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

Example 31 with Expr

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

the class CVC4NativeAPITest method checkBvInvalidWidthAssertion.

@Test
public void checkBvInvalidWidthAssertion() {
    Expr bvOne = exprMgr.mkConst(new BitVector(0, 1));
    Expr assertion = exprMgr.mkExpr(Kind.EQUAL, bvOne, bvOne);
    Exception e = assertThrows(edu.stanford.CVC4.Exception.class, () -> smtEngine.assertFormula(assertion));
    assertThat(e.toString()).contains("constant of size 0");
}

Example 32 with Expr

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

the class CVC4NativeAPITest method checkSimpleFPUnsat.

@Test
public void checkSimpleFPUnsat() {
    // x * y = 1/4 AND x > 0 AND y < 0
    RoundingMode rm = RoundingMode.roundNearestTiesToAway;
    Expr rmExpr = exprMgr.mkConst(rm);
    Expr oneFourth = exprMgr.mkConst(new FloatingPoint(new FloatingPointSize(8, 24), rm, new Rational(1, 4)));
    Expr zero = exprMgr.mkConst(new FloatingPoint(new FloatingPointSize(8, 24), RoundingMode.roundNearestTiesToAway, new Rational(0)));
    Expr varX = exprMgr.mkVar("x", exprMgr.mkFloatingPointType(8, 24));
    Expr varY = exprMgr.mkVar("y", exprMgr.mkFloatingPointType(8, 24));
    Expr assertion1 = exprMgr.mkExpr(Kind.FLOATINGPOINT_EQ, exprMgr.mkExpr(Kind.FLOATINGPOINT_MULT, rmExpr, varX, varY), oneFourth);
    Expr assertion2 = exprMgr.mkExpr(Kind.FLOATINGPOINT_GT, varX, zero);
    Expr assertion3 = exprMgr.mkExpr(Kind.FLOATINGPOINT_LT, varY, zero);
    smtEngine.assertFormula(assertion1);
    smtEngine.assertFormula(assertion2);
    smtEngine.assertFormula(assertion3);
    Result satCheck = smtEngine.checkSat();
    assertThat(satCheck.isSat()).isEqualTo(Sat.UNSAT);
}

Example 33 with Expr

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

the class CVC4NativeAPITest method checkSimpleBvEqualitySat.

@Test
public void checkSimpleBvEqualitySat() {
    // 1 + 0 = 1 with bitvectors
    Expr bvOne = exprMgr.mkConst(new BitVector(16, 1));
    Expr bvZero = exprMgr.mkConst(new BitVector(16, 0));
    Expr assertion = exprMgr.mkExpr(Kind.EQUAL, exprMgr.mkExpr(Kind.BITVECTOR_PLUS, bvZero, bvOne), bvOne);
    smtEngine.assertFormula(assertion);
    Result satCheck = smtEngine.checkSat();
    assertThat(satCheck.isSat()).isEqualTo(Sat.SAT);
}

Example 34 with Expr

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

the class CVC4NativeAPITest method checkBooleanUFDeclaration.

@Test
public void checkBooleanUFDeclaration() {
    Type boolType = exprMgr.booleanType();
    Type intType = exprMgr.integerType();
    // arg is bool, return is int
    Type ufType = exprMgr.mkFunctionType(boolType, intType);
    Expr uf = exprMgr.mkVar("fun_bi", ufType);
    Expr ufTrue = exprMgr.mkExpr(uf, exprMgr.mkConst(true));
    Expr ufFalse = exprMgr.mkExpr(uf, exprMgr.mkConst(false));
    Expr assumptions = exprMgr.mkExpr(Kind.NOT, exprMgr.mkExpr(Kind.EQUAL, ufTrue, ufFalse));
    smtEngine.assertFormula(assumptions);
    Result satCheck = smtEngine.checkSat();
    assertThat(satCheck.isSat()).isEqualTo(Sat.SAT);
}

Example 35 with Expr

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

the class CVC4NativeAPITest method checkSimpleBvEqualityUnsat.

@Test
public void checkSimpleBvEqualityUnsat() {
    // 0 + 1 = 2 UNSAT with bitvectors
    Expr bvZero = exprMgr.mkConst(new BitVector(16, 0));
    Expr bvOne = exprMgr.mkConst(new BitVector(16, 1));
    Expr bvTwo = exprMgr.mkConst(new BitVector(16, 2));
    Expr assertion = exprMgr.mkExpr(Kind.EQUAL, exprMgr.mkExpr(Kind.BITVECTOR_PLUS, bvZero, bvOne), bvTwo);
    smtEngine.assertFormula(assertion);
    Result satCheck = smtEngine.checkSat();
    assertThat(satCheck.isSat()).isEqualTo(Sat.UNSAT);
}