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Proof step 10 from proof refine-change (previous step)

m < # avols[default-volid], ebm-cons(avols), ebm-vol-inv(abs(avols[default-volid])), is-aligned(n, EB_PAGE_SIZE), default-volid ∈ avols, n ≤ # buf, n ≤ LEB_SIZE ⊦ ⟪choose err0 with ⌊err0⌋ ∨ err0 = ESUCCESS in err := err0; avol := abs(avols[default-volid]); if err = ESUCCESS then avols[default-volid][m] := mapped(subarray(buf, 0, n) + mkempbuf(LEB_SIZE - n), n)⟫ ⟨ebm_avol_change#(m, n, buf; avol; err0)⟩ (avol = abs(avols[default-volid]) ∧ err = err0)

Heuristic symbolic execution applied rule choose right

And obtained the following new goals

Proof step 11:
m < # avols[default-volid], ebm-cons(avols), ebm-vol-inv(abs(avols[default-volid])), is-aligned(n, EB_PAGE_SIZE), default-volid ∈ avols, n ≤ LEB_SIZE, n ≤ # buf, ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪err := err0; avol := abs(avols[default-volid]); if err = ESUCCESS then avols[default-volid][m] := mapped(subarray(buf, 0, n) + mkempbuf(LEB_SIZE - n), n)⟫ ⟨ebm_avol_change#(m, n, buf; avol; err1)⟩ (avol = abs(avols[default-volid]) ∧ err = err1)
Proof step 53:
m < # avols[default-volid], ebm-cons(avols), ebm-vol-inv(abs(avols[default-volid])), is-aligned(n, EB_PAGE_SIZE), default-volid ∈ avols, n ≤ LEB_SIZE, n ≤ # buf ⊦ ∃ err0. ⌊err0⌋ ∨ err0 = ESUCCESS

Proof step 10 from proof refine-change (previous step)

Heuristic symbolic execution applied rule choose right

And obtained the following new goals

Rule argument

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