fix sla bini

receiver/challenges/Carbeat.py

@@ -119,7 +119,9 @@ class Carbeat(Challenge):
 
     def exit(self, proc, timeout=1.):
         self._read_until(proc, "> ", timeout=timeout)
-        self._send_line(proc, "3")
+        self._send_line(proc, "4")
+
+
 
     def check(self):
         self._make_logger()
@@ -166,8 +168,8 @@ class Carbeat(Challenge):
                 proc.wait(timeout=2.0)
             except subprocess.TimeoutExpired:
                 proc.kill()
-                raise AssertionError("Program did not exit after option 3")
-            self.logger.info("[ok] service exit on 3")
+                raise AssertionError("Program did not exit after exit command")
+            self.logger.info("[ok] service exit on exit command")
 
             proc_alarm = self._spawn()
             self._read_until(proc_alarm, "zzz", timeout=190.0)  # 180s + slack