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Proof step 75 from proof putarray-addarray-one (previous step)

is_reftype(ty), is_indexkey(sk) ⊦ sk = _type, sk = _length, r -- sk ∈ addarray(r, ty, n→i(# vals) + 1, st) ∨ 0 < sk .index ∧ sk .index ≤ n→i(# vals) ↔ r -- sk ∈ addarray(r, ty, refval(jvmref) ' + vals, st)

Heuristic elimination applied rule insert elim lemma

And obtained the following new goals

Proof step 74:
sk = i ', is_reftype(ty), is_indexkey(sk) ⊦ sk = _type, sk = _length, r -- sk ∈ addarray(r, ty, n→i(# vals) + 1, st) ∨ 0 < i ∧ i ≤ n→i(# vals) ↔ r -- sk ∈ addarray(r, ty, refval(jvmref) ' + vals, st)

Rule argument

[speclemmaarg: ,is_indexkey(sk) → (i = sk .index ↔ sk = i ') ,[sk, i] → [sk, i] ,T ,storekey , ,elim-04 ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPELIM : ⊦ is_indexkey(sk) → (i = sk .index ↔ sk = i ')])], [EXTRATERMS : (sk, i)]]