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Proof step 78 from proof byte-law-righthift-not (previous step)

i2b(bits2uint(firstn(31, mklist(false, 32 - # int2bits(128)) + int2bits(128)))) = i2b(bits2uint(firstn(31, fillsgn(32, int2bits(~128))))), # int2bits(128) ≤ 32, # int2bits(~128) ≤ 32 ⊦

Heuristic elimination applied rule insert elim lemma

And obtained the following new goals

Rule argument

seq: n ≤ m ⊦ n0 = m - n ↔ m = n0 + n subst: [m, n, n0] → [32, # int2bits(128), n] rotate: T spec: nat inst: name: elim-sub

Additional information

Used simplifier rules: n ≤ m ⊦ n0 = m - n ↔ m = n0 + n; (elim) Used terms: 32, # int2bits(128), n