Minor fixes.

Former-commit-id: c0d75f260e

src/modelchecker/reachability/SparseSccModelChecker.cpp

@@ -78,7 +78,7 @@ namespace storm {
                         storm::storage::BitVector entryStates(dtmc.getNumberOfStates());
                         for (auto const& state : newScc) {
                             for (auto const& predecessor : backwardTransitions.getRow(state)) {
-                                if (predecessor.getValue() > storm::utility::constantZero<ValueType>() && !newSccAsBitVector.get(predecessor.getColumn())) {
+                                if (predecessor.getValue() != storm::utility::constantZero<ValueType>() && !newSccAsBitVector.get(predecessor.getColumn())) {
                                     entryStates.set(state);
                                 }
                             }

src/storage/SparseMatrix.cpp

@@ -978,13 +978,17 @@ namespace storm {
         template class SparseMatrix<int>;
         template std::ostream& operator<<(std::ostream& out, SparseMatrix<int> const& matrix);
 #ifdef PARAMETRIC_SYSTEMS
-        template class SparseMatrixBuilder<Polynomial>;
-        template class SparseMatrix<Polynomial>;
-        template std::ostream& operator<<(std::ostream& out, SparseMatrix<Polynomial> const& matrix);
+        template class MatrixEntry<typename SparseMatrix<RationalFunction>::index_type, RationalFunction>;
+        template std::ostream& operator<<(std::ostream& out, MatrixEntry<uint_fast64_t, RationalFunction> const& entry);
         template class SparseMatrixBuilder<RationalFunction>;
         template class SparseMatrix<RationalFunction>;
         template std::ostream& operator<<(std::ostream& out, SparseMatrix<RationalFunction> const& matrix);
         
+        template class MatrixEntry<typename SparseMatrix<Polynomial>::index_type, Polynomial>;
+        template std::ostream& operator<<(std::ostream& out, MatrixEntry<uint_fast64_t, Polynomial> const& entry);
+        template class SparseMatrixBuilder<Polynomial>;
+        template class SparseMatrix<Polynomial>;
+        template std::ostream& operator<<(std::ostream& out, SparseMatrix<Polynomial> const& matrix);
 #endif
         
         

src/utility/graph.h

@@ -58,7 +58,7 @@ namespace storm {
                     for (auto const& successor : transitionMatrix.getRow(currentState)) {
                         // Only explore the state if the transition was actually there and the successor has not yet
                         // been visited.
-                        if (successor.getValue() > storm::utility::constantZero<T>() && !reachableStates.get(successor.getColumn())) {
+                        if (successor.getValue() != storm::utility::constantZero<T>() && !reachableStates.get(successor.getColumn())) {
                             // If the successor is one of the target states, we need to include it, but must not explore
                             // it further.
                             if (targetStates.get(successor.getColumn())) {