At: P no dup send enabled 1 1
1. E: EventStruct
2. x: |E| List
3. y: |E| List
4. 
i,j:
||x||.
is-send(E)(x[i]) 
is-send(E)(x[j]) (x[j] =msg=(E) x[i]) loc(E)(x[i]) = loc(E)(x[j]) i = j
5. x@0: |E|
6. is-send(E)(x@0)
7. y = (x @ [x@0])
8. i: ||y||
9. j: ||y||
10. is-send(E)(y[i])
11. is-send(E)(y[j])
12. y[j] =msg=(E) y[i]
13. loc(E)(y[i]) = loc(E)(y[j])
14. ||y|| = ||x||+1
i = j
By: Decide (i = ||x||)
Generated subgoals:| 1 | 15. i = ||x||
i = j |
| 2 | 15. i = ||x||
i = j |
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