e for doubly-linked lists. Parameter for the higher-order singly-linked list predicate. Means &quot;lambda (root,next,svars). Exists evars. body&quot;. Assume that root, next, svars, evars are disjoint sets of primed identifiers, and include all the free primed identifiers in body. body should not contain any non - primed identifiers or program variables (i.e. pvars).</p><span class="comment-delim">*)</span></td></tr></table></div><div class="spec-doc"><p>an atomic heap predicate</p></div></div><div class="