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Proof step 19 from proof eq-io-readpage (previous step)

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

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Proof step 20:
# buf = VFS_PAGE_SIZE, files1[m] = mkfile(m3, md0, m4, content), pageno0 ∈ content, m ∈ files1 ⊦ ⟨err := ESUCCESS⟩ (content[pageno0] = files1[m].content[pageno0] ∧ err = ESUCCESS), ∃ err0. ⌊err0⌋ ∧ ⟨err := err0⟩ (buf = content[pageno0] ∧ err = ESUCCESS)

Proof step 19 from proof eq-io-readpage (previous step)

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Rule argument

Additional information