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Proof step 10 from proof junkref-class-02 (previous step)

st[r -- mkfs(class, ty, fieldvar) '] = refval(r0), class+∃(str, st[r -- _type] .type .class), r -- _type ∈ st, is_typevalue(st[r -- _type]), is_classtype(st[r -- _type] .type), goodfieldsandtypes(r, instfields(st[r -- _type] .type .class), st), mkfs(class, ty, fieldvar) ' ∈ instfields(st[r -- _type] .type .class), r ∈ st ⊦ r0 = jvmref, r = jvmref, is_reftype(ty), is_abstract(st[r -- _type] .type .class)

Heuristic elimination applied rule insert elim lemma

And obtained the following new goals

Proof step 9:
st[r -- _type] .type = mkclasstype(class0), st[r -- mkfs(class, ty, fieldvar) '] = refval(r0), class+∃(str, class0), r -- _type ∈ st, is_typevalue(st[r -- _type]), is_classtype(st[r -- _type] .type), goodfieldsandtypes(r, instfields(class0), st), mkfs(class, ty, fieldvar) ' ∈ instfields(class0), r ∈ st ⊦ r0 = jvmref, r = jvmref, is_reftype(ty), is_abstract(class0)

Rule argument

[speclemmaarg: ,is_classtype(ty) → (class = ty .class ↔ ty = mkclasstype(class)) ,[ty, class] → [st[r -- _type] .type, class0] ,T ,javatype , ,elim-02 ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPELIM : ⊦ is_classtype(ty) → ( class = ty .class ↔ ty = mkclasstype(class))])], [EXTRATERMS : (st[r -- _type] .type, class0)]]