[Help-glpk] un reduced filed

[Kevin Hunter]

Hullo GLPK List,

I've created another egregiously bad LP file, that I was hoping GLPK 
could pare down better.  For the most, it does, removing (byte-wise) 
about 120 MiB from the LP file.  However, I'm still seeing some 
redundant or unusable terms.  I'd expect for it to remove terms like these:

  + 0 x[3]

For reference, here's how I created the GLPK version of the LP file:

$ glpsol --version | head -1
GLPSOL: GLPK LP/MIP Solver, v4.43

$ glpsol --lp large_file.lp --wlp smaller_file.lp

$ ll large_file.lp smaller_file.lp
-rw-r--r-- 1 kevin kevin 294M 2010-11-06 14:20 large_file.lp
-rw-r--r-- 1 kevin kevin 172M 2010-11-06 14:24 smaller_file.lp

Am I incorrect in thinking that no matter where it is, a term multiplied 
by 0 is effectively useless information?  It is perhaps of note that I 
only see any +0 terms in the objective function.

Thanks,

Kevin