+ uint32_t get_expl_count() { return exploration_count; }
+ uint32_t get_fail_count() { return failure_count; }
+ uint32_t get_store_visible_count() { return store_visible_count; }
+ uint32_t get_total_checking_count() { return total_checking_count; }
+
+ void incr_expl_count() { exploration_count++; }
+ void incr_fail_count() { failure_count++; }
+ void incr_store_visible_count() { store_visible_count++; }
+ void incr_total_checking_count() { total_checking_count++; }
+
+ uint32_t get_depth() { return depth; }
+ void set_depth(uint32_t depth_) { depth = depth_; }
+