ImpreciseSingle3Test.java

/**
 * Copyright (C) 2019 Linghui Luo
 *
 * <p>This library is free software: you can redistribute it and/or modify it under the terms of the
 * GNU Lesser General Public License as published by the Free Software Foundation, either version
 * 2.1 of the License, or (at your option) any later version.
 *
 * <p>This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 *
 * <p>You should have received a copy of the GNU Lesser General Public License along with this
 * program. If not, see <http://www.gnu.org/licenses/>.
 */
package constraintBenchTestSuite;

import com.microsoft.z3.BoolExpr;
import cova.core.SMTSolverZ3;
import cova.data.ConstraintZ3;
import cova.data.Operator;
import org.junit.Assert;
import org.junit.Test;
import soot.RefType;
import utils.ConstraintBenchTestFramework;

/** */
public class ImpreciseSingle3Test extends ConstraintBenchTestFramework {

  public ImpreciseSingle3Test() {
    targetTestClassName = "constraintBench.test.imprecise.ImpreciseSingle3";
  }

  @Test
  public void test() {
    StringBuilder sb = new StringBuilder("im(");
    sb.append(FA);
    sb.append(")_0");
    String imFA = sb.toString();
    // FA = null
    BoolExpr expected1 =
        SMTSolverZ3.getInstance()
            .makeNonTerminalExpr(
                FA, false, "null", false, RefType.v("java.lang.String"), Operator.EQ);
    // !(FA = null)
    BoolExpr negation1 = SMTSolverZ3.getInstance().negate(expected1, false);
    BoolExpr actual = ((ConstraintZ3) results.get(13)).getExpr();
    boolean equivalent = SMTSolverZ3.getInstance().prove(negation1, actual);
    Assert.assertTrue(equivalent);
    // im(FA)_0
    BoolExpr termFA = SMTSolverZ3.getInstance().makeBoolTerm(imFA, false);
    BoolExpr negatedFA = SMTSolverZ3.getInstance().makeBoolTerm(imFA, true);
    // !(FA=null) ^ im(FA)_0
    BoolExpr expected2 = SMTSolverZ3.getInstance().solve(negation1, termFA, Operator.AND, false);
    actual = ((ConstraintZ3) results.get(14)).getExpr();
    equivalent = SMTSolverZ3.getInstance().prove(expected2, actual);
    Assert.assertTrue(equivalent);
    // !(FA=null) ^ !im(FA)_0
    BoolExpr expected3 = SMTSolverZ3.getInstance().solve(negation1, negatedFA, Operator.AND, false);
    actual = ((ConstraintZ3) results.get(16)).getExpr();
    equivalent = SMTSolverZ3.getInstance().prove(expected3, actual);
    Assert.assertTrue(equivalent);
    // (FA=null) V im(FA)_0
    BoolExpr expected4 = SMTSolverZ3.getInstance().solve(expected1, termFA, Operator.OR, false);
    actual = ((ConstraintZ3) results.get(19)).getExpr();
    equivalent = SMTSolverZ3.getInstance().prove(expected4, actual);
    Assert.assertTrue(equivalent);
  }
}