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Proof step 8 from proof validref-put-01 (previous step)

r0 = jvmref ∨ ¬ r0 -- _type ∈ st ∨ ¬ is_typevalue(st[r0 -- _type]) ∨ ¬ is_classtype(st[r0 -- _type] .type) ∨ ¬ is_obj(r0, st[r0 -- _type] .type .class, st) ⊦ r = r0, r0 ≠ jvmref ∧ r0 -- _type ∈ st ∧ is_typevalue(st[r0 -- _type]) ∧ is_arraytype(st[r0 -- _type] .type) ∧ okarray(r0, st[r0 -- _type] .type .type, st) ↔ is_array(r0, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Rule argument

[speclemmaarg: , 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) ,[st, r] → [st, r0] ,F ,okfuns , ,is-any-array ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, r0)]]