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Proof step 22 from proof hasSharing-object-rec (previous step)

st[r -- sk] = refval(r0), is_classtype(st[r -- _type] .type), sk ∈ instfields(st[r -- _type] .type .class), hasSharing(r0, st) ⊦ r = jvmref, hasSharing(r, st)

Heuristic elimination applied rule insert elim lemma

And obtained the following new goals

Proof step 21:
st[r -- _type] .type = mkclasstype(class), st[r -- sk] = refval(r0), is_classtype(st[r -- _type] .type), sk ∈ instfields(class), hasSharing(r0, st) ⊦ r = jvmref, hasSharing(r, st)

Rule argument

[speclemmaarg: ,is_classtype(ty) → (class = ty .class ↔ ty = mkclasstype(class)) ,[ty, class] → [st[r -- _type] .type, class] ,T ,javatype , ,elim-02 ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPELIM : ⊦ is_classtype(ty) → ( class = ty .class ↔ ty = mkclasstype(class))])], [EXTRATERMS : (st[r -- _type] .type, class)]]