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Proof step 24 from proof reachable-addnew-rev (
previous step
)
r ∈ H, path(r ' + x1, H) ⊦ H[(r ' + x1).last].nxt = null, (r ' + x1).last = H[(r ' + x1).last].nxt, H[(r ' + x1).last].nxt ∈ H, r ∈ x1, H[(r ' + x1).last].nxt ∈ x1, dups(x1), ∃ x. path(r ' + x, H) ∧ (r ' + x).last = (r ' + x1).last
Heuristic quantifier closing applied rule exists right
And closed the goal!
Rule argument
pos: right 7 terms: x1
Additional information
Used terms: x1