correct                                                                                                                                                                                                                                                        
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                  Incorrect                                                                                
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                 log attempt                                                                                                                                                               
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                             attempt_count++                                                                                                                                                                                               
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                 attempt_count > 4                                                                                                                                                       no
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                  yes                                                                                      
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                increase delay timer                                                                                                                                                                       
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                                                                                           
                                                                    wait for timer to expire                                                                                                                                                                                                                                               
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                      log request                                                                                                                                          
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                                                                                                                                                                                                           
                                                                                                                                                            disable service