[Fwd: LP Model solvable in other solvers, not in GLPK]

[Andrew Makhorin]

-------- Forwarded Message --------

Date: Sun, 20 Feb 2022 16:30:06 -0300

Subject: LP Model solvable in other solvers, not in GLPK

To: bug-glpk@gnu.org

From: Cristiano Arbex Valle <arbex@dcc.ufmg.br>

Dear GLPK team,

I'm using Ubuntu 20.04.

When I try to solve the attached LP file with

glpsol --cpxlp test.lp

... I get an infeasible model. However the model is feasible, and several other solvers (as CPLEX and Gurobi, for instance), are able to find a feasible/optimal solution for this very same problem. It seems like a numerical issue.

Could this be a bug in GLPK?

Thank you very much and best regards,

Cristiano Arbex Valle

test.lp
Description: Binary data