Program: 37515
Project: 37515
Buggy source:
public void handle(byte[] byteBuff){
  boolean isImmediateReleaseConReadLock=true;
  List<RedisRequest> requests=null;
  RedisRequest firstRequest=null;
  try {
    requests=requestDecoder.decode(byteBuff);
    if (requests == null || requests.size() == 0) {
      return;
    }
    firstRequest=requests.get(0);
    if (requests.size() == 1) {
      byte[] cmd=firstRequest.getArgs()[0];
      int len=cmd.length;
      if (len == 4) {
        if ((cmd[0] == 'A' || cmd[0] == 'a') && (cmd[1] == 'U' || cmd[1] == 'u') && (cmd[2] == 'T' || cmd[2] == 't')&& (cmd[3] == 'H' || cmd[3] == 'h')) {
          if (firstRequest.getArgs().length < 2) {
            frontCon.write(ERR_NO_AUTH_NO_PASSWORD);
            return;
          }
          auth(firstRequest);
          return;
        }
 else         if ((cmd[0] == 'E' || cmd[0] == 'e') && (cmd[1] == 'C' || cmd[1] == 'c') && (cmd[2] == 'H' || cmd[2] == 'h')&& (cmd[3] == 'O' || cmd[3] == 'o')) {
          echo(firstRequest);
          return;
        }
 else         if ((cmd[0] == 'P' || cmd[0] == 'p') && (cmd[1] == 'I' || cmd[1] == 'i') && (cmd[2] == 'N' || cmd[2] == 'n')&& (cmd[3] == 'G' || cmd[3] == 'g')) {
          frontCon.write(PONG);
          return;
        }
 else         if ((cmd[0] == 'Q' || cmd[0] == 'q') && (cmd[1] == 'U' || cmd[1] == 'u') && (cmd[2] == 'I' || cmd[2] == 'i')&& (cmd[3] == 'T' || cmd[3] == 't')) {
          frontCon.write(OK);
          frontCon.close("String_Node_Str");
          return;
        }
      }
 else       if (len == 6) {
        if ((cmd[0] == 'S' || cmd[0] == 's') && (cmd[1] == 'E' || cmd[1] == 'e') && (cmd[2] == 'L' || cmd[2] == 'l')&& (cmd[3] == 'E' || cmd[3] == 'e')&& (cmd[4] == 'C' || cmd[4] == 'c')&& (cmd[5] == 'T' || cmd[5] == 't')) {
          frontCon.write(OK);
          return;
        }
      }
    }
    if (!frontCon.isAuthenticated()) {
      byte[] cmd=firstRequest.getArgs()[0];
      if (cmd.length == 4 && (cmd[0] == 'A' || cmd[0] == 'a') && (cmd[1] == 'U' || cmd[1] == 'u') && (cmd[2] == 'T' || cmd[2] == 't') && (cmd[3] == 'H' || cmd[3] == 'h')) {
        auth(firstRequest);
        requests.remove(0);
        if (requests.isEmpty()) {
          return;
        }
      }
 else {
        frontCon.write(ERR_NO_AUTH);
        return;
      }
    }
    try {
      if (frontCon.getUserCfg().isAdmin() && requests.size() == 1) {
        String cmd=new String(firstRequest.getArgs()[0]).toUpperCase();
        RedisRequestPolicy policy=CommandParse.getPolicy(cmd);
        if (policy.getCategory() == CommandParse.MANAGE_CMD) {
          byte[] buff=Manage.execute(firstRequest,frontCon);
          if (buff != null)           frontCon.write(buff);
          return;
        }
      }
      RouteResult routeResult=RouteService.route(requests,frontCon);
      if (routeResult == null) {
        frontCon.write("String_Node_Str".getBytes());
        return;
      }
      if (intercept(routeResult)) {
        return;
      }
      currentCommandHandler=this.getCommandHandler(routeResult.getRequestType());
      currentCommandHandler.handle(routeResult);
      if (routeResult.getRequestType() != RedisRequestType.DEFAULT) {
        isImmediateReleaseConReadLock=false;
      }
    }
 catch (    InvalidRequestExistsException e) {
      if (e.isIsfaultTolerant()) {
        if (requests.size() > 1) {
          frontCon.write(ERR_INVALID_COMMAND);
