Segfault happened at: 0x7fa1ca8619e0:	callq  *0x68(%rax)
PC (0x7fa1ca8619e0) ok
source "*0x68(%rax)" ok
destination "(%rsp)" (0x7fff49e6a1c0) ok
SP (0x7fff49e6a1c0) ok
Reason could not be automatically determined.