x = i0 + x1, max(x) < i, i ∈ x, ∀ x0, i. # x0 < # x → (i ∈ x0 ∧ max(x0) < i → false) ⊦
[[CONCRETESIMPRULES : ([CSIMPGEN : list generated by [], +;], [CSIMPSEQ : ⊦ ¬ d ∈ []])]]