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Proof step 185 from proof refine-write (previous step)

⟨ebm_change#(v, vtblpnum3, vtblpnum5 + n5, subarray(buf2, 0, vtblpnum5) + subarray(buf, n3, n5); avols0; err0)⟩ (avols0 = avols1 ∧ err0 = err2), # apebs0 = # wlar, LEB_SIZE = (n + n2) + vtblpnum5, apebs0[n4] = mkpeb(aehdr, avhdr, buf2, m0, false), wlar[n4] = wl-entry(m1, used), avols[v][vtblpnum3] = mapped(buf2, m), vols[v][vtblpnum3] = ⌜n4⌝ , avols0 = avols[v, avols[v][vtblpnum3, mapped(subarray(buf2, 0, vtblpnum5) + subarray(buf, n3, n2) + mkempbuf(n), vtblpnum5 + n2)]], n0 = n5, n1 = n3, vtblpnum = vtblpnum5, vtblpnum0 = vtblpnum3, avhdr.valid?, aehdr.valid?, vtblpnum3 < # avols[v], vtblpnum3 < # vols[v], n2 < n5, n4 < # wlar, abs(avols, apebs0, vols, q), abs (avols[v, avols[v][vtblpnum3, mapped(subarray(buf2, 0, vtblpnum5) + subarray(buf, n3, n2) + mkempbuf(n), vtblpnum5 + n2)]], apebs0[n4, mkpeb(aehdr, avhdr, subarray(buf2, 0, vtblpnum5) + subarray(buf, n3, n2) + mkempbuf(n), vtblpnum5 + n2, false)], vols, q), abs(avols1, apebs1, vols0, q0), bflipset-cons(bflipset, wlar), ebm-cons(avols), ebm-cons(avols[v, avols[v][vtblpnum3, mapped(subarray(buf2, 0, vtblpnum5) + subarray(buf, n3, n2) + mkempbuf(n), vtblpnum5 + n2)]]), is-aligned(n2, EB_PAGE_SIZE), is-aligned(n5, EB_PAGE_SIZE), is-aligned(vtblpnum5, EB_PAGE_SIZE), ubi-io-inv(apebs0), ubi-io-inv(apebs0[n4, mkpeb(aehdr, avhdr, subarray(buf2, 0, vtblpnum5) + subarray(buf, n3, n2) + mkempbuf(n), vtblpnum5 + n2, false)]), ubi-io-peb-inv(mkpeb(aehdr, avhdr, buf2, m0, false)), unique-sqns(apebs0[n4, mkpeb(aehdr, avhdr, subarray(buf2, 0, vtblpnum5) + subarray(buf, n3, n2) + mkempbuf(n), vtblpnum5 + n2, false)]), unique-sqns(apebs0), valid-ebatbl (apebs0[n4, mkpeb(aehdr, avhdr, subarray(buf2, 0, vtblpnum5) + subarray(buf, n3, n2) + mkempbuf(n), vtblpnum5 + n2, false)], wlar, vols, vtblpnum4), valid-ebatbl(apebs0, wlar, vols, vtblpnum4), valid-eraseq(apebs0[n4, mkpeb(aehdr, avhdr, subarray(buf2, 0, vtblpnum5) + subarray(buf, n3, n2) + mkempbuf(n), vtblpnum5 + n2, false)], q), valid-eraseq(apebs0, q), valid-eraseq(wlar, q), valid-eraseq(q), valid-global-sqn(apebs0[n4, mkpeb(aehdr, avhdr, subarray(buf2, 0, vtblpnum5) + subarray(buf, n3, n2) + mkempbuf(n), vtblpnum5 + n2, false)], sqnum), valid-global-sqn(apebs0, sqnum), valid-vtbl(apebs0, vols, wlar, vtblpnum4), valid-wl(apebs0[n4, mkpeb(aehdr, avhdr, subarray(buf2, 0, vtblpnum5) + subarray(buf, n3, n2) + mkempbuf(n), vtblpnum5 + n2, false)], wlar), valid-wl(apebs0, wlar), v ∈ avols, v ∈ vols, vtblpnum5 ≤ LEB_SIZE, n3 + n5 ≤ # buf, m0 ≤ LEB_SIZE, m ≤ LEB_SIZE, n2 + vtblpnum5 ≤ LEB_SIZE, m0 ≤ vtblpnum5, m ≤ vtblpnum5, n5 + n3 ≤ # buf, vtblpnum5 + n5 ≤ LEB_SIZE, n3 + n2 ≤ # buf, ⌊err3⌋ ⊦ ⟨if v ∈ avols ∧ vtblpnum0 < # avols[v] ∧ vtblpnum + n0 ≤ LEB_SIZE ∧ is-aligned(vtblpnum, EB_PAGE_SIZE) ∧ is-aligned(n0, EB_PAGE_SIZE) ∧ n0 + n1 ≤ # buf ∧ (avols[v][vtblpnum0].mapped? → vtblpnum ≥ avols[v][vtblpnum0].fill) then {fail_or_success#(; ; err); if err = ESUCCESS then if avols[v][vtblpnum0].mapped? then if n0 ≠ 0 then avols[v][vtblpnum0] := mapped (subarray(avols[v][vtblpnum0].data, 0, vtblpnum) + subarray(buf, n1, n0) + mkempbuf(LEB_SIZE - vtblpnum - n0), vtblpnum + n0) else avols[v][vtblpnum0] := mapped(mkempbuf(vtblpnum) + subarray(buf, n1, n0) + mkempbuf(LEB_SIZE - vtblpnum - n0), vtblpnum + n0) else if avols[v][vtblpnum0].mapped? then choose n with n < n0 ∧ is-aligned(n, EB_PAGE_SIZE) in if n ≠ 0 then avols[v][vtblpnum0] := mapped (subarray(avols[v][vtblpnum0].data, 0, vtblpnum) + subarray(buf, n1, n) + mkempbuf(LEB_SIZE - vtblpnum - n), vtblpnum + n) ifnone skip else if n0 ≠ 0 then avols[v][vtblpnum0] := unmapped} else abort⟩ (abs(avols, apebs1, vols0, q0) ∧ err2 = err), n2 = 0, vtblpnum4 = n4, VTBL_VOLID ∈ vols

