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Proof step 5 from proof validstatfields-put-statfield-03 (previous step)

mkfs(class, ty, fieldvar) ' ∈ sks, validstatfield(str, mkfs(class, ty, fieldvar) ', st), ¬ mkfs(class, ty, fieldvar) ' ∈ statfields(class) ∨ ¬ tdname∃(str, class) ⊦ ty = void_type, validstatfields(str, sks, st[jvmref -- mkfs(class, ty, fieldvar) ', val])

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 4:
⊦ validstatfield(str, sk, st) ↔ is_fskey(sk) ∧ sk ∈ statfields(sk .fs .class) ∧ tdname∃(str, sk .fs .class) ∧ (initdone(sk .fs .class, st) → validfield(str, jvmref, sk, st))

Rule argument

[crewrite-arg: validstatfield-storekey-def , F , [st, sk, str] → [st, mkfs(class, ty, fieldvar) ', str] ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ is_fskey(fs ')], [CSIMPSEQ : ⊦ fs ' .fs = fs], [CSIMPSEQ : ⊦ mkfs(class, ty, fieldvar) .class = class])], [EXTRATERMS : (st, mkfs(class, ty, fieldvar) ', str)]]