128 ≤ s2i(sho), 0 ≤ s2i(sho), 2 < # int2bytes(s2i(sho)), 0 < s2i(sho) ⊦
[[CONCRETESIMPRULES : ([CSIMPFORWARD : ⊦ i ≤ j ∧ 0 < i → 0 < j])]]