| abs(pebs, apebs), mtd-cons(pebs), ubi-io-initial(apebs), ubi-io-initial(pebs) ⊦ ubi-io-initial(apebs) ∧ ⟨apebs1 := apebs⟩ abs(pebs, apebs1) |
abs(pebs, apebs), mtd-cons(pebs), ubi-io-initial(pebs), ubi-io-initial(apebs) ⊦ ⟨apebs1 := apebs⟩ abs(pebs, apebs1)