Program: 56309
Project: 56309
Buggy source:
private IGraphicsGrid getGraphicsGrid(){
  return new IGraphicsGrid(){
    @Override public void setBackgroundListener(    IGraphicsBackgroundListener backgroundListener){
    }
    @Override public int nextDrawableX(    int x,    int y,    int maxX){
      return x + 1;
    }
    @Override public boolean isFogOfWarVisible(    int x,    int y){
      return true;
    }
    @Override public boolean isBorder(    int x,    int y){
      return false;
    }
    @Override public short getWidth(){
      return WIDTH;
    }
    @Override public byte getVisibleStatus(    int x,    int y){
      return CommonConstants.FOG_OF_WAR_VISIBLE;
    }
    @Override public byte getPlayerIdAt(    int x,    int y){
      return 0;
    }
    @Override public IMovable getMovableAt(    int x,    int y){
      return null;
    }
    @Override public IMapObject getMapObjectsAt(    int x,    int y){
      return null;
    }
    @Override public ELandscapeType getLandscapeTypeAt(    int x,    int y){
      return ELandscapeType.GRASS;
    }
    @Override public byte getHeightAt(    int x,    int y){
      return 0;
    }
    @Override public short getHeight(){
      return HEIGHT;
    }
    @Override public int getDebugColorAt(    int x,    int y){
      int value=grid.getPartitionIdAt(x,y);
      return Color.getARGB((value % 3) * 0.33f,((value / 3) % 3) * 0.33f,((value / 9) % 3) * 0.33f,1);
    }
  }
;
}

Fixed version (ground truth):
private IGraphicsGrid getGraphicsGrid(){
  return new IGraphicsGrid(){
    @Override public void setBackgroundListener(    IGraphicsBackgroundListener backgroundListener){
    }
    @Override public int nextDrawableX(    int x,    int y,    int maxX){
      return x + 1;
    }
    @Override public boolean isFogOfWarVisible(    int x,    int y){
      return true;
    }
    @Override public boolean isBorder(    int x,    int y){
      byte playerAtPos=getPlayerIdAt(x,y);
      for (      EDirection dir : EDirection.values) {
        int currX=x + dir.gridDeltaX;
        int currY=y + dir.gridDeltaY;
        if (currX >= 0 && currY >= 0 && currX < WIDTH && currY < HEIGHT && playerAtPos != getPlayerIdAt(currX,currY)) {
          return true;
        }
      }
      return false;
    }
    @Override public short getWidth(){
      return WIDTH;
    }
    @Override public byte getVisibleStatus(    int x,    int y){
      return CommonConstants.FOG_OF_WAR_VISIBLE;
    }
    @Override public byte getPlayerIdAt(    int x,    int y){
      return grid.getPlayerIdAt(x,y);
    }
    @Override public IMovable getMovableAt(    int x,    int y){
      return null;
    }
    @Override public IMapObject getMapObjectsAt(    int x,    int y){
      return null;
    }
    @Override public ELandscapeType getLandscapeTypeAt(    int x,    int y){
      return ELandscapeType.GRASS;
    }
    @Override public byte getHeightAt(    int x,    int y){
      return 0;
    }
    @Override public short getHeight(){
      return HEIGHT;
    }
    @Override public int getDebugColorAt(    int x,    int y){
      int value=grid.getTowerCountAt(x,y);
      return Color.getARGB((value % 3) * 0.33f,((value / 3) % 3) * 0.33f,((value / 9) % 3) * 0.33f,1);
    }
  }
;
}