Program: 84009
Project: 84009
Buggy source:
public static boolean evaluate(BoolCommonExpression expression,Object target,PropertyModel properties){
  if (expression instanceof EqExpression) {
    return equals((EqExpression)expression,target,properties);
  }
  if (expression instanceof NeExpression) {
    return !equals((NeExpression)expression,target,properties);
  }
  if (expression instanceof AndExpression) {
    AndExpression e=(AndExpression)expression;
    return evaluate(e.getLHS(),target,properties) && evaluate(e.getRHS(),target,properties);
  }
  if (expression instanceof OrExpression) {
    OrExpression e=(OrExpression)expression;
    return evaluate(e.getLHS(),target,properties) || evaluate(e.getRHS(),target,properties);
  }
  if (expression instanceof BooleanLiteral) {
    return ((BooleanLiteral)expression).getValue();
  }
  if (expression instanceof GtExpression) {
    return compareTo((GtExpression)expression,target,properties) > 0;
  }
  if (expression instanceof LtExpression) {
    return compareTo((LtExpression)expression,target,properties) < 0;
  }
  if (expression instanceof GeExpression) {
    return compareTo((GeExpression)expression,target,properties) >= 0;
  }
  if (expression instanceof LeExpression) {
    return compareTo((LeExpression)expression,target,properties) <= 0;
  }
  if (expression instanceof NotExpression) {
    NotExpression e=(NotExpression)expression;
    Boolean rt=(Boolean)evaluate(e.getExpression(),target,properties);
    return !rt;
  }
  if (expression instanceof SubstringOfMethodCallExpression) {
    SubstringOfMethodCallExpression e=(SubstringOfMethodCallExpression)expression;
    String targetValue=(String)evaluate(e.getTarget(),target,properties);
    String searchValue=(String)evaluate(e.getValue(),target,properties);
    return targetValue != null && searchValue != null && targetValue.contains(searchValue);
  }
  throw new UnsupportedOperationException("String_Node_Str" + expression);
}

Fixed version (ground truth):
public static boolean evaluate(BoolCommonExpression expression,Object target,PropertyModel properties){
  if (expression instanceof EqExpression) {
    return equals((EqExpression)expression,target,properties);
  }
  if (expression instanceof NeExpression) {
    return !equals((NeExpression)expression,target,properties);
  }
  if (expression instanceof AndExpression) {
    AndExpression e=(AndExpression)expression;
    return evaluate(e.getLHS(),target,properties) && evaluate(e.getRHS(),target,properties);
  }
  if (expression instanceof OrExpression) {
    OrExpression e=(OrExpression)expression;
    return evaluate(e.getLHS(),target,properties) || evaluate(e.getRHS(),target,properties);
  }
  if (expression instanceof BooleanLiteral) {
    return ((BooleanLiteral)expression).getValue();
  }
  if (expression instanceof GtExpression) {
    return compareTo((GtExpression)expression,target,properties) > 0;
  }
  if (expression instanceof LtExpression) {
    return compareTo((LtExpression)expression,target,properties) < 0;
  }
  if (expression instanceof GeExpression) {
    return compareTo((GeExpression)expression,target,properties) >= 0;
  }
  if (expression instanceof LeExpression) {
    return compareTo((LeExpression)expression,target,properties) <= 0;
  }
  if (expression instanceof NotExpression) {
    NotExpression e=(NotExpression)expression;
    Boolean rt=(Boolean)evaluate(e.getExpression(),target,properties);
    return !rt;
  }
  if (expression instanceof SubstringOfMethodCallExpression) {
    SubstringOfMethodCallExpression e=(SubstringOfMethodCallExpression)expression;
    String targetValue=(String)evaluate(e.getTarget(),target,properties);
    String searchValue=(String)evaluate(e.getValue(),target,properties);
    return targetValue != null && searchValue != null && targetValue.contains(searchValue);
  }
  if (expression instanceof ParenExpression) {
    Object o=null;
  }
  throw new UnsupportedOperationException("String_Node_Str" + expression);
}