Program: 184157
Project: 184157
Buggy source:
private boolean isConsumable(int x,int y,List<Point> toBeConsumed){
  log.entering(className,"String_Node_Str",new Object[]{new Point(x,y),toBeConsumed});
  temp.x=x;
  temp.y=y;
  if (toBeConsumed == null)   toBeConsumed=tempList;
  if (false == contains(temp)) {
    log.finest("String_Node_Str");
    log.exiting(className,"String_Node_Str",false);
    return false;
  }
  if (toBeConsumed.contains(temp)) {
    log.finest("String_Node_Str");
    log.exiting(className,"String_Node_Str",false);
    return false;
  }
  int available=0;
  boolean northAvail=false;
  if (contains(x,y + 1))   if (false == toBeConsumed.contains(new Point(x,y + 1))) {
    northAvail=true;
    ++available;
  }
  boolean eastAvail=false;
  if (contains(x + 1,y))   if (false == toBeConsumed.contains(new Point(x + 1,y))) {
    eastAvail=true;
    ++available;
  }
  boolean southAvail=false;
  if (contains(x,y - 1))   if (false == toBeConsumed.contains(new Point(x,y - 1))) {
    southAvail=true;
    ++available;
  }
  boolean westAvail=false;
  if (contains(x - 1,y))   if (false == toBeConsumed.contains(new Point(x - 1,y))) {
    westAvail=true;
    ++available;
  }
  if (available == 4 && toBeConsumed.size() != 0)   throw new IllegalStateException("String_Node_Str");
 else   if (available == 4 && toBeConsumed.size() == 0) {
    log.exiting(className,"String_Node_Str",true);
    return true;
  }
  if (available == 3) {
    if (!northAvail) {
      if (false == contains(x - 1,y - 1) || toBeConsumed.contains(new Point(x - 1,y - 1))) {
        log.exiting(className,"String_Node_Str",false);
        return false;
      }
      if (false == contains(x + 1,y - 1) || toBeConsumed.contains(new Point(x + 1,y - 1))) {
        log.exiting(className,"String_Node_Str",false);
        return false;
      }
      log.exiting(className,"String_Node_Str",true);
      return true;
    }
 else     if (!eastAvail) {
      if (false == contains(x - 1,y + 1) || toBeConsumed.contains(new Point(x - 1,y + 1))) {
        log.exiting(className,"String_Node_Str",false);
        return false;
      }
      if (false == contains(x - 1,y - 1) || toBeConsumed.contains(new Point(x - 1,y - 1))) {
        log.exiting(className,"String_Node_Str",false);
        return false;
      }
      log.exiting(className,"String_Node_Str",true);
      return true;
    }
 else     if (!southAvail) {
      if (false == contains(x - 1,y + 1) || toBeConsumed.contains(new Point(x - 1,y + 1))) {
        log.exiting(className,"String_Node_Str",false);
        return false;
      }
      if (false == contains(x + 1,y + 1) || toBeConsumed.contains(new Point(x + 1,y + 1))) {
        log.exiting(className,"String_Node_Str",false);
        return false;
      }
      log.exiting(className,"String_Node_Str",true);
      return true;
    }
 else     if (!westAvail) {
      if (false == contains(x + 1,y + 1) || toBeConsumed.contains(new Point(x + 1,y + 1))) {
        log.exiting(className,"String_Node_Str",false);
        return false;
      }
      if (false == contains(x + 1,y - 1) || toBeConsumed.contains(new Point(x + 1,y - 1))) {
        log.exiting(className,"String_Node_Str",false);
        return false;
      }
      log.exiting(className,"String_Node_Str",true);
      return true;
    }
 else     throw new IllegalStateException("String_Node_Str");
  }
  if (available == 2) {
    if (northAvail && southAvail) {
      log.exiting(className,"String_Node_Str",false);
      return false;
    }
    if (!northAvail && !southAvail) {
      log.exiting(className,"String_Node_Str",false);
      return false;
    }
    log.exiting(className,"String_Node_Str",true);
    return true;
  }
  if (available == 1) {
    log.exiting(className,"String_Node_Str",true);
    return true;
  }
  if (available == 0)   return true;
  if (available == 0 && toBeConsumed.size() != getArea())   throw new IllegalStateException("String_Node_Str" + toBeConsumed.size() + "String_Node_Str"+ getArea());
