[Imprint][Data Privacy Statement][E-Mail]



View long theorem info. View the proof. Back to main index. View the specification. View theorem base summary, View theorem base listing, the used properties by spec, the dependency list, the symbol table,

Proof step 195 from proof inv-write (previous step)

m1 + n1 = m1 / VFS_PAGE_SIZE * VFS_PAGE_SIZE + VFS_PAGE_SIZE, VFS_PAGE_SIZE = n3 + (m0 + ino0) % VFS_PAGE_SIZE, of[fd] = mkfile(m, mode, m0), files1[m] = mkfile(m1, md1, # links(m, dirs), content0), dirs[m] = mkdir(m8, md3, m9, m10, entries), files[m] = mkfile(m2, md0, m7, content), m1 = n2 + m1 / VFS_PAGE_SIZE * VFS_PAGE_SIZE, dom of < ino3, afs-cons(dirs, files), afs-cons(dirs, files1), of-cons (of, dirs, files[m, mkfile(m2, md0, m7, content[(m0 + ino0) / VFS_PAGE_SIZE, copy(buf0, ino0, zeropage, (m0 + ino0) % VFS_PAGE_SIZE, min(n4, n3))])]), of-cons(of, dirs, files1), of-cons(of, dirs, files), fd ∈ of, m1 / VFS_PAGE_SIZE ∈ content0, m ∈ files1, ROOT_INO ∈ dirs, ino0 + min(n4, n3) ≤ # buf0, (m0 + ino0) % VFS_PAGE_SIZE + min(n4, n3) ≤ VFS_PAGE_SIZE, n2 + n1 ≤ VFS_PAGE_SIZE, n4 + ino0 ≤ # buf0, ino0 ≤ # buf0 ⊦ n4 + ino0 = 0, min(n4, n3) = 0, n2 = 0, (m0 + ino0) / VFS_PAGE_SIZE ∈ content, mode ≠ MODE_W ∧ mode ≠ MODE_RW, (m ∈ files → m7 = # links(m, dirs)) ∧ ( m ∈ files ∧ n ∈ content[(m0 + ino0) / VFS_PAGE_SIZE, copy(buf0, ino0, zeropage, (m0 + ino0) % VFS_PAGE_SIZE, min(n4, n3))] → # content[(m0 + ino0) / VFS_PAGE_SIZE, copy(buf0, ino0, zeropage, (m0 + ino0) % VFS_PAGE_SIZE, min(n4, n3))][n] = VFS_PAGE_SIZE)

Heuristic nonsplitting cut applied rule cut formula

And closed the goal!

Rule argument

fma: n = (m0 + ino0) / VFS_PAGE_SIZE

Additional information

Used simplifier rules: ⊦ n ≠ n0 → (n ∈ content[n0, buf] ↔ n ∈ content); (s)% ⊦ n ∈ content ∧ ¬ n0 ∈ content → content[n0, buf][n] = content[n]; (s)%⊦ afs-cons(dirs, files) ∧ ino ∈ files ∧ files[ino] = mkfile(m, md, n0, content) ∧ n ∈ content → # content[n] = VFS_PAGE_SIZE; (s)%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% ⊦ n ∈ content[n0, buf] ↔ n = n0 ∨ n ∈ content; (ws)% ⊦ content[n, buf][n] = buf; (s)% ⊦ # copy(buf, m, buf0, m0, n) = # buf0; (s)% ⊦ # zeropage = VFS_PAGE_SIZE; (s) Used formulas: n = (m0 + ino0) / VFS_PAGE_SIZE