        }
 else {
          frontCon.write(OK);
        }
      }
 else {
        StringBuffer errCmdBuffer=new StringBuffer(50);
        errCmdBuffer.append("String_Node_Str");
        errCmdBuffer.append(e.getMessage());
        errCmdBuffer.append("String_Node_Str");
        byte[] ERR_INVALID_COMMAND=errCmdBuffer.toString().getBytes();
        frontCon.write(ERR_INVALID_COMMAND);
      }
      LOGGER.warn("String_Node_Str",this.frontCon,requests);
    }
catch (    FullRequestNoThroughtException e) {
      for (int i=0; i < e.getRequests().size(); i++) {
        RedisRequest request=e.getRequests().get(i);
        if (request == null) {
          continue;
        }
        String cmd=new String(request.getArgs()[0]).toUpperCase();
        if ("String_Node_Str".equals(cmd)) {
          auth(request);
        }
 else         if ("String_Node_Str".equals(cmd)) {
          echo(request);
        }
 else         if ("String_Node_Str".equals(cmd)) {
          select(request);
        }
 else         if ("String_Node_Str".equals(cmd)) {
          frontCon.write(PONG);
        }
 else         if ("String_Node_Str".equals(cmd)) {
          frontCon.write(OK);
          frontCon.close("String_Node_Str");
        }
      }
    }
catch (    PhysicalNodeUnavailableException e) {
      frontCon.write("String_Node_Str".getBytes());
    }
  }
 catch (  RedisRequestUnknowException e0) {
    frontCon.close("String_Node_Str");
  }
catch (  IOException e1) {
    String error="String_Node_Str" + e1.getMessage() + "String_Node_Str";
    frontCon.write(error.getBytes());
  }
 finally {
    if (isImmediateReleaseConReadLock)     frontCon.releaseLock();
  }
}

Fixed version (ground truth):
public void handle(byte[] byteBuff){
  boolean isImmediateReleaseConReadLock=true;
  List<RedisRequest> requests=null;
  RedisRequest firstRequest=null;
  try {
    requests=requestDecoder.decode(byteBuff);
    if (requests == null || requests.size() == 0) {
      return;
    }
    firstRequest=requests.get(0);
    if (requests.size() == 1) {
      byte[] cmd=firstRequest.getArgs()[0];
      int len=cmd.length;
      if (len == 4) {
        if ((cmd[0] == 'A' || cmd[0] == 'a') && (cmd[1] == 'U' || cmd[1] == 'u') && (cmd[2] == 'T' || cmd[2] == 't')&& (cmd[3] == 'H' || cmd[3] == 'h')) {
          if (firstRequest.getArgs().length < 2) {
            frontCon.write(ERR_NO_AUTH_NO_PASSWORD);
            return;
          }
          auth(firstRequest);
          return;
        }
 else         if ((cmd[0] == 'E' || cmd[0] == 'e') && (cmd[1] == 'C' || cmd[1] == 'c') && (cmd[2] == 'H' || cmd[2] == 'h')&& (cmd[3] == 'O' || cmd[3] == 'o')) {
          echo(firstRequest);
          return;
        }
 else         if ((cmd[0] == 'P' || cmd[0] == 'p') && (cmd[1] == 'I' || cmd[1] == 'i') && (cmd[2] == 'N' || cmd[2] == 'n')&& (cmd[3] == 'G' || cmd[3] == 'g')) {
          frontCon.write(PONG);
          return;
        }
 else         if ((cmd[0] == 'Q' || cmd[0] == 'q') && (cmd[1] == 'U' || cmd[1] == 'u') && (cmd[2] == 'I' || cmd[2] == 'i')&& (cmd[3] == 'T' || cmd[3] == 't')) {
          frontCon.write(OK);
          frontCon.close("String_Node_Str");
          return;
        }
      }
 else       if (len == 6) {
        if ((cmd[0] == 'S' || cmd[0] == 's') && (cmd[1] == 'E' || cmd[1] == 'e') && (cmd[2] == 'L' || cmd[2] == 'l')&& (cmd[3] == 'E' || cmd[3] == 'e')&& (cmd[4] == 'C' || cmd[4] == 'c')&& (cmd[5] == 'T' || cmd[5] == 't')) {
