[Bug-glpk] Re: GLPSOL, Version 4.9 (Windows XP Service Pack 2 Installation) - Bug

[Andrew Makhorin]

> I think that I may have found a bug in Version 4.9 of GLPSOL
> binary released from ftp://gnu.mirror.pacific.net.au/gnu/gnu/.
>  I downloaded this package approximately eight months ago.

> Attached you will find two files.

I solved your model with glpsol without any problems (see below).
Could you provide more information about the bug?

Please note that the most recent version of glpk is 4.20.
GLPK distribution can be ftp'ed from <ftp://ftp.gnu.org/gnu/glpk/> or
from some mirror ftp sites; see <http://www.gnu.org/order/ftp.html>.

Andrew Makhorin


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Model has been successfully generated
glp_simplex: original LP has 85 rows, 42 columns, 630 non-zeros
glp_simplex: presolved LP has 42 rows, 31 columns, 402 non-zeros
lpx_adv_basis: size of triangular part = 12
      0:   objval =   1.710000000e+02   infeas =   1.000000000e+00 (24)
     15:   objval =   1.710000000e+02   infeas =   3.511824346e-16 (20)
OPTIMAL SOLUTION FOUND
Integer optimization begins...
+    15: mip =     not found yet >=              -inf        (1; 0)
+    15: mip =   1.710000000e+02 >=   1.710000000e+02   0.0% (1; 0)
+    15: mip =   1.710000000e+02 >=     tree is empty   0.0% (0; 1)
INTEGER OPTIMAL SOLUTION FOUND
Time used:   0.1 secs
Memory used: 0.7 Mb (714693 bytes)