public void SonnetCbcTest2()
{
Console.WriteLine("SonnetCbcTest2 - Cbc set CbcStrategyDefault");
Model model = Model.New("MIP-124725.mps"); // added file to project, "Copy Always"
Solver solver = new Solver(model, typeof(OsiCbcSolverInterface));
model.ObjectiveSense = ObjectiveSense.Minimise;
OsiCbcSolverInterface osisolver = solver.OsiSolver as OsiCbcSolverInterface;
Assert.IsTrue(osisolver != null);
CbcModel cbcModel = osisolver.getModelPtr();
cbcModel.setStrategy(new CbcStrategyDefault(1, 5, 5));
//cbcModel.strategy().setupCutGenerators(cbcModel);
solver.AutoResetMIPSolve = true;
solver.Minimise();
string message = "Used cut generators: " + string.Join(", ", cbcModel.cutGenerators().Select(generator => generator.generator().GetType().Name));
Console.WriteLine(message);
Assert.IsTrue(Utils.EqualsDouble(model.Objective.Value, 124725));
solver.Solve(true);
Assert.IsTrue(Utils.EqualsDouble(model.Objective.Value, 104713.12807881772));
}
public void SonnetCbcTest1()
{
Console.WriteLine("SonnetCbcTest1 - Cbc test set CbcStrategyNull and addCutGenerator");
Model model = Model.New("MIP-124725.mps"); // added file to project, "Copy Always";
Solver solver = new Solver(model, typeof(OsiCbcSolverInterface));
OsiCbcSolverInterface osisolver = solver.OsiSolver as OsiCbcSolverInterface;
Assert.IsTrue(osisolver != null);
CbcModel cbcModel = osisolver.getModelPtr();
cbcModel.setStrategy(new CbcStrategyNull());
cbcModel.addCutGenerator(new CglProbing());
Assert.IsTrue(cbcModel.numberCutGenerators() == 1);
//cbcModel.cutGenerators();
solver.Minimise();
Assert.IsTrue(Utils.EqualsDouble(model.Objective.Value, 124725));
//Assert.IsTrue(Utils.EqualsDouble(model.Objective.Value, 104713.12807881772));
}
