Symfony会话时间

I have project Symfony 2.6.11 and after authentication some time I have error after I must authentication again and I want some information like 'You session end, authentication again' or where I see actual time for authentication and how change this time ?

Have you tried to change the session settings? :

framework:
    session:
            cookie_lifetime: 60 #60 seconds
            gc_maxlifetime: 50 #50 seconds - only needed for testing. Dont use this in a production environment
            gc_probability: 1 #only needed for testing. Dont use this in a production environment
            gc_divisor: 1 #only needed for testing. Dont use this in a production environment

You can see the config over here: https://codedump.io/share/9eVPS5otSIuk