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[Bug-glpk] [Fwd: Model causes glpk to hang]


From: Andrew Makhorin
Subject: [Bug-glpk] [Fwd: Model causes glpk to hang]
Date: Mon, 18 May 2015 07:05:58 +0300

-------- Forwarded Message --------
From: Yori Zwols <address@hidden>
To: address@hidden
Subject: Model causes glpk to hang
Date: Sun, 17 May 2015 22:43:10 +0100

The following model causes glpk to hang at the preprocessing stage. To
reproduce this behavior, save this to a file, say, model.mod, and run:
glpsol --math model.mod


var x1 >= 0, integer;
var x2 >= 0, integer;


subject to c1: x1 - x2 >= 0.9;
subject to c2: x1 - x2 <= 0.8;


I have verified that this is still a bug in GLPK 4.55.

Yori





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