Program: 45346
Project: 45346
Buggy source:
private void distributeTask(TaskAdvReply taskAdvReply){
  String taskId=taskAdvReply.getTaskId();
  Node node=taskAdvReply.getNode();
  TaskLookup taskLookup=taskLookups.get(taskId);
  Task taskToDistribute=(taskLookups.get(taskId)).getTask();
  if (taskToDistribute.getTaskBattreyLoad() <= 0) {
    return;
  }
  if (taskLookup.getStatus() == Preferences.TASK_STATUS.DISTRIBUTED) {
    return;
  }
  if (!isNodeSuitableForDistribution(node,taskLookup)) {
    return;
  }
  int loadDistributed=(int)Math.ceil((taskToDistribute.getTaskBattreyLoad() > taskAdvReply.getLoadCanServe()) ? (taskAdvReply.getLoadCanServe()) : taskToDistribute.getTaskBattreyLoad());
  taskToDistribute.setTaskBattreyLoad(taskToDistribute.getTaskBattreyLoad() - loadDistributed);
  if (taskToDistribute.getTaskBattreyLoad() <= 0) {
    taskLookup.setStatus(Preferences.TASK_STATUS.DISTRIBUTED);
  }
  Serializable[] parameters=new Serializable[2];
  parameters[0]=10;
  parameters[1]=20;
  DistributedTask dsTask=new DistributedTask(taskToDistribute.getTaskProcessorLoad(),taskToDistribute.getTaskMemoryLoad(),loadDistributed,taskId,taskToDistribute.getSource(),"String_Node_Str","String_Node_Str",parameters);
  TaskChunk taskChunk=new TaskChunk(taskId,node,taskLookup.nextSequenceNumber(),dsTask,taskAdvReply.getTaskAdvReplyId());
  taskLookup.addToTaskGroup(taskChunk.getTaskAdvReplyId(),taskChunk);
  Message distMsg=new Message(node.getName(),"String_Node_Str","String_Node_Str",taskChunk,host);
  distMsg.setNormalMsgType(Message.NormalMsgType.DISTRIBUTED_TASK);
  if (Preferences.DEBUG_MODE) {
    try {
      System.out.println("String_Node_Str" + node.getName() + "String_Node_Str"+ node.getAdrress()+ "String_Node_Str"+ node.getNodePort());
    }
 catch (    UnknownHostException e) {
      e.printStackTrace();
    }
  }
  sendAndRetryTaskChunk(taskChunk,distMsg,dsTask,loadDistributed,taskLookup);
}

Fixed version (ground truth):
private synchronized void distributeTask(TaskAdvReply taskAdvReply){
  String taskId=taskAdvReply.getTaskId();
  Node node=taskAdvReply.getNode();
  TaskLookup taskLookup=taskLookups.get(taskId);
  Task taskToDistribute=(taskLookups.get(taskId)).getTask();
  int loadDistributed;
  if (taskToDistribute.getTaskBattreyLoad() <= 0) {
    return;
  }
  if (taskLookup.getStatus() == Preferences.TASK_STATUS.DISTRIBUTED) {
    return;
  }
  if (!isNodeSuitableForDistribution(node,taskLookup)) {
    return;
  }
  loadDistributed=(int)Math.ceil((taskToDistribute.getTaskBattreyLoad() > taskAdvReply.getLoadCanServe()) ? (taskAdvReply.getLoadCanServe()) : taskToDistribute.getTaskBattreyLoad());
  taskToDistribute.setTaskBattreyLoad(taskToDistribute.getTaskBattreyLoad() - loadDistributed);
  if (taskToDistribute.getTaskBattreyLoad() <= 0) {
    taskLookup.setStatus(Preferences.TASK_STATUS.DISTRIBUTED);
  }
  Serializable[] parameters=new Serializable[2];
  parameters[0]=10;
  parameters[1]=20;
  DistributedTask dsTask=new DistributedTask(taskToDistribute.getTaskProcessorLoad(),taskToDistribute.getTaskMemoryLoad(),loadDistributed,taskId,taskToDistribute.getSource(),"String_Node_Str","String_Node_Str",parameters);
  TaskChunk taskChunk=new TaskChunk(taskId,node,taskLookup.nextSequenceNumber(),dsTask,taskAdvReply.getTaskAdvReplyId());
  taskLookup.addToTaskGroup(taskChunk.getTaskAdvReplyId(),taskChunk);
  Message distMsg=new Message(node.getName(),"String_Node_Str","String_Node_Str",taskChunk,host);
  distMsg.setNormalMsgType(Message.NormalMsgType.DISTRIBUTED_TASK);
  if (Preferences.DEBUG_MODE) {
    try {
      System.out.println("String_Node_Str" + node.getName() + "String_Node_Str"+ node.getAdrress()+ "String_Node_Str"+ node.getNodePort());
    }
 catch (    UnknownHostException e) {
      e.printStackTrace();
    }
  }
  sendAndRetryTaskChunk(taskChunk,distMsg,dsTask,loadDistributed,taskLookup);
}