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

[Uday Reddy]

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)
Warning: numerical instability (primal simplex, phase I)
   2996: obj =   1.092637382e+04  infeas =  5.260e+09 (0)
   3000: obj =   1.092644011e+04  infeas =  5.235e+09 (0)
Warning: numerical instability (primal simplex, phase I)
   3051: obj =   1.077725595e+04  infeas =  5.201e+09 (0)
Warning: numerical instability (primal simplex, phase I)
   3059: obj =   1.074805814e+04  infeas =  5.185e+09 (0)
Warning: numerical instability (primal simplex, phase I)
   3122: obj =   1.998434476e+03  infeas =  3.955e+05 (0)
Warning: numerical instability (primal simplex, phase I)
   3159: obj =   1.998431624e+03  infeas =  3.944e+05 (0)
Error: unable to factorize the basis matrix (1)
Sorry, basis recovery procedure not implemented yet
glp_intopt: cannot solve LP relaxation
Time used:   1.7 secs
Memory used: 10.8 Mb (11322915 bytes)
--------------------------------------------------------------

Any insights/workarounds will be appreciated.

mi.cplex.gz
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