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Proof step 21 from proof compatval-put (previous step)

compat(str, val, ty, st) ⊦ ty0 = void_type, compat(str, val, ty, st[r -- mkfs(class, ty0, fieldvar) ', val0])

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ ¬ is_referencevalue(val) → (compat(str, val, ty, st) ↔ okval(val, ty))
Proof step 19:
¬ ¬ is_referencevalue(val), compat(str, val, ty, st) ⊦ ty0 = void_type, compat(str, val, ty, st[r -- mkfs(class, ty0, fieldvar) ', val0])
Proof step 20:
⊦ ¬ is_referencevalue(val) → (compat(str, val, ty, st) ↔ okval(val, ty))

Rule argument

[crewrite-arg: compatval-noref , F , [st, ty, val, str] → [st[r -- mkfs(class, ty0, fieldvar) ', val0], ty, val, str] ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st[r -- mkfs(class, ty0, fieldvar) ', val0], ty, val, str)]]