Program: 6623
Project: 6623
Buggy source:
private List<Location> getLateralLocations2D(Location location,Compartment compartment){
  float distanceToCentre=getDistanceToCentre(location,compartment);
  CellIndexExpression newIndexX=location.getIndices()[1].getDeltaIndex(-1);
  CellIndexExpression newIndexY=location.getIndices()[0].getDeltaIndex(-1);
  CellIndexExpression newIndexX2=location.getIndices()[1].getDeltaIndex(1);
  CellIndexExpression newIndexY2=location.getIndices()[0].getDeltaIndex(1);
  List<Location> result=new ArrayList<Location>();
  Location current=new Location(location.getName(),newIndexY,newIndexX);
  if (Math.abs(distanceToCentre - getDistanceToCentre(current,compartment)) < 0.5f) {
    result.add(current);
  }
  current=new Location(location.getName(),newIndexY,location.getIndices()[1]);
  if (Math.abs(distanceToCentre - getDistanceToCentre(current,compartment)) < 0.5f) {
    result.add(current);
  }
  current=new Location(location.getName(),newIndexY,newIndexX2);
  if (Math.abs(distanceToCentre - getDistanceToCentre(current,compartment)) < 0.5f) {
    result.add(current);
  }
  current=new Location(location.getName(),location.getIndices()[0],newIndexX);
  if (Math.abs(distanceToCentre - getDistanceToCentre(current,compartment)) < 0.5f) {
    result.add(current);
  }
  current=new Location(location.getName(),location.getIndices()[0],newIndexX2);
  if (Math.abs(distanceToCentre - getDistanceToCentre(current,compartment)) < 0.5f) {
    result.add(current);
  }
  current=new Location(location.getName(),newIndexY2,newIndexX);
  if (Math.abs(distanceToCentre - getDistanceToCentre(current,compartment)) < 0.5f) {
    result.add(current);
  }
  current=new Location(location.getName(),newIndexY2,location.getIndices()[1]);
  if (Math.abs(distanceToCentre - getDistanceToCentre(current,compartment)) < 0.5f) {
    result.add(current);
  }
  current=new Location(location.getName(),newIndexY2,newIndexX2);
  if (Math.abs(distanceToCentre - getDistanceToCentre(current,compartment)) < 0.5f) {
    result.add(current);
  }
  return result;
}

Fixed version (ground truth):
private List<Location> getLateralLocations2D(Location location,Compartment compartment){
  float distanceToCentre=getDistanceToCentre(location,compartment);
  CellIndexExpression newIndexX=location.getIndices()[1].getDeltaIndex(-1);
  CellIndexExpression newIndexY=location.getIndices()[0].getDeltaIndex(-1);
  CellIndexExpression newIndexX2=location.getIndices()[1].getDeltaIndex(1);
  CellIndexExpression newIndexY2=location.getIndices()[0].getDeltaIndex(1);
  List<Location> result=new ArrayList<Location>();
  result.add(location);
  Location current=new Location(location.getName(),newIndexY,newIndexX);
  if (Math.abs(distanceToCentre - getDistanceToCentre(current,compartment)) < 0.5f) {
    result.add(current);
  }
  current=new Location(location.getName(),newIndexY,location.getIndices()[1]);
  if (Math.abs(distanceToCentre - getDistanceToCentre(current,compartment)) < 0.5f) {
    result.add(current);
  }
  current=new Location(location.getName(),newIndexY,newIndexX2);
  if (Math.abs(distanceToCentre - getDistanceToCentre(current,compartment)) < 0.5f) {
    result.add(current);
  }
  current=new Location(location.getName(),location.getIndices()[0],newIndexX);
  if (Math.abs(distanceToCentre - getDistanceToCentre(current,compartment)) < 0.5f) {
    result.add(current);
  }
  current=new Location(location.getName(),location.getIndices()[0],newIndexX2);
  if (Math.abs(distanceToCentre - getDistanceToCentre(current,compartment)) < 0.5f) {
    result.add(current);
  }
  current=new Location(location.getName(),newIndexY2,newIndexX);
  if (Math.abs(distanceToCentre - getDistanceToCentre(current,compartment)) < 0.5f) {
    result.add(current);
  }
  current=new Location(location.getName(),newIndexY2,location.getIndices()[1]);
  if (Math.abs(distanceToCentre - getDistanceToCentre(current,compartment)) < 0.5f) {
    result.add(current);
  }
  current=new Location(location.getName(),newIndexY2,newIndexX2);
  if (Math.abs(distanceToCentre - getDistanceToCentre(current,compartment)) < 0.5f) {
    result.add(current);
  }
  return result;
}