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Proof step 64 from proof validval-put-any (previous step)

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

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 11:
⊦ validrefval(str, val, ty, st) ↔ is_referencevalue(val) ∧ validref(str, val .refval, ty, st)
Proof step 63:
is_referencevalue(val0), validval(str, rk, val, st), is_reftype(ty), validrefval(str, val0, ty, st) ⊦ r -- _type = rk, mkfs(class, ty, fieldvar) ' = _length, ty = void_type, is_referencevalue(val0) ∧ validref(str, val0 .refval, ty, st[rk, val])

Rule argument

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

Additional information

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