Examples with Expr com.google.api.expr.v1alpha1.Expr used on opensource projects

Example 86 with Expr

use of com.google.api.expr.v1alpha1.Expr in project java-smt by sosy-lab.

the class CVC4FormulaCreator method makeBoundCopy.

/**
 * Makes a bound copy of a variable for use in quantifier. Note that all occurrences of the free
 * var have to be substituted by the bound once it exists.
 *
 * @param var Variable you want a bound copy of.
 * @return Bound Variable
 */
public Expr makeBoundCopy(Expr var) {
    Type type = var.getType();
    String name = getName(var);
    Expr boundCopy = exprManager.mkBoundVar(name, type);
    return boundCopy;
}

Example 87 with Expr

use of com.google.api.expr.v1alpha1.Expr in project java-smt by sosy-lab.

the class CVC4IntegerFormulaManager method modularCongruence.

@Override
protected Expr modularCongruence(Expr pNumber1, Expr pNumber2, BigInteger pModulo) {
    // ((_ divisible n) x)   <==>   (= x (* n (div x n)))
    if (BigInteger.ZERO.compareTo(pModulo) < 0) {
        Expr n = makeNumberImpl(pModulo);
        Expr x = subtract(pNumber1, pNumber2);
        return exprManager.mkExpr(Kind.EQUAL, x, exprManager.mkExpr(Kind.MULT, n, exprManager.mkExpr(Kind.INTS_DIVISION, x, n)));
    }
    return exprManager.mkConst(true);
}

Example 88 with Expr

use of com.google.api.expr.v1alpha1.Expr in project java-smt by sosy-lab.

the class CVC4Model method getAssignment.

private ValueAssignment getAssignment(Expr pKeyTerm) {
    List<Object> argumentInterpretation = new ArrayList<>();
    for (Expr param : pKeyTerm) {
        argumentInterpretation.add(evaluateImpl(param));
    }
    // extract UF name
    Expr name = pKeyTerm.hasOperator() ? pKeyTerm.getOperator() : pKeyTerm;
    String nameStr = name.toString();
    if (nameStr.startsWith("|") && nameStr.endsWith("|")) {
        nameStr = nameStr.substring(1, nameStr.length() - 1);
    }
    Expr valueTerm = getValue(pKeyTerm);
    Formula keyFormula = creator.encapsulateWithTypeOf(pKeyTerm);
    Formula valueFormula = creator.encapsulateWithTypeOf(valueTerm);
    BooleanFormula equation = creator.encapsulateBoolean(creator.getEnv().mkExpr(Kind.EQUAL, pKeyTerm, valueTerm));
    Object value = creator.convertValue(pKeyTerm, valueTerm);
    return new ValueAssignment(keyFormula, valueFormula, equation, nameStr, value, argumentInterpretation);
}

Example 89 with Expr

use of com.google.api.expr.v1alpha1.Expr in project java-smt by sosy-lab.

the class CVC4NativeAPITest method checkSimpleInequalityUnsat.

@Test
public void checkSimpleInequalityUnsat() {
    Expr one = exprMgr.mkConst(new Rational(1));
    Expr assertion = exprMgr.mkExpr(Kind.NOT, exprMgr.mkExpr(Kind.EQUAL, one, one));
    smtEngine.assertFormula(assertion);
    Result satCheck = smtEngine.checkSat();
    assertThat(satCheck.isSat()).isEqualTo(Sat.UNSAT);
}

Example 90 with Expr

use of com.google.api.expr.v1alpha1.Expr in project java-smt by sosy-lab.

the class CVC4NativeAPITest method checkSimpleLIASat.

@Test
public void checkSimpleLIASat() {
    // x + y = 4 AND x * y = 4
    Expr four = exprMgr.mkConst(new Rational(4));
    Expr varX = exprMgr.mkVar("x", exprMgr.integerType());
    Expr varY = exprMgr.mkVar("y", exprMgr.integerType());
    Expr assertion1 = exprMgr.mkExpr(Kind.EQUAL, exprMgr.mkExpr(Kind.MULT, varX, varY), four);
    Expr assertion2 = exprMgr.mkExpr(Kind.EQUAL, exprMgr.mkExpr(Kind.PLUS, varX, varY), four);
    smtEngine.assertFormula(assertion1);
    smtEngine.assertFormula(assertion2);
    Result satCheck = smtEngine.checkSat();
    assertThat(satCheck.isSat()).isEqualTo(Sat.SAT);
    assertThat(getInt(varX) + getInt(varY)).isEqualTo(4);
    assertThat(getInt(varX) * getInt(varY)).isEqualTo(4);
}