[Bug-glpk] [Fwd: simplex with exact arithmetic]

[Andrew Makhorin]

-------- Forwarded Message --------
From: Lisa Claus <address@hidden>
To: address@hidden
Subject: simplex with exact arithmetic
Date: Wed, 26 Aug 2015 21:32:32 +0200

Dear Sir or Madam,

I am writing my master's thesis and therefore I am using the GLPK with  
exact arithmetic for large problems with 995 rows and 558  
columns/variables. My problem has 372 variables which have to be  
between 0 or 1. I use the GLPK during my implemented Branch and Bound  
algorithm to solve the LP-relaxed subproblems. At some point I fixed  
about 30 variables to 0 or 1 and then the solver loops infinitely on  
that data set.

Do you know something about such an bug?

Best regards,

Lisa Claus