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Proof step 22 from proof modify+-sym (previous step)

modify(rs)(H, H0), rtc(n0, modify(rs))(H, H1), ∀ rs, H0, H1. rtc(n0, modify(rs))(H0, H1) → rtc(n0, modify(rs))(H1, H0) ⊦ ∃ H2. rtc(n0, modify(rs))(H1, H2) ∧ modify(rs)(H2, H0)

User applied rule exists right

And obtained the following new goals

Proof step 23:
modify(rs)(H, H0), rtc(n0, modify(rs))(H, H1), ∀ rs, H0, H1. rtc(n0, modify(rs))(H0, H1) → rtc(n0, modify(rs))(H1, H0) ⊦ rtc(n0, modify(rs))(H1, H) ∧ modify(rs)(H, H0)

Rule argument

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

Additional information

Used terms: H