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Proof step 10 from proof fits-put-03 (previous step)

fits(r1, fs ' ' + sks0, st), is_bytevalue(st[r1 -- fs ']), ∀ st, r1, fs, r, by, str. is_bytevalue(st[r1 -- fs ']) ∧ fits(r, sks0, st) → (st[r1 -- fs ', byteval(by)][r -- sks0]) = st[r -- sks0] ∨ junkref(str, r, st) ⊦ sks0 = [], (st[r1 -- fs ', byteval(by)][byteval(by) .refval -- sks0]) = st[st[r1 -- fs '] .refval -- sks0], junkref(str, r1, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 9:
⊦ fits(r, sk ' + sks, 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) ∧ fits(st[r -- sk] .refval, sks, st)

Rule argument

[crewrite-arg: fits-storekeys-rec , F , [st, sks, sk, r] → [st, sks0, fs ', r1] ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ is_bytevalue(val) → ¬ is_referencevalue(val)])], [EXTRATERMS : (st, sks0, fs ', r1)]]