intermediate commit

Former-commit-id: 6acb50ec62

src/models/sparse/Model.cpp

@@ -320,6 +320,9 @@ namespace storm {
                 return this->rewardModels;
             }
 
+            std::set<storm::Variable> getProbabilityParameters(Model<storm::RationalNumber> const& model) {
+                return storm::storage::getVariables(model.getTransitionMatrix());
+            }
             
             template class Model<double>;
             template class Model<float>;

src/models/sparse/Model.h

@@ -345,6 +345,7 @@ namespace storm {
                 boost::optional<std::vector<LabelSet>> choiceLabeling;
             };
             
+            std::set<storm::Variable> getProbabilityParameters(Model<storm::RationalFunction> const& model);
         } // namespace sparse
     } // namespace models
 } // namespace storm

src/storage/SparseMatrix.h

@@ -969,6 +969,14 @@ namespace storm {
             std::vector<index_type> rowGroupIndices;
             
         };
+        
+        std::set<storm::Variable> getVariables(SparseMatrix<storm::RationalFunction> const& matrix) {
+            std::set<storm::Variable> result;
+            for(auto const& entry : matrix) {
+                entry.probability.gatherVariables(result);
+            }
+            return result;
+        }
 
     } // namespace storage
 } // namespace storm