#fixed code
                                @Override
    public boolean isTerminated(ContainerCreationStatus container) {
        List<String> termStates = Arrays.asList("complete", "failed", "shutdown", "rejected", "orphaned", "removed");
        String containerId = container.getContainerId();

        try {
            List<Task> tasks = dockerClient.listTasks();
            for (Task task : tasks) {
                TaskStatus taskStatus = task.status();
                ContainerStatus containerStatus = taskStatus.containerStatus();
                if (containerStatus != null && containerStatus.containerId().equals(containerId)) {
                    String state = taskStatus.state();
                    return termStates.contains(state);
                }
            }
            return false;
        } catch (DockerException | InterruptedException e) {
            logger.warn("Failed to fetch container status [" + container + "].", e);
            return false;
        }
    }
#vulnerable code 
                                @Override
    public boolean isTerminated(ContainerCreationStatus container) {
        List<String> termStates = Arrays.asList("complete", "failed", "shutdown", "rejected", "orphaned", "removed");
        String containerId = container.getContainerId();

        try {
            List<Task> tasks = dockerClient.listTasks();
            for (Task task : tasks) {
                TaskStatus taskStatus = task.status();
                String state = taskStatus.state();
                if (termStates.contains(state)) {
                    return taskStatus.containerStatus().containerId().equals(containerId);
                }
            }
            return false;
        } catch (DockerException | InterruptedException e) {
            logger.warn("Failed to fetch container status [" + container + "].", e);
            return false;
        }
    } 
                            #location 12 
                            #vulnerability type NULL_DEREFERENCE