Program: 26307
Project: 26307
Buggy source:
private static void generateObjectMethods(StringBuilder sb,DataValueModel<?> dvmodel,Map.Entry<String,FieldModel>[] entries,boolean offHeap){
  int count=0;
  StringBuilder hashCode=new StringBuilder();
  StringBuilder equals=new StringBuilder();
  StringBuilder equalsGetUsing=new StringBuilder();
  StringBuilder toStringGetUsing=new StringBuilder();
  StringBuilder getUsingEquals=new StringBuilder();
  StringBuilder toString=new StringBuilder();
  for (  Map.Entry<String,FieldModel> entry : entries) {
    String name=entry.getKey();
    FieldModel model=entry.getValue();
    Method getter=getGetter(model);
    Method getUsing=getUsing(model);
    if (getter == null)     getter=getVolatileGetter(model);
    if (getter != null || getUsing != null) {
      String getterName=(getter == null) ? getterName(getUsing) : getter.getName();
      methodLongHashCode(hashCode,getterName,model,count);
      if (getter != null)       methodEquals(equals,getterName,model,simpleName(dvmodel.type()));
 else {
        methodEqualsGetUsing(getUsingEquals,getUsing.getName());
        methodToStringGetUsing(toStringGetUsing,getUsing.getName(),name,model);
      }
      count++;
    }
    Bytes b;
    if (model.isArray()) {
      String nameWithUpper=Character.toUpperCase(name.charAt(0)) + name.substring(1);
      if (model.isVolatile())       nameWithUpper="String_Node_Str" + nameWithUpper;
      sb.append("String_Node_Str" + name + "String_Node_Str"+ "String_Node_Str"+ "String_Node_Str"+ model.indexSize().value()+ "String_Node_Str"+ "String_Node_Str"+ nameWithUpper+ "String_Node_Str"+ "String_Node_Str"+ "String_Node_Str"+ "String_Node_Str");
    }
  }
  sb.append("String_Node_Str" + "String_Node_Str" + "String_Node_Str"+ "String_Node_Str"+ "String_Node_Str"+ "String_Node_Str"+ "String_Node_Str");
  for (int i=1; i < count; i++)   sb.append('(');
  sb.append(hashCode);
  CharSequence simpleName=simpleName(dvmodel.type()).replace('$','.');
  sb.append("String_Node_Str").append("String_Node_Str").append("String_Node_Str");
  sb.append("String_Node_Str").append("String_Node_Str").append("String_Node_Str").append(simpleName).append("String_Node_Str").append("String_Node_Str").append(simpleName).append("String_Node_Str").append(simpleName).append("String_Node_Str").append("String_Node_Str").append(equals).append(equalsGetUsing).append("String_Node_Str").append("String_Node_Str").append("String_Node_Str");
  sb.append("String_Node_Str").append(offHeap ? "String_Node_Str" : "String_Node_Str").append("String_Node_Str").append("String_Node_Str").append(simpleName).append("String_Node_Str").append(toString).append(toStringGetUsing).append("String_Node_Str").append("String_Node_Str").append("String_Node_Str");
}

Fixed version (ground truth):
private static void generateObjectMethods(StringBuilder sb,DataValueModel<?> dvmodel,Map.Entry<String,FieldModel>[] entries,boolean offHeap){
  int count=0;
  StringBuilder hashCode=new StringBuilder();
  StringBuilder equals=new StringBuilder();
  StringBuilder equalsGetUsing=new StringBuilder();
  StringBuilder toStringGetUsing=new StringBuilder();
  StringBuilder getUsingEquals=new StringBuilder();
  StringBuilder toString=new StringBuilder();
  for (  Map.Entry<String,FieldModel> entry : entries) {
    String name=entry.getKey();
    FieldModel model=entry.getValue();
    Method getter=getGetter(model);
    Method getUsing=getUsing(model);
    if (getter == null)     getter=getVolatileGetter(model);
    if (getter != null || getUsing != null) {
      String getterName=(getter == null) ? getterName(getUsing) : getter.getName();
      methodLongHashCode(hashCode,getterName,model,count);
      if (getter != null) {
        methodEquals(equals,getterName,model,simpleName(dvmodel.type()));
        methodToString(toString,getterName,name,model);
      }
 else {
        methodEqualsGetUsing(getUsingEquals,getUsing.getName());
        methodToStringGetUsing(toStringGetUsing,getUsing.getName(),name,model);
      }
      count++;
    }
    Bytes b;
    if (model.isArray()) {
      String nameWithUpper=Character.toUpperCase(name.charAt(0)) + name.substring(1);
      if (model.isVolatile())       nameWithUpper="String_Node_Str" + nameWithUpper;
      sb.append("String_Node_Str" + name + "String_Node_Str"+ "String_Node_Str"+ "String_Node_Str"+ model.indexSize().value()+ "String_Node_Str"+ "String_Node_Str"+ nameWithUpper+ "String_Node_Str"+ "String_Node_Str"+ "String_Node_Str"+ "String_Node_Str");
    }
  }
  sb.append("String_Node_Str" + "String_Node_Str" + "String_Node_Str"+ "String_Node_Str"+ "String_Node_Str"+ "String_Node_Str"+ "String_Node_Str");
  for (int i=1; i < count; i++)   sb.append('(');
  sb.append(hashCode);
  CharSequence simpleName=simpleName(dvmodel.type()).replace('$','.');
  sb.append("String_Node_Str").append("String_Node_Str").append("String_Node_Str");
  sb.append("String_Node_Str").append("String_Node_Str").append("String_Node_Str").append(simpleName).append("String_Node_Str").append("String_Node_Str").append(simpleName).append("String_Node_Str").append(simpleName).append("String_Node_Str").append("String_Node_Str").append(equals).append(equalsGetUsing).append("String_Node_Str").append("String_Node_Str").append("String_Node_Str");
  sb.append("String_Node_Str").append(offHeap ? "String_Node_Str" : "String_Node_Str").append("String_Node_Str").append("String_Node_Str").append(simpleName).append("String_Node_Str").append(toString).append(toStringGetUsing).append("String_Node_Str").append("String_Node_Str").append("String_Node_Str");
}