AUTH_CIPH}: Awaitin
 - from HLR, rx _SEND_AUTH_INFO_RESULT; VLR sends Auth Req to MS
 <-- GSUP rx OSMO_GSUP_MSGT_SEND_AUTH_INFO_RESULT: 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
 DVLR GSUP rx 511: 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
-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 5 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
@@ -805,7 +805,7 @@ DVLR VLR_Authenticate(IMSI-901700000010650:UTRAN-Iu-42:LU){VLR_SUB_AS_WAIT_RESP}
 - ...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
@@ -853,19 +853,19 @@ DVLR upd_hlr_vlr_fsm(IMSI-901700000010650:UTRAN-Iu-42:LU){UPD_HLR_VLR_S_INIT}: s
 - 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
@@ -879,12 +879,12 @@ DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:UTRAN-Iu-42:LU){LU_COMPL
 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
@@ -897,9 +897,9 @@ DRLL Dispatching 04.08 message GSM48_MT_MM_TMSI_REALL_COMPL (0x5:0x1b)
 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)
@@ -911,8 +911,8 @@ DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:LU){R
 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
@@ -927,25 +927,25 @@ DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:LU
 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
   llist_count(&net->ran_conns) == 0
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + standard_lu: now used by 2 (attached,standard_lu)
   vsub != NULL == 1
   strcmp(vsub->imsi, IMSI) == 0
   LAC == 23
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - standard_lu: now used by 1 (attached)
 ---
 - after a while, MNCC asks us to setup a call, causing Paging
 DMNCC receive message MNCC_SETUP_REQ
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + mncc_tx_to_cc: now used by 2 (attached,mncc_tx_to_cc)
 DCC (ti ff sub IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 callref 423) New transaction
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + CC: now used by 3 (attached,mncc_tx_to_cc,CC)
 DMM Subscriber IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 not paged yet, start paging.
   UTRAN-Iu sends out paging request to IMSI 901700000010650, TMSI 0x03020100, LAC 23
   strcmp(paging_expecting_imsi, imsi) == 0
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 4
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 3
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + Paging: now used by 4 (attached,mncc_tx_to_cc,CC,Paging)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - mncc_tx_to_cc: now used by 3 (attached,CC,Paging)
   paging_sent == 1
   paging_stopped == 0
 - MS replies with Paging Response, and VLR sends Auth Request
@@ -960,8 +960,8 @@ DVLR Process_Access_Request_VLR(IMSI-901700000010650:UTRAN-Iu-42:PAGING_RESP){PR
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:UTRAN-Iu-42:PAGING_RESP){PR_ARQ_S_INIT}: is child of RAN_conn(IMSI-901700000010650:UTRAN-Iu-42:PAGING_RESP)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:UTRAN-Iu-42:PAGING_RESP){PR_ARQ_S_INIT}: rev=R99 net=UTRAN Auth+Ciph
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:UTRAN-Iu-42:PAGING_RESP){PR_ARQ_S_INIT}: Received Event PR_ARQ_E_START
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 4
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 5
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + proc_arq_vlr_fn_init: now used by 4 (attached,CC,Paging,proc_arq_vlr_fn_init)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + conn: now used by 5 (attached,CC,Paging,proc_arq_vlr_fn_init,conn)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:PAGING_RESP){RAN_CONN_S_NEW}: Updated ID
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:PAGING_RESP){PR_ARQ_S_INIT}: proc_arq_vlr_fn_post_imsi()
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:PAGING_RESP){PR_ARQ_S_INIT}: state_chg to PR_ARQ_S_WAIT_AUTH
@@ -974,7 +974,7 @@ DVLR VLR_Authenticate(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu
 - ...rand=c187a53a5e6b9d573cac7c74451fd46d
 - ...autn=1843a645b98d00005b2d666af46c45d9
 - ...expecting res=7db47cf7f81e4dc7
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 4
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - proc_arq_vlr_fn_init: now used by 4 (attached,CC,Paging,conn)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:PAGING_RESP){RAN_CONN_S_NEW}: Received Event RAN_CONN_E_COMPLETE_LAYER_3
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:PAGING_RESP){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: )
@@ -1028,7 +1028,7 @@ DCC (ti 00 sub IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100) new state NULL
 DMSC msc_tx 2 bytes to IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 via UTRAN-Iu
 - DTAP --UTRAN-Iu--> MS: GSM48_MT_CC_SETUP: 0305
 - DTAP matches expected message
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 3
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - Paging: now used by 3 (attached,CC,conn)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:PAGING_RESP){RAN_CONN_S_AUTH_CIPH}: state_chg to RAN_CONN_S_ACCEPTED
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:PAGING_RESP){RAN_CONN_S_ACCEPTED}: ran_conn_fsm_has_active_transactions: connection still has active transaction: CC
   paging_stopped == 1
@@ -1062,8 +1062,8 @@ DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use - dtap == 1
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:PAGING_RESP){RAN_CONN_S_COMMUNICATING}: Received Event RAN_CONN_E_CN_CLOSE
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:PAGING_RESP){RAN_CONN_S_COMMUNICATING}: state_chg to RAN_CONN_S_RELEASING
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use + release == 2 (0x110: trans_cc,release)
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 4
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 3
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + vlr_subscr_cancel_attach_fsm: now used by 4 (attached,CC,conn,vlr_subscr_cancel_attach_fsm)
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - vlr_subscr_cancel_attach_fsm: now used by 3 (attached,CC,conn)
 DCC stopping pending timer T301
   MS <--Call Release-- MSC: subscr=IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 callref=0x423
 DMNCC receive message MNCC_REL_REQ
@@ -1080,7 +1080,7 @@ DCC Sending 'MNCC_REL_CNF' to MNCC.
