Program: 10323
Project: 10323
Buggy source:
@Override public String getAttribute(Attribute attribute){
  if (attribute.startsWith("String_Node_Str"))   return new Element(material.hasGravity()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(material.getId()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(material.isBlock()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(material.isBurnable()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(material.isEdible()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(material.isFlammable()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(material.isOccluding()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(material.isRecord()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(material.isSolid()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(material.isTransparent()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(material.getMaxDurability()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(material.getMaxStackSize()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str")) {
    dMaterial compared=dMaterial.valueOf(attribute.getContext(1));
    if (compared == null)     return Element.FALSE.getAttribute(attribute.fulfill(1));
 else     return new Element(material.name().equalsIgnoreCase(compared.getMaterial().name())).getAttribute(attribute.fulfill(1));
  }
  if (attribute.startsWith("String_Node_Str"))   return new Element(material.name()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(getData()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new dItem(this,1).getAttribute(attribute.fulfill(1));
  for (  Property property : PropertyParser.getProperties(this)) {
    String returned=property.getAttribute(attribute);
    if (returned != null)     return returned;
  }
  return new Element(identify()).getAttribute(attribute.fulfill(0));
}

Fixed version (ground truth):
@Override public String getAttribute(Attribute attribute){
  if (attribute.startsWith("String_Node_Str"))   return new Element(material.hasGravity()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(material.getId()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(material.isBlock()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(material.isBurnable()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(material.isEdible()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(material.isFlammable()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(material.isOccluding()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(material.isRecord()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(material.isSolid()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(material.isTransparent()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(material.getMaxDurability()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(material.getMaxStackSize()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str")) {
    dMaterial compared=dMaterial.valueOf(attribute.getContext(1));
    if (compared == null)     return Element.FALSE.getAttribute(attribute.fulfill(1));
 else     return new Element(material.name().equalsIgnoreCase(compared.forcedIdentity != null ? compared.forcedIdentity : compared.getMaterial().name())).getAttribute(attribute.fulfill(1));
  }
  if (attribute.startsWith("String_Node_Str"))   return new Element(material.name()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new Element(getData()).getAttribute(attribute.fulfill(1));
  if (attribute.startsWith("String_Node_Str"))   return new dItem(this,1).getAttribute(attribute.fulfill(1));
  for (  Property property : PropertyParser.getProperties(this)) {
    String returned=property.getAttribute(attribute);
    if (returned != null)     return returned;
  }
  return new Element(identify()).getAttribute(attribute.fulfill(0));
}