Program: 4011
Project: 4011
Buggy source:
@Override protected boolean onIncoming(final IncomingMessage req,boolean shouldKeepAlive) throws Exception {
  final IncomingParser ips=this;
  incomings.add(req);
  if (!socket.is_paused()) {
    boolean needPause=socket.get_writableState().isNeedDrain();
    if (needPause) {
      socket.set_paused(true);
      socket.pause();
    }
  }
  final ServerResponse res=new ServerResponse(context,req);
  res.setShouldKeepAlive(shouldKeepAlive);
  if (socket.get_httpMessage() != null) {
    outgoings.add(res);
    Log.d(TAG,"String_Node_Str");
  }
 else {
    res.assignSocket(socket);
    Log.d(TAG,"String_Node_Str");
  }
  Listener resOnFinish=new Listener(){
    @Override public void onEvent(    Object data) throws Exception {
      assert(incomings.size() == 0 || incomings.get(0) == req);
      if (incomings.size() > 0)       incomings.remove(0);
      if (!req.is_consuming() && !req.get_readableState().isResumeScheduled())       req._dump();
      res.detachSocket(socket);
      Log.d(TAG,"String_Node_Str");
      ips.Reinitialize(ips.getType());
      if (res.is_last()) {
        Log.d(TAG,"String_Node_Str");
        socket.destroySoon();
      }
 else {
        ServerResponse m=outgoings.remove(0);
        if (m != null) {
          m.assignSocket(socket);
        }
      }
    }
  }
;
  res.on("String_Node_Str",resOnFinish);
  if (req.getHeaders().containsKey("String_Node_Str") && !req.getHeaders().get("String_Node_Str").isEmpty() && (req.getHttpVersionMajor() == 1 && req.getHttpVersionMinor() == 1)&& Pattern.matches(HTTP.continueExpression,req.getHeaders().get("String_Node_Str").get(0))) {
    res.set_expect_continue(true);
    if (self.listenerCount("String_Node_Str") > 0) {
      self.emit("String_Node_Str",new request_response_b(req,res));
    }
 else {
      res.writeContinue(null);
      self.emit("String_Node_Str",new request_response_b(req,res));
    }
  }
 else {
    self.emit("String_Node_Str",new request_response_b(req,res));
  }
  return false;
}

Fixed version (ground truth):
@Override protected boolean onIncoming(final IncomingMessage req,boolean shouldKeepAlive) throws Exception {
  final IncomingParser ips=this;
  incomings.add(req);
  if (!socket.is_paused()) {
    boolean needPause=socket.get_writableState().isNeedDrain();
    if (needPause) {
      socket.set_paused(true);
      socket.pause();
    }
  }
  final ServerResponse res=new ServerResponse(context,req);
  res.setShouldKeepAlive(shouldKeepAlive);
  if (socket.get_httpMessage() != null) {
    outgoings.add(res);
    Log.d(TAG,"String_Node_Str");
  }
 else {
    res.assignSocket(socket);
    Log.d(TAG,"String_Node_Str");
  }
  Listener resOnFinish=new Listener(){
    @Override public void onEvent(    Object data) throws Exception {
      assert(incomings.size() == 0 || incomings.get(0) == req);
      if (incomings.size() > 0)       incomings.remove(0);
      if (!req.is_consuming() && !req.get_readableState().isResumeScheduled())       req._dump();
      res.detachSocket(socket);
      Log.d(TAG,"String_Node_Str");
      ips.Reinitialize(ips.getType());
      if (res.is_last()) {
        Log.d(TAG,"String_Node_Str");
        socket.destroySoon();
      }
 else {
        ServerResponse m=outgoings.remove(0);
        if (m != null) {
          m.assignSocket(socket);
        }
      }
    }
  }
;
  res.on("String_Node_Str",resOnFinish);
  if (req.getHeaders().containsKey("String_Node_Str") && !req.getHeaders().get("String_Node_Str").isEmpty() && (req.getHttpVersionMajor() == 1 && req.getHttpVersionMinor() == 1)&& Pattern.matches(http.continueExpression,req.getHeaders().get("String_Node_Str").get(0))) {
    res.set_expect_continue(true);
    if (self.listenerCount("String_Node_Str") > 0) {
      self.emit("String_Node_Str",new request_response_b(req,res));
    }
 else {
      res.writeContinue(null);
      self.emit("String_Node_Str",new request_response_b(req,res));
    }
  }
 else {
    self.emit("String_Node_Str",new request_response_b(req,res));
  }
  return false;
}