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Proof step 4 from proof validrefnotnull-primarray (previous step)

is_primtype(ty), okarray(r, ty, st), r ∈ st ⊦ r = jvmref, validref(str, r, mkarraytype(ty), st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 3:
⊦ is_primtype(ty) → (validref(str, r, mkarraytype(ty), st) ↔ r = jvmref ∨ okarray(r, ty, st))

Rule argument

[crewrite-arg: validref-primarray , F , [st, ty, r, str] → [st, ty, r, str] ]

Additional information

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