Hi! I’m working on my small project and I’m a beginner in programming and AIMMS.
I tried to run the model that I have developed but it resulted into “Warning: After zero iterations CPLEX 22.1 concluded that an integer solution to MinimizeDailyCost does not exist.” I attach my model and data.
I’m not sure where to start rectify this problem. Appreciate if anyone can help.
Best answer by Marcel HuntingView original
I checked your model, and i have a few comments that may help you to find the infeasibility source.
@Hazirah. I think that the integer variable NTUarea causes a conflict. There seems to be no feasible solution in which NTUarea can have an integer value. The model enforces NTUarea to take a fractional value but that is not allowed if this variable is declared as ‘integer’.
If you change the range of NTUarea into ‘nonnegative’ then CPLEX is able to find a solution, with fractional values for NTUarea.