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Proof step 5 from proof putbar-classfield-onlymod (previous step)

is_indexkey(sk), st[r -- _type] .type = mkclasstype(class), st[r -- sk] = refval(r1), okbytearray(r1, st), sk ∈ instfields(class) ⊦ st[r1 -- sk0] = (putByteArray(bytes, r1, st)[r1 -- sk0]), r = r1, r = jvmref, junkref(str, r, st), ∃ refs. refs ≠ [] ∧ refs .first = r ∧ refs .last = r1 ∧ validrefs(str, refs, st[refs .first -- _type] .type, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Rule argument

[speclemmaarg: ,is_indexkey(sk) ↔ (∃ i. sk = i ') ,[sk] → [sk] ,F ,storekey , ,ex-04 ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ ¬ i ' ∈ instfields(class)])], [EXTRATERMS : (sk)]]