Program: 39508
Project: 39508
Buggy source:
@Override public List<CssDeclaration> resolveShorthand(String shorthandExpression){
  String widthPropName=MessageFormat.format(_0_WIDTH,getPrefix());
  String stylePropName=MessageFormat.format(_0_STYLE,getPrefix());
  String colorPropName=MessageFormat.format(_0_COLOR,getPrefix());
  if (CssConstants.INITIAL.equals(shorthandExpression) || CssConstants.INHERIT.equals(shorthandExpression)) {
    return Arrays.asList(new CssDeclaration(widthPropName,shorthandExpression),new CssDeclaration(stylePropName,shorthandExpression),new CssDeclaration(colorPropName,shorthandExpression));
  }
  String[] props=shorthandExpression.split("String_Node_Str");
  String borderColorValue=null;
  String borderStyleValue=null;
  String borderWidthValue=null;
  for (  String value : props) {
    if (CssConstants.BORDER_WIDTH_VALUES.contains(value) || CssUtils.isNumericValue(value) || CssUtils.isMetricValue(value)) {
      borderWidthValue=value;
    }
 else     if (CssConstants.BORDER_STYLE_VALUES.contains(value)) {
      borderStyleValue=value;
    }
 else     if (CssUtils.isColorProperty(value)) {
      borderColorValue=value;
    }
  }
  List<CssDeclaration> resolvedDecl=new ArrayList<>();
  resolvedDecl.add(new CssDeclaration(widthPropName,borderWidthValue == null ? CssConstants.INITIAL : borderWidthValue));
  resolvedDecl.add(new CssDeclaration(stylePropName,borderStyleValue == null ? CssConstants.INITIAL : borderStyleValue));
  resolvedDecl.add(new CssDeclaration(colorPropName,borderColorValue == null ? CssConstants.INITIAL : borderColorValue));
  return resolvedDecl;
}

Fixed version (ground truth):
@Override public List<CssDeclaration> resolveShorthand(String shorthandExpression){
  String widthPropName=MessageFormat.format(_0_WIDTH,getPrefix());
  String stylePropName=MessageFormat.format(_0_STYLE,getPrefix());
  String colorPropName=MessageFormat.format(_0_COLOR,getPrefix());
  if (CssConstants.INITIAL.equals(shorthandExpression) || CssConstants.INHERIT.equals(shorthandExpression)) {
    return Arrays.asList(new CssDeclaration(widthPropName,shorthandExpression),new CssDeclaration(stylePropName,shorthandExpression),new CssDeclaration(colorPropName,shorthandExpression));
  }
  String[] props=shorthandExpression.split("String_Node_Str");
  String borderColorValue=null;
  String borderStyleValue=null;
  String borderWidthValue=null;
  for (  String value : props) {
    if (CssConstants.BORDER_WIDTH_VALUES.contains(value) || CssUtils.isNumericValue(value) || CssUtils.isMetricValue(value)|| CssUtils.isRelativeValue(value)) {
      borderWidthValue=value;
    }
 else     if (CssConstants.BORDER_STYLE_VALUES.contains(value)) {
      borderStyleValue=value;
    }
 else     if (CssUtils.isColorProperty(value)) {
      borderColorValue=value;
    }
  }
  List<CssDeclaration> resolvedDecl=new ArrayList<>();
  resolvedDecl.add(new CssDeclaration(widthPropName,borderWidthValue == null ? CssConstants.INITIAL : borderWidthValue));
  resolvedDecl.add(new CssDeclaration(stylePropName,borderStyleValue == null ? CssConstants.INITIAL : borderStyleValue));
  resolvedDecl.add(new CssDeclaration(colorPropName,borderColorValue == null ? CssConstants.INITIAL : borderColorValue));
  return resolvedDecl;
}