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Proof step 18 from proof compatval-addclass (previous step)

fis .keys = statfields(class), compat(str, val, ty, st), okfieldinits(class, fis) ⊦ compat(str, val, ty, addclass(class, fis, st))

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 16:
¬ ¬ is_referencevalue(val), fis .keys = statfields(class), compat(str, val, ty, st), okfieldinits(class, fis) ⊦ compat(str, val, ty, addclass(class, fis, st))
Proof step 17:
⊦ ¬ is_referencevalue(val) → (compat(str, val, ty, st) ↔ okval(val, ty))

Rule argument

[crewrite-arg: compatval-noref , F , [st, ty, val, str] → [addclass(class, fis, st), ty, val, str] ]

Additional information

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