Disabled MinimalLabelSetGenerator test code in storm.cpp and fixed minor issue in ExplicitModelAdapter that treated constant strings incorrectly.

Former-commit-id: 11a31be820

src/adapters/ExplicitModelAdapter.cpp

@@ -48,6 +48,7 @@ namespace storm {
         }
         
         void ExplicitModelAdapter::defineUndefinedConstants(std::string const& constantDefinitionString) {
+            if (!constantDefinitionString.empty()) {
                 // Parse the string that defines the undefined constants of the model and make sure that it contains exactly
                 // one value for each undefined constant of the model.
                 std::vector<std::string> definitions;
@@ -100,6 +101,7 @@ namespace storm {
                     }
                 }
             }
+        }
         
         void ExplicitModelAdapter::undefineUndefinedConstants() {
             for (auto nameExpressionPair : program.getBooleanUndefinedConstantExpressionsMap()) {

src/storm.cpp

@@ -336,13 +336,14 @@ int main(const int argc, const char* argv[]) {
 			std::shared_ptr<storm::models::AbstractModel<double>> model = adapter.getModel(constants);
 			model->printModelInformationToStream(std::cout);
 
-            if (model->getType() == storm::models::MDP) {
-                std::shared_ptr<storm::models::Mdp<double>> labeledMdp = model->as<storm::models::Mdp<double>>();
-                storm::storage::BitVector const& finishedStates = labeledMdp->getLabeledStates("finished");
-                storm::storage::BitVector const& allCoinsEqual1States = labeledMdp->getLabeledStates("all_coins_equal_1");
-                storm::storage::BitVector targetStates = finishedStates & allCoinsEqual1States;
-                storm::counterexamples::MinimalLabelSetGenerator<double>::getMinimalLabelSet(*labeledMdp, storm::storage::BitVector(labeledMdp->getNumberOfStates(), true), targetStates, 0.3, true, true);
-            }
+//            Enable the following lines to test the MinimalLabelSetGenerator.
+//            if (model->getType() == storm::models::MDP) {
+//                std::shared_ptr<storm::models::Mdp<double>> labeledMdp = model->as<storm::models::Mdp<double>>();
+//                storm::storage::BitVector const& finishedStates = labeledMdp->getLabeledStates("finished");
+//                storm::storage::BitVector const& allCoinsEqual1States = labeledMdp->getLabeledStates("all_coins_equal_1");
+//                storm::storage::BitVector targetStates = finishedStates & allCoinsEqual1States;
+//                storm::counterexamples::MinimalLabelSetGenerator<double>::getMinimalLabelSet(*labeledMdp, storm::storage::BitVector(labeledMdp->getNumberOfStates(), true), targetStates, 0.3, true, true);
+//            }
 		}
 
         // Perform clean-up and terminate.