[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 47 from proof refine-open (previous step)

isdir ↔ false, root[path].dir? ↔ ino0 ∈ dirs, getinode(ino, dirs, files).directory ↔ isdir, err = ESUCCESS, err1 = EACCESS, err2 = err3, err3 = ESUCCESS, fd = ino1, ino = ino0, ofh = abs-of(of), root.dir?, dom of < ino2, abs(root, ROOT_INO)(dirs), afs-cons(dirs, files), fids-cons(root, abs-files(files), abs-of(of)), ispath(path, ROOT_INO, ino0, dirs, files), of-cons(of, dirs, files), pre-iget(ino, dirs, files), px-parent(user, path, ROOT_INO, dirs, files), psynced → asynced, (mode = MODE_R ∨ mode = MODE_RW) ∧ ¬ pr(user, getinode(ino, dirs, files).meta) ∨ (mode = MODE_W ∨ mode = MODE_RW) ∧ ¬ pw(user, getinode(ino, dirs, files).meta) ⊦ [if err1 = ESUCCESS then {of[ino2] := mkfile(ino0, mode, 0); fd := ino2; ino2 := ino2 + 1}] ( of-cons(of, dirs, files) ∧ dom of < ino2 → ⟨posix_open#(path, mode, user, root, abs-files(files); ino1, err0, ofh)⟩ (ofh = abs-of(of) ∧ (psynced → asynced) ∧ fd = ino1 ∧ err1 = err0))

Heuristic symbolic execution applied rule if negative right

And obtained the following new goals

Proof step 48:
getinode(ino, dirs, files).directory ↔ isdir, root[path].dir? ↔ ino0 ∈ dirs, isdir ↔ false, err = ESUCCESS, err1 = EACCESS, err2 = err3, err3 = ESUCCESS, fd = ino1, ino = ino0, ofh = abs-of(of), root.dir?, dom of < ino2, abs(root, ROOT_INO)(dirs), afs-cons(dirs, files), fids-cons(root, abs-files(files), abs-of(of)), ispath(path, ROOT_INO, ino0, dirs, files), of-cons(of, dirs, files), pre-iget(ino, dirs, files), px-parent(user, path, ROOT_INO, dirs, files), psynced → asynced, (mode = MODE_R ∨ mode = MODE_RW) ∧ ¬ pr(user, getinode(ino, dirs, files).meta) ∨ (mode = MODE_W ∨ mode = MODE_RW) ∧ ¬ pw(user, getinode(ino, dirs, files).meta) ⊦ [skip] ( of-cons(of, dirs, files) ∧ dom of < ino2 → ⟨posix_open#(path, mode, user, root, abs-files(files); ino1, err0, ofh)⟩ (ofh = abs-of(of) ∧ (psynced → asynced) ∧ fd = ino1 ∧ err1 = err0))

Rule argument

pos: right 1

Additional information

Used simplifier rules: ⊦ ESUCCESS ≠ EACCESS; (s)