During 0-1 each task completes its initiate.

During 1-2
   Task 1 completes its request (i.e. the request is granted)
   Task 2 completes its request (i.e. the request is granted)
   Task 3 completes its request (i.e. the request is granted)

During 2-3
   Task 1's request cannot be granted
   Task 2's request cannot be granted
   Task 3's request cannot be granted

According to the spec, tasks 1 and 2 are aborted now and their
resources are available next cycle (3-4).

During 3-4
   Task 3's pending request is granted

During 4-5
   Task 3 releases and is finished (at 5)