Java Code Examples for kodkod.instance.Instance#relations()

The following examples show how to use kodkod.instance.Instance#relations() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: Drivers.java From quetzal with Eclipse Public License 2.0

6 votes

public static TupleSet check(UniverseFactory uf,
		Pair<Formula, Pair<Formula, Formula>> answer,
		String relation)
		throws URISyntaxException {
	Instance rels = check(uf, answer);
	if (rels != null) {
		for(Relation r : rels.relations()) {
			if (r.toString().equals(relation)) {
				return rels.tuples(r);
			}
		}
		return null;
	} else {
		return null;
	}
}

Example 2

Source File: SkolemizationTest.java From org.alloytools.alloy with Apache License 2.0

4 votes

private final void assertSkolems(Bounds bounds, Instance inst, Set<String> skolems) {
    assertEquals(skolems.size(), inst.relations().size() - bounds.relations().size());
    for (Relation r : inst.relations()) {
        assertTrue(skolems.contains(r.name()) || bounds.relations().contains(r));
    }
}

Example 3

Source File: BugTests.java From org.alloytools.alloy with Apache License 2.0

4 votes

public final void testFelix_03062008_2() {
    Relation x5 = Relation.unary("Role");
    Relation x6 = Relation.unary("Session");

    List<String> atomlist = Arrays.asList("Role$0", "Session$0", "Session$1");

    Universe universe = new Universe(atomlist);
    TupleFactory factory = universe.factory();
    Bounds bounds = new Bounds(universe);

    TupleSet x5_upper = factory.noneOf(1);
    x5_upper.add(factory.tuple("Role$0"));
    bounds.bound(x5, x5_upper);

    TupleSet x6_upper = factory.noneOf(1);
    x6_upper.add(factory.tuple("Session$0"));
    x6_upper.add(factory.tuple("Session$1"));
    bounds.bound(x6, x6_upper);

    Variable x11 = Variable.unary("x_a");
    Decls x10 = x11.oneOf(x6);
    Variable x15 = Variable.unary("x_b");
    Decls x14 = x15.oneOf(x5);
    Variable x17 = Variable.unary("x_c");
    Decls x16 = x17.oneOf(x5);
    Decls x13 = x14.and(x16);
    Expression x20 = x15.product(x17);
    Expression x19 = x11.product(x20);
    Formula x18 = x19.some();
    Formula x12 = x18.forSome(x13);
    Formula x9 = x12.forAll(x10);
    Formula x24 = x5.some();
    Formula x23 = x24.not();
    Formula x28 = x5.eq(x5);
    Formula x29 = x6.eq(x6);
    Formula x25 = x28.and(x29);
    Formula x22 = x23.and(x25);
    Formula x8 = x9.and(x22).and(x5.no()).and(x6.no());

    Solver solver = new Solver();
    solver.options().setSolver(SATFactory.DefaultSAT4J);
    solver.options().setBitwidth(2);
    // solver.options().setFlatten(false);
    solver.options().setIntEncoding(Options.IntEncoding.TWOSCOMPLEMENT);
    solver.options().setSymmetryBreaking(20);
    solver.options().setSkolemDepth(2);

    System.out.flush();

    Solution sol = solver.solve(x8, bounds);
    Instance inst = sol.instance();
    assertNotNull(inst);

    for (Relation rel : inst.relations()) {
        if (rel != x5 && rel != x6) {
            final TupleSet range = inst.tuples(x6).product(inst.tuples(x5));
            assertTrue(range.containsAll(inst.tuples(rel)));
        }
    }
}

Example 4

Source File: BugTests.java From org.alloytools.alloy with Apache License 2.0

4 votes

public final void testFelix_02222008() {
    List<String> atomlist = Arrays.asList("X1", "X2", "X3");

    Universe universe = new Universe(atomlist);
    TupleFactory factory = universe.factory();
    Bounds bounds = new Bounds(universe);

    Relation x = Relation.unary("X");
    TupleSet x_upper = factory.noneOf(1);
    x_upper.add(factory.tuple("X1"));
    x_upper.add(factory.tuple("X2"));
    x_upper.add(factory.tuple("X3"));
    bounds.bound(x, x_upper);

    Variable a = Variable.unary("a");
    Variable b = Variable.unary("b");
    Variable c = Variable.unary("c");
    Formula goal = x.lone().not().and(b.union(c).eq(a).forSome(c.oneOf(x)).forAll(b.oneOf(x)).forSome(a.setOf(x)));

    Solver solver = new Solver();
    solver.options().setSolver(SATFactory.DefaultSAT4J);
    solver.options().setBitwidth(4);
    solver.options().setIntEncoding(Options.IntEncoding.TWOSCOMPLEMENT);
    solver.options().setSymmetryBreaking(0);
    solver.options().setSkolemDepth(2);

    Iterator<Solution> itr = solver.solveAll(goal, bounds);
    int sols = 0;
    while (itr.hasNext()) {
        Solution sol = itr.next();
        Instance inst = sol.instance();
        if (inst == null)
            break;
        sols++;

        for (Relation rel : inst.relations()) {
            if (rel != x) {
                if (rel.arity() == 1) { // rel = a
                    assertEquals(inst.tuples(x), inst.tuples(rel));
                } else { // rel = c
                    final TupleSet dom = factory.noneOf(1);
                    for (Tuple t : inst.tuples(rel)) {
                        dom.add(factory.tuple(t.atom(0)));
                    }
                    assertEquals(inst.tuples(x), dom);
                }
            }
        }
    }
    assertEquals(3, sols);
}

