[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 296 from proof inv-write (previous step)

m5 + n1 = m5 / VFS_PAGE_SIZE * VFS_PAGE_SIZE + VFS_PAGE_SIZE, of[fd] = mkfile(m, mode, m0), files1[m] = mkfile(m5, md, # links(m, dirs), content0), m5 = n2 + m5 / VFS_PAGE_SIZE * VFS_PAGE_SIZE, dom of < ino3, m5 < m0 + ino4, afs-cons(dirs, files), afs-cons(dirs, files1), of-cons(of, dirs, files), of-cons(of, dirs, files1), m ∈ files1, m5 / VFS_PAGE_SIZE ∈ content0, fd ∈ of, m5 % VFS_PAGE_SIZE + n1 ≤ VFS_PAGE_SIZE, n ≤ # buf0, n2 + n1 ≤ VFS_PAGE_SIZE, ⌊err0⌋ , (m0 ≤ m5 ⊃ m5 ≥ m0;true) ⊦ ino4 = 0, n = 0, n2 = 0, err1 = ESUCCESS ∧ ¬ isdir, mode ≠ MODE_W ∧ mode ≠ MODE_RW, of-cons(of[fd, of[fd].pos:= (m0 + (m0 ≤ m5 ⊃ m5 - m0;0))], dirs, files) ∧ dom of[fd, of[fd].pos:= (m0 + (m0 ≤ m5 ⊃ m5 - m0;0))] < ino3

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 297:
⊦ of-cons(of0, dirs0, files0) → (of-cons(of1, dirs1, files1) ↔ (∀ n. (n ∈ of0 → of0[n].ino ∈ files0) → n ∈ of1 → of1[n].ino ∈ files1))
Proof step 298:
m5 + n1 = m5 / VFS_PAGE_SIZE * VFS_PAGE_SIZE + VFS_PAGE_SIZE, of[fd] = mkfile(m, mode, m0), files1[m] = mkfile(m5, md, # links(m, dirs), content0), m5 = n2 + m5 / VFS_PAGE_SIZE * VFS_PAGE_SIZE, dom of < ino3, m5 < m0 + ino4, afs-cons(dirs, files), afs-cons(dirs, files1), of-cons(of, dirs, files), of-cons(of, dirs, files1), n0 ∈ of, of[n0].ino ∈ files, m ∈ files1, m5 / VFS_PAGE_SIZE ∈ content0, fd ∈ of, n0 ∈ of[fd, mkfile(m, mode, m0 + (m5 - m0))], m5 % VFS_PAGE_SIZE + n1 ≤ VFS_PAGE_SIZE, n ≤ # buf0, n2 + n1 ≤ VFS_PAGE_SIZE, ⌊err0⌋ ⊦ ino4 = 0, n = 0, n2 = 0, of[fd, mkfile(m, mode, m0 + (m0 ≤ m5 ⊃ m5 - m0;0))][n0].ino ∈ files, err1 = ESUCCESS ∧ ¬ isdir, mode ≠ MODE_W ∧ mode ≠ MODE_RW

Rule argument

Additional information

Used simplifier rules: of-cons-reduce: ⊦ of-cons(of0, dirs0, files0) → ( of-cons(of1, dirs1, files1) ↔ (∀ n. (n ∈ of0 → of0[n].ino ∈ files0) → n ∈ of1 → of1[n].ino ∈ files1));% ⊦ m < n → n ≠ 0; (s)%lf-02: ⊦ m < n ∧ m = n0 → n0 < n; (forward) from specification nat-basic%f: ⊦ m < n → n ≠ 0; (forward) from specification nat-basic% ⊦ of[fd] = file ∧ fd ∈ of → of[fd, file] = of; (s)%c: ⊦ m + n = n + m; from specification nat-basic%a: ⊦ (m + n0) + n1 = m + n0 + n1; from specification nat-basic% ⊦ n + 0 = n; (s)% ⊦ m < n → (n ≤ m ↔ false); (s)% ⊦ m ≤ n ↔ ¬ n < m; (ss)%⊦ of-cons(of, dirs, files) ∧ fd ∈ of ∧ of[fd] = mkfile(ino, mode, n) → ino ∈ files; (ss)% ⊦ mkfile(m, mode, m0).ino = m; (s)% ⊦ fd = fd0 → of[fd0, file][fd] = file; (s)% ⊦ fd ∈ of[fd0, file] ↔ fd = fd0 ∨ fd ∈ of; (ws)% ⊦ mkfile(m, mode, m0).pos:= m2 = mkfile(m, mode, m2); (s)% ⊦ fd ∈ of → dom of ++ fd = dom of; (s)% ⊦ dom of[fd, file] = dom of ++ fd; (s)% ⊦ n ≥ m ↔ m ≤ n; (s)