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

us2i(sho) + us2i(i2s(i)) < 2 ^ 16 → us2i(i2s(s2i(sho) + s2i(i2s(i)))) = us2i(sho) + us2i(i2s(i)), i < 32767, us2i(sho) + i < 65536, 0 ≤ i ⊦ us2i(i2s(s2i(sho) + i)) = us2i(sho) + i

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

Additional information

Used simplifier rules: ⊦ ¬ i < j ↔ j ≤ i;% ⊦ i + j = j + i;% ⊦ i + j + i0 = (i + j) + i0;