 DCC stopping pending timer T308
 DCC (ti 00 sub IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100) new state RELEASE_REQ -> NULL
 DCC (sub 42342) stopping pending guard timer
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - CC: now used by 2 (attached,conn)
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use - trans_cc == 1 (0x100: release)
 - Iu Release --UTRAN-Iu--> MS
 - RNC sends Iu Release Complete
@@ -1092,7 +1092,7 @@ DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x0302010
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:PAGING_RESP){PR_ARQ_S_DONE}: Removing from parent RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:PAGING_RESP)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:PAGING_RESP){PR_ARQ_S_DONE}: Deferring: will deallocate with RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:PAGING_RESP)
 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:PAGING_RESP){RAN_CONN_S_RELEASED}: Deallocated, including all deferred deallocations
   llist_count(&net->ran_conns) == 0
 - Total time passed: 31.000069 s
@@ -1117,12 +1117,12 @@ DVLR vlr_lu_fsm(IMSI-901700000010650:UTRAN-Iu-42:LU){VLR_ULA_S_IDLE}: Allocated
 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
@@ -1140,7 +1140,7 @@ DMM RAN_conn(IMSI-901700000010650:UTRAN-Iu-42:LU){RAN_CONN_S_AUTH_CIPH}: Awaitin
 - from HLR, rx _SEND_AUTH_INFO_RESULT; VLR sends Auth Req to MS
 <-- GSUP rx OSMO_GSUP_MSGT_SEND_AUTH_INFO_RESULT: 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
 DVLR GSUP rx 511: 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
-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 5 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
@@ -1149,7 +1149,7 @@ DVLR VLR_Authenticate(IMSI-901700000010650:UTRAN-Iu-42:LU){VLR_SUB_AS_WAIT_RESP}
 - ...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
@@ -1197,19 +1197,19 @@ DVLR upd_hlr_vlr_fsm(IMSI-901700000010650:UTRAN-Iu-42:LU){UPD_HLR_VLR_S_INIT}: s
 - 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
@@ -1223,12 +1223,12 @@ DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:UTRAN-Iu-42:LU){LU_COMPL
 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
@@ -1241,9 +1241,9 @@ DRLL Dispatching 04.08 message GSM48_MT_MM_TMSI_REALL_COMPL (0x5:0x1b)
 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)
@@ -1255,8 +1255,8 @@ DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:LU){R
 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
@@ -1271,14 +1271,14 @@ DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:LU
 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
   llist_count(&net->ran_conns) == 0
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + standard_lu: now used by 2 (attached,standard_lu)
   vsub != NULL == 1
   strcmp(vsub->imsi, IMSI) == 0
   LAC == 23
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - standard_lu: now used by 1 (attached)
 ---
 - after a while, a new conn sends a CM Service Request. VLR responds with Auth Req, 2nd auth vector
   MSC <--UTRAN-Iu-- MS: GSM48_MT_MM_CM_SERV_REQ
@@ -1292,8 +1292,8 @@ DVLR Process_Access_Request_VLR(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}: 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
@@ -1306,7 +1306,7 @@ DVLR VLR_Authenticate(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu
 - ...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 - 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: )
@@ -1367,7 +1367,7 @@ DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use + dtap == 2
 DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
 DCC Unknown transaction ID 8, creating new trans.
 DCC (ti 08 sub IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 callref 80000002) New transaction
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + CC: now used by 3 (attached,conn,CC)
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use + trans_cc == 3 (0x1a: dtap,cm_service,trans_cc)
 DMM IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: rx msg GSM48_MT_CC_SETUP: received_cm_service_request changes to false
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use - cm_service == 2 (0x12: dtap,trans_cc)
@@ -1415,15 +1415,15 @@ DCC Sending 'MNCC_REL_CNF' to MNCC.
