[Help-glpk] glpk fails with error: unable to factorize basis matrix (

With glpk 4.52 and with the attached input, I get the following failure/error: -- $ glpsol --lp mi.cplex Warning: numerical instability (primal simplex, phase I) 2979: obj = 1.092652474e+04 infeas = 5.265e+09 (0)

Re: [Help-glpk] glpk fails with error: unable to factorize basis matrix (

Probably a scaling issue. These numbers should scare the heck out of you: Scaling... A: min|aij| = 1.000e+00 max|aij| = 2.306e+18 ratio = 2.306e+18 GM: min|aij| = 1.213e-04 max|aij| = 8.246e+03 ratio = 6.800e+07 EQ: min|aij| = 1.480e-08 max|aij| = 1.000e+00 ratio = 6.755e+07