  throw new IllegalAccessError("String_Node_Str");
}

Fixed version (ground truth):
private boolean isConsumable(int x,int y,List<Point> toBeConsumed){
  log.entering(className,"String_Node_Str",new Object[]{new Point(x,y),toBeConsumed});
  temp.x=x;
  temp.y=y;
  if (toBeConsumed == null)   toBeConsumed=tempList;
  if (false == contains(temp)) {
    log.finest("String_Node_Str");
    log.exiting(className,"String_Node_Str",false);
    return false;
  }
  if (toBeConsumed.contains(temp)) {
    log.finest("String_Node_Str");
    log.exiting(className,"String_Node_Str",false);
    return false;
  }
  int available=0;
  boolean northAvail=false;
  if (contains(x,y + 1))   if (false == toBeConsumed.contains(new Point(x,y + 1))) {
    northAvail=true;
    ++available;
  }
  boolean eastAvail=false;
  if (contains(x + 1,y))   if (false == toBeConsumed.contains(new Point(x + 1,y))) {
    eastAvail=true;
    ++available;
  }
  boolean southAvail=false;
  if (contains(x,y - 1))   if (false == toBeConsumed.contains(new Point(x,y - 1))) {
    southAvail=true;
    ++available;
  }
  boolean westAvail=false;
  if (contains(x - 1,y))   if (false == toBeConsumed.contains(new Point(x - 1,y))) {
    westAvail=true;
    ++available;
  }
  if (available == 4 && toBeConsumed.size() != 0)   throw new IllegalStateException("String_Node_Str");
 else   if (available == 4 && toBeConsumed.size() == 0) {
    log.exiting(className,"String_Node_Str",true);
    return true;
  }
  if (available == 3) {
    if (!northAvail) {
      if (false == contains(x - 1,y - 1) || toBeConsumed.contains(new Point(x - 1,y - 1))) {
        log.exiting(className,"String_Node_Str",false);
        return false;
      }
      if (false == contains(x + 1,y - 1) || toBeConsumed.contains(new Point(x + 1,y - 1))) {
        log.exiting(className,"String_Node_Str",false);
        return false;
      }
      log.exiting(className,"String_Node_Str",true);
      return true;
    }
 else     if (!eastAvail) {
      if (false == contains(x - 1,y + 1) || toBeConsumed.contains(new Point(x - 1,y + 1))) {
        log.exiting(className,"String_Node_Str",false);
        return false;
      }
      if (false == contains(x - 1,y - 1) || toBeConsumed.contains(new Point(x - 1,y - 1))) {
        log.exiting(className,"String_Node_Str",false);
        return false;
      }
      log.exiting(className,"String_Node_Str",true);
      return true;
    }
 else     if (!southAvail) {
      if (false == contains(x - 1,y + 1) || toBeConsumed.contains(new Point(x - 1,y + 1))) {
        log.exiting(className,"String_Node_Str",false);
        return false;
      }
      if (false == contains(x + 1,y + 1) || toBeConsumed.contains(new Point(x + 1,y + 1))) {
        log.exiting(className,"String_Node_Str",false);
        return false;
      }
      log.exiting(className,"String_Node_Str",true);
      return true;
    }
 else     if (!westAvail) {
      if (false == contains(x + 1,y + 1) || toBeConsumed.contains(new Point(x + 1,y + 1))) {
        log.exiting(className,"String_Node_Str",false);
        return false;
      }
      if (false == contains(x + 1,y - 1) || toBeConsumed.contains(new Point(x + 1,y - 1))) {
        log.exiting(className,"String_Node_Str",false);
        return false;
      }
      log.exiting(className,"String_Node_Str",true);
      return true;
    }
 else     throw new IllegalStateException("String_Node_Str");
  }
  if (available == 2) {
    log.exiting(className,"String_Node_Str",false);
    return false;
  }
  if (available == 1) {
    log.exiting(className,"String_Node_Str",true);
    return true;
  }
  if (available == 0)   return true;
  if (available == 0 && toBeConsumed.size() != getArea())   throw new IllegalStateException("String_Node_Str" + toBeConsumed.size() + "String_Node_Str"+ getArea());
  throw new IllegalAccessError("String_Node_Str");
}