At: nd ext valcom 1 1 2 1 1 1 1 1 1 1 1 5 1 5 1 1
1. Alph: Type
2. St: Type
3. NDA: NDA(Alph;St)
4. C: (St
Alph*)*
5. ||C|| > 0
6.
i:
(||C||-1). ||2of(C[i])|| > 0
7. q: St
8. a: Alph
9. p: St
10. NDA(C)
q
11.
NDA(q,a,p)
12. i: 
13. 0
i
14. i < ||map(
c. < 1of(c),a.2of(c) > ;C)||+1-1
15. i = ||C||-1
16. i+1-||map(
c. < 1of(c),a.2of(c) > ;C)|| = 0
1
17. z: 
18. 0
z < 1
19. [ < p,nil > ][z] = < p,nil >
St
Alph*
1of([ < p,nil > ][z])
St
By: Analyze 19
Generated subgoals:None
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