diff --git a/src/main/java/myutil/RotatingIcon.java b/src/main/java/myutil/RotatingIcon.java
new file mode 100644
index 0000000000000000000000000000000000000000..1d41de1566144058549cf0891ce992a303b62d15
--- /dev/null
+++ b/src/main/java/myutil/RotatingIcon.java
@@ -0,0 +1,115 @@
+/* Copyright or (C) or Copr. GET / ENST, Telecom-Paris, Ludovic Apvrille
+ * 
+ * ludovic.apvrille AT enst.fr
+ * 
+ * This software is a computer program whose purpose is to allow the
+ * edition of TURTLE analysis, design and deployment diagrams, to
+ * allow the generation of RT-LOTOS or Java code from this diagram,
+ * and at last to allow the analysis of formal validation traces
+ * obtained from external tools, e.g. RTL from LAAS-CNRS and CADP
+ * from INRIA Rhone-Alpes.
+ * 
+ * This software is governed by the CeCILL  license under French law and
+ * abiding by the rules of distribution of free software.  You can  use,
+ * modify and/ or redistribute the software under the terms of the CeCILL
+ * license as circulated by CEA, CNRS and INRIA at the following URL
+ * "http://www.cecill.info".
+ * 
+ * As a counterpart to the access to the source code and  rights to copy,
+ * modify and redistribute granted by the license, users are provided only
+ * with a limited warranty  and the software's author,  the holder of the
+ * economic rights,  and the successive licensors  have only  limited
+ * liability.
+ * 
+ * In this respect, the user's attention is drawn to the risks associated
+ * with loading,  using,  modifying and/or developing or reproducing the
+ * software by the user in light of its specific status of free software,
+ * that may mean  that it is complicated to manipulate,  and  that  also
+ * therefore means  that it is reserved for developers  and  experienced
+ * professionals having in-depth computer knowledge. Users are therefore
+ * encouraged to load and test the software's suitability as regards their
+ * requirements in conditions enabling the security of their systems and/or
+ * data to be ensured and,  more generally, to use and operate it in the
+ * same conditions as regards security.
+ * 
+ * The fact that you are presently reading this means that you have had
+ * knowledge of the CeCILL license and that you accept its terms.
+ */
+
+
+
+
+
+package myutil;
+
+import javax.swing.*;
+import java.awt.*;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.awt.image.BufferedImage;
+
+
+/**
+* Class RotatingIcon
+* Creation: 30/05/2024
+* @version 1.1 30/05/2024
+* @author Ludovic APVRILLE
+*/
+public final class RotatingIcon {
+
+    private final Timer timer;
+    private final JButton button;
+    private final Icon icon;
+    private int angle;
+    private boolean rotating;
+
+    public RotatingIcon(JButton component, Icon icon) {
+        this.button = component;
+        this.icon = icon;
+        this.angle = 0;
+        this.rotating = false;
+
+        // Update the icon at regular intervals
+        timer = new Timer(100, new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+                angle += 10; // Increment the angle
+                if (angle >= 360) {
+                    angle = 0;
+                }
+                updateIcon();
+            }
+        });
+    }
+
+    public void start() {
+        if (!rotating) {
+            rotating = true;
+            timer.start();
+        }
+    }
+
+    public void stop() {
+        if (rotating) {
+            rotating = false;
+            timer.stop();
+        }
+        button.setIcon(icon);
+    }
+
+    private void updateIcon() {
+        // Create a rotated version of the original icon
+        BufferedImage image = new BufferedImage(icon.getIconWidth(), icon.getIconHeight(), BufferedImage.TYPE_INT_ARGB);
+        Graphics2D g2d = image.createGraphics();
+        g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
+        g2d.rotate(Math.toRadians(angle), icon.getIconWidth() / 2, icon.getIconHeight() / 2);
+        icon.paintIcon(null, g2d, 0, 0);
+        g2d.dispose();
+
+        // Set the rotated icon on the component
+        button.setIcon(new ImageIcon(image));
+        button.repaint();
+    }
+
+
+}
diff --git a/src/main/java/ui/window/JDialogProverifVerification.java b/src/main/java/ui/window/JDialogProverifVerification.java
index a43944507d8ad1b030d25e3ad68517092a9ee5c4..965464b321d0b32179b55197d548368906b49e86 100644
--- a/src/main/java/ui/window/JDialogProverifVerification.java
+++ b/src/main/java/ui/window/JDialogProverifVerification.java
@@ -81,10 +81,7 @@ import common.SpecConfigTTool;
 import launcher.LauncherException;
 import launcher.RshClient;
 import launcher.RshClientReader;
-import myutil.FileException;
-import myutil.GraphicLib;
-import myutil.MasterProcessInterface;
-import myutil.TraceManager;
+import myutil.*;
 import proverifspec.ProVerifOutputAnalyzer;
 import proverifspec.ProVerifOutputListener;
 import proverifspec.ProVerifQueryAuthResult;
@@ -141,6 +138,8 @@ public class JDialogProverifVerification extends JDialog implements ActionListen
     protected final static int STARTED = 2;
     protected final static int STOPPED = 3;
 
+    private RotatingIcon ri;
+
 
 
     TURTLEPanel currPanel;
@@ -1080,6 +1079,7 @@ public class JDialogProverifVerification extends JDialog implements ActionListen
 
 
         jp1.add("Security Verification", jp01);
+        jp1.setIconAt(0, IconManager.imgic9);
 
         if (currPanel instanceof TMLArchiPanel) {
             //Can only secure a mapping
@@ -1808,12 +1808,17 @@ public class JDialogProverifVerification extends JDialog implements ActionListen
                 stop.setEnabled(false);
                 close.setEnabled(true);
                 getGlassPane().setVisible(false);
+                if (ri != null) {
+                    ri.stop();
+                }
                 break;
             case STARTED:
                 startButton.setEnabled(false);
                 stop.setEnabled(true);
                 close.setEnabled(false);
                 getGlassPane().setVisible(true);
+                ri = new RotatingIcon(stop, IconManager.imgic55);
+                ri.start();
                 break;
             case STOPPED:
             default:
@@ -1821,6 +1826,9 @@ public class JDialogProverifVerification extends JDialog implements ActionListen
                 stop.setEnabled(false);
                 close.setEnabled(true);
                 getGlassPane().setVisible(false);
+                if (ri != null) {
+                    ri.stop();
+                }
                 break;
         }
     }