Examples with Formula kodkod.ast.Formula used on opensource projects

Example 81 with Formula

use of kodkod.ast.Formula in project org.alloytools.alloy by AlloyTools.

the class LAT258 method lowerBoundMeet.

/**
 * Returns the lower_bound_meet axiom.
 *
 * @return the lower_bound_meet axiom.
 */
public final Formula lowerBoundMeet() {
    final Variable c = Variable.unary("C");
    final Expression e0 = c.join(lessThan);
    final Formula f0 = meet.join(c).in(e0.product(e0));
    // all c: univ | meet.c in c.lessThan->c.lessThan
    return f0.forAll(c.oneOf(UNIV));
}

Example 82 with Formula

use of kodkod.ast.Formula in project org.alloytools.alloy by AlloyTools.

the class LAT258 method main.

/**
 * Usage: java examples.tptp.LAT258 [scope]
 */
public static void main(String[] args) {
    if (args.length < 1)
        usage();
    try {
        final int n = Integer.parseInt(args[0]);
        final LAT258 model = new LAT258();
        final Bounds b = model.bounds(n);
        final Solver solver = new Solver();
        solver.options().setSolver(SATFactory.MiniSat);
        final Formula f = model.checkGoalToBeProved();
        System.out.println(f);
        // System.out.println(b);
        final Solution s = solver.solve(f, b);
        System.out.println(s);
    } catch (NumberFormatException nfe) {
        usage();
    } catch (HigherOrderDeclException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (UnboundLeafException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

Example 83 with Formula

use of kodkod.ast.Formula in project org.alloytools.alloy by AlloyTools.

the class LAT258 method greatestLowerBoundMeet.

/*
     * fof(greatest_lower_bound_meet,axiom,( ! [A,B,C,D] : ( ( meet(A,B,C) &
     * less_than(D,A) & less_than(D,B) ) => less_than(D,C) ) )).
     */
/**
 * Returns the greatest_lower_bound_meet axiom.
 *
 * @return the greatest_lower_bound_meet axiom.
 */
public final Formula greatestLowerBoundMeet() {
    final Variable a = Variable.unary("A"), b = Variable.unary("B");
    final Expression e0 = b.join(a.join(meet));
    final Formula f0 = e0.some().implies(lessThan.join(a).intersection(lessThan.join(b)).in(lessThan.join(e0)));
    return f0.forAll(a.oneOf(UNIV).and(b.oneOf(UNIV)));
}

Example 84 with Formula

use of kodkod.ast.Formula in project org.alloytools.alloy by AlloyTools.

the class LAT258 method loLeDistr.

/**
 * Returns the lo_le_distr axiom.
 *
 * @return the lo_le_distr axiom.
 */
public final Formula loLeDistr() {
    final Variable a = Variable.unary("A"), b = Variable.unary("B"), c = Variable.unary("C");
    final Expression h = c.join(b.join(join));
    final Expression d = h.join(a.join(meet));
    final Expression e = b.join(a.join(meet));
    final Expression f = c.join(a.join(meet));
    final Expression g = f.join(e.join(join));
    final Formula f0 = d.product(g).in(lessThan);
    // (c.(a.meet)).((b.(a.meet)).join) in lessThan
    return f0.forAll(a.oneOf(UNIV).and(b.oneOf(UNIV)).and(c.oneOf(UNIV)));
}

Example 85 with Formula

use of kodkod.ast.Formula in project org.alloytools.alloy by AlloyTools.

the class CeilingsAndFloors method noSharing.

/**
 * Returns the noSharing constraint.
 *
 * @return all m, n: Man | !(m = n) => !(m.floor = n.floor || m.ceiling =
 *         n.ceiling)
 */
public Formula noSharing() {
    final Variable m = Variable.unary("m1"), n = Variable.unary("n1");
    // all m, n: Man | !(m = n) => !(m.floor = n.floor || m.ceiling =
    // n.ceiling)
    final Formula body = (m.join(floor).eq(n.join(floor))).or(m.join(ceiling).eq(n.join(ceiling)));
    return (m.eq(n).not().implies(body.not())).forAll(m.oneOf(Man).and(n.oneOf(Man)));
}