int _sg_mc_sparse_checkpoint = 0;
int _sg_mc_soft_dirty = 0;
int _sg_mc_ksm = 0;
-char *_sg_mc_property_file = NULL;
+char *_sg_mc_property_file = nullptr;
int _sg_mc_hash = 0;
int _sg_mc_max_depth = 1000;
int _sg_mc_visited = 0;
-char *_sg_mc_dot_output_file = NULL;
+char *_sg_mc_dot_output_file = nullptr;
int _sg_mc_comms_determinism = 0;
int _sg_mc_send_determinism = 0;
int _sg_mc_safety = 0;