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Proof step 11 from proof okarrays-put-02 (previous step)

is_fskey(sk) ⊦ sk = _type, sk = _length, okarrays(r, fis, st[r0 -- sk, val]) ↔ okarrays(r, fis, st), sk ∈ fis

User applied rule structural induction

And obtained the following new goals

Proof step 1:
⊦ okarrays(r, [], st)
Proof step 10:
∀ sk, r, st, r0, val. is_fskey(sk) → sk = _type ∨ sk = _length ∨ (okarrays(r, fis0, st[r0 -- sk, val]) ↔ okarrays(r, fis0, st)) ∨ sk ∈ fis0, is_fskey(sk) ⊦ sk = _type, sk = _length, okarrays(r, fv + fis0, st[r0 -- sk, val]) ↔ okarrays(r, fv + fis0, st), sk ∈ fv + fis0

Rule argument

[VARWITHVARSEQSARG : fis, ()]

Additional information

[[CONCRETESIMPRULES : ([CSIMPGEN : fieldinits generated by [], +;])]]