[Bug-glpk] MIP problem, returning a solution that violates constraints

[rhavar]

I have been testing glpk against some other solvers I have been using, and have found a case where glpk is returning a solution that violates the constraints of the problem:

$ glpsol --version

GLPSOL: GLPK LP/MIP Solver, v4.64

Can be reproduced with:

$ glpsol --lp problem.lp -o out.txt

(I have attached the problem to this email.)

glpk is returning:

i_change_from_withdrawalLine_1765=1

o_withdrawalLine_1894=1

(the rest being 0)

However this actually violates the constraints of the problem. The correct answer is:

o_withdrawalLine_858=1

i_change_from_withdrawalLine_849=1

change_amount=98293200

problem.lp
Description: Binary data