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);
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);