`CPLEX Error 1001: Out of memory`
Now that's something I hate to see. Especially if you are just trying to solve the "small" problems in you target instance set.
Of course there are many reasons for this to happen. You can try to get some help/inspiration from:
- Asking or searching (for lost souls with similar problem) in the CPLEX forum.
- Following the advice of this technote from the IBM Support site.