[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 291 from proof inv-write (previous step)

m5 + n1 = m5 / VFS_PAGE_SIZE * VFS_PAGE_SIZE + VFS_PAGE_SIZE, files1[m] = mkfile(m5, md, # links(m, dirs), content0), of[fd] = mkfile(m, mode, m0), dirs1 = dirs, err = err0, err2 = ESUCCESS, m5 = n2 + m5 / VFS_PAGE_SIZE * VFS_PAGE_SIZE, m5 < m0 + ino4, dom of < ino3, afs-cons(dirs, files1), afs-cons(dirs, files), of-cons(of, dirs, files1), of-cons(of, dirs, files), fd ∈ of, m5 / VFS_PAGE_SIZE ∈ content0, m ∈ files1, n2 + n1 ≤ VFS_PAGE_SIZE, n ≤ # buf0, m5 % VFS_PAGE_SIZE + n1 ≤ VFS_PAGE_SIZE, ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ [skip; if err ≠ ESUCCESS then ino4 := (m0 ≤ m5 ⊃ m5 - m0;0), err := ESUCCESS; of[fd].pos := m0 + ino4] (dirs1 = dirs → of-cons(of, dirs, files) ∧ dom of < ino3 ∧ afs-cons(dirs, files)), err = ESUCCESS, ino4 = 0, n = 0, n2 = 0, mode ≠ MODE_W ∧ mode ≠ MODE_RW, err1 = ESUCCESS ∧ ¬ isdir

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 292:
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, ino4 ≠ 0, n ≠ 0, n2 ≠ 0, 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⌋ ⊦ [skip; if err0 ≠ ESUCCESS then ino4 := (m0 ≤ m5 ⊃ m5 - m0;0), err0 := ESUCCESS; of[fd].pos := m0 + ino4] (of-cons(of, dirs, files) ∧ dom of < ino3), err1 = ESUCCESS ∧ ¬ isdir, mode ≠ MODE_W ∧ mode ≠ MODE_RW

Rule argument

Additional information

Used simplifier rules: ⊦ ⌊err⌋ → err ≠ ESUCCESS; (s)