public void RemoveNoConstraintsBasedOnVars()
{
IConstraintManager CM = new ConstraintManager();
IExprBuilder builder = GetBuilder();
// Dummy Boogie variable
var bv8TypeIdent = new TypedIdent(Token.NoToken, "bv8", Microsoft.Boogie.Type.GetBvType(8));
var dummyVarBv = new GlobalVariable(Token.NoToken, bv8TypeIdent);
// dummyVar needs a programLocation, otherwise SymbolicVariable constructor raises an exception
var progLoc = new ProgramLocation(dummyVarBv);
dummyVarBv.SetMetadata <ProgramLocation>((int)Symbooglix.Annotation.AnnotationIndex.PROGRAM_LOCATION, progLoc);
var s0 = new SymbolicVariable("s0", dummyVarBv).Expr;
var s1 = new SymbolicVariable("s1", dummyVarBv).Expr;
var s2 = new SymbolicVariable("s2", dummyVarBv).Expr;
// Construct some constraints
Expr c0 = builder.Eq(builder.BVAND(s0, s1), builder.ConstantBV(0, 8));
Expr c1 = builder.Eq(s2, builder.ConstantBV(1, 8));
CM.AddConstraint(c0, progLoc);
CM.AddConstraint(c1, progLoc);
var mockSolver = new MockSolver();
var indepenceSolver = new Symbooglix.Solver.ConstraintIndependenceSolver(mockSolver);
Expr queryExpr = builder.Eq(builder.BVAND(s1, s2), builder.ConstantBV(0, 8));
indepenceSolver.ComputeSatisfiability(new Solver.Query(CM, new Constraint(queryExpr)));
// Check no constraints were removed
Assert.AreEqual(2, mockSolver.Constraints.Count);
Assert.AreSame(queryExpr, mockSolver.QueryExpr);
bool c0Found = false;
bool c1Found = false;
foreach (var constraint in mockSolver.Constraints)
{
if (c0 == constraint.Condition)
{
c0Found = true;
}
if (c1 == constraint.Condition)
{
c1Found = true;
}
}
Assert.IsTrue(c0Found);
Assert.IsTrue(c1Found);
}
public void RemoveOneConstraintBasedOnVarsAndFunctions()
{
IConstraintManager CM = new ConstraintManager();
var builder = GetBuilder();
// Dummy Boogie variable
var bv8Type = Microsoft.Boogie.Type.GetBvType(8);
var bv8TypeIdent = new TypedIdent(Token.NoToken, "bv8", bv8Type);
var dummyVarBv = new GlobalVariable(Token.NoToken, bv8TypeIdent);
// dummyVar needs a programLocation, otherwise SymbolicVariable constructor raises an exception
var progLoc = new ProgramLocation(dummyVarBv);
dummyVarBv.SetMetadata <ProgramLocation>((int)Symbooglix.Annotation.AnnotationIndex.PROGRAM_LOCATION, progLoc);
var s0 = new SymbolicVariable("s0", dummyVarBv).Expr;
var s1 = new SymbolicVariable("s1", dummyVarBv).Expr;
var s2 = new SymbolicVariable("s2", dummyVarBv).Expr;
// Construct some constraints
Expr c0 = builder.Eq(builder.BVAND(s0, s1), builder.ConstantBV(0, 8));
Expr c1 = builder.Eq(s2, builder.ConstantBV(1, 8));
var FCB = new FunctionCallBuilder();
var foobarFunc = FCB.CreateUninterpretedFunctionCall("foobar", bv8Type, new List <Microsoft.Boogie.Type>()
{
bv8Type
});
// foobar(0bv8) == 0bv8
Expr c2 = builder.Eq(builder.UFC(foobarFunc, builder.ConstantBV(0, 8)), builder.ConstantBV(0, 8));
CM.AddConstraint(c0, progLoc);
CM.AddConstraint(c1, progLoc);
CM.AddConstraint(c2, progLoc);
var mockSolver = new MockSolver();
var indepenceSolver = new Symbooglix.Solver.ConstraintIndependenceSolver(mockSolver);
// The query expression does not use the "foobar" function so we don't need to keep constraints on that function
Expr queryExpr = builder.Eq(builder.BVAND(s1, s2), builder.ConstantBV(0, 8));
indepenceSolver.ComputeSatisfiability(new Solver.Query(CM, new Constraint(queryExpr)));
// Check no constraints were removed
Assert.AreEqual(2, mockSolver.Constraints.Count);
Assert.AreSame(queryExpr, mockSolver.QueryExpr);
bool c0Found = false;
bool c1Found = false;
foreach (var constraint in mockSolver.Constraints)
{
if (c0 == constraint.Condition)
{
c0Found = true;
}
if (c1 == constraint.Condition)
{
c1Found = true;
}
}
Assert.IsTrue(c0Found);
Assert.IsTrue(c1Found);
}
