public void simple()
{
p = LoadProgramFrom(@"
const g:int;
axiom g > 0;
procedure main()
{
return;
}
", "test.bpl");
// Always return UNKNOWN so trying to prove the axiom fails so the initial state fails to be prepared
var solver = new Solver.SimpleSolver(new Solver.DummySolver(Solver.Result.UNKNOWN));
e = GetExecutor(p, new DFSStateScheduler(), solver);
// Global DDE must be disabled otherwise the axiom will be removed
e.UseGlobalDDE = false;
int stateTerminationCounter = 0;
e.StateTerminated += delegate(object sender, Executor.ExecutionStateEventArgs eventArgs)
{
++stateTerminationCounter;
Assert.IsInstanceOf <TerminatedAtUnsatisfiableAxiom>(eventArgs.State.TerminationType);
var terminationType = eventArgs.State.TerminationType as TerminatedAtUnsatisfiableAxiom;
Assert.IsTrue(terminationType.ExitLocation.IsAxiom);
};
bool hitException = false;
try
{
e.Run(GetMain(p));
}
catch (InitialStateTerminated)
{
hitException = true;
Assert.AreEqual(Executor.ExecutorTerminationType.INITIAL_STATE_TERMINATED, e.TerminationType);
}
Assert.IsTrue(hitException);
Assert.AreEqual(1, stateTerminationCounter);
}
public void branchFeasibilityTrivialQueryExpr(bool trueBranch, Solver.Result expectedTrueBranch, Solver.Result expectedFalseBranch)
{
var builder = GetBuilder();
var solver = new Solver.SimpleSolver(GetSolverImpl());
var xVar = GetVar("x");
var constraint0Expr = builder.Lt(xVar.Expr, builder.ConstantInt(0));
var constraint0 = new Constraint(constraint0Expr);
var cm = GetConstraintManager();
cm.AddConstraint(constraint0);
var result = solver.CheckBranchSatisfiability(cm, new Constraint(builder.ConstantBool(trueBranch)), builder);
Assert.AreEqual(expectedTrueBranch, result.TrueBranch);
Assert.AreEqual(expectedFalseBranch, result.FalseBranch);
}
public void branchFeasibilityNonTrivialOnlyFalseBranch()
{
var builder = GetBuilder();
var solver = new Solver.SimpleSolver(GetSolverImpl());
var xVar = GetVar("x");
var constraint0Expr = builder.Lt(xVar.Expr, builder.ConstantInt(0));
var constraint0 = new Constraint(constraint0Expr);
var cm = GetConstraintManager();
cm.AddConstraint(constraint0);
var queryExpr = builder.Gt(xVar.Expr, builder.ConstantInt(1));
var result = solver.CheckBranchSatisfiability(cm, new Constraint(queryExpr), builder);
Assert.AreEqual(Solver.Result.UNSAT, result.TrueBranch);
Assert.AreEqual(Solver.Result.SAT, result.FalseBranch);
}
public static Solver.ISolver BuildSolverChain(CmdLineOpts options)
{
Solver.ISolverImpl solverImpl = null;
// Try to guess the location of executable. This is just for convenience
if (options.pathToSolver.Length == 0 && options.solver != CmdLineOpts.Solver.DUMMY)
{
Console.WriteLine("Path to SMT solver not specified. Guessing location");
// Look in the directory of the currently running executable for other solvers
var pathToSolver = Path.Combine(Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().Location),
options.solver.ToString().ToLower());
if (File.Exists(pathToSolver))
{
Console.WriteLine("Found \"{0}\"", pathToSolver);
options.pathToSolver = pathToSolver;
}
else
{
// Try with ".exe" appended
pathToSolver = pathToSolver + ".exe";
if (File.Exists(pathToSolver))
{
Console.WriteLine("Found \"{0}\"", pathToSolver);
options.pathToSolver = pathToSolver;
}
else
{
Console.Error.WriteLine("Could not find \"{0}\" (also without .exe)", pathToSolver);
ExitWith(ExitCode.SOLVER_NOT_FOUND);
}
}
}
// HACK: THIS IS GROSS! REMOVE THIS ASAP AND FIND A CLEAN WAY OF DOING THIS!!!!!!!!!!!!
var logicToUse = options.ForceQFAUFBV ? SMTLIBQueryPrinter.Logic.QF_AUFBV : SMTLIBQueryPrinter.Logic.DO_NOT_SET;
switch (options.solver)
{
case CmdLineOpts.Solver.CVC4:
solverImpl = new Solver.CVC4SMTLIBSolver(options.UseNamedAttributes > 0,
options.pathToSolver,
options.PersistentSolver > 0,
options.emitTriggers > 0,
logicToUse);
break;
case CmdLineOpts.Solver.Z3:
solverImpl = new Solver.Z3SMTLIBSolver(options.UseNamedAttributes > 0,
options.pathToSolver,
options.PersistentSolver > 0,
options.emitTriggers > 0,
logicToUse);
break;
case CmdLineOpts.Solver.DUMMY:
solverImpl = new Solver.DummySolver(Symbooglix.Solver.Result.UNKNOWN);
break;
default:
throw new NotSupportedException("Unhandled solver type");
}
if (options.queryLogPath.Length > 0)
{
// FIXME: How are we going to ensure this file gets closed properly?
StreamWriter QueryLogFile = new StreamWriter(options.queryLogPath, /*append=*/ options.appendLoggedQueries > 0);
solverImpl = new Solver.SMTLIBQueryLoggingSolverImpl(solverImpl, QueryLogFile, /*useNamedAttributeBindings=*/ true, options.humanReadable > 0);
}
if (options.CachingSolver >= 0)
{
solverImpl = new Solver.SimpleSolverCache(solverImpl, options.CachingSolver);
}
if (options.ConstraintIndepenceSolver > 0)
{
solverImpl = new Solver.ConstraintIndependenceSolver(solverImpl);
}
// Only support this for now.
Solver.ISolver solver = new Solver.SimpleSolver(solverImpl);
solver.SetTimeout(options.solverTimeout);
return(solver);
}
