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Proof step 4 from proof ushort-pos-01 (previous step)

¬ s2i(i2s(i)) < 0, i < 65536, 0 ≤ i ⊦ us2i(i2s(i)) = i

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 5:
i < 65536, 0 ≤ i, 0 ≤ s2i(i2s(i)) ⊦ s2i(i2s(i)) = i

Rule argument

Additional information

Used simplifier rules: ushort-pos: ⊦ 0 ≤ s2i(sho) → us2i(sho) = s2i(sho);% ⊦ i ≤ j ∧ 0 ≤ i → 0 ≤ j; (forward)% ⊦ ¬ i < j ↔ j ≤ i;