Originally posted by: AbdelhalimHiassat

I am trying to solve MIP problem using callable library CPLEX 12.6. I get error 1217. When I call  CPXrefineconflict, it starts listing numbers in three columns, then it stops working (window freezes). 

Any idea?

It looks like something went wrong internally in CPLEX. The most likely culprit is numerics. Does the problem persist if you enable CPX_PARAM_NUMERICALEMPHASIS. If that does not resolve the issue can you post the offending model?

Originally posted by: AbdelhalimHiassat

hi Daniel,

I found an infeasibility in the constraints, and therefore there is no conflict left, and the problem no longer appears.

Would you still like to investigate the problem?

If it is easy to reproduce then I am indeed still interested to figure out what caused that freeze. So if you have an easy way to reproduce that, I would happily look into this.