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Proof step 38 from proof eq-io-readpage (previous step)

⟨fail#(; ; err)⟩ (err = err1), # buf0 = VFS_PAGE_SIZE, files1[m] = mkfile(m3, md0, m4, content), m ∈ files1 ⊦ ⟨buf := zeropage; err := ESUCCESS⟩ (buf = buf0 ∧ err = err1), ∃ err0. ⌊err0⌋ ∧ ⟨err := err0⟩ (err = err1), pageno0 ∈ content

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Proof step 39:
⟨fail#(; ; err)⟩ (err = err1), # buf0 = VFS_PAGE_SIZE, files1[m] = mkfile(m3, md0, m4, content), m ∈ files1 ⊦ ⟨err := ESUCCESS⟩ (zeropage = buf0 ∧ err = err1), ∃ err0. ⌊err0⌋ ∧ ⟨err := err0⟩ (err = err1), pageno0 ∈ content

Proof step 38 from proof eq-io-readpage (previous step)

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Rule argument

Additional information