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

is_array(jvmref, st) ⊦

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ is_array(r, st) ↔ r ≠ jvmref ∧ r -- _type ∈ st ∧ is_typevalue(st[r -- _type]) ∧ is_arraytype(st[r -- _type] .type) ∧ okarray(r, st[r -- _type] .type .type, st)

Rule argument

[crewrite-arg: is-any-array, F, [st, r] → [st, jvmref]]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, jvmref)]]