diff --git a/src/builder/DdPrismModelBuilder.cpp b/src/builder/DdPrismModelBuilder.cpp
index 07a5f1100..69aea3119 100644
--- a/src/builder/DdPrismModelBuilder.cpp
+++ b/src/builder/DdPrismModelBuilder.cpp
@@ -621,6 +621,8 @@ namespace storm {
             std::pair<storm::dd::Add<Type>, ModuleDecisionDiagram> transitionMatrixModulePair = createSystemDecisionDiagram(generationInfo);
             storm::dd::Add<Type> transitionMatrix = transitionMatrixModulePair.first;
             transitionMatrix.exportToDot("trans.dot");
+            std::cout << "nnz: " << transitionMatrix.getNonZeroCount() << std::endl;
+            std::cout << "node: " << transitionMatrix.getNodeCount() << std::endl;
             ModuleDecisionDiagram const& globalModule = transitionMatrixModulePair.second;
             
             // Finally, we build the DDs for a reward structure, if requested. It is important to do this now, because
@@ -651,6 +653,9 @@ namespace storm {
                 transitionMatrixBdd = transitionMatrixBdd.existsAbstract(generationInfo.allNondeterminismVariables);
             }
             storm::dd::Bdd<Type> reachableStates = computeReachableStates(generationInfo, initialStates, transitionMatrixBdd);
+            reachableStates.exportToDot("reach.dot");
+            std::cout << "reach nnz: " << reachableStates.getNonZeroCount() << std::endl;
+            std::cout << "reach node: " << reachableStates.getNodeCount() << std::endl;
             storm::dd::Add<Type> reachableStatesAdd = reachableStates.toAdd();
             transitionMatrix *= reachableStatesAdd;
             if (stateAndTransitionRewards) {