diff --git a/src/storm-pars/analysis/Lattice.cpp b/src/storm-pars/analysis/Lattice.cpp
index 8023fd835..f710f2fbb 100644
--- a/src/storm-pars/analysis/Lattice.cpp
+++ b/src/storm-pars/analysis/Lattice.cpp
@@ -8,17 +8,28 @@ namespace storm {
     namespace analysis {
         Lattice::Lattice(storm::storage::BitVector topStates,
                          storm::storage::BitVector bottomStates, uint_fast64_t numberOfStates) {
+
             Node *top = new Node();
             top->states = topStates;
             Node *bottom = new Node();
             bottom->states = bottomStates;
             top->below.push_back(bottom);
             bottom->above.push_back(top);
-            nodes = std::vector<Node *>({top, bottom});
+
+            nodes = std::vector<Node *>(numberOfStates);
+            for (auto i = topStates.getNextSetIndex(0); i < numberOfStates; i = topStates.getNextSetIndex(i+1)) {
+                nodes.at(i) = top;
+
+            }
+            for (auto i = bottomStates.getNextSetIndex(0); i < numberOfStates; i = bottomStates.getNextSetIndex(i+1)) {
+                nodes.at(i) = bottom;
+            }
             this->numberOfStates = numberOfStates;
+
         }
 
         void Lattice::addBetween(uint_fast64_t state, Node *above, Node *below) {
+            std::cout << "Adding: " << state << std::endl;
             Node *newNode = new Node();
             newNode->states = storm::storage::BitVector(numberOfStates);
             newNode->states.set(state);
@@ -28,11 +39,12 @@ namespace storm {
             remove(&(above->below), below);
             (below->above).push_back(newNode);
             above->below.push_back(newNode);
-            nodes.push_back(newNode);
+            nodes.at(state) = newNode;
         }
 
         void Lattice::addToNode(uint_fast64_t state, Node *node) {
             node->states.set(state);
+            nodes.at(state) = node;
         }
 
         int Lattice::compare(uint_fast64_t state1, uint_fast64_t state2) {
@@ -57,68 +69,67 @@ namespace storm {
         }
 
         Lattice::Node *Lattice::getNode(uint_fast64_t stateNumber) {
-            Node *node;
-            for (auto itr = nodes.begin(); itr != nodes.end(); ++itr) {
-                storm::storage::BitVector states = (*itr)->states;
-
-                if (states[stateNumber]) return (*itr);
-            }
-            return node;
+            return nodes.at(stateNumber);
         }
 
         void Lattice::toString(std::ostream &out) {
+            std::vector<Node*> printedNodes = std::vector<Node*>({});
             for (auto itr = nodes.begin(); itr != nodes.end(); ++itr) {
-                Node *node = *itr;
-                out << "Node: {";
-                uint_fast64_t index = node->states.getNextSetIndex(0);
-                while (index < numberOfStates) {
-                    out << index;
-                    index = node->states.getNextSetIndex(index+1);
-                    if (index < numberOfStates) {
-                        out << ", ";
-                    }
-                }
-                out << "}" << "\n";
-                out << "  Address: " << node << "\n";
-                out << "    Above: {";
-                for (auto itr2 = node->above.begin(); itr2 != node->above.end(); ++itr2) {
-                    Node *above = *itr2;
-                    out << "{";
-                    index = above->states.getNextSetIndex(0);
+
+                if (std::find(printedNodes.begin(), printedNodes.end(), (*itr)) == printedNodes.end()) {
+                    Node *node = *itr;
+                    printedNodes.push_back(*itr);
+                    out << "Node: {";
+                    uint_fast64_t index = node->states.getNextSetIndex(0);
                     while (index < numberOfStates) {
                         out << index;
-                        index = above->states.getNextSetIndex(index+1);
+                        index = node->states.getNextSetIndex(index + 1);
                         if (index < numberOfStates) {
                             out << ", ";
                         }
                     }
+                    out << "}" << "\n";
+                    out << "  Address: " << node << "\n";
+                    out << "    Above: {";
+                    for (auto itr2 = node->above.begin(); itr2 != node->above.end(); ++itr2) {
+                        Node *above = *itr2;
+                        out << "{";
+                        index = above->states.getNextSetIndex(0);
+                        while (index < numberOfStates) {
+                            out << index;
+                            index = above->states.getNextSetIndex(index + 1);
+                            if (index < numberOfStates) {
+                                out << ", ";
+                            }
+                        }
 
-                    out << "}";
-                    if (itr2 + 1 != node->above.end()) {
-                        out << ", ";
-                    }
-                }
-                out << "}" << "\n";
-
-                out << "    Below: {";
-                for (auto itr2 = node->below.begin(); itr2 != node->below.end(); ++itr2) {
-                    Node *below = *itr2;
-                    out << "{";
-                    index = below->states.getNextSetIndex(0);
-                    while (index < numberOfStates) {
-                        out << index;
-                        index = below->states.getNextSetIndex(index+1);
-                        if (index < numberOfStates) {
+                        out << "}";
+                        if (itr2 + 1 != node->above.end()) {
                             out << ", ";
                         }
                     }
+                    out << "}" << "\n";
+
+                    out << "    Below: {";
+                    for (auto itr2 = node->below.begin(); itr2 != node->below.end(); ++itr2) {
+                        Node *below = *itr2;
+                        out << "{";
+                        index = below->states.getNextSetIndex(0);
+                        while (index < numberOfStates) {
+                            out << index;
+                            index = below->states.getNextSetIndex(index + 1);
+                            if (index < numberOfStates) {
+                                out << ", ";
+                            }
+                        }
 
-                    out << "}";
-                    if (itr2 + 1 != node->below.end()) {
-                        out << ", ";
+                        out << "}";
+                        if (itr2 + 1 != node->below.end()) {
+                            out << ", ";
+                        }
                     }
+                    out << "}" << "\n";
                 }
-                out << "}" << "\n";
             }
         }