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Proof step 4 from proof ubyte-mult (previous step)

256 * 256 ≤ ub2i(by) * ub2i(by0), 0 < ub2i(by) * ub2i(by0), 0 ≤ ub2i(by) * ub2i(by0) ⊦

User applied rule insert rewrite lemma

And obtained the following new goals

Rule argument

seq: ⊦ i ≤ j ↔ ¬ j < i subst: [j, i] → [ub2i(by) * ub2i(by0), 256 * 256] rotate: F spec: int-abs inst: name: ax-03

Additional information

Used terms: ub2i(by) * ub2i(by0), 256 * 256