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Proof step 1 from proof refine-isbad (conclusion)

ubi-io-isbad-pre(m, apebs), abs(pebs, apebs), ubi-io-inv(apebs), m0 = EB_PAGE_SIZE, mtd-cons(pebs) ⊦ ⟪ubi_io_isbad#(m, pebs; ; isbad, err)⟫ ⟨aubi_io_isbad#(m, apebs; ; isbad0, err0)⟩ (abs(pebs, apebs) ∧ (isbad ↔ isbad0) ∧ 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-isbad-pre(m, apebs) ⊦ ⟪ubi_io_isbad#(m, pebs; ; isbad, err)⟫ ⟨aubi_io_isbad#(m, apebs; ; isbad0, err0)⟩ (abs(pebs, apebs) ∧ (isbad ↔ isbad0) ∧ err = err0)

Proof step 1 from proof refine-isbad (conclusion)

System applied rule normalize

And obtained the following new goals

Rule argument

Additional information