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Proof step 14 from proof validval-putrkvs (previous step)

validvals(str, rkvs, st), validval(str, val, ty, st) ⊦ mkfs(class, ty, fieldvar) ' = _length, ty = void_type, okval(val, ty) ∧ (is_referencevalue(val) → validrefval(str, val, ty, st[rkvs]))

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 4:
⊦ validval(str, val, ty, st) ↔ okval(val, ty) ∧ (is_referencevalue(val) → validrefval(str, val, ty, st))
Proof step 13:
validvals(str, rkvs, st), okval(val, ty) ∧ (is_referencevalue(val) → validrefval(str, val, ty, st)) ⊦ mkfs(class, ty, fieldvar) ' = _length, ty = void_type, okval(val, ty) ∧ (is_referencevalue(val) → validrefval(str, val, ty, st[rkvs]))

Rule argument

[crewrite-arg: validval-def , F , [st, ty, val, str] → [st, ty, val, str] ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, ty, val, str)]]