diff --git a/orio/module/loop/cfg.py b/orio/module/loop/cfg.py
index 7add60fe..ebee90e7 100644
--- a/orio/module/loop/cfg.py
+++ b/orio/module/loop/cfg.py
@@ -112,6 +112,7 @@ def visit(self, nodes, params={}):
         try:
             for node in nodes:
                 if not node: continue
+                v = CFGVertex(node.id, node)
                 if isinstance(node, ast.ForStmt):
                     self.display(node)
                     # Children: header: node.init, node.test, node.iter; body: node.stmt
diff --git a/testsuite/SPAPT/lu/lu.src1.c b/testsuite/SPAPT/lu/lu.src1.c
index bf038ae5..b9c81647 100644
--- a/testsuite/SPAPT/lu/lu.src1.c
+++ b/testsuite/SPAPT/lu/lu.src1.c
@@ -34,6 +34,7 @@
 
 
         
+    param U1_K[]  = [1];
     param U1_J[]  = range(1,31); 
     param VEC1[] = [False,True];
     
@@ -77,12 +78,12 @@ int iii, jjj, kkk;
 
 /*@ begin Loop (
 
-for (k=0; k<=N-1; k++) {
    transform Composite(
-      unrolljam = (['j'],[U1_J]),
+      unrolljam = (['k','j'],[U1_K,U1_J]),
       scalarreplace = (SCR, 'double'),
       vector = (VEC1, ['ivdep','vector always'])
      )
+  for (k=0; k<=N-1; k++) {
     for (j=k+1; j<=N-1; j++)
       A[k][j] = A[k][j]/A[k][k];