Program: 9989
Project: 9989
Buggy source:
@Override protected void paintComponent(Graphics g){
  if (eval != null) {
    Graphics2D g2D;
    g2D=(Graphics2D)g;
    AlphaComposite ac=AlphaComposite.getInstance(AlphaComposite.SRC_OVER,0.5f);
    g2D.setColor(Color.YELLOW);
    g2D.fill(oldConcept);
    g2D.drawString(model.getOldConceptOWLAPI().toString(),310,10);
    g2D.setColor(Color.ORANGE);
    int p=30;
    for (int i=0; i < conceptVector.size(); i++) {
      g2D.drawString(conceptVector.get(i),310,p);
      p=p + 20;
    }
    g2D.setComposite(ac);
    g2D.fill(newConcept);
    g2D.setColor(Color.BLACK);
    if (coveredIndividualSize != model.getReasoner().getIndividuals(model.getCurrentConcept()).size() && coveredIndividualSize != 0) {
      g2D.drawLine(x1 - 1 - shiftOldConcept,y1 - 1,x2 + 1 - shiftOldConcept,y1 - 1);
      g2D.drawLine(x1 - shiftOldConcept,centerY - 1,x2 - shiftOldConcept,centerY - 1);
      g2D.drawLine(x1 - shiftOldConcept,centerY,x2 - shiftOldConcept,centerY);
      g2D.drawLine(x1 - shiftOldConcept,centerY + 1,x2 - shiftOldConcept,centerY + 1);
      g2D.drawLine(x1 - 1 - shiftOldConcept,y2 + 1,x2 + 1 - shiftOldConcept,y2 + 1);
      g2D.drawLine(x1 - 1 - shiftOldConcept,y1 - 1,x1 - 1 - shiftOldConcept,y2 + 1);
      g2D.drawLine(centerX - 1 - shiftOldConcept,y1,centerX - 1 - shiftOldConcept,y2);
      g2D.drawLine(centerX - shiftOldConcept,y1,centerX - shiftOldConcept,y2);
      g2D.drawLine(centerX + 1 - shiftOldConcept,y1,centerX + 1 - shiftOldConcept,y2);
      g2D.drawLine(x2 + 1 - shiftOldConcept,y1 - 1,x2 + 1 - shiftOldConcept,y2 + 1);
    }
    g2D.drawLine(x1 - 1 + shiftCovered,y1 - 1,x2 + 1 + shiftCovered,y1 - 1);
    g2D.drawLine(x1 + shiftCovered,centerY - 1,x2 + shiftCovered,centerY - 1);
    g2D.drawLine(x1 + shiftCovered,centerY,x2 + shiftCovered,centerY);
    g2D.drawLine(x1 + shiftCovered,centerY + 1,x2 + shiftCovered,centerY + 1);
    g2D.drawLine(x1 - 1 + shiftCovered,y2 + 1,x2 + 1 + shiftCovered,y2 + 1);
    g2D.drawLine(x1 - 1 + shiftCovered,y1 - 1,x1 - 1 + shiftCovered,y2 + 1);
    g2D.drawLine(centerX - 1 + shiftCovered,y1,centerX - 1 + shiftCovered,y2);
    g2D.drawLine(centerX + shiftCovered,y1,centerX + shiftCovered,y2);
    g2D.drawLine(centerX + 1 + shiftCovered,y1,centerX + 1 + shiftCovered,y2);
    g2D.drawLine(x2 + 1 + shiftCovered,y1 - 1,x2 + 1 + shiftCovered,y2 + 1);
    if (coveredIndividualSize != model.getReasoner().getIndividuals(model.getCurrentConcept()).size()) {
      g2D.drawLine(x1 - 1 + shiftNewConcept,y1 - 1,x2 + 1 + shiftNewConcept,y1 - 1);
      g2D.drawLine(x1 + shiftNewConcept,centerY - 1,x2 + shiftNewConcept,centerY - 1);
      g2D.drawLine(x1 + shiftNewConcept,centerY,x2 + shiftNewConcept,centerY);
