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Proof step 44 from proof datasize-further (previous step)

n + 1 = datasize(buf, n2), buf[n2] = empty, n < # buf, n < n0, n < n2, n1 ≤ n2, n0 ≤ n2, datasize(buf, n2) ≤ # buf, datasize(buf, n2) ≤ n0, datasize(buf, n2) ≤ n2, n ≤ n1, ∀ n3. n ≤ n3 ∧ n3 < n2 → buf[n3] = empty ⊦ buf[n] = empty, buf[n0] = empty, buf[n1] = empty, datasize(buf, n) = datasize(buf, n2)

Heuristic quantifier closing applied rule all left

And closed the goal!

Rule argument

pos: left 12 terms: n

Additional information

Used simplifier rules: ⊦ m ≤ m; (s) Used terms: n