void BNC::configureCPLEX(){
op1=op2=0;
//disable output
//cplex->setOut(env->getNullStream());
//define a time limit execution
cplex->setParam( IloCplex::TiLim, time_limit );
//disable presolve
cplex->setParam( IloCplex::PreInd, false );
//assure linear mappings between the presolved and original models
cplex->setParam( IloCplex::PreLinear, 0 );
//Turn on traditional search for use with control callback
cplex->setParam( IloCplex::MIPSearch, IloCplex::Traditional);
//Decides how often to apply the periodic heuristic. Setting the value to -1 turns off the periodic heuristic
cplex->setParam( IloCplex::HeurFreq, 0 );
//CPX_PARAM_MIPCBREDLP equivalent is not availible in c++ api
//cpx_ret = CPXsetintparam (env, CPX_PARAM_MIPCBREDLP, CPX_OFF);
/* impressao para conferencia */
if (primal_heuristic) {
//cout << "*** Primal Heuristic is going to be used." << endl;
cplex->use(Rounddown(*env, *variables, graph, adj));
}
cplex->setParam( IloCplex::FracCuts, -1 );
//disable cplex cutting separation
cplex->setParam( IloCplex::CutsFactor, 1.0);//conferir valor
//Decides whether or not Gomory fractional cuts should be generated for the problem: -1 disables cuts
cplex->setParam( IloCplex::FracCuts, -1 );
//Controls whether CPLEX applies a local branching heuristic to try to improve new incumbents found during a MIP search
cplex->setParam( IloCplex::LBHeur, false );
//Set the upper limit on the number of cutting plane passes CPLEX performs when solving the root node of a MIP model
printf("N cortes %d\n", n_cortes);
printf("MaxDeep %d\n", max_deep);
//status = CPXsetintparam (env, CPX_PARAM_DATACHECK, CPX_ON);
//actives the node callback MySelect
cplex->use( MySelect( *env, ¤t_deep ) );
}
int
main (int argc, char **argv)
{
IloEnv env;
try {
IloModel model(env);
IloCplex cplex(env);
if ( argc != 2 ) {
usage (argv[0]);
throw(-1);
}
IloObjective obj;
IloNumVarArray var(env);
IloRangeArray rng(env);
cplex.importModel(model, argv[1], obj, var, rng);
cplex.use(Rounddown(env, var));
cplex.extract(model);
// Check model is all binary except for objective constant variable
if ( cplex.getNbinVars() < cplex.getNcols() - 1 ) {
cerr << "Problem contains non-binary variables, exiting." << endl;
throw (-1);
}
cplex.setParam(IloCplex::Param::MIP::Strategy::Search,
IloCplex::Traditional);
cplex.solve();
IloNumArray vals(env);
cplex.getValues(vals, var);
env.out() << "Solution status = " << cplex.getStatus() << endl;
env.out() << "Solution value = " << cplex.getObjValue() << endl;
env.out() << "Values = " << vals << endl;
}
catch (IloException& e) {
cerr << "Concert exception caught: " << e << endl;
}
catch (...) {
cerr << "Unknown exception caught" << endl;
}
env.end();
return 0;
} // END main
