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Proof step 61 from proof refine-write-echdr (previous step)

# buf2 = EB_PAGE_SIZE, pebs[m2] = mkpeb(buf1, 0, false), apebs[m2] = mkpeb(empty, avhdr, buf0, m1, false), err = err0, m0 = m2, n0 = EB_PAGE_SIZE, n1 = 0, m2 < # apebs, m2 < # pebs, abs(pebs, apebs), abs-peb(mkpeb(buf1, 0, false), mkpeb(empty, avhdr, buf0, m1, false)), is-encoded(echdr(m3), buf2), mtd-cons(pebs), ubi-io-inv(apebs), ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪m := 0; choose n with (n < n0 ∨ n = 0 ∧ n0 = 0) ∧ is-aligned(n, EB_PAGE_SIZE) in if n ≠ 0 then {pebs[m0].data := copy(buf2, n1, pebs[m0].data, m, n); pebs[m0].fill := m + n}⟫ ⟨aubi_io_write_echdr#(m2, aechdr(m3); apebs; err1)⟩ (abs(pebs, apebs) ∧ err = err1), err = ESUCCESS

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Proof step 62:
# buf2 = EB_PAGE_SIZE, apebs[m2] = mkpeb(empty, avhdr, buf0, m1, false), pebs[m2] = mkpeb(buf1, 0, false), err = err0, m = 0, m0 = m2, n0 = EB_PAGE_SIZE, n1 = 0, m2 < # pebs, m2 < # apebs, abs(pebs, apebs), abs-peb(mkpeb(buf1, 0, false), mkpeb(empty, avhdr, buf0, m1, false)), is-encoded(echdr(m3), buf2), mtd-cons(pebs), ubi-io-inv(apebs), ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪choose n with (n < n0 ∨ n = 0 ∧ n0 = 0) ∧ is-aligned(n, EB_PAGE_SIZE) in if n ≠ 0 then {pebs[m0].data := copy(buf2, n1, pebs[m0].data, m, n); pebs[m0].fill := m + n}⟫ ⟨aubi_io_write_echdr#(m2, aechdr(m3); apebs; err1)⟩ (abs(pebs, apebs) ∧ err = err1), err = ESUCCESS

Proof step 61 from proof refine-write-echdr (previous step)

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Rule argument

Additional information