Program: 3801
Project: 3801
Buggy source:
private BTTorrentFileDownloader createDownloader(URI uri){
  BTTorrentFileDownloader torrentFileDownloaderImpl=new BTTorrentFileDownloaderImpl(new DownloadManager(){
    @Override public boolean acceptPushedSocket(    String file,    int index,    byte[] clientGUID,    Socket socket){
      return false;
    }
    @Override public void addNewDownloader(    CoreDownloader downloader){
    }
    @Override public void bumpPriority(    Downloader downl,    boolean up,    int amt){
    }
    @Override public boolean conflicts(    URN urn,    long fileSize,    File... fileName){
      return false;
    }
    @Override public Downloader download(    RemoteFileDesc[] files,    List<? extends RemoteFileDesc> alts,    GUID queryGUID,    boolean overwrite,    File saveDir,    String fileName) throws DownloadException {
      return null;
    }
    @Override public Downloader download(    MagnetOptions magnet,    boolean overwrite,    File saveDir,    String fileName) throws IllegalArgumentException, DownloadException {
      return null;
    }
    @Override public Downloader download(    File incompleteFile) throws CantResumeException, DownloadException {
      return null;
    }
    @Override public Downloader download(    DownloadInformation info,    long now) throws DownloadException {
      return null;
    }
    @Override public Downloader downloadFromMozilla(    MozillaDownload listener){
      return null;
    }
    @Override public Downloader downloadFromStore(    RemoteFileDesc rfd,    boolean overwrite,    File saveDir,    String fileName) throws IllegalArgumentException, DownloadException {
      return null;
    }
    @Override public Downloader downloadTorrent(    URI torrentURI,    boolean overwrite) throws DownloadException {
      return null;
    }
    @Override public Downloader downloadTorrent(    File torrentFile,    File saveDirectory,    boolean overwrite) throws DownloadException {
      return null;
    }
    @Override public int downloadsInProgress(){
      return 0;
    }
    @Override public Iterable<CoreDownloader> getAllDownloaders(){
      return null;
    }
    @Override public float getAverageBandwidth(){
      return 0;
    }
    @Override public Downloader getDownloaderForIncompleteFile(    File file){
      return null;
    }
    @Override public Downloader getDownloaderForURN(    URN sha1){
      return null;
    }
    @Override public IncompleteFileManager getIncompleteFileManager(){
      return null;
    }
    @Override public float getLastMeasuredBandwidth(){
      return 0;
    }
    @Override public float getMeasuredBandwidth(){
      return 0;
    }
    @Override public int getNumActiveDownloads(){
      return 0;
    }
    @Override public int getNumIndividualDownloaders(){
      return 0;
    }
    @Override public int getNumWaitingDownloads(){
      return 0;
    }
    @Override public boolean hasInNetworkDownload(){
      return false;
    }
    @Override public boolean isActivelyDownloading(    URN urn){
      return false;
    }
    @Override public boolean isGuidForQueryDownloading(    GUID guid){
      return false;
    }
    @Override public boolean isIncomplete(    URN urn){
      return false;
    }
    @Override public boolean isSaveLocationTaken(    File candidateFile){
      return false;
    }
    @Override public boolean isSavedDownloadsLoaded(){
      return false;
    }
    @Override public void killDownloadersNotListed(    Collection<? extends DownloadInformation> updates){
    }
    @Override public void loadSavedDownloadsAndScheduleWriting(){
    }
    @Override public void measureBandwidth(){
    }
    @Override public void remove(    CoreDownloader downloader,    boolean completed){
    }
    @Override public void sendQuery(    QueryRequest query){
    }
    @Override public void start(){
    }
    @Override public void writeSnapshot(){
    }
    @Override public void visitDownloads(    Visitor<CoreDownloader> d){
    }
    @Override public void addListener(    EventListener<DownloadManagerEvent> listener){
    }
    @Override public boolean removeListener(    EventListener<DownloadManagerEvent> listener){
      return false;
    }
    @Override public void handleQueryReply(    QueryReply qr,    Address address){
    }
    @Override public boolean contains(    Downloader downloader){
      return false;
    }
  }
,new NoOpSaveLocationManager(),new DefaultHttpExecutor(new Provider<LimeHttpClient>(){
    @Override public LimeHttpClient get(){
      return new SimpleLimeHttpClient();
    }
  }
,new BasicHttpParams()),new ActivityCallback(){
    @Override public void addUpload(    Uploader u){
    }
