Program: 11561
Project: 11561
Buggy source:
@Override public void initialize() throws OperatorException {
  if (width == 0) {
    width=sourceProduct.getSceneRasterWidth() - regionX;
  }
  if (height == 0) {
    height=sourceProduct.getSceneRasterHeight() - regionY;
  }
  if (regionX + width > sourceProduct.getSceneRasterWidth()) {
    throw new OperatorException("String_Node_Str" + sourceProduct.getSceneRasterWidth() + "String_Node_Str"+ sourceProduct.getSceneRasterHeight());
  }
  if (regionY + height > sourceProduct.getSceneRasterHeight()) {
    throw new OperatorException("String_Node_Str" + sourceProduct.getSceneRasterWidth() + "String_Node_Str"+ sourceProduct.getSceneRasterHeight());
  }
  subsetReader=new ProductSubsetBuilder();
  final ProductSubsetDef subsetDef=new ProductSubsetDef();
  subsetDef.addNodeNames(sourceProduct.getTiePointGridNames());
  if (sourceBandNames != null && sourceBandNames.length > 0) {
    subsetDef.addNodeNames(sourceBandNames);
  }
 else {
    subsetDef.addNodeNames(sourceProduct.getBandNames());
  }
  subsetDef.setRegion(regionX,regionY,width,height);
  if (geoRegion != null) {
    final Rectangle region=computePixelRegion(sourceProduct,geoRegion,0);
    if (region != null) {
      if (region.isEmpty()) {
        throw new OperatorException("String_Node_Str" + sourceProduct.getName());
      }
      subsetDef.setRegion(region);
    }
  }
  subsetDef.setSubSampling(subSamplingX,subSamplingY);
  subsetDef.setIgnoreMetadata(false);
  try {
    targetProduct=subsetReader.readProductNodes(sourceProduct,subsetDef);
    for (    Band b : targetProduct.getBands()) {
      if (b instanceof VirtualBand) {
        targetProduct.removeBand(b);
        final Band newBand=targetProduct.addBand(b.getName(),b.getDataType());
        newBand.setNoDataValue(b.getNoDataValue());
        newBand.setNoDataValueUsed(b.isNoDataValueUsed());
        newBand.setDescription(b.getDescription());
        newBand.setUnit(b.getUnit());
        bandMap.put(newBand,b);
      }
    }
  }
 catch (  Throwable t) {
    throw new OperatorException(t);
  }
}

Fixed version (ground truth):
@Override public void initialize() throws OperatorException {
  if (width == 0 || regionX + width > sourceProduct.getSceneRasterWidth()) {
    width=sourceProduct.getSceneRasterWidth() - regionX;
  }
  if (height == 0 || regionY + height > sourceProduct.getSceneRasterHeight()) {
    height=sourceProduct.getSceneRasterHeight() - regionY;
  }
  subsetReader=new ProductSubsetBuilder();
  final ProductSubsetDef subsetDef=new ProductSubsetDef();
  subsetDef.addNodeNames(sourceProduct.getTiePointGridNames());
  if (sourceBandNames != null && sourceBandNames.length > 0) {
    subsetDef.addNodeNames(sourceBandNames);
  }
 else {
    subsetDef.addNodeNames(sourceProduct.getBandNames());
  }
  subsetDef.setRegion(regionX,regionY,width,height);
  if (geoRegion != null) {
    final Rectangle region=computePixelRegion(sourceProduct,geoRegion,0);
    if (region != null) {
      if (region.isEmpty()) {
        throw new OperatorException("String_Node_Str" + sourceProduct.getName());
      }
      subsetDef.setRegion(region);
    }
  }
  subsetDef.setSubSampling(subSamplingX,subSamplingY);
  subsetDef.setIgnoreMetadata(false);
  try {
    targetProduct=subsetReader.readProductNodes(sourceProduct,subsetDef);
    for (    Band b : targetProduct.getBands()) {
      if (b instanceof VirtualBand) {
        targetProduct.removeBand(b);
        final Band newBand=targetProduct.addBand(b.getName(),b.getDataType());
        newBand.setNoDataValue(b.getNoDataValue());
        newBand.setNoDataValueUsed(b.isNoDataValueUsed());
        newBand.setDescription(b.getDescription());
        newBand.setUnit(b.getUnit());
        bandMap.put(newBand,b);
      }
    }
  }
 catch (  Throwable t) {
    throw new OperatorException(t);
  }
}