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Proof step 9 from proof unchanged-symmetric (previous step)

path∃(str, r, r0, st), path∃(str, r, r0, st1), unchangedNorec(r0, st1, st) ⊦ unchangedNorec(r0, st, st1)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 8:
⊦ unchangedNorec(r, st, st0) ↔ unchangedNorec(r, st0, st)

Rule argument

[x0lemmaarg: spec-name: instance-name: lemma-name: unchNorec-sym antecedent: succedent: unchangedNorec(r, st, st0) ↔ unchangedNorec(r, st0, st) substlist: [st0, st, r] → [st1, st, r0] 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 : (st1, st, r0)]]