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Proof step 86 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), m2 < # pebs, m2 < # apebs, abs(pebs, apebs), abs-peb(mkpeb(buf1, 0, false), mkpeb(empty, avhdr, buf0, m1, false)), mtd-cons(pebs), ubi-io-inv(apebs), err = ESUCCESS → is-encoded(echdr(m), buf2), err = ESUCCESS ∨ ⌊err⌋ ⊦ ⟪skip⟫ ⟨aubi_io_write_echdr#(m2, aechdr(m); apebs; err0)⟩ (abs(pebs, apebs) ∧ err = err0), err = ESUCCESS

Heuristic symbolic execution applied rule skip right

And obtained the following new goals

Proof step 87:
# buf2 = EB_PAGE_SIZE, pebs[m2] = mkpeb(buf1, 0, false), apebs[m2] = mkpeb(empty, avhdr, buf0, m1, false), m2 < # apebs, m2 < # pebs, abs(pebs, apebs), abs-peb(mkpeb(buf1, 0, false), mkpeb(empty, avhdr, buf0, m1, false)), mtd-cons(pebs), ubi-io-inv(apebs), err = ESUCCESS → is-encoded(echdr(m), buf2), err = ESUCCESS ∨ ⌊err⌋ ⊦ ⟨aubi_io_write_echdr#(m2, aechdr(m); apebs; err0)⟩ (abs(pebs, apebs) ∧ err = err0), err = ESUCCESS

Proof step 86 from proof refine-write-echdr (previous step)

Heuristic symbolic execution applied rule skip right

And obtained the following new goals

Rule argument

Additional information