+ /** @brief Prepares the state for re-exploration following
+ * another after having followed ODPOR from this state with
+ * the current out transition
+ *
+ * After ODPOR has completed searching a maximal trace, it
+ * finds the first point in the execution with a nonempty wakeup
+ * tree. This method corresponds to lines 20 and 21 in the ODPOR
+ * pseudocode
+ */
+ void do_odpor_unwind();