diff --git a/demo.py b/demo.py
index 736adfe..9b0bb06 100644
--- a/demo.py
+++ b/demo.py
@@ -1,16 +1,24 @@
-import signal
+import concurrent.futures
 import time
 
-def handler(signo, frame):
-    raise RuntimeError("Timeout")
+# Define the function you want to run with a timeout
+def my_task():
+    print("Task started")
+    # Simulate a long-running task
+    time.sleep(5)
+    print("Task completed")
+    return "Task result"
 
-signal.signal(signal.SIGALRM, handler)
+# Main program
+def main():
+    with concurrent.futures.ThreadPoolExecutor(max_workers=1) as executor:
+        future = executor.submit(my_task)
+        try:
+            # Wait for 2 seconds for my_task to complete
+            result = future.result(timeout=2)
+            print(f"Task completed with result: {result}")
+        except concurrent.futures.TimeoutError:
+            print("Task did not complete in time")
 
-while True:
-    try:
-        signal.alarm(5) # seconds
-        time.sleep(10)
-        print("Working...")
-    except Exception as e :
-        print(e)
-        continue
\ No newline at end of file
+if __name__ == "__main__":
+    main()
\ No newline at end of file
diff --git a/run.py b/run.py
index 16c2bba..14cbe00 100644
--- a/run.py
+++ b/run.py
@@ -7,7 +7,9 @@ import json
 import logging
 import os
 import sys
-import signal
+# import signal
+import time
+import timeout_decorator
 
 from desktop_env.envs.desktop_env import DesktopEnv
 from mm_agents.agent import PromptAgent
@@ -47,9 +49,9 @@ logger.addHandler(sdebug_handler)
 logger = logging.getLogger("desktopenv.experiment")
 
 # make sure each example won't exceed the time limit
-def handler(signo, frame):
-    raise RuntimeError("Time limit exceeded!")
-signal.signal(signal.SIGALRM, handler)
+# def handler(signo, frame):
+#     raise RuntimeError("Time limit exceeded!")
+# signal.signal(signal.SIGALRM, handler)
 
 def config() -> argparse.Namespace:
     parser = argparse.ArgumentParser(
@@ -148,9 +150,9 @@ def test(
             )
             os.makedirs(example_result_dir, exist_ok=True)
 
-            # example start running
-            try:
-                signal.alarm(time_limit)
+
+            @timeout_decorator.timeout(seconds=time_limit, timeout_exception=RuntimeError, exception_message="Time limit exceeded.")
+            def run_single_example(agent, env, example, max_steps, instruction, args, example_result_dir, scores):
                 agent.reset()
                 obs = env.reset(task_config=example)
                 done = False
@@ -201,24 +203,20 @@ def test(
                 logger.info("Result: %.2f", result)
                 scores.append(result)
                 env.controller.end_recording(os.path.join(example_result_dir, "recording.mp4"))
+
+            # example start running
+            try:
+                # signal.alarm(time_limit)
+                run_single_example(agent, env, example, max_steps, instruction, args, example_result_dir, scores)  
             except RuntimeError as e:
                 logger.error(f"Error in example {domain}/{example_id}: {e}")
                 # save info of this example and then continue
-                try:
-                    env.controller.end_recording(os.path.join(example_result_dir, "recording.mp4"))
-                    with open(os.path.join(example_result_dir, "traj.jsonl"), "a") as f:
-                        f.write(json.dumps({
-                            "Error": f"Error in example {domain}/{example_id}: {e}",
-                            "step": step_idx + 1,
-                        }))
-                        f.write("\n")
-                except Exception as new_e:
-                    with open(os.path.join(example_result_dir, "traj.jsonl"), "a") as f:
-                        f.write(json.dumps({
-                            "Error": f"Error in example {domain}/{example_id}: {e} and {new_e}",
-                            "step": "before start recording",
-                        }))
-                        f.write("\n")        
+                env.controller.end_recording(os.path.join(example_result_dir, "recording.mp4"))
+                with open(os.path.join(example_result_dir, "traj.jsonl"), "a") as f:
+                    f.write(json.dumps({
+                        "Error": f"Error in example {domain}/{example_id}: {e}"
+                    }))
+                    f.write("\n")    
                 continue
     env.close()
     logger.info(f"Average score: {sum(scores) / len(scores)}")
@@ -232,9 +230,18 @@ def get_unfinished(action_space, use_model, observation_type, result_dir, total_
     
     finished = {}
     for domain in os.listdir(target_dir):
+        finished[domain] = []
         domain_path = os.path.join(target_dir, domain)
         if os.path.isdir(domain_path):
-            finished[domain] = os.listdir(domain_path)
+           for example_id in os.listdir(domain_path):
+                example_path = os.path.join(domain_path, example_id)
+                if os.path.isdir(example_path):
+                    if "result.txt" not in os.listdir(example_path):
+                        # empty all files under example_id
+                        for file in os.listdir(example_path):
+                            os.remove(os.path.join(example_path, file))
+                    else:
+                        finished[domain].append(example_id)
 
     if not finished:
         return total_file_json
@@ -259,4 +266,5 @@ if __name__ == '__main__':
         left_info += f"{domain}: {len(test_file_list[domain])}\n"
     logger.info(f"Left tasks:\n{left_info}")
 
+    os.environ['OPENAI_API_KEY'] = "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"
     test(args, test_all_meta)
\ No newline at end of file