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Proof step 26 from proof fits-subset (previous step)

st[r -- sk] = refval(r0), r -- _type ∈ st0, is_obj(str, r, st0), st0 ⊆ st, fits(r0, sks0, st), is_classtype(st0[r -- _type] .type), sk ∈ instfields(st0[r -- _type] .type .class), r ∈ st0, ∀ st0, st, r, str. st0 ⊆ st ∧ fits(r, sks0, st) → junkref(str, r, st0) ∨ fits(r, sks0, st0) ⊦ r = jvmref, junkref(str, r, st0), is_referencevalue(st0[r -- sk]) ∧ fits(st0[r -- sk] .refval, sks0, st0)

Heuristic elimination applied rule insert elim lemma

And obtained the following new goals

Proof step 25:
st0[r -- _type] .type = mkclasstype(class), st[r -- sk] = refval(r0), r -- _type ∈ st0, is_obj(str, r, st0), st0 ⊆ st, fits(r0, sks0, st), is_classtype(st0[r -- _type] .type), sk ∈ instfields(class), r ∈ st0, ∀ st0, st, r, str. st0 ⊆ st ∧ fits(r, sks0, st) → junkref(str, r, st0) ∨ fits(r, sks0, st0) ⊦ r = jvmref, junkref(str, r, st0), is_referencevalue(st0[r -- sk]) ∧ fits(st0[r -- sk] .refval, sks0, st0)

Rule argument

[speclemmaarg: ,is_classtype(ty) → (class = ty .class ↔ ty = mkclasstype(class)) ,[ty, class] → [st0[r -- _type] .type, class] ,T ,javatype , ,elim-02 ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPELIM : ⊦ is_classtype(ty) → ( class = ty .class ↔ ty = mkclasstype(class))])], [EXTRATERMS : (st0[r -- _type] .type, class)]]