+/********************************** Double-DFS for liveness property**************************************/
+
+typedef struct s_mc_pair{
+ mc_snapshot_t system_state;
+ mc_state_t graph_state;
+ xbt_state_t automaton_state;
+}s_mc_pair_t, *mc_pair_t;
+
+typedef struct s_mc_pair_reached{
+ xbt_state_t automaton_state;
+ xbt_dynar_t prop_ato;
+ mc_snapshot_t system_state;
+}s_mc_pair_reached_t, *mc_pair_reached_t;
+
+extern xbt_fifo_t mc_stack_liveness_stateful;
+
+int MC_automaton_evaluate_label(xbt_automaton_t a, xbt_exp_label_t l);
+mc_pair_t new_pair(mc_snapshot_t sn, mc_state_t sg, xbt_state_t st);
+
+int reached(xbt_automaton_t a);
+int set_pair_reached(xbt_automaton_t a);
+int snapshot_compare(mc_snapshot_t s1, mc_snapshot_t s2);
+void MC_show_stack_liveness_stateful(xbt_fifo_t stack);
+void MC_dump_stack_liveness_stateful(xbt_fifo_t stack);
+void MC_pair_delete(mc_pair_t pair);
+void MC_exit_liveness(void);
+mc_state_t MC_state_pair_new(void);
+
+/* **** Double-DFS stateful without visited state **** */
+
+void MC_ddfs_stateful_init(xbt_automaton_t a);
+void MC_ddfs_stateful(xbt_automaton_t a, int search_cycle, int restore);
+
+/* **** Double-DFS stateless **** */
+
+typedef struct s_mc_pair_stateless{
+ mc_state_t graph_state;
+ xbt_state_t automaton_state;
+}s_mc_pair_stateless_t, *mc_pair_stateless_t;
+
+extern xbt_fifo_t mc_stack_liveness_stateless;
+
+mc_pair_stateless_t new_pair_stateless(mc_state_t sg, xbt_state_t st);
+void MC_ddfs_stateless_init(xbt_automaton_t a);
+void MC_ddfs_stateless(xbt_automaton_t a, int search_cycle, int replay);
+void MC_show_stack_liveness_stateless(xbt_fifo_t stack);
+void MC_dump_stack_liveness_stateless(xbt_fifo_t stack);
+void MC_pair_stateless_delete(mc_pair_stateless_t pair);
+
+/********************************** DPOR for safety (stateless) **************************************/
+void MC_dpor_init(void);
+void MC_dpor(void);
+void MC_dpor_exit(void);
+
+/***** DPOR for safety (stateful) **** */
+
+typedef struct s_mc_state_with_snapshot{
+ mc_snapshot_t system_state;
+ mc_state_t graph_state;
+}s_mc_state_ws_t, *mc_state_ws_t;
+
+extern xbt_fifo_t mc_stack_safety_stateful;
+
+void MC_init_stateful(void);
+void MC_modelcheck_stateful(void);
+mc_state_ws_t new_state_ws(mc_snapshot_t s, mc_state_t gs);
+void MC_dpor_stateful_init(void);
+void MC_dpor_stateful(void);
+void MC_exit_stateful(void);
+