          frontCon.write(OK);
          return;
        }
      }
    }
    if (!frontCon.isAuthenticated()) {
      byte[] cmd=firstRequest.getArgs()[0];
      if (cmd.length == 4 && (cmd[0] == 'A' || cmd[0] == 'a') && (cmd[1] == 'U' || cmd[1] == 'u') && (cmd[2] == 'T' || cmd[2] == 't') && (cmd[3] == 'H' || cmd[3] == 'h')) {
        boolean isPass=auth(firstRequest);
        if (isPass) {
          requests.remove(0);
          if (requests.isEmpty()) {
            return;
          }
        }
 else {
          return;
        }
      }
 else {
        frontCon.write(ERR_NO_AUTH);
        return;
      }
    }
    try {
      if (frontCon.getUserCfg().isAdmin() && requests.size() == 1) {
        String cmd=new String(firstRequest.getArgs()[0]).toUpperCase();
        RedisRequestPolicy policy=CommandParse.getPolicy(cmd);
        if (policy.getCategory() == CommandParse.MANAGE_CMD) {
          byte[] buff=Manage.execute(firstRequest,frontCon);
          if (buff != null)           frontCon.write(buff);
          return;
        }
      }
      RouteResult routeResult=RouteService.route(requests,frontCon);
      if (routeResult == null) {
        frontCon.write("String_Node_Str".getBytes());
        return;
      }
      if (intercept(routeResult)) {
        return;
      }
      currentCommandHandler=this.getCommandHandler(routeResult.getRequestType());
      currentCommandHandler.handle(routeResult);
      if (routeResult.getRequestType() != RedisRequestType.DEFAULT) {
        isImmediateReleaseConReadLock=false;
      }
    }
 catch (    InvalidRequestExistsException e) {
      if (e.isIsfaultTolerant()) {
        if (requests.size() > 1) {
          frontCon.write(ERR_INVALID_COMMAND);
        }
 else {
          frontCon.write(OK);
        }
      }
 else {
        StringBuffer errCmdBuffer=new StringBuffer(50);
        errCmdBuffer.append("String_Node_Str");
        errCmdBuffer.append(e.getMessage());
        errCmdBuffer.append("String_Node_Str");
        byte[] ERR_INVALID_COMMAND=errCmdBuffer.toString().getBytes();
        frontCon.write(ERR_INVALID_COMMAND);
      }
      LOGGER.warn("String_Node_Str",this.frontCon,requests);
    }
catch (    FullRequestNoThroughtException e) {
      for (int i=0; i < e.getRequests().size(); i++) {
        RedisRequest request=e.getRequests().get(i);
        if (request == null) {
          continue;
        }
        String cmd=new String(request.getArgs()[0]).toUpperCase();
        if ("String_Node_Str".equals(cmd)) {
          auth(request);
        }
 else         if ("String_Node_Str".equals(cmd)) {
          echo(request);
        }
 else         if ("String_Node_Str".equals(cmd)) {
          select(request);
        }
 else         if ("String_Node_Str".equals(cmd)) {
          frontCon.write(PONG);
        }
 else         if ("String_Node_Str".equals(cmd)) {
          frontCon.write(OK);
          frontCon.close("String_Node_Str");
        }
      }
    }
catch (    PhysicalNodeUnavailableException e) {
      frontCon.write("String_Node_Str".getBytes());
    }
  }
 catch (  RedisRequestUnknowException e0) {
    frontCon.close("String_Node_Str");
  }
catch (  IOException e1) {
    String error="String_Node_Str" + e1.getMessage() + "String_Node_Str";
    frontCon.write(error.getBytes());
  }
 finally {
    if (isImmediateReleaseConReadLock)     frontCon.releaseLock();
  }
}