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Proof step 11 from proof crash-neutral-readpage (previous step)

# buf = VFS_PAGE_SIZE, files[m] = mkfile(m0, md, # links(m, dirs), content), afs-cons(dirs, files), m ∈ files ⊦ ⟨if pageno ∈ content then buf := content[pageno] else buf := zeropage; err := ESUCCESS⟩ true, ⟨fail#(; ; err)⟩ true

Heuristic conditional right split applied rule if right

And obtained the following new goals

Proof step 12:
# buf = VFS_PAGE_SIZE, files[m] = mkfile(m0, md, # links(m, dirs), content), afs-cons(dirs, files), pageno ∈ content, m ∈ files ⊦ ⟨buf := content[pageno]; err := ESUCCESS⟩ true, ⟨fail#(; ; err)⟩ true
Proof step 14:
# buf = VFS_PAGE_SIZE, files[m] = mkfile(m0, md, # links(m, dirs), content), afs-cons(dirs, files), m ∈ files ⊦ ⟨buf := zeropage; err := ESUCCESS⟩ true, ⟨fail#(; ; err)⟩ true, pageno ∈ content

Rule argument

pos: right 1

Proof step 11 from proof crash-neutral-readpage (previous step)

Heuristic conditional right split applied rule if right

And obtained the following new goals

Rule argument

Additional information