[Dip] SubProblem Infeasibility

[Siddhartha Jain]

Hi,

As far as I can tell, the generateVarsFea method is used to generate the
columns from the subproblems. It calls the solveRelaxed method on the
subproblems to generate the columns. But what happens if one of the
subproblems is infeasible? There doesn't seem to be a check which breaks
the process of generating columns if a subproblem turns out to be
infeasible.

Thanks,
--Sid
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