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Proof step 3 from proof validstatfield-index (previous step)

validstatfield(str, i ', st) ⊦

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 2:
⊦ 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, i ', str] ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ ¬ is_fskey(i ')])], [EXTRATERMS : (st, i ', str)]]