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Proof step 14 from proof is_obj-field-norefval (previous step)

st[r -- _type] .type = mkclasstype(class), fs ' ∈ instfields(class), is_reftype(fs .type), is_obj(r, st), class+∃(str, class) ⊦ is_referencevalue(st[r -- fs ']), is_abstract(class)

Heuristic elimination applied rule insert elim lemma

And obtained the following new goals

Proof step 13:
fs = mkfs(class0, ty, fieldvar), st[r -- _type] .type = mkclasstype(class), fs ' ∈ instfields(class), is_reftype(ty), is_obj(r, st), class+∃(str, class) ⊦ is_referencevalue(st[r -- fs ']), is_abstract(class)

Rule argument

[speclemmaarg: , class = fs .class ∧ ty = fs .type ∧ fieldvar = fs .field ↔ fs = mkfs(class, ty, fieldvar) ,[fs, class, ty, fieldvar] → [fs, class0, ty, fieldvar] ,T ,fieldspec , ,elim ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPELIM : ⊦ class = fs .class ∧ ty = fs .type ∧ fieldvar = fs .field ↔ fs = mkfs(class, ty, fieldvar)])], [EXTRATERMS : (fs, class0, ty, fieldvar)]]