model-checker: take snapshot if property file set

diff --git a/src/mc/mc_checkpoint.c b/src/mc/mc_checkpoint.c
index ee78c2d..5c094fb 100644 (file)
--- a/src/mc/mc_checkpoint.c
+++ b/src/mc/mc_checkpoint.c
@@ -245,7 +245,7 @@ mc_snapshot_t MC_take_snapshot()
     }
   }
 
-  if(_surf_mc_visited > 0 || _surf_mc_property_file)
+  if(_surf_mc_visited > 0 || strcmp(_surf_mc_property_file,""))
     snapshot->stacks = take_snapshot_stacks(heap);
   
   free_memory_map(maps);