PPOS: system initializing
PPOS: system ready (uptime 0 ms)
    0 ms: user_main (id 1): inicio
	ping: inicio
	ping: 0
		pong: inicio
		pong: 0
	ping: 1
		pong: 1
	ping: 2
		pong: 2
	ping: 3
		pong: 3
	ping: fim
		pong: fim
    0 ms: user_main fim
PPOS: system terminating
PPOS: system terminated (uptime 0 ms)
