--- a/src/main/gov/nasa/jpf/util/event/Event.java	Wed Feb 11 19:16:10 2015 -0800
+++ b/src/main/gov/nasa/jpf/util/event/Event.java	Fri Feb 13 20:20:15 2015 -0800
@@ -182,6 +182,20 @@
     return n;
   }
 
+  public boolean hasAlternatives(){
+    return (alt != null);
+  }
+  
+  public List<Event> getAlternatives(){
+    List<Event> list = new ArrayList<Event>();
+    list.add(this);
+    for (Event e = alt; e != null; e = e.alt) {
+      list.add(e);
+    }
+    return list;
+  }
+  
+  
   public Event unlinkedClone(){
     try {
       Event e = (Event)super.clone();

--- a/src/main/gov/nasa/jpf/util/event/EventChoiceGenerator.java	Wed Feb 11 19:16:10 2015 -0800
+++ b/src/main/gov/nasa/jpf/util/event/EventChoiceGenerator.java	Fri Feb 13 20:20:15 2015 -0800
@@ -207,4 +207,44 @@
   public Class<Event> getChoiceType() {
     return Event.class;
   }
+  
+  protected Event[] getFirstNChoices(int n){
+    Event[] a = new Event[n];
+    
+    Event e = base;
+    for (int i=0; i<n; i++){
+      a[i] = e;
+      e = e.getAlt();
+    }
+    
+    return a;
+  }
+
+  @Override
+  public Event[] getAllChoices(){
+    return getFirstNChoices( getTotalNumberOfChoices());
+  }
+
+  @Override
+  public Event[] getProcessedChoices(){
+    return getFirstNChoices( getProcessedNumberOfChoices());
+  }
+  
+  @Override
+  public Event[] getUnprocessedChoices(){
+    int n=0;
+    for (Event e=cur; e != null; e = e.getAlt()){
+      n++;
+    }
+    
+    Event[] a = new Event[n];
+    
+    Event e = cur;
+    for (int i=0; i<n; i++){
+      a[i] = e;
+      e = e.getAlt();
+    }
+    
+    return a;    
+  }
 }