.
Thread 44 (LWP 16838):
#0  0x00007f7c7f6c0e4d in ?? ()
No symbol table info available.
#1  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 43 (LWP 18829):
#0  0x00007f7c7f1bf7ce in ?? ()
No symbol table info available.
#1  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 42 (LWP 16847):
#0  0x00007f7c7f1bf414 in ?? ()
No symbol table info available.
#1  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 41 (LWP 18830):
#0  0x00007f7c7f1bf7ce in ?? ()
No symbol table info available.
#1  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 40 (LWP 3401):
#0  0x00007f7c7f1bf414 in ?? ()
No symbol table info available.
#1  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 39 (LWP 16846):
#0  0x00007f7c7f1bf414 in ?? ()
No symbol table info available.
#1  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 38 (LWP 3372):
#0  0x00007f7c7f1bf7ce in ?? ()
No symbol table info available.
#1  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 37 (LWP 18823):
#0  0x00007f7c7f1bf7ce in ?? ()
No symbol table info available.
#1  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 36 (LWP 3391):
#0  0x00007f7c7f6c274d in ?? ()
No symbol table info available.
#1  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 35 (LWP 3377):
#0  0x00007f7c7f1bf414 in ?? ()
No symbol table info available.
#1  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 34 (LWP 3362):
#0  0x00007f7c7f1bc66b in ?? ()
No symbol table info available.
Cannot access memory at address 0x7fff8988cb80