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Proof step 7 from proof rtc+-unfold-last (previous step)

p(a, c), rtc(n0, c, b), ∀ a, b. rtc(n0, a, b) → n0 = 0 ∨ (∃ c. p*(a, c) ∧ p(c, b)) ⊦ ∃ c. p*(a, c) ∧ p(c, b)

User applied rule all left

And obtained the following new goals

Proof step 8:
p(a, c), rtc(n0, c, b), rtc(n0, c, b) → n0 = 0 ∨ (∃ c0. p*(c, c0) ∧ p(c0, b)) ⊦ ∃ c. p*(a, c) ∧ p(c, b)

Rule argument

pos: left 3 terms: c, b abort: F discard: T computed: T

Additional information

Used terms: c, b