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Proof step 7 from proof crash-neutral-readpage (previous step)

# buf = VFS_PAGE_SIZE, asynced ↔ true, inode = mkinode(m, md, boolvar, m0, m1, m2), afs-cons(dirs, files), m ∈ files ⊦ ⟨{if pageno ∈ files[inode.ino].content then buf := files[inode.ino].content[pageno] else buf := zeropage; err := ESUCCESS} or fail#(; ; err)⟩ true

Heuristic symbolic execution applied rule or right

And obtained the following new goals

Proof step 8:
# buf = VFS_PAGE_SIZE, asynced ↔ true, inode = mkinode(m, md, boolvar, m0, m1, m2), afs-cons(dirs, files), m ∈ files ⊦ ⟨fail#(; ; err)⟩ true, ⟨if pageno ∈ files[inode.ino].content then buf := files[inode.ino].content[pageno] else buf := zeropage; err := ESUCCESS⟩ true

Proof step 7 from proof crash-neutral-readpage (previous step)

Heuristic symbolic execution applied rule or right

And obtained the following new goals

Rule argument

Additional information