.
Thread 4 (Thread 3100):
#0  0x00007f695d3b8be3 in select () at ../sysdeps/unix/syscall-template.S:82
No locals.
#1  0x00007f695f30b6f3 in ?? () from /usr/lib/libQtCore.so.4
No symbol table info available.
#2  0x00007f695f23b6b5 in ?? () from /usr/lib/libQtCore.so.4
No symbol table info available.
#3  0x00007f695efabb14 in start_thread (arg=<value optimized out>)
    at pthread_create.c:300
        __res = <value optimized out>
        pd = 0x7f695036a710
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140090294052624, 
                -5460775335622733931, 140735539618496, 140090294052624, 0, 3, 
                5396945879877685141, 5396948661844971413}, 
              mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, 
            data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <value optimized out>
        robust = <value optimized out>
        freesize = <value optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#4  0x00007f695d3c005d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#5  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 3 (Thread 3093):
#0  pthread_cond_wait@@GLIBC_2.3.2 ()
    at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
No locals.
#1  0x00007f695f23c66b in QWaitCondition::wait(QMutex*, unsigned long) ()
   from /usr/lib/libQtCore.so.4
No symbol table info available.
#2  0x00007f695f23b754 in QThread::wait(unsigned long) ()
   from /usr/lib/libQtCore.so.4
No symbol table info available.
#3  0x00007f6953b0278f in ?? () from /usr/lib/libsopranoserver.so.1
No symbol table info available.
#4  0x00007f6953afa2be in Soprano::Server::ServerCore::~ServerCore() ()
   from /usr/lib/libsopranoserver.so.1
No symbol table info available.
#5  0x00007f6953d278ec in ?? () from /usr/lib/kde4/nepomukstorage.so
No symbol table info available.
#6  0x00007f695f33d4fc in QObjectPrivate::deleteChildren() ()
   from /usr/lib/libQtCore.so.4
No symbol table info available.
#7  0x00007f695f344584 in QObject::~QObject() () from /usr/lib/libQtCore.so.4
No symbol table info available.
#8  0x00007f6953d267a3 in ?? () from /usr/lib/kde4/nepomukstorage.so
No symbol table info available.
#9  0x00007f695f33d4fc in QObjectPrivate::deleteChildren() ()
   from /usr/lib/libQtCore.so.4
No symbol table info available.
#10 0x00007f695f344584 in QObject::~QObject() () from /usr/lib/libQtCore.so.4
No symbol table info available.
#11 0x000000000040420e in _start ()
No symbol table info available.
Current language:  auto
The current source language is "auto; currently asm".
.
Thread 2 (Thread 3533):
#0  0x00007f695d3b3ba3 in *__GI___poll (fds=<value optimized out>, 
    nfds=<value optimized out>, timeout=-1)
    at ../sysdeps/unix/sysv/linux/poll.c:87
        _a3 = -1
        _a1 = 11354336
        resultvar = <value optimized out>
        _a2 = 2
        oldtype = 0
        result = <value optimized out>
#1  0x00007f695c82b4fc in ?? () from /lib/libglib-2.0.so.0
No symbol table info available.
#2  0x00007f695c82b840 in g_main_context_iteration ()
   from /lib/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f695f358053 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
No symbol table info available.
#4  0x00007f695f32d3e2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
No symbol table info available.
#5  0x00007f695f32d7bc in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
No symbol table info available.
#6  0x00007f695f238c79 in QThread::exec() () from /usr/lib/libQtCore.so.4
No symbol table info available.
#7  0x00007f6953b0213b in ?? () from /usr/lib/libsopranoserver.so.1
No symbol table info available.
#8  0x00007f695f23b6b5 in ?? () from /usr/lib/libQtCore.so.4
No symbol table info available.
#9  0x00007f695efabb14 in start_thread (arg=<value optimized out>)
    at pthread_create.c:300
        __res = <value optimized out>
        pd = 0x7f6947fff710
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140090156250896, 
                -5460775335622733931, 140735539620944, 140090156250896, 0, 3, 
                5396968476237500309, 5396948661844971413}, 
              mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, 
            data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <value optimized out>
        robust = <value optimized out>
        freesize = <value optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#10 0x00007f695d3c005d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#11 0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (Thread 3532):
#0  0x00007f695f2367fc in QMutex::lock() () from /usr/lib/libQtCore.so.4
No symbol table info available.
#1  0x00007f69505d48b2 in ?? ()
   from /usr/lib/soprano/libsoprano_virtuosobackend.so
No symbol table info available.
#2  0x00007f695b4e7226 in ?? () from /usr/lib/libsoprano.so.4
No symbol table info available.
#3  0x00007f695f25793d in QHashData::free_helper(void (*)(QHashData::Node*))
    () from /usr/lib/libQtCore.so.4
No symbol table info available.
#4  0x00007f6953b02489 in ?? () from /usr/lib/libsopranoserver.so.1
No symbol table info available.
#5  0x00007f695f23b6b5 in ?? () from /usr/lib/libQtCore.so.4
No symbol table info available.
#6  0x00007f695efabb14 in start_thread (arg=<value optimized out>)
    at pthread_create.c:300
        __res = <value optimized out>
        pd = 0x7f694ca2d710
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140090234033936, 
                -5460775335622733931, 140735539620944, 140090234033936, 0, 3, 
                5396988586348122005, 5396948661844971413}, 
              mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, 
            data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <value optimized out>
        robust = <value optimized out>
        freesize = <value optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007f695d3c005d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#8  0x0000000000000000 in ?? ()
No symbol table info available.
Current language:  auto
The current source language is "auto; currently c".