@Test
public void testContradiction() throws SolverException, InterruptedException {
// forall x . x = x+1 is UNSAT
BooleanFormula f = qfm.forall(_x, ifm.equal(_x, ifm.add(_x, ifm.makeNumber(1))));
assertThat(solver.isUnsat(f)).isTrue();
BooleanFormula g = qfm.exists(_x, ifm.equal(_x, ifm.add(_x, ifm.makeNumber(1))));
assertThat(solver.isUnsat(g)).isTrue();
}
@Test
public void testSimple() throws SolverException, InterruptedException {
// forall x . x+2 = x+1+1 is SAT
BooleanFormula f =
qfm.forall(
_x,
ifm.equal(
ifm.add(_x, ifm.makeNumber(2)),
ifm.add(ifm.add(_x, ifm.makeNumber(1)), ifm.makeNumber(1))));
assertThat(solver.isUnsat(f)).isFalse();
}