#0  0xf7fdc430 in __kernel_vsyscall ()
#1  0xf7877657 in raise () from /lib/libc.so.6
#2  0xf7878e93 in abort () from /lib/libc.so.6
#3  0xf78b7075 in __libc_message () from /lib/libc.so.6
#4  0xf78becb2 in _int_free () from /lib/libc.so.6
#5  0xf7aaf97f in operator delete(void*) () from /lib/libstdc++.so.6
#6  0x08110a48 in OpenOpcUa::UACoreServer::CMonitoredItemServer::~CMonitoredItemServer (this=0xf7440050, __in_chrg=<optimized out>)
    at OpenOpcUaCoreServer/source/MonitoredItemServer.cpp:167
#7  0x08167ec1 in OpenOpcUa::UACoreServer::CSubscriptionServer::DeleteMonitoredItems (this=0xf740d1a8) at OpenOpcUaCoreServer/source/SubscriptionServer.cpp:1187
#8  0x081679b6 in OpenOpcUa::UACoreServer::CSubscriptionServer::~CSubscriptionServer (this=0xf740d1a8, __in_chrg=<optimized out>)
    at OpenOpcUaCoreServer/source/SubscriptionServer.cpp:1089
#9  0x08167ddb in OpenOpcUa::UACoreServer::CSubscriptionServer::~CSubscriptionServer (this=0xf740d1a8, __in_chrg=<optimized out>)
    at OpenOpcUaCoreServer/source/SubscriptionServer.cpp:1164
#10 0x081548d4 in OpenOpcUa::UACoreServer::CSessionServer::RemoveSubscriptions (this=0xf7411940) at OpenOpcUaCoreServer/source/SessionServer.cpp:5400
#11 0x08146d75 in OpenOpcUa::UACoreServer::CSessionServer::~CSessionServer (this=0xf7411940, __in_chrg=<optimized out>)
    at OpenOpcUaCoreServer/source/SessionServer.cpp:450
#12 0x0812f276 in OpenOpcUa::UACoreServer::CServerApplication::RemoveSessionServer (this=0x8207008, pSession=0xf7411940)
    at OpenOpcUaCoreServer/source/ServerApplication.cpp:6637
#13 0x0812ae14 in OpenOpcUa::UACoreServer::CServerApplication::OnEndpointCallback (this=0x8207008, eEvent=eOpcUa_Endpoint_Event_TransportConnectionClosed, uStatus=0, uSecureChannelId=206925237,
    a_phRawRequestContext=0x0, pbsClientCertificate=0x0, pSecurityPolicy=0x0, uSecurityMode=OpcUa_MessageSecurityMode_Invalid, a_uRequestedLifetime=0)
    at OpenOpcUaCoreServer/source/ServerApplication.cpp:4332
#14 0x08160f93 in Server_EndpointCallback (a_hEndpoint=0x82b7eb0, a_pCallbackData=0x8207008, a_eEvent=eOpcUa_Endpoint_Event_TransportConnectionClosed, a_uStatus=0, a_uSecureChannelId=206925237,
    a_phRawRequestContext=0x0, a_pbsClientCertificate=0x0, a_pSecurityPolicy=0x0, a_uSecurityMode=0, a_uRequestedLifetime=0)
    at OpenOpcUaCoreServer/source/StackCallbacks.cpp:1640
#15 0xf7df8b6c in OpcUa_Endpoint_OnSecureChannelEvent (a_uSecureChannelId=206925237, a_eSecureChannelEvent=eOpcUa_SecureListener_SecureChannelLostTransportConnection, a_uStatus=0,
    a_pbsClientCertificate=0x0, a_sSecurityPolicy=0x0, a_uMessageSecurityModes=0, a_uRequestedLifetime=0, a_pCallbackData=0x82b7eb0)
    at OpenOpcUaStackV1/source/opcua_endpoint.c:530
#16 0xf7e1cd97 in OpcUa_SecureListener_OnNotify (a_pTransportListener=0x82acf40, a_pCallbackData=0x82b7328, a_eEvent=OpcUa_ListenerEvent_ChannelClosed, a_hTransportConnection=0x20001,
    a_ppTransportIstrm=0x0, a_uOperationStatus=0) at OpenOpcUaStackV1/source/opcua_securelistener.c:798
#17 0xf7e35400 in OpcUa_TcpListener_ProcessDisconnect (a_pListener=0x82acf40, a_pTcpConnection=0x82aed3c) at OpenOpcUaStackV1/source/opcua_tcplistener.c:1403
#18 0xf7e35a2a in OpcUa_TcpListener_ReadEventHandler (a_pListener=0x82acf40, a_pSocket=0x82b0a7c) at OpenOpcUaStackV1/source/opcua_tcplistener.c:1732
#19 0xf7e362f7 in OpcUa_TcpListener_EventCallback (a_pSocket=0x82b0a7c, a_uSocketEvent=1, a_pUserData=0x82acf40, a_uPortNumber=16664, a_bIsSSL=0 '\000')
    at OpenOpcUaStackV1/source/opcua_tcplistener.c:2145
#20 0xf7e176a3 in OpcUa_Socket_HandleEvent (a_pSocket=0x82b0a7c, a_uEvent=1) at OpenOpcUaStackV1/source/opcua_p_socket_internal.c:1365
#21 0xf7e19063 in OpcUa_P_Socket_HandleFdSet (a_pSocketManager=0x82b7b30, a_pSocketArray=0xf71a5188, a_uEvent=1)
    at OpenOpcUaStackV1/source/opcua_p_socket_internal.c:2502
#22 0xf7e18978 in OpcUa_P_SocketManager_ServeLoopInternal (a_pSocketManager=0x82b7b30, a_msecTimeout=1000, a_pSocket=0x0, a_uEvent=0, a_puEventOccured=0xf71a52a4)
    at OpenOpcUaStackV1/source/opcua_p_socket_internal.c:2211
#23 0xf7e141a2 in OpcUa_P_SocketManager_ServerLoopThread (a_pArgument=0x82b7b30) at OpenOpcUaStackV1/source/opcua_p_socket_interface.c:93
#24 0xf7e1954a in pthread_start (args=0x8398128) at OpenOpcUaStackV1/source/opcua_p_thread.c:105
#25 0xf7b58b5c in start_thread () from /lib/libpthread.so.0
#26 0xf7940b8e in clone () from /lib/libc.so.6