Examples with BitVecExpr org.batfish.z3.expr.BitVecExpr used on opensource projects

Example 1 with BitVecExpr

use of org.batfish.z3.expr.BitVecExpr in project batfish by batfish.

the class AbstractNodJob method getOriginateVrfConstraints.

/**
 * Try to find a model for each OriginateVrf. If an OriginateVrf does not have an entry in the
 * Map, then the query is unsat when originating from there.
 */
protected Map<OriginateVrf, Map<String, Long>> getOriginateVrfConstraints(Context ctx, SmtInput smtInput) {
    Solver solver = ctx.mkSolver();
    solver.add(smtInput._expr);
    int originateVrfBvSize = _originateVrfInstrumentation.getFieldBits();
    BitVecExpr originateVrfFieldConst = ctx.mkBVConst(OriginateVrfInstrumentation.ORIGINATE_VRF_FIELD_NAME, originateVrfBvSize);
    ImmutableMap.Builder<OriginateVrf, Map<String, Long>> models = ImmutableMap.builder();
    // keep refining until no new models
    while (true) {
        try {
            Map<String, Long> constraints = getSolution(solver, smtInput._variablesAsConsts);
            int originateVrfId = Math.toIntExact(constraints.get(OriginateVrfInstrumentation.ORIGINATE_VRF_FIELD_NAME));
            OriginateVrf originateVrf = _originateVrfInstrumentation.getOriginateVrfs().get(originateVrfId);
            models.put(originateVrf, constraints);
            // refine: different OriginateVrf
            solver.add(ctx.mkNot(ctx.mkEq(originateVrfFieldConst, ctx.mkBV(originateVrfId, originateVrfBvSize))));
        } catch (QueryUnsatException e) {
            break;
        }
    }
    return models.build();
}

Example 2 with BitVecExpr

use of org.batfish.z3.expr.BitVecExpr in project batfish by batfish.

the class BoolExprTransformerTest method testVisitEqExpr.

@Test
public void testVisitEqExpr() {
    IntExpr i1Batfish = newIntAtom();
    IntExpr i2Batfish = newIntAtom();
    BitVecExpr i1Z3 = toBitVecExpr(i1Batfish, _nodContext);
    BitVecExpr i2Z3 = toBitVecExpr(i2Batfish, _nodContext);
    assertThat(toBoolExpr(new EqExpr(i1Batfish, i2Batfish), _input, _nodContext), equalTo(_ctx.mkEq(i1Z3, i2Z3)));
}

Example 3 with BitVecExpr

use of org.batfish.z3.expr.BitVecExpr in project batfish by batfish.

the class ExprPrinter method visitBitVecExpr.

@Override
public void visitBitVecExpr(BitVecExpr bitVecExpr) {
    List<Expr> subExpressions = ImmutableList.of(new IdExpr("_"), new IdExpr("BitVec"), new IdExpr(Integer.toString(bitVecExpr.getSize())));
    printCollapsedComplexExpr(subExpressions);
}