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Proof step 2 from proof validrefval-ref (conclusion)

⊦ validrefval(str, refval(r), ty, st) ↔ validref(str, r, ty, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ validrefval(str, val, ty, st) ↔ is_referencevalue(val) ∧ validref(str, val .refval, ty, st)

Rule argument

[crewrite-arg: validrefval-def , F , [st, ty, val, str] → [st, ty, refval(r), str] ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ is_referencevalue(refval(r))], [CSIMPSEQ : ⊦ refval(r) .refval = r])], [EXTRATERMS : (st, ty, refval(r), str)]]