   MS <--Call Release-- MSC: subscr=IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 callref=0x0
 DCC (ti 08 sub IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100) new state RELEASE_REQ -> NULL
 DCC (sub 42342) stopping pending guard timer
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - CC: now used by 2 (attached,conn)
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use - trans_cc == 1 (0x2: dtap)
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_COMMUNICATING}: Received Event RAN_CONN_E_COMMUNICATING
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use - dtap == 0 (0x0: )
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_COMMUNICATING}: Received Event RAN_CONN_E_UNUSED
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_COMMUNICATING}: 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
 - RNC sends Iu Release Complete
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use - release == 0 (0x0: )
@@ -1434,7 +1434,7 @@ DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x0302010
 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
   llist_count(&net->ran_conns) == 0
 DREF freeing VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100
@@ -1458,12 +1458,12 @@ DVLR vlr_lu_fsm(IMSI-901700000010650:UTRAN-Iu-42:LU){VLR_ULA_S_IDLE}: Allocated
 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
@@ -1481,7 +1481,7 @@ DMM RAN_conn(IMSI-901700000010650:UTRAN-Iu-42:LU){RAN_CONN_S_AUTH_CIPH}: Awaitin
 - from HLR, rx _SEND_AUTH_INFO_RESULT; VLR sends Auth Req to MS
 <-- GSUP rx OSMO_GSUP_MSGT_SEND_AUTH_INFO_RESULT: 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
 DVLR GSUP rx 511: 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
-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 5 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
@@ -1490,7 +1490,7 @@ DVLR VLR_Authenticate(IMSI-901700000010650:UTRAN-Iu-42:LU){VLR_SUB_AS_WAIT_RESP}
 - ...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
@@ -1538,19 +1538,19 @@ DVLR upd_hlr_vlr_fsm(IMSI-901700000010650:UTRAN-Iu-42:LU){UPD_HLR_VLR_S_INIT}: s
 - 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
@@ -1564,12 +1564,12 @@ DVLR lu_compl_vlr_fsm(IMSI-901700000010650:MSISDN-42342:UTRAN-Iu-42:LU){LU_COMPL
 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
@@ -1582,9 +1582,9 @@ DRLL Dispatching 04.08 message GSM48_MT_MM_TMSI_REALL_COMPL (0x5:0x1b)
 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)
@@ -1596,8 +1596,8 @@ DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:LU){R
 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
@@ -1612,14 +1612,14 @@ DVLR vlr_lu_fsm(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:LU
 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
   llist_count(&net->ran_conns) == 0
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + standard_lu: now used by 2 (attached,standard_lu)
   vsub != NULL == 1
   strcmp(vsub->imsi, IMSI) == 0
   LAC == 23
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 1
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - standard_lu: now used by 1 (attached)
 ---
 - after a while, a new conn sends a CM Service Request. VLR responds with Auth Req, 2nd auth vector
   MSC <--UTRAN-Iu-- MS: GSM48_MT_MM_CM_SERV_REQ
@@ -1633,8 +1633,8 @@ DVLR Process_Access_Request_VLR(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}: 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
@@ -1647,7 +1647,7 @@ DVLR VLR_Authenticate(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu
 - ...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 - 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: )
@@ -1708,7 +1708,7 @@ DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use + dtap == 2
 DRLL Dispatching 04.08 message GSM48_MT_CC_SETUP (0x3:0x5)
 DCC Unknown transaction ID 8, creating new trans.
 DCC (ti 08 sub IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 callref 80000003) New transaction
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage increases to: 3
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + CC: now used by 3 (attached,conn,CC)
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use + trans_cc == 3 (0x1a: dtap,cm_service,trans_cc)
 DMM IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: rx msg GSM48_MT_CC_SETUP: received_cm_service_request changes to false
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use - cm_service == 2 (0x12: dtap,trans_cc)
@@ -1755,13 +1755,13 @@ DCC Sending 'MNCC_REL_CNF' to MNCC.
   MSC --> MNCC: callref 0x80000003: MNCC_REL_CNF
 DCC (ti 08 sub IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100) new state RELEASE_REQ -> NULL
 DCC (sub 42342) stopping pending guard timer
-DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 usage decreases to: 2
+DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 - CC: now used by 2 (attached,conn)
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use - trans_cc == 0 (0x0: )
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_COMMUNICATING}: Received Event RAN_CONN_E_UNUSED
 DMM RAN_conn(IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100:UTRAN-Iu-42:CM_SERVICE_REQ){RAN_CONN_S_COMMUNICATING}: 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
 - RNC sends Iu Release Complete
 DREF IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100: MSC conn use - release == 0 (0x0: )
@@ -1772,7 +1772,7 @@ DVLR Process_Access_Request_VLR(IMSI-901700000010650:MSISDN-42342:TMSI-0x0302010
 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
   llist_count(&net->ran_conns) == 0
 DREF freeing VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100