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Proof step 66 from proof validval-put-any (previous step)

validval(str, rk, val, st), validval(str, val0, ty, st) ⊦ r -- _type = rk, mkfs(class, ty, fieldvar) ' = _length, ty = void_type, okval(val0, ty) ∧ (is_referencevalue(val0) → validrefval(str, val0, ty, st[rk, val]))

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 10:
⊦ validval(str, val, ty, st) ↔ okval(val, ty) ∧ (is_referencevalue(val) → validrefval(str, val, ty, st))
Proof step 65:
validval(str, rk, val, st), okval(val0, ty) ∧ (is_referencevalue(val0) → validrefval(str, val0, ty, st)) ⊦ r -- _type = rk, mkfs(class, ty, fieldvar) ' = _length, ty = void_type, okval(val0, ty) ∧ (is_referencevalue(val0) → validrefval(str, val0, ty, st[rk, val]))

Rule argument

[crewrite-arg: validval-def , F , [st, ty, val, str] → [st, ty, val0, str] ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, ty, val0, str)]]