Program: 60166
Project: 60166
Buggy source:
@Override public BackgroundInfo getBackgroundInfo(){
  BackgroundInfo binfo=this.iBackgroundInfo;
  if (binfo != INVALID_BACKGROUND_INFO) {
    return binfo;
  }
  if (element != null && !"String_Node_Str".equals(element.getNodeName())) {
    binfo=null;
  }
  AbstractCSS2Properties props=this.getCssProperties();
  if (props != null) {
    String backgroundText=props.getBackground();
    if (backgroundText != null) {
      if (binfo == null) {
        binfo=new BackgroundInfo();
      }
      String[] backList=backgroundText.split("String_Node_Str");
      for (int i=0; i < backList.length; i++) {
        String back=backList[i];
        if (back.contains("String_Node_Str")) {
          binfo.setBackgroundImage(this.document.getFullURL(back));
        }
        if (ColorFactory.getInstance().getColor(back) != null) {
          binfo.setBackgroundColor(ColorFactory.getInstance().getColor(back));
        }
 else         if (CSSValuesProperties.INHERIT.equalsIgnoreCase(back)) {
          binfo.setBackgroundColor(this.getPreviousRenderState().getBackgroundColor());
        }
        this.applyBackgroundPosition(binfo,back);
        this.applyBackgroundRepeat(binfo,back);
      }
    }
 else {
      String background=this.element.getAttribute(HtmlAttributeProperties.BACKGROUND);
      if ((background != null) && !"String_Node_Str".equals(background)) {
        if (binfo == null) {
          binfo=new BackgroundInfo();
        }
        binfo.setBackgroundImage(this.document.getFullURL(background));
      }
      String backgroundColorText=props.getBackgroundColor();
      if (backgroundColorText != null) {
        if (binfo == null) {
          binfo=new BackgroundInfo();
        }
        if (CSSValuesProperties.INHERIT.equalsIgnoreCase(backgroundColorText)) {
          binfo.setBackgroundColor(this.getPreviousRenderState().getBackgroundColor());
        }
 else {
          binfo.setBackgroundColor(ColorFactory.getInstance().getColor(backgroundColorText));
        }
      }
      String backgroundImageText=props.getBackgroundImage();
      if ((backgroundImageText != null) && (backgroundImageText.length() > 0)) {
        URL backgroundImage=HtmlValues.getURIFromStyleValue(backgroundImageText);
        if (backgroundImage != null) {
          if (binfo == null) {
            binfo=new BackgroundInfo();
          }
          binfo.setBackgroundImage(backgroundImage);
        }
      }
      String backgroundRepeatText=props.getBackgroundRepeat();
      if (backgroundRepeatText != null) {
        if (binfo == null) {
          binfo=new BackgroundInfo();
        }
        this.applyBackgroundRepeat(binfo,backgroundRepeatText);
      }
      String backgroundPositionText=props.getBackgroundPosition();
      if (backgroundPositionText != null) {
        if (binfo == null) {
          binfo=new BackgroundInfo();
        }
        this.applyBackgroundPosition(binfo,backgroundPositionText);
      }
    }
  }
  this.iBackgroundInfo=binfo;
  return binfo;
}

Fixed version (ground truth):
@Override public BackgroundInfo getBackgroundInfo(){
  BackgroundInfo binfo=this.iBackgroundInfo;
  if (binfo != INVALID_BACKGROUND_INFO) {
    return binfo;
  }
  if (element != null && !"String_Node_Str".equals(element.getNodeName())) {
    binfo=null;
  }
  AbstractCSS2Properties props=this.getCssProperties();
  if (props != null) {
    String backgroundText=props.getBackground();
    if (backgroundText != null) {
      if (binfo == null) {
        binfo=new BackgroundInfo();
      }
      if ((backgroundText.startsWith(ColorFactory.RGB_START) || backgroundText.startsWith(ColorFactory.RGB_START)) && backgroundText.endsWith("String_Node_Str")) {
        binfo.setBackgroundColor(ColorFactory.getInstance().getColor(backgroundText));
      }
 else {
        String[] backList=backgroundText.split("String_Node_Str");
        for (int i=0; i < backList.length; i++) {
          String back=backList[i];
          if (back.contains("String_Node_Str")) {
            String start="String_Node_Str";
            int startIdx=start.length();
            int closingIdx=back.lastIndexOf(')');
            String quotedUri=back.substring(startIdx,closingIdx);
            binfo.setBackgroundImage(this.document.getFullURL(quotedUri));
          }
          if (ColorFactory.getInstance().getColor(back) != null) {
            binfo.setBackgroundColor(ColorFactory.getInstance().getColor(back));
          }
 else           if (CSSValuesProperties.INHERIT.equalsIgnoreCase(back)) {
            binfo.setBackgroundColor(this.getPreviousRenderState().getBackgroundColor());
          }
          this.applyBackgroundPosition(binfo,back);
          this.applyBackgroundRepeat(binfo,back);
        }
      }
    }
 else {
      String background=this.element.getAttribute(HtmlAttributeProperties.BACKGROUND);
      if ((background != null) && !"String_Node_Str".equals(background)) {
        if (binfo == null) {
          binfo=new BackgroundInfo();
        }
        binfo.setBackgroundImage(this.document.getFullURL(background));
      }
      String backgroundColorText=props.getBackgroundColor();
      if (backgroundColorText != null) {
        if (binfo == null) {
          binfo=new BackgroundInfo();
        }
        if (CSSValuesProperties.INHERIT.equalsIgnoreCase(backgroundColorText)) {
          binfo.setBackgroundColor(this.getPreviousRenderState().getBackgroundColor());
        }
 else {
          binfo.setBackgroundColor(ColorFactory.getInstance().getColor(backgroundColorText));
        }
      }
      String backgroundImageText=props.getBackgroundImage();
      if ((backgroundImageText != null) && (backgroundImageText.length() > 0)) {
        URL backgroundImage=HtmlValues.getURIFromStyleValue(backgroundImageText);
        if (backgroundImage != null) {
          if (binfo == null) {
            binfo=new BackgroundInfo();
          }
          binfo.setBackgroundImage(backgroundImage);
        }
      }
      String backgroundRepeatText=props.getBackgroundRepeat();
      if (backgroundRepeatText != null) {
        if (binfo == null) {
          binfo=new BackgroundInfo();
        }
        this.applyBackgroundRepeat(binfo,backgroundRepeatText);
      }
      String backgroundPositionText=props.getBackgroundPosition();
      if (backgroundPositionText != null) {
        if (binfo == null) {
          binfo=new BackgroundInfo();
        }
        this.applyBackgroundPosition(binfo,backgroundPositionText);
      }
    }
  }
  this.iBackgroundInfo=binfo;
  return binfo;
}