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Proof step 2 from proof reachless-succ (previous step)

reach(a, b, n) ⊦ ∃ m. ¬ n < m ∧ reach(a, b, m)

Heuristic quantifier closing applied rule exists right

And closed the goal!

Rule argument

[EXRARG : pos: right 1, [QUANTTERMLIST : (n)]]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ ¬ n < n])], [EXTRATERMS : (n)]]