    @Override public void handleMagnets(    MagnetOptions[] magnets){
    }
    @Override public void handleQuery(    QueryRequest query,    String address,    int port){
    }
    public void handleSharedFileUpdate(    File file){
    }
    @Override public void handleTorrent(    File torrentFile){
    }
    @Override public void installationCorrupted(){
    }
    @Override public boolean isQueryAlive(    GUID guid){
      return false;
    }
    @Override public void removeUpload(    Uploader u){
    }
    @Override public void restoreApplication(){
    }
    @Override public String translate(    String s){
      return null;
    }
    @Override public void uploadsComplete(){
    }
    @Override public void addDownload(    Downloader d){
    }
    @Override public void downloadsComplete(){
    }
    @Override public void promptAboutCorruptDownload(    Downloader dloader){
      dloader.discardCorruptDownload(false);
    }
    @Override public void warnUser(    String filename,    String message){
    }
    @Override public void removeDownload(    Downloader d){
    }
    @Override public void handleDownloadException(    DownloadAction downLoadAction,    DownloadException e,    boolean supportsNewSaveDir){
    }
    @Override public boolean promptTorrentUploadCancel(    Torrent torrent){
      return true;
    }
    @Override public void handleQueryResult(    RemoteFileDesc rfd,    QueryReply queryReply,    Set<? extends IpPort> locs){
    }
    @Override public boolean promptTorrentFilePriorities(    Torrent torrent){
      return true;
    }
  }
,new CategoryManager(){
    @Override public Category getCategoryForExtension(    String extension){
      return null;
    }
    @Override public Predicate<String> getFilterForCategory(    Category category){
      return null;
    }
    @Override public Predicate<String> getOsxAndLinuxProgramsFilter(){
      return null;
    }
    @Override public Predicate<String> getWindowsProgramsFilter(){
      return null;
    }
    @Override public Collection<String> getExtensionsForCategory(    Category category){
      return null;
    }
    @Override public Category getCategoryForFile(    File file){
      return null;
    }
  }
);
  torrentFileDownloaderImpl.initDownloadInformation(uri,true);
  return torrentFileDownloaderImpl;
}

Fixed version (ground truth):
private BTTorrentFileDownloader createDownloader(URI uri){
  BTTorrentFileDownloader torrentFileDownloaderImpl=new BTTorrentFileDownloaderImpl(new DownloadManager(){
    @Override public boolean acceptPushedSocket(    String file,    int index,    byte[] clientGUID,    Socket socket){
      return false;
    }
    @Override public void addNewDownloader(    CoreDownloader downloader){
    }
    @Override public void bumpPriority(    Downloader downl,    boolean up,    int amt){
    }
    @Override public boolean conflicts(    URN urn,    long fileSize,    File... fileName){
      return false;
    }
    @Override public Downloader download(    RemoteFileDesc[] files,    List<? extends RemoteFileDesc> alts,    GUID queryGUID,    boolean overwrite,    File saveDir,    String fileName) throws DownloadException {
      return null;
    }
    @Override public Downloader download(    MagnetOptions magnet,    boolean overwrite,    File saveDir,    String fileName) throws IllegalArgumentException, DownloadException {
      return null;
    }
    @Override public Downloader download(    File incompleteFile) throws CantResumeException, DownloadException {
      return null;
    }
    @Override public Downloader download(    DownloadInformation info,    long now) throws DownloadException {
      return null;
    }
    @Override public Downloader downloadFromMozilla(    MozillaDownload listener){
      return null;
    }
    @Override public Downloader downloadFromStore(    RemoteFileDesc rfd,    boolean overwrite,    File saveDir,    String fileName) throws IllegalArgumentException, DownloadException {
      return null;
    }
    @Override public Downloader downloadTorrent(    URI torrentURI,    boolean overwrite) throws DownloadException {
      return null;
    }
    @Override public Downloader downloadTorrent(    File torrentFile,    File saveDirectory,    boolean overwrite) throws DownloadException {
      return null;
    }
    @Override public int downloadsInProgress(){
      return 0;
    }
    @Override public Iterable<CoreDownloader> getAllDownloaders(){
      return null;
    }
    @Override public float getAverageBandwidth(){
      return 0;
    }
    @Override public Downloader getDownloaderForIncompleteFile(    File file){
      return null;
    }
    @Override public Downloader getDownloaderForURN(    URN sha1){
