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Proof step 5 from proof validrefnotnull-put-byteval (previous step)

validref(str, r0, ty, st), is_bytevalue(st[r -- mkfs(class, byte_type, fieldvar) ']) ⊦ r0 = jvmref, r = jvmref, mkfs(class, byte_type, fieldvar) ' = _length, validref(str, r0, ty, st[r -- mkfs(class, byte_type, fieldvar) ', byteval(by)])

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 4:
⊦ r ≠ jvmref ∧ sk ≠ _length ∧ sk ≠ _type ∧ sk .fs .type = byte_type ∧ ¬ is_indexkey(sk) ∧ is_bytevalue(st[r -- sk]) ∧ validref(str, r0, ty, st) → validref(str, r0, ty, st[r -- sk, byteval(by)])

Rule argument

[crewrite-arg: validref-put-byteval , F , [by, sk, r, st, ty, r0, str] → [by, mkfs(class, byte_type, fieldvar) ', r, st, ty, r0, str] ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ mkfs(class1, byte_type, fieldvar) ' ≠ _type], [CSIMPSEQ : ⊦ fs ' .fs = fs], [CSIMPSEQ : ⊦ mkfs(class, ty, fieldvar) .type = ty], [CSIMPSEQ : ⊦ ¬ is_indexkey(fs ')])], [EXTRATERMS : (by, mkfs(class, byte_type, fieldvar) ', r, st, ty, r0, str)]]