Re: [Help-glpk] [Fwd: mip behavior]

[Oscar Gustafsson]

Hi Veit!

> > > +3044704: mip =   6.000000000e+00>=   5.644706378e+00   5.9% (39579;
> > 54703)
> > > My interpretation of this output (documentation?) is that glpk found an
> > integer solution
> > > with objective 6, and found a lower bound of 5.644... My question: why
> > does it keep
> > > going -- sometimes for a very long time? We know the objective is an
> > integer and greater
> > > than 5, and a solution with value 6 has already been found -- why
> > doesn't glpk terminate?
It seems like GLPK has not realized that you objective function is 
integer as it normally outputs the rounded lower bound as the right hand 
column*. Have your really declared all your variables as integers?

Regards

Oscar

* Which somehow I would like to have a switch for as seeing the 
fractional lower bound can sometimes be of interest.