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Proof step 36 from proof fillsgn-rec (previous step)

bytes2int(by ' + bytes0) < 0 ⊦ i2b(~1) ' + by ' + bytes0 = (¬ 0 ≤ b2i(by) ⊃ i2b(~1);i2b(0)) ' + fillsgn(1 + # bytes0, by ' + bytes0)

User applied rule insert rewrite lemma

And obtained the following new goals

Rule argument

name: fillsgn-longer rotate: F subst: [bytes, n] → [by ' + bytes0, 1 + # bytes0]

Additional information

Used simplifier rules: ⊦ #(bytes + bytes0) = # bytes + # bytes0;% ⊦ # by ' = 0 +1;% ⊦ (bytes + bytes0) + bytes1 = bytes + bytes0 + bytes1;% ⊦ n ≥ m ↔ m ≤ n;% ⊦ m + n ≤ m + n0 ↔ n ≤ n0;% ⊦ ¬ m ≤ n ↔ n < m;% ⊦ ¬ n < n;% ⊦ (m + n0) + n1 = m + n0 + n1;% ⊦ m + n = n + m; Used terms: by ' + bytes0, 1 + # bytes0