[Bug-glpk] --nopresol does not stop presolver

[xypron]

Hello Andrew

C:\>glpsol.exe --dfs --nopresol -m s.mod

gave the following output

GLPSOL: GLPK LP/MIP Solver 4.39
Reading model section from s.mod...
132 lines were read
Generating start...
Generating end...
Generating onemove...
Generating delta...
Model has been successfully generated
ipp_basic_tech:  66 row(s) and 66 column(s) removed
ipp_reduce_bnds: 1 pass(es) made, 0 bound(s) reduced
ipp_basic_tech:  0 row(s) and 0 column(s) removed
ipp_reduce_coef: 1 pass(es) made, 0 coefficient(s) reduced
glp_intopt: presolved MIP has 1054 rows, 3346 columns, 11404 non-zeros
glp_intopt: 2356 integer columns, all of which are binary
Scaling...

The output was just the same if --presol is specified.

I would have expected no column to be removed with --nopresol.

Best regards

Xypron
-- 
View this message in context: 
http://www.nabble.com/--nopresol-does-not-stop-presolver-tp25732404p25732404.html
Sent from the Gnu - GLPK - Bugs mailing list archive at Nabble.com.