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Proof step 9 from proof unchanged-levelsubset-equiv (previous step)

path∃(str, r, r0, st) ↔ path∃(str0, r, r0, st0), level⊆(str, str0), unchanged(str0, r, st, st0), junkref(str, r, st0), ∀ r0. (path∃(str0, r, r0, st) ↔ path∃(str0, r, r0, st0)) ∧ (path∃(str0, r, r0, st) → unchangedNorec(r0, st, st0)), path∃(str0, r, r0, st0) → unchangedNorec(r0, st, st0) ⊦ path∃(str0, r, r0, st0) ↔ path∃(str, r, r0, st0), junkref(str, r, st), unchanged(str0, r, st0, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Rule argument

[x0lemmaarg: spec-name: instance-name: lemma-name: unchanged-symmetric antecedent: succedent: unchanged(str, r, st, st1) ↔ unchanged(str, r, st1, st) substlist: [st1, st, r, str] → [st, st0, r, str0] add preconditions?: F is rewrite lemma?: T current spec?: T rotate lemma?: F replace all?: T paths: ((1, 0, 2)) dummy: () ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, st0, r, str0)]]