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Proof step 3 from proof fits-in (previous step)

fits(r, sk ', st) ⊦ junkref(str, r, st), r -- sk ∈ st

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 2:
⊦ fits(r, sk ', st) ↔ r ≠ jvmref ∧ is_referencevalue(st[r -- sk]) ∧ (is_classtype(st[r -- _type] .type) → sk ∈ instfields(st[r -- _type] .type .class)) ∧ (is_arraytype(st[r -- _type] .type) → is_indexkey(sk) ∧ 0 ≤ sk .index ∧ sk .index < st[r -- _length] .intval)

Rule argument

[crewrite-arg: fits-storekeys-one, F, [st, sk, r] → [st, sk, r]]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ ¬ rk ∈ st → st[rk] = ∅[rk]], [CSIMPSEQ : ⊦ ∅[rk] = noval], [CSIMPSEQ : ⊦ ¬ is_referencevalue(noval)])], [EXTRATERMS : (st, sk, r)]]