┌────────────────────────────────────────────────────────────────────┐
│ SageMath version 7.2, Release Date: 2016-05-15                     │
│ Type "notebook()" for the browser-based notebook interface.        │
│ Type "help()" for help.                                            │
└────────────────────────────────────────────────────────────────────┘
]0;IPython: home/peter------------------------------------------------------------------------
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/usr/lib/libc.so.6(__libc_start_main+0xf1)[0x7f7073e0f741]
python2(_start+0x29)[0x55e9bbf3c819]
------------------------------------------------------------------------
Attaching gdb to process id 5979.

Saved trace to /home/peter/.sage/crash_logs/crash_WoXoR9.log
------------------------------------------------------------------------
Unhandled SIGILL: An illegal instruction occurred.
This probably occurred because a *compiled* module has a bug
in it and is not properly wrapped with sig_on(), sig_off().
Python will now terminate.
------------------------------------------------------------------------