routesearch: use presolver

diff --git a/yarrg/rsvalue.c b/yarrg/rsvalue.c
index 3bf98b47b397f8bca433d55045b193305de099c2..30e561243135602bcae853b5f2f6b1d32138bb30 100644 (file)
--- a/yarrg/rsvalue.c
+++ b/yarrg/rsvalue.c
@@ -198,6 +198,7 @@ double value_route(int nislands, const int *islands, int exclude_arbitrage) {
   lp= lpx_create_prob();
   lpx_set_obj_dir(lp, LPX_MAX);
   lpx_set_int_parm(lp, LPX_K_MSGLEV, DEBUGP(lp) ? 3 : 1);
+  lpx_set_int_parm(lp, LPX_K_PRESOL, 1);
 
   if (DEBUGP(value)) {
     lpx_set_prob_name(lp,(char*)"value_route");