We have seen this form of error message only when modeling is being done with Pyomo rather than AMPL. Specifically, the message beginning ERROR: Solver (asl) returned ... occurs when Pyomo calls a solver that has an asl (AMPL-solver library) interface.
This particular return code (-11) is seen with various solvers. According to a comment at https://stackoverflow.com/questions/44229593/what-does-status-code-11-from-the-pyomo-couenne-solver-mean, it indicates a crash — specifically, a segmentation fault. But it does not give any indication of the reason for the crash.
Can you provide the following information, which may be useful in providing some help with the asl cplex solver?
-
Execute the command “
cplex-v” from an operating-system prompt, and show all of the output that results. -
Given any details you have about where you where/how you downloaded the
cplexexecutable that you are using.