Program: 25523
Project: 25523
Buggy source:
@Override public ChannelMap getChannels(final int mipmapLevel) throws IllegalArgumentException {
  final ChannelMap channels=new ChannelMap();
  if ((channelSpecList != null) && (channelSpecList.size() > 0)) {
    final long loadMipStart=System.currentTimeMillis();
    final ChannelSpec firstChannelSpec=channelSpecList.get(0);
    int downSampleLevels=0;
    final Map.Entry<Integer,ImageAndMask> mipmapEntry=firstChannelSpec.getFloorMipmapEntry(mipmapLevel);
    final ImageAndMask imageAndMask=mipmapEntry.getValue();
    final int currentMipmapLevel=mipmapEntry.getKey();
    if (currentMipmapLevel < mipmapLevel) {
      downSampleLevels=mipmapLevel - currentMipmapLevel;
    }
    final ImageProcessor imageProcessor=imageProcessorCache.get(imageAndMask.getImageUrl(),downSampleLevels,false,firstChannelSpec.is16Bit());
    final long loadMipStop=System.currentTimeMillis();
    if (imageProcessor.getWidth() == 0 || imageProcessor.getHeight() == 0) {
      LOG.debug("String_Node_Str" + getSourceName() + "String_Node_Str"+ imageAndMask.getImageUrl()+ "String_Node_Str"+ downSampleLevels+ "String_Node_Str");
    }
 else {
      final ImageProcessor maskProcessor;
      final String maskUrl=imageAndMask.getMaskUrl();
      if ((maskUrl != null) && (!excludeMask)) {
        maskProcessor=imageProcessorCache.get(maskUrl,downSampleLevels,true,false);
      }
 else {
        maskProcessor=null;
      }
      final long loadMaskStop=System.currentTimeMillis();
      setMinAndMaxIntensity(imageProcessor,firstChannelSpec);
      final ImageProcessorWithMasks firstChannel=new ImageProcessorWithMasks(imageProcessor,maskProcessor,null);
      if ((maskProcessor != null) && (firstChannel.mask == null)) {
        LOG.warn("String_Node_Str",sourceName,imageAndMask.getImageUrl(),imageProcessor.getWidth(),imageProcessor.getHeight(),imageAndMask.getMaskUrl(),maskProcessor.getWidth(),maskProcessor.getHeight());
      }
      channels.put(firstChannelSpec.getName(),firstChannel);
      if (channelSpecList.size() > 1) {
        final boolean firstChannelHasMask=(firstChannel.mask != null);
        loadAdditionalChannels(imageProcessor.getWidth(),imageProcessor.getHeight(),firstChannelHasMask,mipmapLevel,channels);
      }
      final long loadAdditionalChannelsStop=System.currentTimeMillis();
      LOG.debug("String_Node_Str",sourceName,loadAdditionalChannelsStop - loadMipStart,mipmapLevel,loadMipStop - loadMipStart,downSampleLevels,loadMaskStop - loadMipStop,loadAdditionalChannelsStop - loadMaskStop,imageProcessorCache.size());
    }
  }
  return channels;
}

Fixed version (ground truth):
@Override public ChannelMap getChannels(final int mipmapLevel) throws IllegalArgumentException {
  final ChannelMap channels=new ChannelMap();
  if ((channelSpecList != null) && (channelSpecList.size() > 0)) {
    final long loadMipStart=System.currentTimeMillis();
    final ChannelSpec firstChannelSpec=channelSpecList.get(0);
    int downSampleLevels=0;
    final Map.Entry<Integer,ImageAndMask> mipmapEntry=firstChannelSpec.getFloorMipmapEntry(mipmapLevel);
    final ImageAndMask imageAndMask=mipmapEntry.getValue();
    final int currentMipmapLevel=mipmapEntry.getKey();
    if (currentMipmapLevel < mipmapLevel) {
      downSampleLevels=mipmapLevel - currentMipmapLevel;
    }
    final ImageProcessor imageProcessor=imageProcessorCache.get(imageAndMask.getImageUrl(),downSampleLevels,false,firstChannelSpec.is16Bit());
    final long loadMipStop=System.currentTimeMillis();
    if (imageProcessor.getWidth() == 0 || imageProcessor.getHeight() == 0) {
      LOG.debug("String_Node_Str" + getSourceName() + "String_Node_Str"+ imageAndMask.getImageUrl()+ "String_Node_Str"+ downSampleLevels+ "String_Node_Str");
    }
 else {
      final ImageProcessor maskProcessor;
      final String maskUrl=imageAndMask.getMaskUrl();
      if ((maskUrl != null) && (!excludeMask)) {
        maskProcessor=imageProcessorCache.get(maskUrl,downSampleLevels,true,false);
      }
 else {
        maskProcessor=null;
      }
      final long loadMaskStop=System.currentTimeMillis();
      setMinAndMaxIntensity(imageProcessor,firstChannelSpec);
      final ImageProcessorWithMasks firstChannel=new ImageProcessorWithMasks(imageProcessor,maskProcessor,null);
      if ((maskProcessor != null) && (firstChannel.mask == null)) {
        LOG.warn("String_Node_Str",sourceName,imageAndMask.getImageUrl(),imageProcessor.getWidth(),imageProcessor.getHeight(),imageAndMask.getMaskUrl(),maskProcessor.getWidth(),maskProcessor.getHeight());
      }
      channels.put(firstChannelSpec.getName(),firstChannel);
      if (channelSpecList.size() > 1) {
        loadAdditionalChannels(imageProcessor.getWidth(),imageProcessor.getHeight(),mipmapLevel,channels);
      }
      final long loadAdditionalChannelsStop=System.currentTimeMillis();
      LOG.debug("String_Node_Str",sourceName,loadAdditionalChannelsStop - loadMipStart,mipmapLevel,loadMipStop - loadMipStart,downSampleLevels,loadMaskStop - loadMipStop,loadAdditionalChannelsStop - loadMaskStop,imageProcessorCache.size());
    }
  }
  return channels;
}