IntVar[] X = VF.enumeratedArray("X", 3, -1, 1, solver);
IntVar[] Y = VF.enumeratedArray("Y", 3, 1, 2, solver);
IntVar[] Z = VF.enumeratedArray("Z", 3, 0, 2, solver);
solver.post(ICF.lex_chain_less(X, Y, Z));
SMF.log(solver, true, false);
solver.findAllSolutions();
}
@Test(groups = "1s")
public void testlex_chain_less_eq() {
Solver solver = new Solver();