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[Help-glpk] [Fwd: Bound not being enforced]
From: |
Andrew Makhorin |
Subject: |
[Help-glpk] [Fwd: Bound not being enforced] |
Date: |
Tue, 14 May 2013 00:50:33 +0400 |
-------- Forwarded Message --------
From: michael hegedus <address@hidden>
To: address@hidden <address@hidden>
Subject: Bound not being enforced
Date: Mon, 13 May 2013 12:15:14 -0700
I have a MIP defined that is not solving correctly because there is a
bound defined that is not being enforced.
I validated the bound is defined correctly. The constraint has an upper
bound of 0. Here is the "row" information after inserting the
constraint:
Row: 11
Name: c2_2_1_B
Bound Type: 3
LB: -1.7976931348623157E308
UB: 0.0
But the solution generates with a row value of 42. Here is the
corresponding row output after the solution:
Row: 11
Name: c2_2_1_B
Val: 42.0
Clearly the bound is violating the UB of 0 defined above.
I would be very appreciative of any suggestions.
Best Regards,
Mike.
P.S. A couple of environmental notes if it is relevant. I am running
GLPK 4.47 on Windows using the Java API.
- [Help-glpk] [Fwd: Bound not being enforced],
Andrew Makhorin <=