⊦ ubi-io-initial(apebs) ↔ (∀ n. n < # apebs → ubi-io-peb-initial(apebs[n]))
Used simplifier rules: ⊦ # mkapebs(n) = n; (s)% ⊦ ¬ m < 0; (s) Used terms: mkapebs(0)