Yauhen Yakimenka

Hi Matthias, Thanks for the detailed answer. I will check further sensitivity analysis. Kind regards,/Y.

By the way, why is that you suggest to add the new unequality constraint? Since it was an optimal value, we have that for any feasible solution, $$c^T x \ge c^*$$ Should the new constraint be just ...

P.S. How do you type mutliline formulas here? I can't figure it out and don't see any information on how to type Latex here... :)  

Hi, Matthias, That's very simple and elegant solution. Thanks! Regards,/Y.  

I will try my luck with callbacks :) Thanks!

Yep, this seems to be exactly what I need. Thanks, Eli! /Y.

I have a (complete) solution which (I believe) satisfies the constraints of my model - but its objective is far from optimal. After creating the variables of the model, I set the variables by calls...

Okay, I perhaps better post it as a separate question as it might be useful for other users too.

Thanks, Taner Cokyasar. It seems I might have also a mistaken initial feasible solution. I wonder if there is a way to check the solution I set as start. Ideally, is it possible to see which constr...

Just out of curiosity, has the problem been finally solved? (I encountered the same message and googling brought me here. However, I don't know if I have the same issue - it may be just mistakes on...