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Proof step 2 from proof exactarray-null (previous step)

val .refval = jvmref, exactarray(val, ty, i, st) ⊦

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ exactarray(val, ty, i, st) ↔ exactreftype(val, mkarraytype(ty), st) ∧ val .refval ≠ jvmref ∧ (val .refval -- _length) × intval(i) ∈ st ∧ is_arrayref(val .refval, i, st)

Rule argument

[crewrite-arg: exactarray-01, F, [st, i, ty, val] → [st, i, ty, val]]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, i, ty, val)]]