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Proof step 12 from proof validref-put-samefield-01 (previous step)

oktype(val, fs .type, st), is_valid_ref(r, st) ⊦ fs ' = _length, fs ' = _type, is_valid_ref(r, st[r -- fs ', val])

Heuristic elimination applied rule insert elim lemma

And obtained the following new goals

Proof step 11:
fs = mkfs(class, ty, fieldvar), oktype(val, ty, st), is_valid_ref(r, st) ⊦ fs ' = _length, fs ' = _type, is_valid_ref(r, st[r -- fs ', val])

Rule argument

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