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Proof step 7 from proof datasize-ls (previous step)

n < # buf, m ≤ # buf, m ≤ n + 1 ⊦ buf[n] = empty, m = 0, ∃ n. m ≤ n + 1 ∧ n < # buf ∧ buf[n] ≠ empty

Heuristic quantifier closing applied rule exists right

And closed the goal!

Rule argument

pos: right 3 terms: n

Additional information

Used terms: n