At: P causal switchable0 6 1 1 1 1 1
1. E: EventStruct
2. x: |E| List
3. y: |E| List
4. 
i:
||x||. 
j:||x||. j
i & is-send(E)(x[j]) & (x[j] =msg=(E) x[i])
5. i1: (||x||-1)
6. 
is-send(E)(x[i1]) & is-send(E)(x[(i1+1)]) 
is-send(E)(x[i1]) & is-send(E)(x[(i1+1)])
7. y = swap(x;i1;i1+1)
8. i: ||y||
9. ||swap(x;i1;i1+1)|| = ||x|| 
10. ||y|| = ||x||
11. ||swap(y;i1;i1+1)|| = ||y||
12. (i1, i1+1) ||x||
||x||
13. j: ||x||
14. is-send(E)(x[j])
15. x[j] =msg=(E) x[((i1, i1+1)(i))]
16. i = i1
17. ji1+1
18. j = i1
19. x,y:. x = y 
(x ~ y)
(i1, i1+1)(i1) = i1+1
By:
Unfold `flip` 0
THEN
Reduce 0
THEN
SplitOnConclITE
Generated subgoals:None
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