Program: 158313
Project: 158313
Buggy source:
@Override public BufferedImage apply(String key){
  try {
    boolean usesVariousArt=false;
    if (key.matches("String_Node_Str")) {
      usesVariousArt=true;
      key=key.replace("String_Node_Str","String_Node_Str");
    }
    boolean thumbnail=false;
    if (key.matches("String_Node_Str")) {
      thumbnail=true;
      key=key.replace("String_Node_Str","String_Node_Str");
    }
    Matcher m=KEY_PATTERN.matcher(key);
    if (m.matches()) {
      String name=m.group(1);
      String set=m.group(2);
      Integer type=Integer.parseInt(m.group(3));
      String collectorId=m.group(4);
      if (collectorId.equals("String_Node_Str")) {
        collectorId="String_Node_Str";
      }
      String tokenSetCode=m.group(5);
      String tokenDescriptor=m.group(6);
      CardDownloadData info=new CardDownloadData(name,set,collectorId,usesVariousArt,type,tokenSetCode,tokenDescriptor);
      String path;
      if (collectorId.isEmpty() || "String_Node_Str".equals(collectorId)) {
        info.setToken(true);
        path=CardImageUtils.generateTokenImagePath(info);
        if (path == null) {
          path=DirectLinksForDownload.outDir + File.separator + DirectLinksForDownload.cardbackFilename;
        }
      }
 else {
        path=CardImageUtils.generateImagePath(info);
      }
      if (path == null) {
        return null;
      }
      TFile file=getTFile(path);
      if (file == null) {
        return null;
      }
      if (thumbnail && path.endsWith("String_Node_Str")) {
        String thumbnailPath=buildThumbnailPath(path);
        TFile thumbnailFile=null;
        try {
          thumbnailFile=new TFile(thumbnailPath);
        }
 catch (        Exception ex) {
        }
        boolean exists=false;
        if (thumbnailFile != null) {
          try {
            exists=thumbnailFile.exists();
          }
 catch (          Exception ex) {
            exists=false;
          }
        }
        if (exists) {
          LOGGER.debug("String_Node_Str" + key + "String_Node_Str"+ thumbnailPath);
          BufferedImage thumbnailImage=loadImage(thumbnailFile);
          if (thumbnailImage == null) {
            LOGGER.warn("String_Node_Str" + key + "String_Node_Str"+ thumbnailPath+ "String_Node_Str");
            thumbnailImage=makeThumbnailByFile(key,file,thumbnailPath);
          }
          return thumbnailImage;
        }
 else {
          return makeThumbnailByFile(key,file,thumbnailPath);
        }
      }
 else {
        return getWizardsCard(loadImage(file));
      }
    }
 else {
      throw new RuntimeException("String_Node_Str" + key);
    }
  }
 catch (  Exception ex) {
    if (ex instanceof ComputationException) {
      throw (ComputationException)ex;
    }
 else {
      throw new ComputationException(ex);
    }
  }
}

Fixed version (ground truth):
@Override public BufferedImage apply(String key){
  try {
    boolean usesVariousArt=false;
    LOGGER.info("String_Node_Str" + key);
    if (key.matches("String_Node_Str")) {
      usesVariousArt=true;
      key=key.replace("String_Node_Str","String_Node_Str");
    }
    boolean thumbnail=false;
    if (key.matches("String_Node_Str")) {
      thumbnail=true;
      key=key.replace("String_Node_Str","String_Node_Str");
    }
    Matcher m=KEY_PATTERN.matcher(key);
    if (m.matches()) {
      String name=m.group(1);
      String set=m.group(2);
      Integer type=Integer.parseInt(m.group(3));
      String collectorId=m.group(4);
      if (collectorId.equals("String_Node_Str")) {
        collectorId="String_Node_Str";
      }
      String tokenSetCode=m.group(5);
      String tokenDescriptor=m.group(6);
      CardDownloadData info=new CardDownloadData(name,set,collectorId,usesVariousArt,type,tokenSetCode,tokenDescriptor);
      String path;
      if (collectorId.isEmpty() || "String_Node_Str".equals(collectorId)) {
        info.setToken(true);
        path=CardImageUtils.generateTokenImagePath(info);
        if (path == null) {
          path=DirectLinksForDownload.outDir + File.separator + DirectLinksForDownload.cardbackFilename;
        }
      }
 else {
        path=CardImageUtils.generateImagePath(info);
      }
      if (path == null) {
        return null;
      }
      TFile file=getTFile(path);
      if (file == null) {
        return null;
      }
      if (thumbnail && path.endsWith("String_Node_Str")) {
        String thumbnailPath=buildThumbnailPath(path);
        TFile thumbnailFile=null;
        try {
          thumbnailFile=new TFile(thumbnailPath);
        }
 catch (        Exception ex) {
        }
        boolean exists=false;
        if (thumbnailFile != null) {
          try {
            exists=thumbnailFile.exists();
          }
 catch (          Exception ex) {
            exists=false;
          }
        }
        if (exists) {
          LOGGER.debug("String_Node_Str" + key + "String_Node_Str"+ thumbnailPath);
          BufferedImage thumbnailImage=loadImage(thumbnailFile);
          if (thumbnailImage == null) {
            LOGGER.warn("String_Node_Str" + key + "String_Node_Str"+ thumbnailPath+ "String_Node_Str");
            thumbnailImage=makeThumbnailByFile(key,file,thumbnailPath);
          }
          return thumbnailImage;
        }
 else {
          return makeThumbnailByFile(key,file,thumbnailPath);
        }
      }
 else {
        BufferedImage image=loadImage(file);
        LOGGER.info("String_Node_Str" + Integer.toHexString(image.hashCode()));
        image=getWizardsCard(image);
        LOGGER.info("String_Node_Str" + Integer.toHexString(image.hashCode()));
        return image;
      }
    }
 else {
      throw new RuntimeException("String_Node_Str" + key);
    }
  }
 catch (  Exception ex) {
    if (ex instanceof ComputationException) {
      throw (ComputationException)ex;
    }
 else {
      throw new ComputationException(ex);
    }
  }
}