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Proof step 7 from proof unchNorec-isvalidref (previous step)

unchangedNorec(r, st, st0), is_valid_ref(str, r, st) ⊦ is_valid_ref(str, r, st0)

User applied rule insert rewrite lemma

And obtained the following new goals

Rule argument

[x0lemmaarg: spec-name: addfuns instance-name: lemma-name: is-valid-ref-stronger-def antecedent: succedent: is_valid_ref(str, r, st) ↔ is_obj(str, r, st) ∨ is_array(str, r, st) substlist: [st, r, str] → [st0, r, str] add preconditions?: F is rewrite lemma?: T current spec?: F rotate lemma?: F replace all?: T paths: ((1, 0, 0)) dummy: () ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st0, r, str)]]