Mulai: task1 -> running (PID: 1905791)
Mulai: task2 -> running (PID: 1905793)
Selesai: task1 -> done (PID: 1905791)
Mulai: task1.1 -> running (PID: )
Selesai: task1.1 -> done (PID: )
Selesai: task2 -> done (PID: 1905793)
Mulai: task2.2 -> running (PID: 1905797)
Selesai: task2.2 -> done (PID: 1905797)
Mulai: task2.3 -> running (PID: )
Selesai: task2.3 -> done (PID: )