Examples with MiniSatStyleSolver org.logicng.solvers.sat.MiniSatStyleSolver used on opensource projects

Example 1 with MiniSatStyleSolver

use of org.logicng.solvers.sat.MiniSatStyleSolver in project LogicNG by logic-ng.

the class LinearSU method rebuildBMO.

/**
 * Rebuilds a SAT solver with the current MaxSAT formula
 * @param functions     the functions
 * @param rhs           the right hand side
 * @param currentWeight the current weight
 * @return the rebuilt solver
 */
protected MiniSatStyleSolver rebuildBMO(final LNGVector<LNGIntVector> functions, final LNGIntVector rhs, final int currentWeight) {
    assert functions.size() == rhs.size();
    final MiniSatStyleSolver s = this.rebuildSolver(currentWeight);
    this.objFunction.clear();
    this.coeffs.clear();
    for (int i = 0; i < nSoft(); i++) {
        if (this.softClauses.get(i).weight() == currentWeight) {
            this.objFunction.push(this.softClauses.get(i).relaxationVars().get(0));
            this.coeffs.push(this.softClauses.get(i).weight());
        }
    }
    for (int i = 0; i < functions.size(); i++) {
        this.encoder.encodeCardinality(s, functions.get(i), rhs.get(i));
    }
    return s;
}

Example 2 with MiniSatStyleSolver

use of org.logicng.solvers.sat.MiniSatStyleSolver in project LogicNG by logic-ng.

the class MSU3 method rebuildSolver.

protected MiniSatStyleSolver rebuildSolver() {
    final MiniSatStyleSolver s = newSATSolver();
    for (int i = 0; i < nVars(); i++) {
        newSATVariable(s);
    }
    for (int i = 0; i < nHard(); i++) {
        s.addClause(this.hardClauses.get(i).clause(), null);
    }
    LNGIntVector clause;
    for (int i = 0; i < nSoft(); i++) {
        clause = new LNGIntVector(this.softClauses.get(i).clause());
        for (int j = 0; j < this.softClauses.get(i).relaxationVars().size(); j++) {
            clause.push(this.softClauses.get(i).relaxationVars().get(j));
        }
        s.addClause(clause, null);
    }
    return s;
}

Example 3 with MiniSatStyleSolver

use of org.logicng.solvers.sat.MiniSatStyleSolver in project LogicNG by logic-ng.

the class WBO method rebuildWeightSolver.

protected MiniSatStyleSolver rebuildWeightSolver(final WeightStrategy strategy) {
    assert strategy == WeightStrategy.NORMAL || strategy == WeightStrategy.DIVERSIFY;
    final MiniSatStyleSolver s = newSATSolver();
    for (int i = 0; i < nVars(); i++) {
        newSATVariable(s);
    }
    for (int i = 0; i < nHard(); i++) {
        s.addClause(this.hardClauses.get(i).clause(), null);
    }
    if (this.symmetryStrategy) {
        this.symmetryBreaking();
    }
    LNGIntVector clause = new LNGIntVector();
    this.nbCurrentSoft = 0;
    for (int i = 0; i < nSoft(); i++) {
        if (this.softClauses.get(i).weight() >= this.currentWeight) {
            this.nbCurrentSoft++;
            clause.clear();
            clause = new LNGIntVector(this.softClauses.get(i).clause());
            for (int j = 0; j < this.softClauses.get(i).relaxationVars().size(); j++) {
                clause.push(this.softClauses.get(i).relaxationVars().get(j));
            }
            clause.push(this.softClauses.get(i).assumptionVar());
            s.addClause(clause, null);
        }
    }
    return s;
}

Example 4 with MiniSatStyleSolver

use of org.logicng.solvers.sat.MiniSatStyleSolver in project LogicNG by logic-ng.

the class LNGHeapTest method test.

@Test
public void test() {
    final MiniSatStyleSolver solver = new MiniCard();
    solver.newVar(true, true);
    solver.newVar(true, true);
    solver.newVar(true, true);
    final LNGHeap heap = new LNGHeap(solver);
    assertThat(heap.empty()).isTrue();
    heap.insert(1);
    heap.insert(2);
    heap.insert(0);
    assertThat(heap.get(0)).isEqualTo(1);
    assertThat(heap.toString()).isEqualTo("LNGHeap{[1, 2], [2, 0], [0, 1]}");
    assertThat(heap.size()).isEqualTo(3);
    heap.clear();
    assertThat(heap.empty()).isTrue();
}

Example 5 with MiniSatStyleSolver

use of org.logicng.solvers.sat.MiniSatStyleSolver in project LogicNG by logic-ng.

the class WBO method rebuildSolver.

MiniSatStyleSolver rebuildSolver() {
    assert this.weightStrategy == WeightStrategy.NONE;
    final MiniSatStyleSolver s = newSATSolver();
    for (int i = 0; i < nVars(); i++) {
        newSATVariable(s);
    }
    for (int i = 0; i < nHard(); i++) {
        s.addClause(this.hardClauses.get(i).clause(), null);
    }
    if (this.symmetryStrategy) {
        this.symmetryBreaking();
    }
    LNGIntVector clause;
    for (int i = 0; i < nSoft(); i++) {
        clause = new LNGIntVector(this.softClauses.get(i).clause());
        for (int j = 0; j < this.softClauses.get(i).relaxationVars().size(); j++) {
            clause.push(this.softClauses.get(i).relaxationVars().get(j));
        }
        clause.push(this.softClauses.get(i).assumptionVar());
        s.addClause(clause, null);
    }
    return s;
}