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Proof step 2 from proof truncate-term (previous step)

pageno = inode.size / VFS_PAGE_SIZE, afs-cons(dirs, files), valid-file-inode(inode, dirs, files), buf-opt.none? ∨ # buf-opt.buf = VFS_PAGE_SIZE ⊦ ⟪afs_truncate#(n, pageno; buf-opt, inode, bv, err, dirs, files, asynced)⟫ true

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 3:
inode.nlink = files[inode.ino].nlink, inode.nsubdirs = 0, afs-cons(dirs, files), inode.ino ∈ files, ¬ inode.directory, buf-opt = none ∨ # buf-opt.buf = VFS_PAGE_SIZE ⊦ ⟪afs_truncate#(n, inode.size / VFS_PAGE_SIZE; buf-opt, inode, bv, err, dirs, files, asynced)⟫ true

Rule argument

Additional information

Used simplifier rules: ⊦ buf-opt.none? ↔ buf-opt = none; (s)% ⊦ valid-file-ino(ino, dirs, files) ↔ ino ∈ files; (s)%⊦ valid-file-inode(inode, dirs, files) ↔ valid-file-ino(inode.ino, dirs, files) ∧ inode.nlink = files[inode.ino].nlink ∧ inode.nsubdirs = 0 ∧ ¬ inode.directory; (s)