      g2D.drawLine(x1 + shiftNewConcept,centerY + 1,x2 + shiftNewConcept,centerY + 1);
      g2D.drawLine(x1 - 1 + shiftNewConcept,y2 + 1,x2 + 1 + shiftNewConcept,y2 + 1);
      g2D.drawLine(x1 - 1 + shiftNewConcept,y1 - 1,x1 - 1 + shiftNewConcept,y2 + 1);
      g2D.drawLine(centerX - 1 + shiftNewConcept,y1,centerX - 1 + shiftNewConcept,y2);
      g2D.drawLine(centerX + shiftNewConcept,y1,centerX + shiftNewConcept,y2);
      g2D.drawLine(centerX + 1 + shiftNewConcept,y1,centerX + 1 + shiftNewConcept,y2);
      g2D.drawLine(x2 + 1 + shiftNewConcept,y1 - 1,x2 + 1 + shiftNewConcept,y2 + 1);
    }
    if (((EvaluatedDescriptionClass)eval).getAddition() != 1.0) {
      g2D.drawLine(x1 - 1 + shiftNewConceptX,y1 - 1 + shiftNewConcept,x2 + 1 + shiftNewConceptX,y1 - 1 + shiftNewConcept);
      g2D.drawLine(x1 + shiftNewConceptX,centerY - 1 + shiftNewConcept,x2 + shiftNewConceptX,centerY - 1 + shiftNewConcept);
      g2D.drawLine(x1 + shiftNewConceptX,centerY + shiftNewConcept,x2 + shiftNewConceptX,centerY + shiftNewConcept);
      g2D.drawLine(x1 + shiftNewConceptX,centerY + 1 + shiftNewConcept,x2 + shiftNewConceptX,centerY + 1 + shiftNewConcept);
      g2D.drawLine(x1 - 1 + shiftNewConceptX,y2 + 1 + shiftNewConcept,x2 + 1 + shiftNewConceptX,y2 + 1 + shiftNewConcept);
      g2D.drawLine(x1 - 1 + shiftNewConceptX,y1 - 1 + shiftNewConcept,x1 - 1 + shiftNewConceptX,y2 + 1 + shiftNewConcept);
      g2D.drawLine(centerX - 1 + shiftNewConceptX,y1 + shiftNewConcept,centerX - 1 + shiftNewConceptX,y2 + shiftNewConcept);
      g2D.drawLine(centerX + shiftNewConceptX,y1 + shiftNewConcept,centerX + shiftNewConceptX,y2 + shiftNewConcept);
      g2D.drawLine(centerX + 1 + shiftNewConceptX,y1 + shiftNewConcept,centerX + 1 + shiftNewConceptX,y2 + shiftNewConcept);
      g2D.drawLine(x2 + 1 + shiftNewConceptX,y1 - 1 + shiftNewConcept,x2 + 1 + shiftNewConceptX,y2 + 1 + shiftNewConcept);
    }
    for (int i=0; i < posCovIndVector.size(); i++) {
      g2D.setColor(Color.GREEN);
      g2D.drawString(posCovIndVector.get(i).getPoint(),posCovIndVector.get(i).getXAxis(),posCovIndVector.get(i).getYAxis());
    }
    for (int i=0; i < posNotCovIndVector.size(); i++) {
      g2D.setColor(Color.RED);
      g2D.drawString(posNotCovIndVector.get(i).getPoint(),posNotCovIndVector.get(i).getXAxis(),posNotCovIndVector.get(i).getYAxis());
    }
    for (int i=0; i < additionalIndividuals.size(); i++) {
      g2D.setColor(Color.BLACK);
      g2D.drawString(additionalIndividuals.get(i).getPoint(),additionalIndividuals.get(i).getXAxis(),additionalIndividuals.get(i).getYAxis());
    }
    this.setVisible(true);
    panel.repaint();
  }
}

Fixed version (ground truth):
