| m0 + 1 = # pebs, ubi-io-initial(pebs), ubi-io-initial(subarray(pebs, 0, m0)) → abs(subarray(pebs, 0, m0), apebs) ∧ ubi-io-initial(apebs) ⊦ ∃ apebs. abs(pebs, apebs) ∧ ubi-io-initial(apebs) |
m0 + 1 = # pebs, ubi-io-initial(pebs) ⊦ ubi-io-initial(subarray(pebs, 0, m0)), ∃ apebs. abs(pebs, apebs) ∧ ubi-io-initial(apebs)
m0 + 1 = # pebs, abs(subarray(pebs, 0, m0), apebs), ubi-io-initial(pebs), ubi-io-initial(apebs) ⊦ ∃ apebs. abs(pebs, apebs) ∧ ubi-io-initial(apebs)