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Proof step 4 from proof fillsgn-not-empty (previous step)

¬ # fillsgn(n, int2bytes(i)) ≠ # [], fillsgn(n, int2bytes(i)) = [] ⊦

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 5:
⊦ # bytes ≤ n → # fillsgn(n, bytes) = n
Proof step 6:
¬ # int2bytes(i) ≤ n, ¬ # fillsgn(n, int2bytes(i)) ≠ # [], fillsgn(n, int2bytes(i)) = [] ⊦

Rule argument

name: fillsgn-length-02 rotate: F subst: [bytes, n] → [int2bytes(i), n]

Additional information

Used simplifier rules: int2bytes-empty: ⊦ int2bytes(i) ≠ [];% ⊦ # [] = 0;% ⊦ m ≤ 0 ↔ m = 0;% ⊦ # bytes = 0 ↔ bytes = []; Used terms: int2bytes(i), n