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Proof step 3 from proof issi-ubyte (previous step)

¬(~32768 ≤ ub2i(by) ∧ ub2i(by) ≤ 32767) ⊦ s2i(i2s(ub2i(by))) = ub2i(by)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 4:
0 < ub2i(by), ~32768 ≤ ub2i(by), 32767 < ub2i(by) ⊦

Rule argument

Additional information

Used simplifier rules: ubyte-pos-01: ⊦ ¬ ub2i(by) < 0;%short-max-10: ⊦ 32767 < i → s2i(sho) ≠ i;%i0 ≠ 0, i0 < i ⊦ (* i) < j → (* i0) < j;% ⊦ i < j ∧ 0 < i → 0 < j ∧ 1 < j; (forward)% ⊦ i < j ∧ 0 ≤ i → 0 < j; (forward)% ⊦ ¬ i < j ↔ j ≤ i;% ⊦ i < (* j) ∧ j < 0 → i < 0; (forward)% ⊦ ¬ i ≤ j ↔ j < i;