# What do these messages after a crash indicate?

I was recently running a script I wrote to triangulate a polygon, and after a few hours sage crashed. I was left with the following messages:

```
/usr/local/bin/sage/local/bin/sage-sage: line 301: 20880 Killed sage-cleaner &>/dev/null
/usr/local/bin/sage/local/bin/sage-sage: line 301: 20881 Killed sage-ipython "$@" -i
```

What happened? What do these messages indicate?

It looks like a process number, saying that some process was killed (maybe because it took too much memory). I think we'll need more details though; can you post a minimal version of your script and the input that produces this error? A similar error was reported at http://ask.sagemath.org/question/931/sage-crashes-when-inverting-a-large-matrix ; does your script invert large matrices?