Added proper canHandle method to propositional model checker.

Former-commit-id: 4af714e31a

src/modelchecker/propositional/SparsePropositionalModelChecker.cpp

@@ -15,6 +15,11 @@ namespace storm {
             // Intentionally left empty.
         }
         
+        template<typename ValueType>
+        bool SparsePropositionalModelChecker<ValueType>::canHandle(storm::logic::Formula const& formula) const {
+            return formula.isPropositionalFormula();
+        }
+        
         template<typename ValueType>
         std::unique_ptr<CheckResult> SparsePropositionalModelChecker<ValueType>::checkBooleanLiteralFormula(storm::logic::BooleanLiteralFormula const& stateFormula) {
             if (stateFormula.isTrueFormula()) {

src/modelchecker/propositional/SparsePropositionalModelChecker.h

@@ -14,6 +14,7 @@ namespace storm {
             explicit SparsePropositionalModelChecker(storm::models::AbstractModel<ValueType> const& model);
             
             // The implemented methods of the AbstractModelChecker interface.
+            virtual bool canHandle(storm::logic::Formula const& formula) const override;
             virtual std::unique_ptr<CheckResult> checkBooleanLiteralFormula(storm::logic::BooleanLiteralFormula const& stateFormula) override;
             virtual std::unique_ptr<CheckResult> checkAtomicLabelFormula(storm::logic::AtomicLabelFormula const& stateFormula) override;