Live Search Select Picker

HTML

<link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.2/css/bootstrap.css">
<link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/bootstrap-select/1.6.3/css/bootstrap-select.css">
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.2/js/bootstrap.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/bootstrap-select/1.6.3/js/bootstrap-select.js"></script>
<select id="select1" class="selectpicker" data-live-search="true" >
    <option id="lider" value="lider">Líder</option>
    <option value="participante" selected>Participante </option>
    <option value="1">Para Conhecimento</option>
    <option value="2" selected>Participante </option>
    <option value="3">Para Conhecimento</option>
</select>

<select id="select2" class="selectpicker" data-live-search="true" >
    <option value="lider">Líder</option>
    <option value="participante" selected>Participante </option>
    <option value="1">Para Conhecimento</option>
    <option value="2" selected>Participante </option>
    <option value="3">Para Conhecimento</option>
</select>

<select id="select3" class="selectpicker" data-live-search="true" >
    <option value="lider">Líder</option>
    <option value="participante" selected>Participante </option>
    <option value="1">Para Conhecimento</option>
    <option value="2" selected>Participante </option>
    <option value="3">Para Conhecimento</option>
</select>

JavaScript

$(".selectpicker").change(function(){
    var value = $(this).val();
 
    $(this).siblings('select').children('option').each(function() {
        if ( $(this).val() === value ) {
            $(this).attr('disabled',true).siblings().removeAttr('disabled');
            $('.selectpicker').selectpicker('refresh');
        }
    });
});