trace

diff --git a/src/main/java/br/ufrgs/inf/prosoft/trace/Trace.java b/src/main/java/br/ufrgs/inf/prosoft/trace/Trace.java
index 8c28fdb..bb3c1dc 100644
--- a/src/main/java/br/ufrgs/inf/prosoft/trace/Trace.java
+++ b/src/main/java/br/ufrgs/inf/prosoft/trace/Trace.java
@@ -57,4 +57,8 @@ public abstract class Trace {
         return u;
     }
 
+    public long getExecutionTime() {
+        return getEndTime() - getStartTime();
+    }
+
 }