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Proof step 58 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) ⊦ [fail#(; ; err)] (err = ESUCCESS ∧ ⌜buf⌝ = (σ from n * VFS_PAGE_SIZE) to VFS_PAGE_SIZE ∨ ⌊err⌋ )

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 59:
# buf = VFS_PAGE_SIZE, ((m0 =>mkfile(n0, md, m, σ) * F))(files), afs-cons(dirs, files), m0 ∈ files ⊦ [fail#(; ; err)] (err = ESUCCESS ∧ ⌜buf⌝ = (σ from n * VFS_PAGE_SIZE) to VFS_PAGE_SIZE ∨ ⌊err⌋ )

Rule argument

Additional information

Used simplifier rules: ⊦ valid-file-ino(ino, dirs, files) ↔ ino ∈ files; (s)% ⊦ mkinode(m, md, boolvar, m0, m1, m2).ino = m; (s)%⊦ pre-readpage(inode, n, buf, dirs, files) ↔ valid-file-ino(inode.ino, dirs, files) ∧ # buf = VFS_PAGE_SIZE; (s)