Program: 10308
Project: 10308
Buggy source:
@EventHandler public void utilTag(ReplaceableTagEvent event){
  if (!event.matches("String_Node_Str"))   return;
  String type=event.getType() != null ? event.getType() : "String_Node_Str";
  String typeContext=event.getTypeContext() != null ? event.getTypeContext() : "String_Node_Str";
  String subType=event.getSubType() != null ? event.getSubType() : "String_Node_Str";
  String subTypeContext=event.getSubTypeContext() != null ? event.getSubTypeContext().toUpperCase() : "String_Node_Str";
  String specifier=event.getSpecifier() != null ? event.getSpecifier() : "String_Node_Str";
  String specifierContext=event.getSpecifierContext() != null ? event.getSpecifierContext().toUpperCase() : "String_Node_Str";
  Attribute attribute=new Attribute(event.raw_tag,event.getScriptEntry()).fulfill(1);
  if (type.equalsIgnoreCase("String_Node_Str")) {
    if (subType.equalsIgnoreCase("String_Node_Str")) {
      if (specifier.equalsIgnoreCase("String_Node_Str")) {
        if (aH.matchesInteger(subTypeContext) && aH.matchesInteger(specifierContext)) {
          int min=aH.getIntegerFrom(subTypeContext);
          int max=aH.getIntegerFrom(specifierContext);
          if (min > max) {
            int store=min;
            min=max;
            max=store;
          }
          event.setReplaced(new Element(String.valueOf(Utilities.getRandom().nextInt(max - min + 1) + min)).getAttribute(attribute.fulfill(3)));
        }
      }
    }
 else     if (subType.equalsIgnoreCase("String_Node_Str")) {
      dList list=dList.valueOf(subTypeContext);
      event.setReplaced(new Element(list.get(new Random().nextInt(list.size()))).getAttribute(attribute.fulfill(2)));
    }
 else     if (subType.equalsIgnoreCase("String_Node_Str"))     event.setReplaced(new Element(UUID.randomUUID().toString()).getAttribute(attribute.fulfill(2)));
 else     if (subType.equalsIgnoreCase("String_Node_Str"))     event.setReplaced(new Element(ScriptQueue._getNextId()).getAttribute(attribute.fulfill(2)));
  }
 else   if (type.equalsIgnoreCase("String_Node_Str") || type.equalsIgnoreCase("String_Node_Str") || type.equalsIgnoreCase("String_Node_Str")) {
    String text=event.getTypeContext();
    int from=1;
    int to=text.length() + 1;
    int tags=2;
    if (subType.equalsIgnoreCase("String_Node_Str")) {
      from=text.toUpperCase().indexOf(subTypeContext) + subTypeContext.length() + 1;
    }
    if (subType.equalsIgnoreCase("String_Node_Str")) {
      to=text.toUpperCase().indexOf(subTypeContext) + 1;
    }
    try {
      if (subType.equalsIgnoreCase("String_Node_Str"))       from=Integer.valueOf(subTypeContext);
    }
 catch (    NumberFormatException e) {
    }
    try {
      if (specifier.equalsIgnoreCase("String_Node_Str")) {
        to=Integer.valueOf(specifierContext);
        tags=3;
      }
    }
 catch (    NumberFormatException e) {
    }
    if (to > text.length())     to=text.length() + 1;
    event.setReplaced(new Element(text.substring(from - 1,to - 1)).getAttribute(attribute.fulfill(tags)));
  }
 else   if (type.equalsIgnoreCase("String_Node_Str")) {
    String item_to_replace=event.getTypeContext();
    String replace=event.getSubTypeContext();
    String replacement=event.getSpecifierContext();
    event.setReplaced(new Element(item_to_replace.replace(replace,replacement)).getAttribute(attribute.fulfill(3)));
  }
 else   if (type.equalsIgnoreCase("String_Node_Str")) {
    dEntity ent=dEntity.valueOf(event.getTypeContext());
    event.setReplaced(new Element((ent != null && ent.isUnique() && ent.isSpawned()) ? "String_Node_Str" : "String_Node_Str").getAttribute(attribute.fulfill(1)));
  }
 else   if (type.equalsIgnoreCase("String_Node_Str")) {
    String item_to_uppercase=event.getTypeContext();
    event.setReplaced(new Element(item_to_uppercase.toUpperCase()).getAttribute(attribute.fulfill(1)));
  }
 else   if (type.equalsIgnoreCase("String_Node_Str")) {
    String item_to_uppercase=event.getTypeContext();
    event.setReplaced(new Element(item_to_uppercase.toLowerCase()).getAttribute(attribute.fulfill(1)));
  }
 else   if (type.equalsIgnoreCase("String_Node_Str")) {
    Calendar calendar=Calendar.getInstance();
    Date currentDate=new Date();
    SimpleDateFormat format=new SimpleDateFormat();
    if (subType.equalsIgnoreCase("String_Node_Str")) {
