| ((abs(tree, ino0) * D))(dirs), ispath(p, ino0, ino1, dirs, files), ino1 ∈ files, p ∈ tree ⊦ tree[p] = fnode(⌜ino1⌝ ), ino1 ∈ dirs |
((abs(tree, ino0) * D))(dirs), ispath(p, ino0, ino1, dirs, files), p ∈ tree, ino1 ∈ files ⊦ tree[p] = fnode(⌜ino1⌝ ), ino1 ∈ dirs