Heuristic symbolic execution applied rule if positive right

And obtained the following new goals

Proof step 186:
⟨ebm_change#(v, vtblpnum3, vtblpnum5 + n5, subarray(buf2, 0, vtblpnum5) + subarray(buf, n3, n5); avols0; err0)⟩ (avols0 = avols1 ∧ err0 = err2), # apebs0 = # wlar, LEB_SIZE = (n + n2) + vtblpnum5, vols[v][vtblpnum3] = ⌜n4⌝ , avols[v][vtblpnum3] = mapped(buf2, m), wlar[n4] = wl-entry(m1, used), apebs0[n4] = mkpeb(aehdr, avhdr, buf2, m0, false), avols0 = avols[v, avols[v][vtblpnum3, mapped(subarray(buf2, 0, vtblpnum5) + subarray(buf, n3, n2) + mkempbuf(n), vtblpnum5 + n2)]], n0 = n5, n1 = n3, vtblpnum = vtblpnum5, vtblpnum0 = vtblpnum3, aehdr.valid?, avhdr.valid?, n4 < # wlar, n2 < n5, vtblpnum3 < # vols[v], vtblpnum3 < # avols[v], abs(avols1, apebs1, vols0, q0), abs (avols[v, avols[v][vtblpnum3, mapped(subarray(buf2, 0, vtblpnum5) + subarray(buf, n3, n2) + mkempbuf(n), vtblpnum5 + n2)]], apebs0[n4, mkpeb(aehdr, avhdr, subarray(buf2, 0, vtblpnum5) + subarray(buf, n3, n2) + mkempbuf(n), vtblpnum5 + n2, false)], vols, q), abs(avols, apebs0, vols, q), bflipset-cons(bflipset, wlar), ebm-cons(avols[v, avols[v][vtblpnum3, mapped(subarray(buf2, 0, vtblpnum5) + subarray(buf, n3, n2) + mkempbuf(n), vtblpnum5 + n2)]]), ebm-cons(avols), is-aligned(vtblpnum5, EB_PAGE_SIZE), is-aligned(n5, EB_PAGE_SIZE), is-aligned(n2, EB_PAGE_SIZE), ubi-io-inv(apebs0[n4, mkpeb(aehdr, avhdr, subarray(buf2, 0, vtblpnum5) + subarray(buf, n3, n2) + mkempbuf(n), vtblpnum5 + n2, false)]), ubi-io-inv(apebs0), ubi-io-peb-inv(mkpeb(aehdr, avhdr, buf2, m0, false)), unique-sqns(apebs0), unique-sqns(apebs0[n4, mkpeb(aehdr, avhdr, subarray(buf2, 0, vtblpnum5) + subarray(buf, n3, n2) + mkempbuf(n), vtblpnum5 + n2, false)]), valid-ebatbl(apebs0, wlar, vols, vtblpnum4), valid-ebatbl (apebs0[n4, mkpeb(aehdr, avhdr, subarray(buf2, 0, vtblpnum5) + subarray(buf, n3, n2) + mkempbuf(n), vtblpnum5 + n2, false)], wlar, vols, vtblpnum4), valid-eraseq(q), valid-eraseq(wlar, q), valid-eraseq(apebs0, q), valid-eraseq(apebs0[n4, mkpeb(aehdr, avhdr, subarray(buf2, 0, vtblpnum5) + subarray(buf, n3, n2) + mkempbuf(n), vtblpnum5 + n2, false)], q), valid-global-sqn(apebs0, sqnum), valid-global-sqn(apebs0[n4, mkpeb(aehdr, avhdr, subarray(buf2, 0, vtblpnum5) + subarray(buf, n3, n2) + mkempbuf(n), vtblpnum5 + n2, false)], sqnum), valid-vtbl(apebs0, vols, wlar, vtblpnum4), valid-wl(apebs0, wlar), valid-wl(apebs0[n4, mkpeb(aehdr, avhdr, subarray(buf2, 0, vtblpnum5) + subarray(buf, n3, n2) + mkempbuf(n), vtblpnum5 + n2, false)], wlar), v ∈ vols, v ∈ avols, n3 + n2 ≤ # buf, vtblpnum5 + n5 ≤ LEB_SIZE, n5 + n3 ≤ # buf, m ≤ vtblpnum5, m0 ≤ vtblpnum5, n2 + vtblpnum5 ≤ LEB_SIZE, m ≤ LEB_SIZE, m0 ≤ LEB_SIZE, n3 + n5 ≤ # buf, vtblpnum5 ≤ LEB_SIZE, ⌊err3⌋ ⊦ ⟨fail_or_success#(; ; err); if err = ESUCCESS then if avols[v][vtblpnum0].mapped? then if n0 ≠ 0 then avols[v][vtblpnum0] := mapped (subarray(avols[v][vtblpnum0].data, 0, vtblpnum) + subarray(buf, n1, n0) + mkempbuf(LEB_SIZE - vtblpnum - n0), vtblpnum + n0) else avols[v][vtblpnum0] := mapped(mkempbuf(vtblpnum) + subarray(buf, n1, n0) + mkempbuf(LEB_SIZE - vtblpnum - n0), vtblpnum + n0) else if avols[v][vtblpnum0].mapped? then choose n with n < n0 ∧ is-aligned(n, EB_PAGE_SIZE) in if n ≠ 0 then avols[v][vtblpnum0] := mapped (subarray(avols[v][vtblpnum0].data, 0, vtblpnum) + subarray(buf, n1, n) + mkempbuf(LEB_SIZE - vtblpnum - n), vtblpnum + n) ifnone skip else if n0 ≠ 0 then avols[v][vtblpnum0] := unmapped⟩ (abs(avols, apebs1, vols0, q0) ∧ err2 = err), n2 = 0, vtblpnum4 = n4, VTBL_VOLID ∈ vols

Rule argument

pos: right 1

Additional information

Used simplifier rules: ⊦ v ∈ vols ∧ abs(avols, apebs, vols, q) → v ∈ avols; (ss)%⊦ v ∈ vols ∧ m < # vols[v] ∧ abs(avols, apebs, vols, q) → m < # avols[v]; (ss)% ⊦ mapped(buf, m).mapped?; (s)% ⊦ mapped(buf, m).fill = m; (s)% ⊦ n ≥ m ↔ m ≤ n; (s)