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Proof step 4 from proof hasSharing-rec (previous step)

hasSharing(r0, st), r0 ∈ refs ⊦ hasSharing(refs, st), hasSharing(r, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 2:
⊦ hasSharing(refs, st) ↔ (∃ r. r ∈ refs ∧ hasSharing(r, st))
Proof step 3:
hasSharing(r0, st), r0 ∈ refs ⊦ ∃ r. r ∈ refs ∧ hasSharing(r, st), hasSharing(r, st)

Rule argument

[x0lemmaarg: spec-name: instance-name: lemma-name: hasSharing-list-def antecedent: succedent: hasSharing(refs, st) ↔ (∃ r. r ∈ refs ∧ hasSharing(r, st)) substlist: [st, refs] → [st, refs] add preconditions?: F is rewrite lemma?: T current spec?: T rotate lemma?: F replace all?: T paths: ((1, 0, 0)) dummy: () ]

Additional information

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