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[Bug-glpk] Assertion in ios_pcost_update
From: |
Chris Matrakidis |
Subject: |
[Bug-glpk] Assertion in ios_pcost_update |
Date: |
Tue, 23 May 2017 17:54:58 +0300 |
Andrew,
I managed to trigger the xassert(dx != 0.0) in ios_pcost_update (line
508 of glpios09.c). What I think happens is that the branching
variable has a value over 10000, so that tol_mip is smaller than the
product of tol_piv and the unscaled variable, so it is a candidate for
branching but doesn't change value afterwards. The attached patch
papers over the symptom, but I'm not sure this is the best way.
Best Regards,
Chris Matrakidis
pcost_update.patch
Description: Text Data
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