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Comment by @mgalati13 created at 2011-01-16 03:05:20
This issue is due to unbounded master-only columns. Given the current design, this can lead to large (infinity) coefficients in the reformulated constraint matrix - which leads to numerical issues.
This can be avoided with ColumnLB/UB option - but as seen in other tickets - this can lead to numerical issues later.
A better treatment of master-only columns is needed. I am working on a redesign which will take care of this. I will let you know when it is complete.
Issue created by migration from Trac.
Original creator: vejlin
Original creation time: 2011-01-13 15:17:55
DIP sometimes falsely concludes a problem is infeasible.
This can be reproduced using the MILPBlock example:
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