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Proof step 6 from proof process-queue (previous step)

((del-list(to_delete, n) * P))(H) ⊦ [tree_buffer_heap_process_one#(; H, to_delete)] ( (1 ≤ n → ((del-list(to_delete, n - 1) * P))(H)) ∧ (n = 0 → to_delete = [] ∧ P(H)) → ⟪tree_buffer_heap_process_one#(; H, to_delete)⟫ ((2 ≤ n → ((del-list(to_delete, n - 2) * P))(H)) ∧ (n < 2 → to_delete = [] ∧ P(H))))

User applied rule skip call

And obtained the following new goals

Proof step 7:
((del-list(to_delete, n) * P))(H) ⊦ ∀ H, to_delete. (1 ≤ n → ((del-list(to_delete, n - 1) * P))(H)) ∧ (n = 0 → to_delete = [] ∧ P(H)) → ⟪tree_buffer_heap_process_one#(; H, to_delete)⟫ ((2 ≤ n → ((del-list(to_delete, n - 2) * P))(H)) ∧ (n < 2 → to_delete = [] ∧ P(H)))

Rule argument

pos: right 1

Proof step 6 from proof process-queue (previous step)

User applied rule skip call

And obtained the following new goals

Rule argument

Additional information