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Proof step 8 from proof is_array-init (previous step)

⊦ r = r0, is_arrayref(r, i, addarray(r0, ty0, vals, st)) ↔ is_arrayref(r, i, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ is_arrayref(r, i, st) ↔ (∀ j. 0 ≤ j ∧ j < i → r -- j ' ∈ st)
Proof step 7:
⊦ r = r0, (∀ j. 0 ≤ j ∧ j < i → r -- j ' ∈ addarray(r0, ty0, vals, st)) ↔ is_arrayref(r, i, st)

Rule argument

[speclemmaarg: ,is_arrayref(r, i, st) ↔ (∀ j. 0 ≤ j ∧ j < i → r -- j ' ∈ st) ,[st, i, r] → [addarray(r0, ty0, vals, st), i, r] ,F ,storearrays , ,is_arrayref ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (addarray(r0, ty0, vals, st), i, r)]]