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Proof step 83 from proof unchanged-lookup-list-generic (previous step)

fits(r, sks, st), unchanged(str, r, st, st0) ⊦ st[r -- sks] = st0[r -- sks], junkref(str, r, st)

User applied rule insert spec-lemma

And obtained the following new goals

Rule argument

[x0lemmaarg: spec-name: pointers instance-name: lemma-name: unchanged-junkref antecedent: succedent: ¬ junkref(str, r, st) ∧ unchanged(str, r, st, st1) → ¬ junkref(str, r, st1) substlist: [str, r, st, st1] → [str, r, st, st0] add preconditions?: F is rewrite lemma?: F current spec?: F rotate lemma?: F replace all?: F paths: () dummy: () ]

Additional information

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