Program: 20995
Project: 20995
Buggy source:
public ArrayList<DownloadLink> decryptIt(CryptedLink param,ProgressController progress) throws Exception {
  int submitvalue=getPluginConfig().getIntegerProperty("String_Node_Str",5);
  br.setDebug(true);
  String parameter=param.toString().replaceFirst("String_Node_Str","String_Node_Str");
  ArrayList<String> link_passwds=new ArrayList<String>();
  link_passwds.add("String_Node_Str");
  ArrayList<DownloadLink> decryptedLinks=new ArrayList<DownloadLink>();
  br.setFollowRedirects(false);
  this.setBrowserExclusive();
  progress.setRange(3);
  br.getPage(parameter);
  try {
    Thread.sleep(500);
  }
 catch (  Exception e) {
  }
  br.getPage(parameter);
  progress.increase(1);
  int max=10;
  while (br.containsHTML("String_Node_Str") || br.containsHTML("String_Node_Str")) {
    if (max-- <= 0) {
      logger.severe("String_Node_Str");
      return null;
    }
    String adr="String_Node_Str";
    progress.addToMax(1);
    String capTxt=getCaptchaCode("String_Node_Str",adr,param);
    Form post=br.getForm(0);
    post.put("String_Node_Str",capTxt);
    try {
      Thread.sleep(500);
    }
 catch (    Exception e) {
    }
    br.submitForm(post);
  }
  String[] ids=br.getRegex("String_Node_Str").getColumn(0);
  logger.finer("String_Node_Str" + ids.length);
  progress.addToMax(ids.length);
  Browser brc=br.cloneBrowser();
  for (  String element : ids) {
    for (int retry=1; retry < 5; retry++) {
      brc.getPage("String_Node_Str" + element);
      if (brc.containsHTML("String_Node_Str")) {
        String adr="String_Node_Str";
        String capTxt=getCaptchaCode("String_Node_Str",adr,param);
        Form post=brc.getForm(0);
        post.put("String_Node_Str",capTxt);
        brc.submitForm(post);
      }
 else {
        Form form=brc.getForm(0);
        if (form != null) {
          form.put("String_Node_Str",submitvalue + "String_Node_Str");
          brc.submitForm(form);
          if (brc.getRedirectLocation() == null) {
            logger.info("String_Node_Str");
            boolean found=false;
            for (int i=0; i <= 100; i++) {
              try {
                Thread.sleep(100);
              }
 catch (              Exception e) {
              }
              form.put("String_Node_Str",i + "String_Node_Str");
              brc.submitForm(form);
              if (brc.getRedirectLocation() != null) {
                found=true;
                getPluginConfig().setProperty("String_Node_Str",i);
                submitvalue=i;
                logger.info("String_Node_Str");
                break;
              }
            }
            if (found == false) {
              logger.info("String_Node_Str");
              getPluginConfig().setProperty("String_Node_Str",-1);
              return null;
            }
          }
        }
      }
      if (brc.getRedirectLocation() != null) {
        DownloadLink link=createDownloadlink(brc.getRedirectLocation());
        link.setSourcePluginPasswordList(link_passwds);
        decryptedLinks.add(link);
        break;
      }
    }
    progress.increase(1);
  }
  progress.increase(1);
  return decryptedLinks;
}

Fixed version (ground truth):
public ArrayList<DownloadLink> decryptIt(CryptedLink param,ProgressController progress) throws Exception {
  int submitvalue=getPluginConfig().getIntegerProperty("String_Node_Str",5);
  br.setDebug(true);
  String parameter=param.toString().replaceFirst("String_Node_Str","String_Node_Str");
  ArrayList<String> link_passwds=new ArrayList<String>();
  link_passwds.add("String_Node_Str");
  ArrayList<DownloadLink> decryptedLinks=new ArrayList<DownloadLink>();
  br.setFollowRedirects(false);
  this.setBrowserExclusive();
  progress.setRange(3);
  if (parameter.contains("String_Node_Str")) {
    String linkid=new Regex(parameter,"String_Node_Str").getMatch(0);
    parameter="String_Node_Str" + linkid;
  }
  br.getPage(parameter);
  try {
    Thread.sleep(500);
  }
 catch (  Exception e) {
  }
  br.getPage(parameter);
  progress.increase(1);
  int max=10;
  while (br.containsHTML("String_Node_Str") || br.containsHTML("String_Node_Str")) {
    if (max-- <= 0) {
      logger.severe("String_Node_Str");
      return null;
    }
    String adr="String_Node_Str";
    progress.addToMax(1);
    String capTxt=getCaptchaCode("String_Node_Str",adr,param);
    Form post=br.getForm(0);
    post.put("String_Node_Str",capTxt);
    try {
      Thread.sleep(500);
    }
 catch (    Exception e) {
    }
    br.submitForm(post);
  }
  String[] ids=br.getRegex("String_Node_Str").getColumn(0);
  logger.finer("String_Node_Str" + ids.length);
  progress.addToMax(ids.length);
  Browser brc=br.cloneBrowser();
  for (  String element : ids) {
    for (int retry=1; retry < 5; retry++) {
      brc.getPage("String_Node_Str" + element);
      if (brc.containsHTML("String_Node_Str")) {
        String adr="String_Node_Str";
        String capTxt=getCaptchaCode("String_Node_Str",adr,param);
        Form post=brc.getForm(0);
        post.put("String_Node_Str",capTxt);
        brc.submitForm(post);
      }
 else {
        Form form=brc.getForm(0);
        if (form != null) {
          form.put("String_Node_Str",submitvalue + "String_Node_Str");
          brc.submitForm(form);
          if (brc.getRedirectLocation() == null) {
            logger.info("String_Node_Str");
            boolean found=false;
            for (int i=0; i <= 100; i++) {
              try {
                Thread.sleep(100);
              }
 catch (              Exception e) {
              }
              form.put("String_Node_Str",i + "String_Node_Str");
              brc.submitForm(form);
              if (brc.getRedirectLocation() != null) {
                found=true;
                getPluginConfig().setProperty("String_Node_Str",i);
                submitvalue=i;
                logger.info("String_Node_Str");
                break;
              }
            }
            if (found == false) {
              logger.info("String_Node_Str");
              getPluginConfig().setProperty("String_Node_Str",-1);
              return null;
            }
          }
        }
      }
      if (brc.getRedirectLocation() != null) {
        DownloadLink link=createDownloadlink(brc.getRedirectLocation());
        link.setSourcePluginPasswordList(link_passwds);
        decryptedLinks.add(link);
        break;
      }
    }
    progress.increase(1);
  }
  progress.increase(1);
  return decryptedLinks;
}