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Proof step 4 from proof longshiftzero-not-neg (previous step)

0 ≤ i, >>>(64, i, band(j, 63)) < 0 ⊦

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 5:
⊦ 0 ≤ i → >>>(n, i, j) = i >> j
Proof step 6:
0 ≤ i, 0 ≤ i, i >> band(j, 63) < 0 ⊦

Rule argument

name: shiftzero-pos rotate: F subst: [j, i, n] → [band(j, 63), i, 64]

Additional information

Used terms: band(j, 63), i, 64