output: #fixed code
                                  public void free()
      {
          logger.fine("Free ICE agent");
  
          shutdown = true;
  
          //stop sending keep alives (STUN Binding Indications).
          if (stunKeepAliveThread != null)
              stunKeepAliveThread.interrupt();
  
          // cancel termination timer in case agent is freed
          // before termination timer is triggered
          synchronized (terminationFutureSyncRoot)
          {
              if (terminationFuture != null)
              {
                  terminationFuture.cancel(true);
                  terminationFuture = null;
              }
          }
  
          //stop responding to STUN Binding Requests.
          connCheckServer.stop();
  
          /*
           * Set the IceProcessingState#TERMINATED state on this Agent unless it
           * is in a termination state already.
           */
          IceProcessingState state = getState();
  
          if (!IceProcessingState.FAILED.equals(state)
               && !IceProcessingState.TERMINATED.equals(state))
          {
              terminate(IceProcessingState.TERMINATED);
          }
  
          // Free its IceMediaStreams, Components and Candidates.
          boolean interrupted = false;
  
          logger.fine("remove streams");
          for (IceMediaStream stream : getStreams())
          {
              try
              {
                  removeStream(stream);
                  logger.fine("remove stream " + stream.getName());
              }
              catch (Throwable t)
              {
                  logger.fine(
                          "remove stream " + stream.getName() + " failed: " + t);
                  if (t instanceof InterruptedException)
                      interrupted = true;
                  else if (t instanceof ThreadDeath)
                      throw (ThreadDeath) t;
              }
          }
          if (interrupted)
              Thread.currentThread().interrupt();
  
          getStunStack().shutDown();
  
          logger.fine("ICE agent freed");
      }
input: #vulnerable code 
                                  public void free()
      {
          logger.fine("Free ICE agent");
  
          shutdown = true;
  
          //stop sending keep alives (STUN Binding Indications).
          if (stunKeepAliveThread != null)
              stunKeepAliveThread.interrupt();
  
          //stop responding to STUN Binding Requests.
          connCheckServer.stop();
  
          /*
           * Set the IceProcessingState#TERMINATED state on this Agent unless it
           * is in a termination state already.
           */
          IceProcessingState state = getState();
  
          if (!IceProcessingState.FAILED.equals(state)
               && !IceProcessingState.TERMINATED.equals(state))
          {
              terminate(IceProcessingState.TERMINATED);
          }
  
          // Free its IceMediaStreams, Components and Candidates.
          boolean interrupted = false;
  
          logger.fine("remove streams");
          for (IceMediaStream stream : getStreams())
          {
              try
              {
                  removeStream(stream);
                  logger.fine("remove stream " + stream.getName());
              }
              catch (Throwable t)
              {
                  logger.fine(
                          "remove stream " + stream.getName() + " failed: " + t);
                  if (t instanceof InterruptedException)
                      interrupted = true;
                  else if (t instanceof ThreadDeath)
                      throw (ThreadDeath) t;
              }
          }
          if (interrupted)
              Thread.currentThread().interrupt();
  
          getStunStack().shutDown();
  
          logger.fine("ICE agent freed");
      } 
                              #location 34 
                              #vulnerability type THREAD_SAFETY_VIOLATION