.
Thread 1 (process 6049):
#0  0x00002ab45104d620 in strlen () from /lib/libc.so.6
#1  0x00002ab45101d7a7 in vfprintf () from /lib/libc.so.6
#2  0x00002ab45101e1a6 in ?? () from /lib/libc.so.6
#3  0x00002ab451019daf in vfprintf () from /lib/libc.so.6
#4  0x0000000000401f3c in ?? ()
#5  0x00000000004020b6 in ?? ()
#6  0x000000000040658a in ?? ()
#7  0x0000000000402a5f in ?? ()
#8  0x0000000000403513 in ?? ()
#9  0x00002ab450ff48e4 in __libc_start_main () from /lib/libc.so.6
#10 0x0000000000401cb9 in ?? ()
#11 0x00007fff59cef738 in ?? ()
#12 0x0000000000000000 in ?? ()