countdims(ints, i) = 0, 0 < i ⊦
[[CONCRETESIMPRULES : ([CSIMPFORWARD : ⊦ i < j ∧ 0 ≤ i → 0 < j], [CSIMPFORWARD : ⊦ i < i0 ∧ i = i1 → i1 < i0])]]