diff --git a/examples/dft/pand_param.dft b/examples/dft/pand_param.dft
new file mode 100644
index 000000000..9a0b3d211
--- /dev/null
+++ b/examples/dft/pand_param.dft
@@ -0,0 +1,6 @@
+param x;
+param y;
+toplevel "A";
+"A" pand "B" "C";
+"B" lambda=x dorm=0.3;
+"C" lambda=y dorm=0.3;
diff --git a/examples/dft/tripple_pand.dft b/examples/dft/tripple_pand.dft
new file mode 100644
index 000000000..7b38cf0f1
--- /dev/null
+++ b/examples/dft/tripple_pand.dft
@@ -0,0 +1,9 @@
+toplevel "A";
+"A" pand "B" "BE4";
+"B" pand "C" "BE3";
+"C" pand "BE1" "BE2";
+"BE1" lambda=0.5 dorm=3;
+"BE2" lambda=0.5 dorm=3;
+"BE3" lambda=0.5 dorm=3;
+"BE4" lambda=0.5 dorm=3;
+
diff --git a/examples/dft/tripple_pand2.dft b/examples/dft/tripple_pand2.dft
new file mode 100644
index 000000000..4e6ef460f
--- /dev/null
+++ b/examples/dft/tripple_pand2.dft
@@ -0,0 +1,8 @@
+toplevel "A";
+"A" pand "B" "C";
+"B" pand "BE1" "BE2";
+"C" pand "BE2" "BE3";
+"BE1" lambda=0.5 dorm=3;
+"BE2" lambda=0.5 dorm=3;
+"BE3" lambda=0.5 dorm=3;
+
diff --git a/examples/dft/tripple_pand2_c.dft b/examples/dft/tripple_pand2_c.dft
new file mode 100644
index 000000000..1c6001ea4
--- /dev/null
+++ b/examples/dft/tripple_pand2_c.dft
@@ -0,0 +1,6 @@
+toplevel "A";
+"A" pand "BE1" "BE2" "BE3";
+"BE1" lambda=0.5 dorm=3;
+"BE2" lambda=0.5 dorm=3;
+"BE3" lambda=0.5 dorm=3;
+
diff --git a/examples/dft/tripple_pand_c.dft b/examples/dft/tripple_pand_c.dft
new file mode 100644
index 000000000..bfb8daa1c
--- /dev/null
+++ b/examples/dft/tripple_pand_c.dft
@@ -0,0 +1,7 @@
+toplevel "A";
+"A" pand "BE1" "BE2" "BE3" "BE4";
+"BE1" lambda=0.5 dorm=3;
+"BE2" lambda=0.5 dorm=3;
+"BE3" lambda=0.5 dorm=3;
+"BE4" lambda=0.5 dorm=3;
+
diff --git a/src/builder/ExplicitDFTModelBuilder.cpp b/src/builder/ExplicitDFTModelBuilder.cpp
index c0c596b02..0d37e795f 100644
--- a/src/builder/ExplicitDFTModelBuilder.cpp
+++ b/src/builder/ExplicitDFTModelBuilder.cpp
@@ -62,12 +62,8 @@ namespace storm {
                 }
             }
 
-            // TODO Matthias: initialize
-            modelComponents.rewardModels;
-            modelComponents.choiceLabeling;
-
             std::shared_ptr<storm::models::sparse::Model<ValueType, RewardModelType>> model;
-            model = std::shared_ptr<storm::models::sparse::Model<ValueType, RewardModelType>>(new storm::models::sparse::Ctmc<ValueType, RewardModelType>(std::move(modelComponents.transitionMatrix), std::move(modelComponents.stateLabeling), std::move(modelComponents.rewardModels), std::move(modelComponents.choiceLabeling)));
+            model = std::shared_ptr<storm::models::sparse::Model<ValueType, RewardModelType>>(new storm::models::sparse::Ctmc<ValueType, RewardModelType>(std::move(modelComponents.transitionMatrix), std::move(modelComponents.stateLabeling)));
             model->printModelInformationToStream(std::cout);
             return model;
         }
@@ -149,10 +145,16 @@ namespace storm {
                     }
 
                     // Set transition
-                    ValueType prob = nextBE.first->activeFailureRate();
-                    auto resultInsert = outgoingTransitions.insert(std::make_pair(it->getId(), prob));
-                    assert(resultInsert.second);
-                    sum += prob;
+                    ValueType rate = nextBE.first->activeFailureRate();
+                    auto resultFind = outgoingTransitions.find(it->getId());
+                    if (resultFind != outgoingTransitions.end()) {
+                        // Add to existing transition
+                        resultFind->second += rate;
+                    } else {
+                        // Insert new transition
+                        outgoingTransitions.insert(std::make_pair(it->getId(), rate));
+                    }
+                    sum += rate;
                 } // end while failing BE
 
                 // Add all transitions