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Proof step 10 from proof fits-in (previous step)

is_indexkey(sk), st[r -- _type] .type = mkclasstype(class), st[r -- sk] = refval(r1), junkref(str, r1, st), is_obj(str, r, st), r ∈ st, r -- sk ∈ st, fits(r1, sks0, st), sk ∈ instfields(class), ∀ str0, r0, st0. ¬ junkref(str0, r0, st0) ∧ fits(r0, sks0, st0) → r0 -- sks0 ∈ st0 ⊦ r = jvmref, sks0 = [], r1 -- sks0 ∈ st, ∃ fs. fs ' ∈ instfields(class) ∧ is_referencevalue(st[r -- fs ']) ∧ st[r -- fs '] .refval ≠ jvmref ∧ (¬ st[st[r -- fs '] .refval -- _type] .type ≤ fs .type ∨ junkref(str, st[r -- fs '] .refval, 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)]]