In any case, the quick answer is that you should be able to find your core file in /var/cache/abrt , where abrt stores it after being invoked.

What is core file in Linux?

System core files (Linux® and UNIX)

If a program terminates abnormally, a core file is created by the system to store a memory image of the terminated process. Errors such as memory address violations, illegal instructions, bus errors, and user-generated quit signals cause core files to be dumped.

Where is core dump file in Ubuntu?

In Ubuntu the core dumps are handled by Apport and can be located in /var/crash/ .