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Proof step 21 from proof okarrays-put (previous step)

oktype(val, sk .fs .type, st), goodfieldandtype(r0, sk, st) ⊦ sk = _type, sk = _length, okarrays(r, fis, st[r0 -- sk, val]) ↔ okarrays(r, fis, st), sk ∈ fis

Heuristic elimination applied rule insert elim lemma

And obtained the following new goals

Proof step 20:
sk .fs = mkfs(class, ty, fieldvar), oktype(val, ty, st), goodfieldandtype(r0, sk, st) ⊦ sk = _type, sk = _length, okarrays(r, fis, st[r0 -- sk, val]) ↔ okarrays(r, fis, st), sk ∈ fis

Rule argument

[speclemmaarg: , class = fs .class ∧ ty = fs .type ∧ fieldvar = fs .field ↔ fs = mkfs(class, ty, fieldvar) ,[fs, class, ty, fieldvar] → [sk .fs, class, ty, fieldvar] ,T ,fieldspec , ,elim ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPELIM : ⊦ class = fs .class ∧ ty = fs .type ∧ fieldvar = fs .field ↔ fs = mkfs(class, ty, fieldvar)])], [EXTRATERMS : (sk .fs, class, ty, fieldvar)]]