static unsigned style_flags = 0;
static unsigned do_stats = 0;
static cost_fct_t cost_func = co_get_costs_exec_freq;
-static unsigned algo = CO_ALGO_HEUR;
+static unsigned algo = CO_ALGO_HEUR4;
static int improve = 1;
static const lc_opt_enum_mask_items_t dump_items[] = {