Program: 79759
Project: 79759
Buggy source:
@Override public void startAuthenticator(String address,AuthenticatorConfig c) throws Exception {
  String identityURL=c.getIdpUrl();
  String idp_userName=c.getIdpUsername();
  String idp_password=c.getIdpPassword();
  String app_key=c.getAppKey();
  String app_secret=c.getAppSecret();
  MessageConsumer<JsonObject> consumer=vertx.eventBus().consumer(address,(  Message<JsonObject> msg) -> {
    JsonObject oauth2_token=msg.body();
    String username=oauth2_token.getString("String_Node_Str");
    String password=oauth2_token.getString("String_Node_Str");
    try {
      HttpClientOptions opt=new HttpClientOptions();
      HttpClient httpClient=vertx.createHttpClient(opt);
      URL url=new URL(identityURL);
      String uri=url.getPath() + "String_Node_Str" + username;
      HttpClientRequest validateReq=httpClient.get(url.getPort(),url.getHost(),uri,resp -> {
        resp.exceptionHandler(e -> {
          logger.fatal(e.getMessage(),e);
          AuthorizationClient.ValidationInfo vi=new AuthorizationClient.ValidationInfo();
          vi.auth_valid=false;
          vi.authorized_user="String_Node_Str";
          vi.error_msg=e.getMessage();
          msg.reply(vi.toJson());
        }
);
        resp.bodyHandler(totalBuffer -> {
          String jsonResponse=totalBuffer.toString("String_Node_Str");
          logger.info(jsonResponse);
          JsonObject j=new JsonObject(jsonResponse);
          String token=j.getString("String_Node_Str");
          String refreshToken=j.getString("String_Node_Str");
          String expiresIn=j.getString("String_Node_Str");
          String type=j.getString("String_Node_Str");
          String scope=j.getString("String_Node_Str");
          boolean valid=j.getBoolean("String_Node_Str",false);
          String clientId=j.getString("String_Node_Str");
          String codeId=j.getString("String_Node_Str");
          String userId=j.getString("String_Node_Str");
          Long created=j.getLong("String_Node_Str");
          String refreshExpiresIn=j.getString("String_Node_Str");
          AuthorizationClient.ValidationInfo vi=new AuthorizationClient.ValidationInfo();
          vi.auth_valid=valid;
          vi.authorized_user=userId;
          vi.error_msg="String_Node_Str";
          JsonObject json=new JsonObject();
          json=vi.toJson();
          json.put("String_Node_Str",scope);
          json.put("String_Node_Str",expiresIn);
          msg.reply(json);
        }
);
      }
);
      HttpClientRequest loginReq=httpClient.post(url.getPort(),url.getHost(),url.getPath(),resp -> {
        resp.exceptionHandler(e -> {
          logger.fatal(e.getMessage(),e);
          AuthorizationClient.ValidationInfo vi=new AuthorizationClient.ValidationInfo();
          vi.auth_valid=false;
          vi.authorized_user="String_Node_Str";
          vi.error_msg=e.getMessage();
          msg.reply(vi.toJson());
        }
);
        resp.bodyHandler(totalBuffer -> {
          String jsonResponse=totalBuffer.toString("String_Node_Str");
          logger.info(jsonResponse);
          JsonObject j=new JsonObject(jsonResponse);
          String new_access_token=j.getString("String_Node_Str");
          String new_refresh_token=j.getString("String_Node_Str");
          String token_type=j.getString("String_Node_Str");
          String expires_in=j.getString("String_Node_Str");
          String scope=j.getString("String_Node_Str");
          String refresh_expires_in=j.getString("String_Node_Str");
          String error=j.getString("String_Node_Str");
          AuthorizationClient.ValidationInfo vi=new AuthorizationClient.ValidationInfo();
          if (new_access_token != null && new_access_token.trim().length() > 0) {
            vi.auth_valid=true;
            vi.authorized_user=username;
          }
 else {
            vi.auth_valid=false;
            vi.error_msg=error;
          }
          JsonObject json=new JsonObject();
          json=vi.toJson();
          json.put("String_Node_Str",scope);
          json.put("String_Node_Str",expires_in);
          msg.reply(json);
        }
);
      }
);
      if (username.contains("String_Node_Str")) {
        String data="String_Node_Str" + username + "String_Node_Str"+ password+ "String_Node_Str"+ app_key+ "String_Node_Str"+ app_secret+ "String_Node_Str";
        loginReq.putHeader("String_Node_Str","String_Node_Str");
        loginReq.putHeader("String_Node_Str","String_Node_Str");
        loginReq.end(data,"String_Node_Str");
      }
 else {
        validateReq.end();
      }
    }
 catch (    Throwable e) {
      logger.fatal(e.getMessage(),e);
      AuthorizationClient.ValidationInfo vi=new AuthorizationClient.ValidationInfo();
      vi.auth_valid=false;
      vi.authorized_user="String_Node_Str";
      vi.error_msg=e.getMessage();
      msg.reply(vi.toJson());
    }
  }
);
