diff --git a/AlgebraicDataflowArchitectureModel/src/models/controlFlowModel/ControlFlowGraph.java b/AlgebraicDataflowArchitectureModel/src/models/controlFlowModel/ControlFlowGraph.java
index 1e75630..ed1b0e4 100644
--- a/AlgebraicDataflowArchitectureModel/src/models/controlFlowModel/ControlFlowGraph.java
+++ b/AlgebraicDataflowArchitectureModel/src/models/controlFlowModel/ControlFlowGraph.java
@@ -22,9 +22,9 @@
  * @implNote Some nodes are shared between push and pull call graphs.
  */
 public class ControlFlowGraph extends DirectedGraph implements IFlowGraph {
-	private DataFlowGraph dataFlowGraph;
-	private CallGraph pushCallGraph;
-	private CallGraph pullCallGraph;
+	private final DataFlowGraph dataFlowGraph;
+	private final CallGraph pushCallGraph;
+	private final CallGraph pullCallGraph;
 	
 	public ControlFlowGraph(DataFlowGraph dataFlowGraph, DataTransferModel model) {
 		this.dataFlowGraph = dataFlowGraph;
@@ -71,13 +71,6 @@
 				}
 			}
 		}
-		
-		for (Node node : pushCallGraph.getNodes()) {
-			System.out.println(node.toString());
-		}
-		for (Node node : pullCallGraph.getNodes()) {
-			System.out.println(node.toString());
-		}
 	}
 	
 	public DataFlowGraph getDataFlowGraph() {