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Implementation of sub-problem aggregation makes the problem unfeasible

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  • Riley Clement
    Gurobi Staff Gurobi Staff

    Hi Nico,

    Just in case it is relevant: the default lower bounds of variables are 0 (and this default is not printed in LP or IIS).  The reason I highlight this is that it is simple to see why the IIS is infeasible if you are aware of this fact.

    As for the "<" in the ILP file, this is quite bizarre and I can't reproduce it.  The equality sign hasn't accidentally been deleted?  Rest assured the solver is not using a < constraint (because it can't).

    - Riley

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