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Proof step 4 from proof junkrefs-put-norefval (previous step)

junkrefs(str, refs, ty, st[r1 -- fs ', val]), okval(val, fs .type) ⊦ fs ' = _length, fs .type = void_type, junkrefs(str, refs, ty, st), is_referencevalue(val)

Heuristic elimination applied rule insert elim lemma

And obtained the following new goals

Proof step 3:
fs = mkfs(class, ty0, fieldvar), junkrefs(str, refs, ty, st[r1 -- fs ', val]), okval(val, ty0) ⊦ fs ' = _length, ty0 = void_type, junkrefs(str, refs, ty, st), is_referencevalue(val)

Rule argument

[speclemmaarg: , class = fs .class ∧ ty = fs .type ∧ fieldvar = fs .field ↔ fs = mkfs(class, ty, fieldvar) ,[fs, class, ty, fieldvar] → [fs, class, ty0, fieldvar] ,T ,fieldspec , ,elim ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPELIM : ⊦ class = fs .class ∧ ty = fs .type ∧ fieldvar = fs .field ↔ fs = mkfs(class, ty, fieldvar)])], [EXTRATERMS : (fs, class, ty0, fieldvar)]]