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Proof step 3 from proof inv-change (previous step)

m < # avol, ebm-vol-inv(avol), is-aligned(n, EB_PAGE_SIZE), n ≤ LEB_SIZE, n ≤ # buf ⊦ ⟪ebm_avol_change#(m, n, buf; avol; err)⟫ ebm-vol-inv(avol)

Heuristic nonrecursive calls applied rule call right

And obtained the following new goals

Proof step 4:
m < # avol, ebm-vol-inv(avol), is-aligned(n, EB_PAGE_SIZE), n ≤ # buf, n ≤ LEB_SIZE ⊦ ⟪if m < # avol ∧ n ≤ # buf ∧ n ≤ LEB_SIZE ∧ is-aligned(n, EB_PAGE_SIZE) then {fail_or_success#(; ; err); if err = ESUCCESS then avol[m] := mapped(subarray(buf, 0, n))} else abort⟫ ebm-vol-inv(avol)

Rule argument

pos: right 1

Additional information

Used simplifier rules: change: ⊦ ;