diff --git a/src/main/java/fr/ntr/Main.java b/src/main/java/fr/ntr/Main.java
index bc78260..407ebfe 100644
--- a/src/main/java/fr/ntr/Main.java
+++ b/src/main/java/fr/ntr/Main.java
@@ -10,6 +10,7 @@ import java.util.List;
 import java.util.Objects;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
 
 public class Main {
 
@@ -44,16 +45,23 @@ public class Main {
                     });
             AccessPoint.setTimeSlotNb(timeSlotNb);
             AccessPoint.setSubCarrierNb(subCarrierNb);
-            try(ExecutorService executor = Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors())) {
-                for(int i = 2; i <= maximumLoad; i += 2) {
-                    List<User> users = generateUsers(i, timeSlotNb, subCarrierNb);
-                    ResourceBlock[][] frame = new ResourceBlock[timeSlotNb][subCarrierNb];
-                    Scheduler scheduler = new MaxSNR(frame, users);
-                    // Scheduler scheduler = new ProportionalFair(frame, users);
-                    // Scheduler scheduler = new RoundRobin(frame, users);
-                    AccessPoint accessPoint = new AccessPoint(scheduler, frame, users);
-                    executor.submit(() -> accessPoint.startSimulation(numberOfTicks));
+            ExecutorService executor = Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors());
+            for(int i = 2; i <= maximumLoad; i += 2) {
+                List<User> users = generateUsers(i, timeSlotNb, subCarrierNb);
+                ResourceBlock[][] frame = new ResourceBlock[timeSlotNb][subCarrierNb];
+                Scheduler scheduler = new MaxSNR(frame, users);
+                // Scheduler scheduler = new ProportionalFair(frame, users);
+                // Scheduler scheduler = new RoundRobin(frame, users);
+                AccessPoint accessPoint = new AccessPoint(scheduler, frame, users);
+                executor.submit(() -> accessPoint.startSimulation(numberOfTicks));
+            }
+            executor.shutdown();
+            try {
+                if(!executor.awaitTermination(2, TimeUnit.MINUTES)) {
+                    executor.shutdownNow();
                 }
+            } catch (InterruptedException e) {
+                e.printStackTrace();
             }
         } else {
             System.err.println("Please give launch arguments");