      if (specifier.equalsIgnoreCase("String_Node_Str")) {
        format.applyPattern("String_Node_Str");
        event.setReplaced(new Element(format.format(currentDate)).getAttribute(attribute.fulfill(3)));
      }
 else       if (specifier.equalsIgnoreCase("String_Node_Str"))       event.setReplaced(new Element(calendar.get(Calendar.YEAR)).getAttribute(attribute.fulfill(3)));
 else       if (specifier.equalsIgnoreCase("String_Node_Str"))       event.setReplaced(new Element(calendar.get(Calendar.MONTH) + 1).getAttribute(attribute.fulfill(3)));
 else       if (specifier.equalsIgnoreCase("String_Node_Str"))       event.setReplaced(new Element(calendar.get(Calendar.DAY_OF_MONTH)).getAttribute(attribute.fulfill(3)));
 else       if (specifier.equalsIgnoreCase("String_Node_Str"))       event.setReplaced(new Element(calendar.get(Calendar.HOUR_OF_DAY)).getAttribute(attribute.fulfill(3)));
 else       if (specifier.equalsIgnoreCase("String_Node_Str"))       event.setReplaced(new Element(calendar.get(Calendar.MINUTE)).getAttribute(attribute.fulfill(3)));
 else       if (specifier.equalsIgnoreCase("String_Node_Str"))       event.setReplaced(new Element(calendar.get(Calendar.SECOND)).getAttribute(attribute.fulfill(3)));
 else {
        format.applyPattern("String_Node_Str");
        event.setReplaced(format.format(currentDate));
      }
    }
 else     if (subType.equalsIgnoreCase("String_Node_Str") && !subTypeContext.equalsIgnoreCase("String_Node_Str")) {
      try {
        format.applyPattern(event.getSubTypeContext());
        event.setReplaced(format.format(currentDate));
      }
 catch (      Exception ex) {
        dB.echoError("String_Node_Str" + event.getSubTypeContext() + "String_Node_Str");
        dB.echoError(ex);
      }
    }
 else {
      format.applyPattern("String_Node_Str");
      event.setReplaced(format.format(currentDate));
    }
  }
 else   if (type.equalsIgnoreCase("String_Node_Str")) {
    event.setReplaced(new Element(typeContext).getAttribute(attribute.fulfill(1)));
  }
}

Fixed version (ground truth):
@EventHandler public void utilTag(ReplaceableTagEvent event){
  if (!event.matches("String_Node_Str"))   return;
  String type=event.getType() != null ? event.getType() : "String_Node_Str";
  String typeContext=event.getTypeContext() != null ? event.getTypeContext() : "String_Node_Str";
  String subType=event.getSubType() != null ? event.getSubType() : "String_Node_Str";
  String subTypeContext=event.getSubTypeContext() != null ? event.getSubTypeContext().toUpperCase() : "String_Node_Str";
  String specifier=event.getSpecifier() != null ? event.getSpecifier() : "String_Node_Str";
  String specifierContext=event.getSpecifierContext() != null ? event.getSpecifierContext().toUpperCase() : "String_Node_Str";
  Attribute attribute=new Attribute(event.raw_tag,event.getScriptEntry()).fulfill(1);
  if (type.equalsIgnoreCase("String_Node_Str")) {
    if (subType.equalsIgnoreCase("String_Node_Str")) {
      if (specifier.equalsIgnoreCase("String_Node_Str")) {
        if (aH.matchesInteger(subTypeContext) && aH.matchesInteger(specifierContext)) {
          int min=aH.getIntegerFrom(subTypeContext);
          int max=aH.getIntegerFrom(specifierContext);
          if (min > max) {
            int store=min;
            min=max;
            max=store;
          }
          event.setReplaced(new Element(String.valueOf(Utilities.getRandom().nextInt(max - min + 1) + min)).getAttribute(attribute.fulfill(3)));
        }
      }
    }
 else     if (subType.equalsIgnoreCase("String_Node_Str")) {
      dList list=dList.valueOf(subTypeContext);
      event.setReplaced(new Element(list.get(new Random().nextInt(list.size()))).getAttribute(attribute.fulfill(2)));
    }
 else     if (subType.equalsIgnoreCase("String_Node_Str"))     event.setReplaced(new Element(UUID.randomUUID().toString()).getAttribute(attribute.fulfill(2)));
 else     if (subType.equalsIgnoreCase("String_Node_Str"))     event.setReplaced(new Element(ScriptQueue._getNextId()).getAttribute(attribute.fulfill(2)));
  }
 else   if (type.equalsIgnoreCase("String_Node_Str") || type.equalsIgnoreCase("String_Node_Str") || type.equalsIgnoreCase("String_Node_Str")) {
    String text=event.getTypeContext();
    int from=1;
    int to=text.length() + 1;
    int tags=2;
