| n < datasize(buf) ⊦ n < # buf |
⊦ datasize(buf) = datasize(buf, # buf)
⊦ ¬ n < datasize(buf, n)
Used simplifier rules: datasize: ⊦ datasize(buf) = datasize(buf, # buf);%datasize-is-smaller-help: ⊦ ¬ n < datasize(buf, n);% ⊦ m < n → n ≠ 0; (s)%f: ⊦ m < n → n ≠ 0; (forward) from specification nat-basic%fle-01: ⊦ m ≤ n ∧ n < n0 → m < n0; (forward) from specification nat% ⊦ m < n ↔ ¬ n ≤ m; (ss)