  logger.info("String_Node_Str" + consumer.address());
}

Fixed version (ground truth):
@Override public void startAuthenticator(String address,AuthenticatorConfig c) throws Exception {
  String identityURL=c.getIdpUrl();
  String idp_userName=c.getIdpUsername();
  String idp_password=c.getIdpPassword();
  String app_key=c.getAppKey();
  String app_secret=c.getAppSecret();
  MessageConsumer<JsonObject> consumer=vertx.eventBus().consumer(address,(  Message<JsonObject> msg) -> {
    JsonObject oauth2_token=msg.body();
    String username=oauth2_token.getString("String_Node_Str");
    String password=oauth2_token.getString("String_Node_Str");
    try {
      HttpClientOptions opt=new HttpClientOptions();
      HttpClient httpClient=vertx.createHttpClient(opt);
      URL url=new URL(identityURL);
      String uri=url.getPath() + "String_Node_Str" + username;
      HttpClientRequest validateReq=httpClient.get(url.getPort(),url.getHost(),uri,resp -> {
        resp.exceptionHandler(e -> {
          logger.fatal(e.getMessage(),e);
          AuthorizationClient.ValidationInfo vi=new AuthorizationClient.ValidationInfo();
          vi.auth_valid=false;
          vi.authorized_user="String_Node_Str";
          vi.error_msg=e.getMessage();
          msg.reply(vi.toJson());
        }
);
        resp.bodyHandler(totalBuffer -> {
          String jsonResponse=totalBuffer.toString("String_Node_Str");
          logger.info(jsonResponse);
          JsonObject j=new JsonObject(jsonResponse);
          String token=j.getString("String_Node_Str");
          String refreshToken=j.getString("String_Node_Str");
          String expiresIn=j.getString("String_Node_Str");
          String type=j.getString("String_Node_Str");
          String scope=j.getString("String_Node_Str");
          boolean valid=j.getBoolean("String_Node_Str",false);
          String clientId=j.getString("String_Node_Str");
          String codeId=j.getString("String_Node_Str");
          String userId=j.getString("String_Node_Str");
          Long created=j.getLong("String_Node_Str");
          String refreshExpiresIn=j.getString("String_Node_Str");
          AuthorizationClient.ValidationInfo vi=new AuthorizationClient.ValidationInfo();
          vi.auth_valid=valid;
          vi.authorized_user=userId;
          vi.error_msg="String_Node_Str";
          JsonObject json=new JsonObject();
          json=vi.toJson();
          json.put("String_Node_Str",scope);
          json.put("String_Node_Str",expiresIn);
          msg.reply(json);
        }
);
      }
);
      HttpClientRequest loginReq=httpClient.post(url.getPort(),url.getHost(),url.getPath(),resp -> {
        resp.exceptionHandler(e -> {
          logger.fatal(e.getMessage(),e);
          AuthorizationClient.ValidationInfo vi=new AuthorizationClient.ValidationInfo();
          vi.auth_valid=false;
          vi.authorized_user="String_Node_Str";
          vi.error_msg=e.getMessage();
          msg.reply(vi.toJson());
        }
);
        resp.bodyHandler(totalBuffer -> {
          String jsonResponse=totalBuffer.toString("String_Node_Str");
          logger.info(jsonResponse);
          JsonObject j=new JsonObject(jsonResponse);
          String new_access_token=j.getString("String_Node_Str");
          String new_refresh_token=j.getString("String_Node_Str");
          String token_type=j.getString("String_Node_Str");
          String expires_in=j.getString("String_Node_Str");
          String scope=j.getString("String_Node_Str");
          String refresh_expires_in=j.getString("String_Node_Str");
          String error=j.getString("String_Node_Str");
          AuthorizationClient.ValidationInfo vi=new AuthorizationClient.ValidationInfo();
          if (new_access_token != null && new_access_token.trim().length() > 0) {
            vi.auth_valid=true;
            vi.authorized_user=username;
          }
 else {
            vi.auth_valid=false;
            vi.error_msg=error;
          }
          JsonObject json=new JsonObject();
          json=vi.toJson();
          json.put("String_Node_Str",scope);
          json.put("String_Node_Str",expires_in);
          msg.reply(json);
        }
);
      }
);
      if (username.contains("String_Node_Str")) {
        String data="String_Node_Str" + username + "String_Node_Str"+ password+ "String_Node_Str"+ app_key+ "String_Node_Str"+ app_secret+ "String_Node_Str";
        loginReq.putHeader("String_Node_Str","String_Node_Str");
        loginReq.end(data,"String_Node_Str");
      }
 else {
        validateReq.end();
      }
    }
 catch (    Throwable e) {
      logger.fatal(e.getMessage(),e);
      AuthorizationClient.ValidationInfo vi=new AuthorizationClient.ValidationInfo();
      vi.auth_valid=false;
      vi.authorized_user="String_Node_Str";
      vi.error_msg=e.getMessage();
      msg.reply(vi.toJson());
    }
  }
);
  logger.info("String_Node_Str" + consumer.address());
}