Program: 178996
Project: 178996
Buggy source:
@Override public long createProcess(String id){
  if (id == null || id.isEmpty()) {
    throw new IllegalArgumentException("String_Node_Str");
  }
  if (!getProcessDefinitions().containsKey(id)) {
    throw new IllegalArgumentException("String_Node_Str" + id + "String_Node_Str");
  }
  TProcess tProcess=getProcessDefinitions().get(id).getProcessDefinition();
  BusinessProcess process;
  AnnotatedClass ac=dictionary.findProcess(id,tProcess.getName());
  if (ac == null) {
    process=new BusinessProcess();
  }
 else {
    Object entity;
    try {
      entity=Class.forName(ac.getClazz()).newInstance();
    }
 catch (    Exception e) {
      throw new IllegalStateException("String_Node_Str" + ac.getClazz() + "String_Node_Str"+ e);
    }
    if (!(entity instanceof BusinessProcess)) {
      throw new IllegalStateException("String_Node_Str" + ac.getClazz() + "String_Node_Str");
    }
    process=(BusinessProcess)entity;
  }
  acquireEntityManager();
  process.setDefinitionId(id);
  process.setSessionId(getId());
  persist(process);
  final List<TActivity> startActivities=new ArrayList<TActivity>();
  final List<TCatchEvent> noneStartEvents=new ArrayList<TCatchEvent>();
  final List<TCatchEvent> startEvents=new ArrayList<TCatchEvent>();
  forEachStartNode(tProcess,new EachNodeHandler(){
    public boolean node(    TFlowNode tNode){
      if (tNode instanceof TCatchEvent) {
        if (((TCatchEvent)tNode).getEventDefinition().isEmpty()) {
          noneStartEvents.add((TCatchEvent)tNode);
        }
 else {
          startEvents.add((TCatchEvent)tNode);
        }
      }
 else       if (tNode instanceof TActivity) {
        startActivities.add((TActivity)tNode);
      }
      return true;
    }
  }
);
  for (  TActivity activity : startActivities) {
    Node node=createNode(activity,process);
    node.tokenIn(new WorkToken(),null);
    merge(node);
  }
  if (noneStartEvents.isEmpty()) {
    for (    TCatchEvent start : startEvents) {
      CatchEventNode node=(CatchEventNode)createNode(start,process);
      node.setStartEvent(true);
      merge(node);
    }
  }
 else {
    CatchEventNode node=(CatchEventNode)createNode(noneStartEvents.get(0),process);
    node.eventIn(new EventToken());
    node.setStartEvent(true);
    merge(node);
  }
  if (isRunner()) {
    em.get().flush();
  }
  releaseEntityManager();
  return process.getInstanceId();
}

Fixed version (ground truth):
@Override public long createProcess(String id){
  if (id == null || id.isEmpty()) {
    throw new IllegalArgumentException("String_Node_Str");
  }
  if (!getProcessDefinitions().containsKey(id)) {
    throw new IllegalArgumentException("String_Node_Str" + id + "String_Node_Str");
  }
  TProcess tProcess=getProcessDefinitions().get(id).getProcessDefinition();
  BusinessProcess process;
  AnnotatedClass ac=dictionary.findProcess(id,tProcess.getName());
  if (ac == null) {
    process=new BusinessProcess();
  }
 else {
    Object entity;
    try {
      entity=Class.forName(ac.getClazz()).newInstance();
    }
 catch (    Exception e) {
      throw new IllegalStateException("String_Node_Str" + ac.getClazz() + "String_Node_Str"+ e);
    }
    if (!(entity instanceof BusinessProcess)) {
      throw new IllegalStateException("String_Node_Str" + ac.getClazz() + "String_Node_Str");
    }
    process=(BusinessProcess)entity;
  }
  acquireEntityManager();
  process.setDefinitionId(id);
  process.setSessionId(getId());
  persist(process);
  final List<TActivity> startActivities=new ArrayList<TActivity>();
  final List<TCatchEvent> noneStartEvents=new ArrayList<TCatchEvent>();
  final List<TCatchEvent> startEvents=new ArrayList<TCatchEvent>();
  forEachStartNode(tProcess,new EachNodeHandler(){
    public boolean node(    TFlowNode tNode){
      if (tNode instanceof TCatchEvent) {
        if (((TCatchEvent)tNode).getEventDefinition().isEmpty()) {
          noneStartEvents.add((TCatchEvent)tNode);
        }
 else {
          startEvents.add((TCatchEvent)tNode);
        }
      }
 else       if (tNode instanceof TActivity) {
        startActivities.add((TActivity)tNode);
      }
      return true;
    }
  }
);
  for (  TActivity activity : startActivities) {
    Node node=createNode(activity,process);
    tokenOut.set(false);
    node.tokenIn(new WorkToken(),null);
    if (!isRunner() && !tokenOut.get()) {
      merge(node);
    }
  }
  if (noneStartEvents.isEmpty()) {
    for (    TCatchEvent start : startEvents) {
      CatchEventNode node=(CatchEventNode)createNode(start,process);
      node.setStartEvent(true);
      if (!isRunner()) {
        merge(node);
      }
    }
  }
 else {
    CatchEventNode node=(CatchEventNode)createNode(noneStartEvents.get(0),process);
    tokenOut.set(false);
    node.eventIn(new EventToken());
    node.setStartEvent(true);
    if (!isRunner() && !tokenOut.get()) {
      merge(node);
    }
  }
  if (isRunner()) {
    em.get().flush();
  }
  releaseEntityManager();
  return process.getInstanceId();
}