| n + m ≤ # zbrar ⊦ sorted(zbrar, 0, n + m) → (adr ∈ payload(zbrar, n, m) ↔ (∃ m0. n ≤ m0 ∧ m0 < n + m ∧ zbrar[m0].entry? ∧ zbrar[m0].adr = adr)) |
sorted(zbrar, 0, n + m), n + m ≤ # zbrar ⊦ adr ∈ payload(zbrar, n, m) ↔ (∃ m0. n ≤ m0 ∧ m0 < n + m ∧ zbrar[m0].entry? ∧ zbrar[m0].adr = adr)