//
// Is x!=x arc-consistent?
//

import static choco.Choco.*;
import choco.cp.model.CPModel;
import choco.cp.solver.CPSolver;
import choco.kernel.model.Model;
import choco.kernel.solver.Solver;
import choco.kernel.model.variables.integer.IntegerVariable;
import choco.kernel.solver.ContradictionException;
import choco.kernel.model.constraints.Constraint;


public class Prop1 {

  public static void main(String[] args) throws ContradictionException {

    Model m = new CPModel();

    IntegerVariable x = makeIntVar("x",0,9);

    m.addConstraint(neq(x,x));

    Solver s = new CPSolver();
    s.read(m);
    s.propagate();
    System.out.println(s.getVar(x).pretty());
  }
}