Load items from a dynamic multi-item carousel without repeating the information

I have a problem creating a dynamic carousel , I created a loop that takes wordpress posts and creates slider items in case it has 3 columns, a carousel multi items I use the arrow to move to the next problem is that every 3 views are all repeated until I move to the next, how do I display the information without repeating, the columns are bootstrap , follow the code.

<?php

       $slides = array(); 

        $args = array( 'category_name' => 'servicos', 'nopaging'=>true, 'posts_per_page'=>5 );

    $slider_query = new WP_Query( $args );
    if ( $slider_query->have_posts() ) {
        while ( $slider_query->have_posts() ) {
            $slider_query->the_post();
            if(has_post_thumbnail()){
                $temp = array();
                $thumb_id = get_post_thumbnail_id();
                $thumb_url_array = wp_get_attachment_image_src($thumb_id, 'full', true);
                $thumb_url = $thumb_url_array[0];
                $temp['title'] = get_the_title();
                $temp['excerpt'] = get_the_excerpt();
                $temp['image'] = $thumb_url;


                $slides[] = $temp;
            }
        }
    } 
    wp_reset_postdata();


    ?>


    <div class="nossos-servicos">
        <div class="container">
            <div class="row">
                <div class="col-md-12">
                    <center>
                        <h2>NOSSOS SERVIÇOS</h2>
                        <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.</p>
                        <br><br>
                    </center>
                </div>
            </div>
            <?php if(count($slides) > 0) { ?>
            <div class="row">
                <div class="col-md-12">
                    <center>
                        <!--<div class="container">-->
                            <!--<div class="col-xs-12">-->
                                <div class="carousel slide" id="myCarousel">
                                    <div class="carousel-inner">

                                            <?php //for($x=0;$x<10;$x++){ ?>

                                            <?php $i=0; foreach($slides as $slide) { extract($slide); ?>
                                                <div class="item <?php if($i==0) { echo "active"; } ?>">


                                                        <ul class="thumbnails">
                                                            <?php for($y=0;$y<3;$y++){ ?>
                                                                <li class="col-sm-4">
                                                                    <div class="casing">
                                                                        <img src="<?php echo $image ?>" alt="">
                                                                        <div class="caption">
                                                                            <h4><?php echo $title; ?></h4>
                                                                            <p><?php echo $excerpt; ?></p>
                                                                            <a class="btn btn-mini" href="#">saiba mais</a><!-- » -->
                                                                        </div>
                                                                    </div>
                                                                </li>
                                                            <?php } ?>

                                                        </ul>



                                                  </div><!-- /Slide1 --> 


                                            <?php $i++; } ?>
                                            <?php //} ?>  <!-- fim for x --> 

                                    </div>
                                   <nav>
                                        <ul class="control-box pager">
                                            <li class="left"><a data-slide="prev" href="#myCarousel" class="arrowStil"><i class="glyphicon glyphicon-chevron-left"></i></a></li>
                                            <li class="right"><a data-slide="next" href="#myCarousel" class="arrowStil"><i class="glyphicon glyphicon-chevron-right"></i></li>
                                        </ul>
                                    </nav>
                                   <!-- /.control-box -->   

                                </div><!-- /#myCarousel -->

                            <!--</div>--><!-- /.col-xs-12 -->          
                        <!--</div>--><!-- /.container -->
                    </center>
                </div>
            </div>

        <?php }?><!-- if se tem slider --> 
        </div>
    </div>