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Proof step 7 from proof datasize-datasize-elim-h (previous step)

buf[n0] = empty, n0 < # buf, ∀ buf. n0 ≤ # buf → datasize(buf, datasize(buf, n0)) = datasize(buf, n0) ⊦ datasize(buf, datasize(buf, n0)) = datasize(buf, n0)

Heuristic quantifier closing applied rule all left

And closed the goal!

Rule argument

pos: left 3 terms: buf

Additional information

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