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Proof step 134 from proof fsync-pages-inv (previous step)

# buf = VFS_PAGE_SIZE, (m7 = m ⊃ mkfile(m3, md, # links(m, dirs), content1[n0, buf]);mkfile(m9, md3, # links(m7, dirs), content3)) = mkfile(m0, md1, m4, content0), files1[m7] = mkfile(m9, md3, # links(m7, dirs), content3), files0[m7] = mkfile(m5, md2, m6, content2), pcache0[datakey(m7, m8)] = mkpentry(boolvar0, buf1), files1[m] = mkfile(m3, md, # links(m, dirs), content1), files0[m] = mkfile(m1, md0, # links(m, dirs), content), pcache[datakey(m, n0)] = mkpentry(true, buf), pcache[datakey(m7, m8)] = mkpentry(false, content3[m8]), m7 = m, n0 * VFS_PAGE_SIZE < m2, afs-cons(dirs, files1[m, mkfile(m3, md, # links(m, dirs), content1[n0, buf])]), afs-cons(dirs, files1), afs-cons(dirs, files0), synced(dirs, icache, pcache0), synced(dirs, icache, pcache), m8 ∈ content3, m ∈ files0, m ∈ files1, datakey(m, n0) ∈ pcache, datakey(m7, m8) ∈ pcache, m7 ∈ files1, datakey(m7, m8) ∈ pcache0 → # buf1 = VFS_PAGE_SIZE ∧ m7 ∈ files0 ∧ (¬ boolvar0 → m8 ∈ content2 ∧ buf1 = content2[m8]), ∀ key0. key0 ∈ pcache → key0.data? ∧ # pcache[key0].page = VFS_PAGE_SIZE ∧ key0.ino ∈ files1 ∧ (¬ pcache[key0].dirty → key0.part ∈ files1[key0.ino].content ∧ pcache[key0].page = files1[key0.ino].content[key0.part]), ∀ key0. key0 ∈ pcache0 → key0.data? ∧ # pcache0[key0].page = VFS_PAGE_SIZE ∧ key0.ino ∈ files0 ∧ (¬ pcache0[key0].dirty → key0.part ∈ files0[key0.ino].content ∧ pcache0[key0].page = files0[key0.ino].content[key0.part]) ⊦ datakey(m7, m8) = datakey(m, n0), m8 ∈ content0 ∧ content3[m8] = content0[m8]

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 135:
# buf = VFS_PAGE_SIZE, pcache0[datakey(m, m8)] = mkpentry(boolvar0, buf1), files0[m] = mkfile(m5, md2, # links(m, dirs), content2), files1[m] = mkfile(m3, md, # links(m, dirs), content1), pcache[datakey(m, m8)] = mkpentry(false, content1[m8]), pcache[datakey(m, n0)] = mkpentry(true, buf), n0 * VFS_PAGE_SIZE < m2, afs-cons(dirs, files0), afs-cons(dirs, files1), afs-cons(dirs, files1[m, mkfile(m3, md, # links(m, dirs), content1[n0, buf])]), synced(dirs, icache, pcache), synced(dirs, icache, pcache0), datakey(m, m8) ∈ pcache, datakey(m, n0) ∈ pcache, m ∈ files1, m ∈ files0, m8 ∈ content1, m8 ∈ content1[n0, buf], datakey(m, m8) ∈ pcache0 → # buf1 = VFS_PAGE_SIZE ∧ (¬ boolvar0 → m8 ∈ content2 ∧ buf1 = content2[m8]), ∀ key0. key0 ∈ pcache0 → key0.data? ∧ # pcache0[key0].page = VFS_PAGE_SIZE ∧ key0.ino ∈ files0 ∧ (¬ pcache0[key0].dirty → key0.part ∈ files0[key0.ino].content ∧ pcache0[key0].page = files0[key0.ino].content[key0.part]), ∀ key0. key0 ∈ pcache → key0.data? ∧ # pcache[key0].page = VFS_PAGE_SIZE ∧ key0.ino ∈ files1 ∧ (¬ pcache[key0].dirty → key0.part ∈ files1[key0.ino].content ∧ pcache[key0].page = files1[key0.ino].content[key0.part]) ⊦ content1[m8] = content1[n0, buf][m8], datakey(m, m8) = datakey(m, n0)

Rule argument

Additional information

Used simplifier rules: ⊦ n ∈ content[n0, buf] ↔ n = n0 ∨ n ∈ content; (ws)%afs-cons-file-nlink: ⊦ afs-cons(dirs, files) ∧ ino ∈ files ∧ files[ino] = mkfile(m, md, n, content) → # links(ino, dirs) = n; (forward) from specification afs-base%⊦ mkfile(m, md, m0, content) = mkfile(m1, md0, m2, content0) ↔ m = m1 ∧ md = md0 ∧ m0 = m2 ∧ content = content0; (ws)