[OS] CPLEX Error 1017: Not available for mixed-integer programs.

[Matthew Saltzman]

Ooh, that is ugly.

Could you file a ticket at projects.coin-or.org/Osi and post your patch
there so we don't lose it in the archives?

Thanks.


On Mon, 2008-02-18 at 07:53 -0800, Joe wrote:
> 
> Finally, i've checked in <cplex.h> header file :
> #define CPXERR_NOT_FOR_MIP            1017
> 
> For my purpose, I've made a quick and dirty fix for my OS/Osi sources.
> I'm not sure this would be usefull for anyone else. Please find this
> ugly patch for the trunk :
> 
> Index: /local/joe/20080218/OS/OS1.1/Osi/src/OsiCpx/
> OsiCpxSolverInterface.cpp
> ===================================================================
> --- /local/joe/20080218/OS/OS1.1/Osi/src/OsiCpx/
> OsiCpxSolverInterface.cpp	(revision 1188)
> +++ /local/joe/20080218/OS/OS1.1/Osi/src/OsiCpx/
> OsiCpxSolverInterface.cpp	(working copy)
> @@ -1237,6 +1237,7 @@
>    return colsol_;
>  }
>  //------------------------------------------------------------------
> +
>  const double * OsiCpxSolverInterface::getRowPrice() const
>  {
>    debugMessage("OsiCpxSolverInterface::getRowPrice()\n");
> @@ -1248,7 +1249,7 @@
>  	{
>  	  rowsol_ = new double[nrows];
>  	  int err = CPXgetpi( env_, getMutableLpPtr(), rowsol_, 0,
> nrows-1 );
> -	  if ( err == CPXERR_NO_SOLN )
> +	  if ( err == CPXERR_NO_SOLN || err == CPXERR_NOT_FOR_MIP )
>  	    CoinFillN( rowsol_, nrows, 0.0 );
>  	  else
>  	    checkCPXerror( err, "CPXgetpi", "getRowPrice" );
> @@ -1268,7 +1269,7 @@
>  	{
>  	  redcost_ = new double[ncols];
>  	  int err = CPXgetdj( env_, getMutableLpPtr(), redcost_, 0,
> ncols-1 );
> -	  if ( err == CPXERR_NO_SOLN )
> +	  if ( err == CPXERR_NO_SOLN || err == CPXERR_NOT_FOR_MIP )
>  	    CoinFillN( redcost_, ncols, 0.0 );
>  	  else
>  	    checkCPXerror( err, "CPXgetdj", "getReducedCost" );
> 
> > 
-- 
                Matthew Saltzman

Clemson University Mathematical Sciences
mjs AT clemson DOT edu
http://www.math.clemson.edu/~mjs

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