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Proof step 7 from proof validref-addarray (previous step)

⊦ r1 = r0, is_valid_ref(r1, addarray(r0, ty, vals, st)) ↔ is_valid_ref(r1, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ is_valid_ref(r, st) ↔ is_obj(r, st) ∨ is_array(r, st)
Proof step 6:
⊦ r1 = r0, is_obj(r1, addarray(r0, ty, vals, st)) ∨ is_array(r1, addarray(r0, ty, vals, st)) ↔ is_valid_ref(r1, st)

Rule argument

[speclemmaarg: ,is_valid_ref(r, st) ↔ is_obj(r, st) ∨ is_array(r, st) ,[st, r] → [addarray(r0, ty, vals, st), r1] ,F ,addfuns , ,is-valid-ref ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (addarray(r0, ty, vals, st), r1)]]