Program: 73533
Project: 73533
Buggy source:
public void fire() throws IllegalActionException {
  if (_debugging) {
    _debug("String_Node_Str");
  }
  if (_needNewGenerator) {
    _createGenerator();
  }
  if (_needNew) {
    _generateRandomNumber();
    _needNew=false;
  }
  List<Actor> entities=((CompositeActor)container).deepEntityList();
  for (  Actor actor : entities) {
    _myPhysicalTime=actor.getDirector().getModelTime().getDoubleValue() + _overRunThusFar;
    if (_debugging) {
      _debug("String_Node_Str" + actor.getName());
    }
    double actorWCET;
    Attribute executionTime=((Entity)actor).getAttribute("String_Node_Str");
    Attribute WCET=((Entity)actor).getAttribute("String_Node_Str");
    actorWCET=((DoubleToken)((Variable)WCET).getToken()).doubleValue();
    double t=_random.nextDouble() * 2 * actorWCET;
    if (t > actorWCET) {
      _overRunThusFar+=(t - actorWCET);
      _myPhysicalTime+=t;
      System.out.println("String_Node_Str" + actorWCET + "String_Node_Str"+ t);
      System.out.println("String_Node_Str" + (actor.getDirector().getModelTime().getDoubleValue() + actorWCET) + "String_Node_Str"+ _myPhysicalTime);
    }
    Parameter dummyP=(Parameter)executionTime;
    dummyP.setExpression(Double.toString(t));
  }
  if (_debugging) {
    _debug("String_Node_Str" + "String_Node_Str");
  }
}

Fixed version (ground truth):
public void fire() throws IllegalActionException {
  if (!_readyToFire) {
    return;
  }
  if (_debugging) {
    _debug("String_Node_Str" + container);
  }
  if (_debugging) {
    _debug("String_Node_Str");
  }
  if (_needNewGenerator) {
    _createGenerator();
  }
  if (_needNew) {
    _generateRandomNumber();
    _needNew=false;
  }
  if (!_readyToFire) {
    return;
  }
  while ((_unitIndex < _schedule.size())) {
    Schedule unitSchedule=(Schedule)_schedule.get(_unitIndex);
    Iterator scheduleIterator=unitSchedule.iterator();
    while (scheduleIterator.hasNext()) {
      Actor actor=((Firing)scheduleIterator.next()).getActor();
      if (_debugging) {
        _debug("String_Node_Str" + actor.getFullName());
      }
      _myPhysicalTime=actor.getDirector().getModelTime().getDoubleValue() + _overRunThusFar;
      double actorWCET;
      Attribute executionTime=((Entity)actor).getAttribute("String_Node_Str");
      Attribute WCET=((Entity)actor).getAttribute("String_Node_Str");
      actorWCET=((DoubleToken)((Variable)WCET).getToken()).doubleValue();
      double t=_random.nextDouble() * 2 * actorWCET;
      if (_debugging) {
        _debug("String_Node_Str" + t);
      }
      _totalObservedExecutionTime+=t;
      if (t > actorWCET) {
        _overRunThusFar+=(t - actorWCET);
        _myPhysicalTime+=t;
        if (_debugging) {
          _debug("String_Node_Str" + actorWCET + "String_Node_Str"+ t);
          _debug("String_Node_Str" + (actor.getDirector().getModelTime().getDoubleValue() + actorWCET) + "String_Node_Str"+ _myPhysicalTime);
        }
      }
      Parameter dummyP=(Parameter)executionTime;
      dummyP.setExpression(Double.toString(t));
      if (_debugging) {
        _debug("String_Node_Str" + actor + "String_Node_Str");
      }
    }
    scheduleIterator=unitSchedule.iterator();
    while (scheduleIterator.hasNext()) {
      Actor actor1=((Firing)scheduleIterator.next()).getActor();
      if (_debugging) {
        _debug("String_Node_Str" + ((NamedObj)actor1).getFullName());
      }
      if (actor1.iterate(1) == STOP_ITERATING) {
        System.err.println("String_Node_Str" + "String_Node_Str" + actor1.getFullName() + "String_Node_Str");
      }
    }
    _unitIndex++;
  }
  if (_unitIndex >= _schedule.size()) {
    _unitIndex=0;
  }
}