Hello everybody.
I am having an issue using the standalone glpsol solver: on some particular instances, the solver enters a never-ending elaboration (I let it run for 8 hours, when 20 seconds would be already a huge time for an instance of that size), without finding any solution. I am certain that the feasible solution exists because: 1. two other solvers (minos and Cbc) found it and 2. in case of non-existing solution, the solver should tell me that the instance is empty. Anyway, in the following you can find the model and the instance that gives the issue.