Program: 3107
Project: 3107
Buggy source:
public void run(){
  int port=portLocator.getTaskPort(btrace);
  LOGGER.log(Level.FINEST,"String_Node_Str",port);
  BTraceSettings settings=settingsProvider.getSettings();
  final Client client=new Client(port,"String_Node_Str",settings.isDebugMode(),true,btrace.isUnsafe(),settings.isDumpClasses(),settings.getDumpClassPath());
  try {
    client.attach(String.valueOf(btrace.getPid()),compiler.getAgentJarPath(),compiler.getToolsJarPath(),null);
    Thread.sleep(200);
    client.submit(bytecode,new String[]{},new CommandListener(){
      private boolean retransforming=false;
      public void onCommand(      Command cmd) throws IOException {
        LOGGER.log(Level.FINEST,"String_Node_Str",cmd.toString());
switch (cmd.getType()) {
case Command.SUCCESS:
{
            if (retransforming) {
              clientMap.put(btrace,client);
              result.set(true);
              latch.countDown();
              retransforming=false;
            }
            break;
          }
case Command.EXIT:
{
          latch.countDown();
          stop(btrace);
          break;
        }
case Command.RETRANSFORMATION_START:
{
        int numClasses=((RetransformationStartNotification)cmd).getNumClasses();
        btrace.setInstrClasses(numClasses);
        btrace.setState(BTraceTask.State.INSTRUMENTING);
        retransforming=true;
        break;
      }
  }
  btrace.dispatchCommand(cmd);
}
}
);
}
 catch (Exception e) {
LOGGER.log(Level.FINE,e.getLocalizedMessage(),e);
result.set(false);
latch.countDown();
}
}

Fixed version (ground truth):
public void run(){
  int port=portLocator.getTaskPort(btrace);
  LOGGER.log(Level.FINEST,"String_Node_Str",port);
  BTraceSettings settings=settingsProvider.getSettings();
  final Client client=new Client(port,"String_Node_Str",settings.isDebugMode(),true,btrace.isUnsafe(),settings.isDumpClasses(),settings.getDumpClassPath());
  try {
    client.attach(String.valueOf(btrace.getPid()),compiler.getAgentJarPath(),compiler.getToolsJarPath(),null);
    Thread.sleep(200);
    client.submit(bytecode,new String[]{},new CommandListener(){
      private boolean retransforming=false;
      public void onCommand(      Command cmd) throws IOException {
        LOGGER.log(Level.FINEST,"String_Node_Str",cmd.toString());
switch (cmd.getType()) {
case Command.SUCCESS:
{
            if (!retransforming) {
              result.set(true);
              clientMap.put(btrace,client);
              latch.countDown();
            }
            break;
          }
case Command.EXIT:
{
          latch.countDown();
          stop(btrace);
          break;
        }
case Command.RETRANSFORMATION_START:
{
        int numClasses=((RetransformationStartNotification)cmd).getNumClasses();
        btrace.setInstrClasses(numClasses);
        btrace.setState(BTraceTask.State.INSTRUMENTING);
        retransforming=true;
        break;
      }
case Command.RETRANSFORMATION_END:
{
      if (retransforming) {
        btrace.setState(BTraceTask.State.RUNNING);
        retransforming=false;
      }
      break;
    }
}
btrace.dispatchCommand(cmd);
}
}
);
}
 catch (Exception e) {
LOGGER.log(Level.FINE,e.getLocalizedMessage(),e);
result.set(false);
latch.countDown();
}
}