@ -258,7 +258,7 @@ namespace storm {
auto succ1 = successors.getNextSetIndex(0);
auto succ2 = successors.getNextSetIndex(succ1 + 1);
if (seenStates[stateNumber] && successors.size() == 2
if (seenStates[stateNumber] && successors.getNumberOfSetBits() == 2
&& (seenStates[succ1] || seenStates[succ2])
&& (!seenStates[succ1] || !seenStates[succ2])) {