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Proof step 10 from proof validref-put-badclassfield (previous step)

is_classtype(st[r0 -- _type] .type), validref(str, r, ty, st) ⊦ fs ' = _type, fs ' ∈ instfields(st[r0 -- _type] .type .class), validref(str, r, ty, st[r0 -- fs ', val])

Heuristic elimination applied rule insert elim lemma

And obtained the following new goals

Proof step 9:
st[r0 -- _type] .type = mkclasstype(class), is_classtype(st[r0 -- _type] .type), validref(str, r, ty, st) ⊦ fs ' = _type, fs ' ∈ instfields(class), validref(str, r, ty, st[r0 -- fs ', val])

Rule argument

[speclemmaarg: ,is_classtype(ty) → (class = ty .class ↔ ty = mkclasstype(class)) ,[ty, class] → [st[r0 -- _type] .type, class] ,T ,javatype , ,elim-02 ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPELIM : ⊦ is_classtype(ty) → ( class = ty .class ↔ ty = mkclasstype(class))])], [EXTRATERMS : (st[r0 -- _type] .type, class)]]