      return null;
    }
    @Override public IncompleteFileManager getIncompleteFileManager(){
      return null;
    }
    @Override public float getLastMeasuredBandwidth(){
      return 0;
    }
    @Override public float getMeasuredBandwidth(){
      return 0;
    }
    @Override public int getNumActiveDownloads(){
      return 0;
    }
    @Override public int getNumIndividualDownloaders(){
      return 0;
    }
    @Override public int getNumWaitingDownloads(){
      return 0;
    }
    @Override public boolean hasInNetworkDownload(){
      return false;
    }
    @Override public boolean isActivelyDownloading(    URN urn){
      return false;
    }
    @Override public boolean isGuidForQueryDownloading(    GUID guid){
      return false;
    }
    @Override public boolean isIncomplete(    URN urn){
      return false;
    }
    @Override public boolean isSaveLocationTaken(    File candidateFile){
      return false;
    }
    @Override public boolean isSavedDownloadsLoaded(){
      return false;
    }
    @Override public void killDownloadersNotListed(    Collection<? extends DownloadInformation> updates){
    }
    @Override public void loadSavedDownloadsAndScheduleWriting(){
    }
    @Override public void measureBandwidth(){
    }
    @Override public void remove(    CoreDownloader downloader,    boolean completed){
    }
    @Override public void sendQuery(    QueryRequest query){
    }
    @Override public void start(){
    }
    @Override public void writeSnapshot(){
    }
    @Override public void visitDownloads(    Visitor<CoreDownloader> d){
    }
    @Override public void addListener(    EventListener<DownloadManagerEvent> listener){
    }
    @Override public boolean removeListener(    EventListener<DownloadManagerEvent> listener){
      return false;
    }
    @Override public void handleQueryReply(    QueryReply qr,    Address address){
    }
    @Override public boolean contains(    Downloader downloader){
      return false;
    }
  }
,new NoOpSaveLocationManager(),new DefaultHttpExecutor(new Provider<LimeHttpClient>(){
    @Override public LimeHttpClient get(){
      return new SimpleLimeHttpClient();
    }
  }
,new BasicHttpParams()),new ActivityCallback(){
    @Override public void addUpload(    Uploader u){
    }
    @Override public void handleMagnets(    MagnetOptions[] magnets){
    }
    @Override public void handleQuery(    QueryRequest query,    String address,    int port){
    }
    public void handleSharedFileUpdate(    File file){
    }
    @Override public void handleTorrent(    File torrentFile){
    }
    @Override public void installationCorrupted(){
    }
    @Override public boolean isQueryAlive(    GUID guid){
      return false;
    }
    @Override public void removeUpload(    Uploader u){
    }
    @Override public void restoreApplication(){
    }
    @Override public String translate(    String s){
      return null;
    }
    @Override public void uploadsComplete(){
    }
    @Override public void addDownload(    Downloader d){
    }
    @Override public void downloadsComplete(){
    }
    @Override public void promptAboutCorruptDownload(    Downloader dloader){
      dloader.discardCorruptDownload(false);
    }
    @Override public void warnUser(    String filename,    String message){
    }
    @Override public void removeDownload(    Downloader d){
    }
    @Override public void handleDownloadException(    DownloadAction downLoadAction,    DownloadException e,    boolean supportsNewSaveDir){
    }
    @Override public boolean promptTorrentUploadCancel(    Torrent torrent){
      return true;
    }
    @Override public void handleQueryResult(    RemoteFileDesc rfd,    QueryReply queryReply,    Set<? extends IpPort> locs){
    }
    @Override public boolean promptTorrentFilePriorities(    Torrent torrent){
      return true;
    }
  }
,new CategoryManager(){
    @Override public Category getCategoryForExtension(    String extension){
      return null;
    }
    @Override public Predicate<String> getExtensionFilterForCategory(    Category category){
      return null;
    }
    @Override public Predicate<String> getOsxAndLinuxProgramsFilter(){
      return null;
    }
    @Override public Predicate<String> getWindowsProgramsFilter(){
      return null;
    }
    @Override public Collection<String> getExtensionsForCategory(    Category category){
      return null;
    }
    @Override public Category getCategoryForFile(    File file){
      return null;
    }
    @Override public Category getCategoryForFilename(    String filename){
      return null;
    }
  }
);
  torrentFileDownloaderImpl.initDownloadInformation(uri,true);
  return torrentFileDownloaderImpl;
}