nvert_predicate : <span>(<a href="../TypeState/index.html#type-range">TypeState.range</a> <span>&#45;&gt;</span> bool)</span> <span>&#45;&gt;</span> <a href="../../IR/Fieldname/index.html#type-t">IR.Fieldname.t</a> <span>&#45;&gt;</span> <span>(<a href="../../IR/Procname/index.html#type-t">IR.Procname.t</a> * <a href="../TypeState/index.html#type-t">TypeState.t</a>)</span> <span>&#45;&gt;</span> bool</code></dt><dt class="spec value" id="val-predicate_holds_for_some_typestate"><a href="#val-predicate_holds_