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Proof step 25 from proof truncate-smaller (previous step)

files[m] = mkfile(m0, md0, # links(m, dirs), content0), buf-opt = none, content = files[inode.ino].content, files0 = files, ino = inode.ino, inode = mkinode(m, md, false, # links(m, dirs), 0, m2), new_inode = inode, old_ino = min(n, inode.size), old_ino0 = inode.size % VFS_PAGE_SIZE, old_ino1 = 0, old_ino2 = 0, pageno = m2 / VFS_PAGE_SIZE, afs-cons(dirs, files), m ∈ files, pageno ∈ files[ino].content, old_ino0 + (VFS_PAGE_SIZE - old_ino0) ≤ # files[ino].content[pageno], n ≤ m2, inode.size ≤ n, VFS_PAGE_SIZE ≥ old_ino0, pageno ∈ content ∨ buf-opt.some? ⊦ [new_inode.size := n; files1 := files[ino, files[ino].content:= (content[pageno, fill(files[ino].content[pageno], zero, old_ino0, VFS_PAGE_SIZE - old_ino0)] upto old_ino)]; afs_inode_sync#(new_inode; dirs, files1); inode := getinode(inode.ino, dirs, files1); err := ESUCCESS; asynced := ?] (err = ESUCCESS ⊃ files1[inode.ino].content.stream to files1[inode.ino].size = files0[inode.ino].content.stream to files1[inode.ino].size ∧ inode.ino ∈ files1 ∧ n = files1[inode.ino].size ∧ files0[inode.ino].nlink = files1[inode.ino].nlink ∧ files0 -- inode.ino = files1 -- inode.ino ;⌊err⌋ ∧ files0 = files1 ), VFS_PAGE_SIZE = 0, old_ino0 = 0

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Rule argument

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