| 2 = count(A[m], mkbag(A, i0)), A[m1] = A[m], A[m0] = A[m], i0 < # A, m0 < # A, m < # A, m1 < # A, m0 < i0, m0 + 1 < # A, m ≤ i0, m1 ≤ i0 ⊦ A[m] = A[i0], m = m1, m = m0, m0 = m1, m < i0 ∧ m1 < i0 |
Used simplifier rules: ⊦ m < n ↔ ¬ n ≤ m; (ss)% ⊦ m ≤ n → (n ≤ m ↔ m = n); (s)% ⊦ m < n → m ≤ n; (s) Used formulas: m < i0