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Proof step 22 from proof fillsgn-rec (previous step)

bytes = by + bytes0, 0 ≤ bytes2int(bytes) ⊦ bytes = [], mklist(i2b(0), n + 1) = (¬ 0 ≤ b2i(by) ⊃ i2b(~1);i2b(0)) ' + mklist(i2b(0), n), n = 0

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

Additional information

Used simplifier rules: ⊦ i ≤ j ∧ 0 ≤ i → 0 ≤ j; (forward)% ⊦ (bytes + bytes0) + bytes1 = bytes + bytes0 + bytes1;% ⊦ by ' + bytes ≠ [];% ⊦ by + bytes = by ' + bytes;