[Bug-glpk] [Fwd: problems after providing a heuristic solution]

[Andrew Makhorin]

-------- Forwarded Message --------
From: Luka Marohnić <address@hidden>
To: address@hidden
Subject: problems after providing a heuristic solution
Date: Thu, 21 Jun 2018 21:33:06 +0200

Hello,


I'm using GLPK to solve vertex coloring problem in graphs. I managed to
get it working using the custom branching technique. However, when I
implemented providing heuristic solutions in response of GLP_IHEUR, the
function glp_ios_heur_sol does not complain but after some time, during
the branch-and-cut process, the program crashes with the following
message:

Assertion failed: 1 <= k && k <= m+n
Error detected in file glpapi12.c at line 1081


That happens soon after the heuristic solution is acknowledged.

Is a bug causing this?

I can provide more info if necessary.


Luka