@Test(groups = "1s", timeOut = 60000)
public void test14() {
Model model = new Model();
BoolVar a = model.boolVar("a");
BoolVar b = model.boolVar("b");
LogOp l = LogOp.or(a, b, a.not(), a.not());
ILogical ll = LogicTreeToolBox.toCNF(l, model);
Assert.assertEquals(ll.toString(), "cste -- 1 = 1");
}
@Test(groups = "1s", timeOut = 60000)
public void test11() {
Model model = new Model();
BoolVar a = model.boolVar("a");
BoolVar b = model.boolVar("b");
LogOp l = LogOp.or(LogOp.and(a, b.not()), LogOp.and(a.not(), b), LogOp.and(a.not(), b.not()));
ILogical ll = LogicTreeToolBox.toCNF(l, model);
Assert.assertEquals(ll.toString(), "(not(b) or not(a))");
}
@Test(groups = "1s", timeOut = 60000)
public void test8() {
Model model = new Model();
BoolVar a = model.boolVar("a");
BoolVar na = a.not();
BoolVar b = model.boolVar("b");
BoolVar nb = b.not();
BoolVar c = model.boolVar("c");
BoolVar d = model.boolVar("d");
LogOp root = LogOp.and(LogOp.or(a, b, na), LogOp.or(c, d), LogOp.or(b, nb));
ILogical l = LogicTreeToolBox.toCNF(root, model);
Assert.assertEquals(l.toString(), "(c or d)");
}
/**
* create a logical connection between ``b`` and ``tree``.
*
* @param b operand
* @param tree operand
* @return a logical operator
*/
public static LogOp reified(BoolVar b, ILogical tree) {
try {
BoolVar nb = b.not();
ILogical ntree = negate(tree);
return or(and(b, tree), and(nb, ntree));
} catch (CloneNotSupportedException e) {
e.printStackTrace();
}
return null;
}
@Test(groups = "1s", timeOut = 60000)
public void test16() {
Model model = new Model();
IntVar a = model.intVar("a", -1, 1, false);
BoolVar b1 = model.boolVar("b1");
BoolVar b2 = model.boolVar("b2");
model.arithm(a, "=", 0).reifyWith(b1);
model.arithm(a, ">", 0).reifyWith(b2);
LogOp l = LogOp.or(b1.not(), b2.not());
model.addClauses(l);
model.getMinisat().getPropSat().initialize();
try {
model.getSolver().propagate();
b1.instantiateTo(1, Cause.Null);
model.getSolver().propagate();
} catch (ContradictionException ex) {
Assert.fail();
}
Assert.assertTrue(b1.isInstantiatedTo(1));
Assert.assertTrue(b2.isInstantiatedTo(0));
Assert.assertTrue(a.isInstantiatedTo(0));
}
@Test(groups = "1s", timeOut = 60000)
public void test9() {
Model model = new Model();
BoolVar a = model.boolVar("a");
BoolVar na = a.not();
BoolVar b = model.boolVar("b");
BoolVar c = model.boolVar("c");
BoolVar d = model.boolVar("d");
LogOp root = LogOp.and(a, b, na, c, d);
ILogical l = LogicTreeToolBox.toCNF(root, model);
Assert.assertEquals(l.toString(), "cste -- 0 = 0");
}