Example 5

Source File: RegressionTests.java From kodkod with MIT License

4 votes

@Test
public final void testFelix_03062008_2() {
	Relation x5 = Relation.unary("Role");
	Relation x6 = Relation.unary("Session");

	List<String> atomlist = Arrays.asList("Role$0", "Session$0", "Session$1");

	Universe universe = new Universe(atomlist);
	TupleFactory factory = universe.factory();
	Bounds bounds = new Bounds(universe);

	TupleSet x5_upper = factory.noneOf(1);
	x5_upper.add(factory.tuple("Role$0"));
	bounds.bound(x5, x5_upper);

	TupleSet x6_upper = factory.noneOf(1);
	x6_upper.add(factory.tuple("Session$0"));
	x6_upper.add(factory.tuple("Session$1"));
	bounds.bound(x6, x6_upper);

	Variable x11=Variable.unary("x_a");
	Decls x10=x11.oneOf(x6);
	Variable x15=Variable.unary("x_b");
	Decls x14=x15.oneOf(x5);
	Variable x17=Variable.unary("x_c");
	Decls x16=x17.oneOf(x5);
	Decls x13=x14.and(x16);
	Expression x20=x15.product(x17);
	Expression x19=x11.product(x20);
	Formula x18=x19.some();
	Formula x12=x18.forSome(x13);
	Formula x9=x12.forAll(x10);
	Formula x24=x5.some();
	Formula x23=x24.not();
	Formula x28=x5.eq(x5);
	Formula x29=x6.eq(x6);
	Formula x25=x28.and(x29);
	Formula x22=x23.and(x25);
	Formula x8=x9.and(x22).and(x5.no()).and(x6.no());

	Solver solver = new Solver();
	solver.options().setSolver(SATFactory.DefaultSAT4J);
	solver.options().setBitwidth(2);
	solver.options().setIntEncoding(Options.IntEncoding.TWOSCOMPLEMENT);
	solver.options().setSymmetryBreaking(20);
	solver.options().setSkolemDepth(2);

	System.out.flush();

	Solution sol = solver.solve(x8, bounds);
	Instance inst = sol.instance();
	assertNotNull(inst);


	for(Relation rel : inst.relations()) { 
		if (rel!=x5 && rel!=x6) {
			final TupleSet range = inst.tuples(x6).product(inst.tuples(x5));
			assertTrue(range.containsAll(inst.tuples(rel)));
		}
	}
}

Example 6

Source File: RegressionTests.java From kodkod with MIT License

4 votes

@Test
public final void testFelix_02222008() {
	List<String> atomlist = Arrays.asList("X1", "X2", "X3");

	Universe universe = new Universe(atomlist);
	TupleFactory factory = universe.factory();
	Bounds bounds = new Bounds(universe);

	Relation x = Relation.unary("X");
	TupleSet x_upper = factory.noneOf(1);
	x_upper.add(factory.tuple("X1"));
	x_upper.add(factory.tuple("X2"));
	x_upper.add(factory.tuple("X3"));
	bounds.bound(x, x_upper);

	Variable a = Variable.unary("a");
	Variable b = Variable.unary("b");
	Variable c = Variable.unary("c");
	Formula goal = x.lone().not().and(b.union(c).eq(a).forSome(c.oneOf(x)).forAll(b.oneOf(x)).forSome(a.setOf(x)));

	Solver solver = new Solver();
	solver.options().setSolver(SATFactory.DefaultSAT4J);
	solver.options().setBitwidth(4);
	solver.options().setIntEncoding(Options.IntEncoding.TWOSCOMPLEMENT);
	solver.options().setSymmetryBreaking(0);
	solver.options().setSkolemDepth(2);

	Iterator<Solution> itr = solver.solveAll(goal, bounds);
	int sols = 0;
	while(itr.hasNext()) {
		Solution sol = itr.next();
		Instance inst = sol.instance();
		if (inst==null) break;
		sols++;

		for(Relation rel : inst.relations()) { 
			if (rel!=x) {
				if( rel.arity()==1) { // rel = a
					assertEquals(inst.tuples(x), inst.tuples(rel));
				} else { // rel = c
					final TupleSet dom = factory.noneOf(1);
					for(Tuple t : inst.tuples(rel)) { 
						dom.add(factory.tuple(t.atom(0)));
					}
					assertEquals(inst.tuples(x), dom);
				}
			}
		}
	}
	assertEquals(3, sols);
}

Example 7

Source File: SkolemizationTest.java From kodkod with MIT License

4 votes

private final void assertSkolems(Bounds bounds, Instance inst, Set<String> skolems) {
	assertEquals(skolems.size(), inst.relations().size() - bounds.relations().size());
	for(Relation r: inst.relations()) {
		assertTrue(skolems.contains(r.name()) || bounds.relations().contains(r));
	}
}