[Bug-glpk] glpk 4.39: Assertion failed: col->type == GLP_FX

[Stefan Vigerske]

Hi,

with the attached lp, I get an assert in glpnpp01.c at line 634:

GLPSOL: GLPK LP/MIP Solver 4.39
Reading problem data from `glpk_nppassertfail.mps'...
Problem: <none_lo
Objective: R0000000
7 rows, 26 columns, 38 non-zeros
75 records were read
Original LP has 7 rows, 26 columns, 38 non-zeros
Presolved LP has 5 rows, 6 columns, 12 non-zeros
Scaling...
 A: min|aij| =  1.000e+00  max|aij| =  1.000e+00  ratio =  1.000e+00
Problem data seem to be well scaled
Constructing initial basis...
Size of triangular part = 5
      0: obj =   0.000000000e+00  infeas =  9.000e+02 (0)
*     4: obj =   1.809000000e+02  infeas =  0.000e+00 (0)
*     5: obj =   1.784250000e+02  infeas =  0.000e+00 (0)
OPTIMAL SOLUTION FOUND
Assertion failed: col->type == GLP_FX
Error detected in file ../../glpk/src/glpnpp01.c at line 634


Stefan

glpk_nppassertfail.mps
Description: application/mps