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Proof step 7 from proof readpage-prepost (previous step)

inode = mkinode(m0, md0, boolvar, m1, m2, m3), pageno = n, ((m0 =>mkfile(n0, md, m, σ) * F))(files), afs-cons(dirs, files), pre-readpage(inode, pageno, buf, dirs, files) ⊦ [if pageno ∈ files[inode.ino].content then buf := files[inode.ino].content[pageno] else buf := zeropage; err := ESUCCESS] (err = ESUCCESS ∧ ⌜buf⌝ = (σ from n * VFS_PAGE_SIZE) to VFS_PAGE_SIZE ∨ ⌊err⌋ )

Heuristic conditional right split applied rule if right

And obtained the following new goals

Proof step 8:
inode = mkinode(m0, md0, boolvar, m1, m2, m3), pageno = n, ((m0 =>mkfile(n0, md, m, σ) * F))(files), afs-cons(dirs, files), pre-readpage(inode, pageno, buf, dirs, files), pageno ∈ files[inode.ino].content ⊦ [buf := files[inode.ino].content[pageno]; err := ESUCCESS] (err = ESUCCESS ∧ ⌜buf⌝ = (σ from n * VFS_PAGE_SIZE) to VFS_PAGE_SIZE ∨ ⌊err⌋ )
Proof step 33:
inode = mkinode(m0, md0, boolvar, m1, m2, m3), pageno = n, ((m0 =>mkfile(n0, md, m, σ) * F))(files), afs-cons(dirs, files), pre-readpage(inode, pageno, buf, dirs, files) ⊦ [buf := zeropage; err := ESUCCESS] (err = ESUCCESS ∧ ⌜buf⌝ = (σ from n * VFS_PAGE_SIZE) to VFS_PAGE_SIZE ∨ ⌊err⌋ ), pageno ∈ files[inode.ino].content

Rule argument

pos: right 1

Proof step 7 from proof readpage-prepost (previous step)

Heuristic conditional right split applied rule if right

And obtained the following new goals

Rule argument

Additional information