Testing the implementation; fixing a bug.

diff --git a/src/main/gov/nasa/jpf/listener/DPORStateReducerEfficient.java b/src/main/gov/nasa/jpf/listener/DPORStateReducerEfficient.java
index 7512691915478dfd6c6bd197864a5fbb3d602957..594829080a3ef30b4f04fe746f2ab4a38d4fb01e 100644 (file)
--- a/src/main/gov/nasa/jpf/listener/DPORStateReducerEfficient.java
+++ b/src/main/gov/nasa/jpf/listener/DPORStateReducerEfficient.java
@@ -444,6 +444,11 @@ public class DPORStateReducerEfficient extends ListenerAdapter {
     }
 
     public HashMap<Integer, SummaryNode> getReachableTransitionsSummary(int stateId) {
+      // Just return an empty map if the state ID is not recorded yet
+      // This means that there is no reachable transition from this state
+      if (!graphSummary.containsKey(stateId)) {
+        return new HashMap<>();
+      }
       return graphSummary.get(stateId);
     }