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Proof step 70 from proof inv-truncate (previous step)

files[ino2] = mkfile(m, md, # links(ino2, dirs), content), buf-opt = none, err = ESUCCESS, ino = 0, ino0 = 0, inode = mkinode(ino2, md, false, # links(ino2, dirs), 0, m), afs-cons(dirs, files), ispath(p, ROOT_INO, ino2, dirs, files), of-cons(of, dirs, files), pw(user, md), px-parent(user, p, ROOT_INO, dirs, files), ino2 ∈ files, ¬ ino2 ∈ dirs ⊦ [afs_truncate_internal#(n, m / VFS_PAGE_SIZE; inode, buf-opt, ino0, ino, isdir, err, dirs, files; asynced)] (afs-cons(dirs, files) → of-cons(of, dirs, files))

Heuristic unfold applied rule call right

And obtained the following new goals

Proof step 71:
files[ino2] = mkfile(m, md, # links(ino2, dirs), content), buf-opt = none, err = ESUCCESS, ino = 0, ino0 = ino, ino1 = ino3, ino3 = 0, inode = mkinode(ino2, md, false, # links(ino2, dirs), 0, m), pageno = m / VFS_PAGE_SIZE, afs-cons(dirs, files), ispath(p, ROOT_INO, ino2, dirs, files), of-cons(of, dirs, files), pw(user, md), px-parent(user, p, ROOT_INO, dirs, files), ino2 ∈ files ⊦ [ let ino = inode.ino, content = files[inode.ino].content, buf = ? in {ino1 := inode.size % VFS_PAGE_SIZE, ino0 := min(n, inode.size); isdir := inode.size ≤ n ∧ ino1 ≠ 0 ∧ (pageno ∈ content ∨ buf-opt.some?); if isdir then {if buf-opt.some? then buf := buf-opt.buf else buf := files[ino].content[pageno]; buf := fill(buf, zero, ino1, VFS_PAGE_SIZE - ino1); content[pageno] := buf; buf-opt := some(buf)}; files[ino].content := content upto ino0; let new_inode = inode in {new_inode.size := n; afs_inode_sync#(new_inode; dirs, files)}; inode := getinode(inode.ino, dirs, files); err := ESUCCESS} or fail#(; ; err); asynced := ?] (afs-cons(dirs, files) → of-cons(of, dirs, files)), VFS_PAGE_SIZE = 0, ino2 ∈ dirs

Rule argument

pos: right 1

Additional information

Used simplifier rules: afs_truncate_internal# (N, PAGENO ; INODE, PBUF-OPT, OFFSET, SIZE, MODIFIED, ERR, DIRS, FILES ; ASYNCED ) { let INO = INODE.ino, CONTENT = FILES[INODE.ino].content, PBUF = ? in {OFFSET := INODE.size % VFS_PAGE_SIZE, SIZE := min(N, INODE.size); MODIFIED := INODE.size ≤ N ∧ OFFSET ≠ 0 ∧ (PAGENO ∈ CONTENT ∨ PBUF-OPT.some?); if MODIFIED then {if PBUF-OPT.some? then PBUF := PBUF-OPT.buf else PBUF := FILES[INO].content[PAGENO]; PBUF := fill(PBUF, zero, OFFSET, VFS_PAGE_SIZE - OFFSET); CONTENT[PAGENO] := PBUF; PBUF-OPT := some(PBUF)}; FILES[INO].content := CONTENT upto SIZE; let NEW_INODE = INODE in {NEW_INODE.size := N; afs_inode_sync#(NEW_INODE; DIRS, FILES)}; INODE := getinode(INODE.ino, DIRS, FILES); ERR := ESUCCESS} or fail#(; ; ERR); ASYNCED := ? };