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Proof step 6 from proof inv-readpage (previous step)

# buf = VFS_PAGE_SIZE, 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 conditional right split applied rule or split right

And obtained the following new goals

Proof step 7:
# buf = VFS_PAGE_SIZE, 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⟫ true
Proof step 12:
# buf = VFS_PAGE_SIZE, inode = mkinode(m, md, boolvar, m0, m1, m2), afs-cons(dirs, files), m ∈ files ⊦ ⟪fail#(; ; err)⟫ true

Proof step 6 from proof inv-readpage (previous step)

Heuristic conditional right split applied rule or split right

And obtained the following new goals

Rule argument

Additional information