    if (subType.equalsIgnoreCase("String_Node_Str")) {
      from=text.toUpperCase().indexOf(subTypeContext) + subTypeContext.length() + 1;
    }
    if (subType.equalsIgnoreCase("String_Node_Str")) {
      to=text.toUpperCase().indexOf(subTypeContext) + 1;
    }
    try {
      if (subType.equalsIgnoreCase("String_Node_Str"))       from=Integer.valueOf(subTypeContext);
    }
 catch (    NumberFormatException e) {
    }
    try {
      if (specifier.equalsIgnoreCase("String_Node_Str")) {
        to=Integer.valueOf(specifierContext);
        tags=3;
      }
    }
 catch (    NumberFormatException e) {
    }
    if (to > text.length())     to=text.length() + 1;
    event.setReplaced(new Element(text.substring(from - 1,to - 1)).getAttribute(attribute.fulfill(tags)));
  }
 else   if (type.equalsIgnoreCase("String_Node_Str")) {
    String item_to_replace=event.getTypeContext();
    String replace=event.getSubTypeContext();
    String replacement=event.getSpecifierContext();
    event.setReplaced(new Element(item_to_replace.replace(replace,replacement)).getAttribute(attribute.fulfill(3)));
  }
 else   if (type.equalsIgnoreCase("String_Node_Str") && event.hasTypeContext()) {
    dEntity ent=dEntity.valueOf(event.getTypeContext());
    event.setReplaced(new Element((ent != null && ent.isUnique() && ent.isSpawned()) ? "String_Node_Str" : "String_Node_Str").getAttribute(attribute.fulfill(1)));
  }
 else   if (type.equalsIgnoreCase("String_Node_Str") && event.hasTypeContext()) {
    dNPC npc=dNPC.valueOf(event.getTypeContext());
    event.setReplaced(new Element((npc != null && npc.isValid())).getAttribute(attribute.fulfill(1)));
  }
 else   if (type.equalsIgnoreCase("String_Node_Str")) {
    String item_to_uppercase=event.getTypeContext();
    event.setReplaced(new Element(item_to_uppercase.toUpperCase()).getAttribute(attribute.fulfill(1)));
  }
 else   if (type.equalsIgnoreCase("String_Node_Str")) {
    String item_to_uppercase=event.getTypeContext();
    event.setReplaced(new Element(item_to_uppercase.toLowerCase()).getAttribute(attribute.fulfill(1)));
  }
 else   if (type.equalsIgnoreCase("String_Node_Str")) {
    Calendar calendar=Calendar.getInstance();
    Date currentDate=new Date();
    SimpleDateFormat format=new SimpleDateFormat();
    if (subType.equalsIgnoreCase("String_Node_Str")) {
      if (specifier.equalsIgnoreCase("String_Node_Str")) {
        format.applyPattern("String_Node_Str");
        event.setReplaced(new Element(format.format(currentDate)).getAttribute(attribute.fulfill(3)));
      }
 else       if (specifier.equalsIgnoreCase("String_Node_Str"))       event.setReplaced(new Element(calendar.get(Calendar.YEAR)).getAttribute(attribute.fulfill(3)));
 else       if (specifier.equalsIgnoreCase("String_Node_Str"))       event.setReplaced(new Element(calendar.get(Calendar.MONTH) + 1).getAttribute(attribute.fulfill(3)));
 else       if (specifier.equalsIgnoreCase("String_Node_Str"))       event.setReplaced(new Element(calendar.get(Calendar.DAY_OF_MONTH)).getAttribute(attribute.fulfill(3)));
 else       if (specifier.equalsIgnoreCase("String_Node_Str"))       event.setReplaced(new Element(calendar.get(Calendar.HOUR_OF_DAY)).getAttribute(attribute.fulfill(3)));
 else       if (specifier.equalsIgnoreCase("String_Node_Str"))       event.setReplaced(new Element(calendar.get(Calendar.MINUTE)).getAttribute(attribute.fulfill(3)));
 else       if (specifier.equalsIgnoreCase("String_Node_Str"))       event.setReplaced(new Element(calendar.get(Calendar.SECOND)).getAttribute(attribute.fulfill(3)));
 else {
        format.applyPattern("String_Node_Str");
        event.setReplaced(format.format(currentDate));
      }
    }
 else     if (subType.equalsIgnoreCase("String_Node_Str") && !subTypeContext.equalsIgnoreCase("String_Node_Str")) {
      try {
        format.applyPattern(event.getSubTypeContext());
        event.setReplaced(format.format(currentDate));
      }
 catch (      Exception ex) {
        dB.echoError("String_Node_Str" + event.getSubTypeContext() + "String_Node_Str");
        dB.echoError(ex);
      }
    }
 else {
      format.applyPattern("String_Node_Str");
      event.setReplaced(format.format(currentDate));
    }
  }
 else   if (type.equalsIgnoreCase("String_Node_Str")) {
    event.setReplaced(new Element(typeContext).getAttribute(attribute.fulfill(1)));
  }
}