@Override
public void propagate(int evtmask) throws ContradictionException {
if (!antecedent.isInstantiated()) {
if (!PropUtil.isKerSubsetEnv(result, consequent)
|| !PropUtil.isKerSubsetEnv(consequent, result)) {
antecedent.instantiateTo(0, this);
} else if (!PropUtil.isKerSubsetEnv(result, alternative)
|| !PropUtil.isKerSubsetEnv(alternative, result)) {
antecedent.instantiateTo(1, this);
} else {
ISetIterator iter = result.getUB().iterator();
while (iter.hasNext()) {
int i = iter.nextInt();
if (!consequent.getUB().contains(i) && !alternative.getUB().contains(i)) {
result.remove(i, this);
} else if (consequent.getLB().contains(i) && alternative.getLB().contains(i)) {
result.force(i, this);
}
}
}
}
if (antecedent.isInstantiated()) {
if (antecedent.getValue() == 1) {
PropUtil.envSubsetEnv(result, consequent, this);
PropUtil.envSubsetEnv(consequent, result, this);
PropUtil.kerSubsetKer(result, consequent, this);
PropUtil.kerSubsetKer(consequent, result, this);
} else {
PropUtil.envSubsetEnv(result, alternative, this);
PropUtil.envSubsetEnv(alternative, result, this);
PropUtil.kerSubsetKer(result, alternative, this);
PropUtil.kerSubsetKer(alternative, result, this);
}
}
}
@Test(groups = "1s", timeOut = 60000)
public void test17() {
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);
model.addClauses(new BoolVar[0], new BoolVar[] {b1, b2});
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));
}