private static void AssertSat(string formulaString, bool expected)
        {
            Stopwatch stopwatch = new Stopwatch();

            stopwatch.Start();
            bool Completed = ExecuteWithTimeLimit(TimeSpan.FromMilliseconds(timelimit), () =>
            {
                FormulaNode formula = FormulaParser.Parse(formulaString);
                Console.WriteLine("\nTEST: " + formulaString);
                var checker = new CTLSatisfiabilityChecker(formula);
                bool result = checker.Check();
                Console.WriteLine("Done");
                if (result != expected)
                {
                    throw new Exception("Wrong SAT value for " + formulaString);
                }
            });

            stopwatch.Stop();
            double time = (double)stopwatch.ElapsedMilliseconds / 1000.0;

            Console.WriteLine("TIME: " + time);
        }