Program: 187972
Project: 187972
Buggy source:
/** 
 * Import the pony from file
 * @return  The pony
 */
public Pony importPony(){
  BufferedImage image=ImageIO.read(new File(file));
  int width=image.getWidth() / this.magnified;
  int height=image.getHeight() / this.magnified;
  int div=this.magnified * this.magnified;
  Pony.Cell cell;
  Pony pony=new Pony(height >> 1,width,null,null);
  for (int y=0; y < height; y+=2)   for (int x=0; x < width; x++) {
    int a=0, r=0, g=0, b=0;
    for (int yy=0; yy < this.magnified; yy++)     for (int xx=0; xx < this.magnified; xx++) {
      int argb=image.getRGB(x * this.magnified + xx,(y * 2) * this.magnified + yy);
      a+=(argb >> 24) & 255;
      r+=(argb >> 16) & 255;
      g+=(argb >> 8) & 255;
      b+=argb & 255;
    }
    a/=div;
    r/=div;
    g/=div;
    b/=div;
    pony.matrix[y][x]=cell=new Pony.Cell(Pony.Cell.PIXELS,new Color(a,r,g,b),null,null);
    if ((y * 2 + 2) * this.magnified <= image.getHeight()) {
      a=r=g=b=0;
      for (int yy=0; yy < this.magnified; yy++)       for (int xx=0; xx < this.magnified; xx++) {
        int argb=image.getRGB(x * this.magnified + xx,(y * 2 + 1) * this.magnified + yy);
        a+=(argb >> 24) & 255;
        r+=(argb >> 16) & 255;
        g+=(argb >> 8) & 255;
        b+=argb & 255;
      }
      a/=div;
      r/=div;
      g/=div;
      b/=div;
      cell.lowerColour=new Color(a,r,g,b);
    }
    if (encoded && (cell.upperColour.getAlpha() == cell.lowerColour.getAlpha())) {
      r=cell.upperColour.getRed();
      g=cell.upperColour.getGreen();
      b=cell.upperColour.getBlue();
      int r2=cell.upperColour.getRed();
      int g2=cell.upperColour.getGreen();
      int b2=cell.upperColour.getBlue();
switch (cell.upperColour.getAlpha()) {
case 100:
        if ((r == 0) && (g == 0) && (b == 255))         pony.matrix[y][x]=new Pony.Cell(Pony.Cell.NNE_SSW,null,null,null);
 else         if ((r == 255) && (g == 0) && (b == 0))         pony.matrix[y][x]=new Pony.Cell(Pony.Cell.NNW_SSE,null,null,null);
      break;
case 99:
    boolean jl=(r & 128) == 128;
  boolean jr=(g & 128) == 128;
int left=r & 127;
int minw=g & 127;
int maxw=b;
boolean jt=(r2 & 128) == 128;
boolean jb=(g2 & 128) == 128;
int top=r2 & 127;
int minh=g2 & 127;
int maxh=b2;
int justification=(jl ? Pony.Balloon.LEFT : Pony.Balloon.NONE) | (jr ? Pony.Balloon.RIGHT : Pony.Balloon.NONE) | (jt ? Pony.Balloon.TOP : Pony.Balloon.NONE)| (jb ? Pony.Balloon.BOTTOM : Pony.Balloon.NONE);
pony.matrix[y][x]=null;
pony.metamatrix[y][x]=new Pony.Meta[]{new Pony.Balloon(left == 0 ? null : new Integer(left),top == 0 ? null : new Integer(top),minw == 0 ? null : new Integer(minw),minh == 0 ? null : new Integer(minh),maxw == 0 ? null : new Integer(maxw),maxh == 0 ? null : new Integer(maxh),justification)};
break;
}
}
}
return pony;
}

Fixed version (ground truth):
/** 
 * Import the pony from file
 * @return  The pony
 * @throws IOException  On I/O error
 */
public Pony importPony() throws IOException {
  BufferedImage image=ImageIO.read(new File(file));
  int width=image.getWidth() / this.magnified;
  int height=image.getHeight() / this.magnified;
  int div=this.magnified * this.magnified;
  Pony.Cell cell;
  Pony pony=new Pony(height >> 1,width,null,null);
  for (int y=0; y < height; y+=2)   for (int x=0; x < width; x++) {
    int a=0, r=0, g=0, b=0;
    for (int yy=0; yy < this.magnified; yy++)     for (int xx=0; xx < this.magnified; xx++) {
      int argb=image.getRGB(x * this.magnified + xx,(y * 2) * this.magnified + yy);
      a+=(argb >> 24) & 255;
      r+=(argb >> 16) & 255;
      g+=(argb >> 8) & 255;
      b+=argb & 255;
    }
    a/=div;
    r/=div;
    g/=div;
    b/=div;
    pony.matrix[y][x]=cell=new Pony.Cell(Pony.Cell.PIXELS,new Color(a,r,g,b),null,null);
    if ((y * 2 + 2) * this.magnified <= image.getHeight()) {
      a=r=g=b=0;
      for (int yy=0; yy < this.magnified; yy++)       for (int xx=0; xx < this.magnified; xx++) {
        int argb=image.getRGB(x * this.magnified + xx,(y * 2 + 1) * this.magnified + yy);
        a+=(argb >> 24) & 255;
        r+=(argb >> 16) & 255;
        g+=(argb >> 8) & 255;
        b+=argb & 255;
      }
      a/=div;
      r/=div;
      g/=div;
      b/=div;
      cell.lowerColour=new Color(a,r,g,b);
    }
    if (encoded && (cell.upperColour.getAlpha() == cell.lowerColour.getAlpha())) {
      r=cell.upperColour.getRed();
      g=cell.upperColour.getGreen();
      b=cell.upperColour.getBlue();
      int r2=cell.upperColour.getRed();
      int g2=cell.upperColour.getGreen();
      int b2=cell.upperColour.getBlue();
switch (cell.upperColour.getAlpha()) {
case 100:
        if ((r == 0) && (g == 0) && (b == 255))         pony.matrix[y][x]=new Pony.Cell(Pony.Cell.NNE_SSW,null,null,null);
 else         if ((r == 255) && (g == 0) && (b == 0))         pony.matrix[y][x]=new Pony.Cell(Pony.Cell.NNW_SSE,null,null,null);
      break;
case 99:
    boolean jl=(r & 128) == 128;
  boolean jr=(g & 128) == 128;
int left=r & 127;
int minw=g & 127;
int maxw=b;
boolean jt=(r2 & 128) == 128;
boolean jb=(g2 & 128) == 128;
int top=r2 & 127;
int minh=g2 & 127;
int maxh=b2;
int justification=(jl ? Pony.Balloon.LEFT : Pony.Balloon.NONE) | (jr ? Pony.Balloon.RIGHT : Pony.Balloon.NONE) | (jt ? Pony.Balloon.TOP : Pony.Balloon.NONE)| (jb ? Pony.Balloon.BOTTOM : Pony.Balloon.NONE);
pony.matrix[y][x]=null;
pony.metamatrix[y][x]=new Pony.Meta[]{new Pony.Balloon(left == 0 ? null : new Integer(left),top == 0 ? null : new Integer(top),minw == 0 ? null : new Integer(minw),minh == 0 ? null : new Integer(minh),maxw == 0 ? null : new Integer(maxw),maxh == 0 ? null : new Integer(maxh),justification)};
break;
}
}
}
return pony;
}