Model termination conditions and actions

The following termination conditions can occur

Value of Modelstat        indicates integer Model Solution Status

  8                Integer solution found

  9                Solver terminated early with a non-integer solution found(only in MIPs)

 10                No feasible integer solution could be found

When a number 9 occurs one may need to consider whether the gap is satisfactory or whether the model has to be run for a longer time.  When 10 occurs there truly may be no feasible MIP solution and this can be hard to diagnose.  In such cases one should certainly make sure that the RMIP has a feasible solution, then try to fix in an integer solution that should be feasible and find out why not.