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Proof step 27 from proof refine-write-echdr (previous step)

# buf2 = EB_PAGE_SIZE, apebs[m2] = mkpeb(empty, avhdr, buf0, m1, false), pebs[m2] = mkpeb(buf1, 0, false), err = ESUCCESS, err = err0, 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 ⊦ ⟪pebs[m2].data := copy(buf2, 0, pebs[m2].data, 0, EB_PAGE_SIZE); pebs[m2].fill := EB_PAGE_SIZE⟫ ⟨aubi_io_write_echdr#(m2, aechdr(m3); apebs; err1)⟩ (abs(pebs, apebs) ∧ err = err1)

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Proof step 28:
# buf2 = EB_PAGE_SIZE, pebs[m2] = mkpeb(buf1, 0, false), apebs[m2] = mkpeb(empty, avhdr, buf0, m1, false), err = err0, err = ESUCCESS, 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), 0 + EB_PAGE_SIZE ≤ # buf2, 0 + EB_PAGE_SIZE ≤ # pebs[m2].data, ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪pebs := pebs[m2, pebs[m2].data:= copy(buf2, 0, pebs[m2].data, 0, EB_PAGE_SIZE)] [m2, pebs[m2, pebs[m2].data:= copy(buf2, 0, pebs[m2].data, 0, EB_PAGE_SIZE)][m2].fill:= EB_PAGE_SIZE ]⟫ ⟨aubi_io_write_echdr#(m2, aechdr(m3); apebs; err1)⟩ (abs(pebs, apebs) ∧ err = err1)

Rule argument

Additional information

Used simplifier rules: ⊦ ¬ ⌊ESUCCESS⌋ ; (s)% ⊦ n + 0 = n; (s)%a: ⊦ (m + n0) + n1 = m + n0 + n1; from specification nat-basic%c: ⊦ m + n = n + m; from specification nat-basic% ⊦ m ≤ m; (s)% ⊦ mkpeb(buf, m, boolvar).data = buf; (s)% ⊦ m < n ↔ ¬ n ≤ m; (ss)% ⊦ m < n → (n ≤ m ↔ false); (s)%n < # pebs ⊦ pebs[n] = mkpeb(buf, m, boolvar) ∧ mtd-cons(pebs) → # buf = PEB_SIZE; (s)% ⊦ m ≤ n ↔ ¬ n < m; (ss)% ⊦ ¬ PEB_SIZE < EB_PAGE_SIZE; (s)