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Proof step 21 from proof initialization (previous step)

abs(pebs, apebs), mtd-cons(pebs), ubi-io-initial(pebs), ubi-io-initial(apebs) ⊦ ∃ apebs0. ubi-io-initial(apebs0) ∧ ⟨apebs := apebs0⟩ abs(pebs, apebs)

User applied rule exists right

And obtained the following new goals

Proof step 22:
abs(pebs, apebs), mtd-cons(pebs), ubi-io-initial(apebs), ubi-io-initial(pebs) ⊦ ubi-io-initial(apebs) ∧ ⟨apebs1 := apebs⟩ abs(pebs, apebs1)

Rule argument

pos: right 1 terms: apebs abort: F discard: T computed: T

Additional information

Used terms: apebs