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Proof step 4 from proof exactarray-intval-01 (previous step)

exactarray(r, ty, st), r ∈ st ⊦ r = jvmref, intval(0) = st[r -- _length], is_integervalue(st[r -- _length])

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 3:
⊦ exactarray(r, ty, st) ↔ exactreftype(refval(r), mkarraytype(ty), st) ∧ r ≠ jvmref ∧ r -- _length ∈ st ∧ is_integervalue(st[r -- _length]) ∧ 0 ≤ st[r -- _length] .intval ∧ is_arrayref(r, st[r -- _length] .intval, st)

Rule argument

[crewrite-arg: exactarray-02, F, [st, ty, r] → [st, ty, r]]

Additional information

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