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Proof step 1 from proof refine-write-echdr (conclusion)

ubi-io-write-echdr-pre(m, aehdr, apebs), abs(pebs, apebs), ubi-io-inv(apebs), m0 = EB_PAGE_SIZE, mtd-cons(pebs) ⊦ ⟪ubi_io_write_echdr#(m, aehdr, m0; pebs; err)⟫ ⟨aubi_io_write_echdr#(m, aehdr; apebs; err0)⟩ (abs(pebs, apebs) ∧ err = err0)

System applied rule normalize

And obtained the following new goals

Proof step 2:
m0 = EB_PAGE_SIZE, abs(pebs, apebs), mtd-cons(pebs), ubi-io-inv(apebs), ubi-io-write-echdr-pre(m, aehdr, apebs) ⊦ ⟪ubi_io_write_echdr#(m, aehdr, m0; pebs; err)⟫ ⟨aubi_io_write_echdr#(m, aehdr; apebs; err0)⟩ (abs(pebs, apebs) ∧ err = err0)

Proof step 1 from proof refine-write-echdr (conclusion)

System applied rule normalize

And obtained the following new goals

Rule argument

Additional information