@Override protected void paintComponent(Graphics g){
  if (eval != null) {
    Graphics2D g2D;
    g2D=(Graphics2D)g;
    AlphaComposite ac=AlphaComposite.getInstance(AlphaComposite.SRC_OVER,0.5f);
    g2D.setColor(Color.YELLOW);
    g2D.fill(oldConcept);
    g2D.drawString(model.getOldConceptOWLAPI().toString(),310,10);
    g2D.setColor(Color.ORANGE);
    int p=30;
    for (int i=0; i < conceptVector.size(); i++) {
      g2D.drawString(conceptVector.get(i),310,p);
      p=p + 20;
    }
    g2D.setComposite(ac);
    g2D.fill(newConcept);
    g2D.setColor(Color.BLACK);
    if (coveredIndividualSize != model.getReasoner().getIndividuals(model.getCurrentConcept()).size() && coveredIndividualSize != 0) {
      g2D.drawLine(x1 - 1 - shiftOldConcept,y1 - 1,x2 + 1 - shiftOldConcept,y1 - 1);
      g2D.drawLine(x1 - shiftOldConcept,centerY - 1,x2 - shiftOldConcept,centerY - 1);
      g2D.drawLine(x1 - shiftOldConcept,centerY,x2 - shiftOldConcept,centerY);
      g2D.drawLine(x1 - shiftOldConcept,centerY + 1,x2 - shiftOldConcept,centerY + 1);
      g2D.drawLine(x1 - 1 - shiftOldConcept,y2 + 1,x2 + 1 - shiftOldConcept,y2 + 1);
      g2D.drawLine(x1 - 1 - shiftOldConcept,y1 - 1,x1 - 1 - shiftOldConcept,y2 + 1);
      g2D.drawLine(centerX - 1 - shiftOldConcept,y1,centerX - 1 - shiftOldConcept,y2);
      g2D.drawLine(centerX - shiftOldConcept,y1,centerX - shiftOldConcept,y2);
      g2D.drawLine(centerX + 1 - shiftOldConcept,y1,centerX + 1 - shiftOldConcept,y2);
      g2D.drawLine(x2 + 1 - shiftOldConcept,y1 - 1,x2 + 1 - shiftOldConcept,y2 + 1);
    }
    g2D.drawLine(x1 - 1 + shiftCovered,y1 - 1,x2 + 1 + shiftCovered,y1 - 1);
    g2D.drawLine(x1 + shiftCovered,centerY - 1,x2 + shiftCovered,centerY - 1);
    g2D.drawLine(x1 + shiftCovered,centerY,x2 + shiftCovered,centerY);
    g2D.drawLine(x1 + shiftCovered,centerY + 1,x2 + shiftCovered,centerY + 1);
    g2D.drawLine(x1 - 1 + shiftCovered,y2 + 1,x2 + 1 + shiftCovered,y2 + 1);
    g2D.drawLine(x1 - 1 + shiftCovered,y1 - 1,x1 - 1 + shiftCovered,y2 + 1);
    g2D.drawLine(centerX - 1 + shiftCovered,y1,centerX - 1 + shiftCovered,y2);
    g2D.drawLine(centerX + shiftCovered,y1,centerX + shiftCovered,y2);
    g2D.drawLine(centerX + 1 + shiftCovered,y1,centerX + 1 + shiftCovered,y2);
    g2D.drawLine(x2 + 1 + shiftCovered,y1 - 1,x2 + 1 + shiftCovered,y2 + 1);
    if (coveredIndividualSize != model.getReasoner().getIndividuals(model.getCurrentConcept()).size()) {
      g2D.drawLine(x1 - 1 + shiftNewConcept,y1 - 1,x2 + 1 + shiftNewConcept,y1 - 1);
      g2D.drawLine(x1 + shiftNewConcept,centerY - 1,x2 + shiftNewConcept,centerY - 1);
      g2D.drawLine(x1 + shiftNewConcept,centerY,x2 + shiftNewConcept,centerY);
      g2D.drawLine(x1 + shiftNewConcept,centerY + 1,x2 + shiftNewConcept,centerY + 1);
      g2D.drawLine(x1 - 1 + shiftNewConcept,y2 + 1,x2 + 1 + shiftNewConcept,y2 + 1);
      g2D.drawLine(x1 - 1 + shiftNewConcept,y1 - 1,x1 - 1 + shiftNewConcept,y2 + 1);
      g2D.drawLine(centerX - 1 + shiftNewConcept,y1,centerX - 1 + shiftNewConcept,y2);
      g2D.drawLine(centerX + shiftNewConcept,y1,centerX + shiftNewConcept,y2);
      g2D.drawLine(centerX + 1 + shiftNewConcept,y1,centerX + 1 + shiftNewConcept,y2);
      g2D.drawLine(x2 + 1 + shiftNewConcept,y1 - 1,x2 + 1 + shiftNewConcept,y2 + 1);
    }
    if (((EvaluatedDescriptionClass)eval).getAddition() != 1.0 && ((EvaluatedDescriptionClass)eval).getCoverage() == 1.0) {
      g2D.drawLine(x1 - 1 + shiftNewConceptX,y1 - 1 + shiftNewConcept,x2 + 1 + shiftNewConceptX,y1 - 1 + shiftNewConcept);
      g2D.drawLine(x1 + shiftNewConceptX,centerY - 1 + shiftNewConcept,x2 + shiftNewConceptX,centerY - 1 + shiftNewConcept);
      g2D.drawLine(x1 + shiftNewConceptX,centerY + shiftNewConcept,x2 + shiftNewConceptX,centerY + shiftNewConcept);
      g2D.drawLine(x1 + shiftNewConceptX,centerY + 1 + shiftNewConcept,x2 + shiftNewConceptX,centerY + 1 + shiftNewConcept);
      g2D.drawLine(x1 - 1 + shiftNewConceptX,y2 + 1 + shiftNewConcept,x2 + 1 + shiftNewConceptX,y2 + 1 + shiftNewConcept);
      g2D.drawLine(x1 - 1 + shiftNewConceptX,y1 - 1 + shiftNewConcept,x1 - 1 + shiftNewConceptX,y2 + 1 + shiftNewConcept);
      g2D.drawLine(centerX - 1 + shiftNewConceptX,y1 + shiftNewConcept,centerX - 1 + shiftNewConceptX,y2 + shiftNewConcept);
      g2D.drawLine(centerX + shiftNewConceptX,y1 + shiftNewConcept,centerX + shiftNewConceptX,y2 + shiftNewConcept);
      g2D.drawLine(centerX + 1 + shiftNewConceptX,y1 + shiftNewConcept,centerX + 1 + shiftNewConceptX,y2 + shiftNewConcept);
      g2D.drawLine(x2 + 1 + shiftNewConceptX,y1 - 1 + shiftNewConcept,x2 + 1 + shiftNewConceptX,y2 + 1 + shiftNewConcept);
    }
    for (int i=0; i < posCovIndVector.size(); i++) {
      g2D.setColor(Color.GREEN);
      g2D.drawString(posCovIndVector.get(i).getPoint(),posCovIndVector.get(i).getXAxis(),posCovIndVector.get(i).getYAxis());
    }
    for (int i=0; i < posNotCovIndVector.size(); i++) {
      g2D.setColor(Color.RED);
      g2D.drawString(posNotCovIndVector.get(i).getPoint(),posNotCovIndVector.get(i).getXAxis(),posNotCovIndVector.get(i).getYAxis());
    }
    for (int i=0; i < additionalIndividuals.size(); i++) {
      g2D.setColor(Color.BLACK);
      g2D.drawString(additionalIndividuals.get(i).getPoint(),additionalIndividuals.get(i).getXAxis(),additionalIndividuals.get(i).getYAxis());
    }
    this.setVisible(true);
    panel.repaint();
  }
}