Problem with custom search form for WP

gistfile1.php

<?php get_header(); ?>
<div id="content" class="site-content" role="main">


  	<?php		
			// get all gets		
			foreach($_GET as $name=>$value) {
				$search_get[$name] = $value;
			}
			
			global $wp_query;
			$s_false = false;
			
			// set custom post type			
			$post_type = array('property');
			
			// get custom taxonomies
			if($search_get['tip'])
				$tax_tip = $search_get['tip'];
			
			if($search_get['status'])
				$tax_status = $search_get['status'];
				
			if($search_get['grad'])
				$tax_grad = $search_get['grad'];
			
			// check beds custom fields
			if($search_get['broj_soba'])
				$meta_query_broj_soba = array(
					'key' => 'broj_soba',
					'value' => $search_get['broj_soba'],
					'compare' => '=',
					'type' => 'BINARY'
				);
			
			// check baths custom fields	
			if($search_get['broj_kupatila'])
				$meta_query_broj_kupatila = array(
					'key' => 'broj_kupatila',
					'value' => $search_get['broj_kupatila'],
					'compare' => '=',
					'type' => 'numeric'
				);
				
			// check price custom fields	
			if ($search_get['cena'] == '0 - 49.999') {
    			$meta_query_cena = array(
					'key' => 'cena',
					'value' => '49',
					'compare' => '<=',
					'type' => 'numeric'
				);
			} elseif ($search_get['cena'] == '50.000 - 99.999') {
				$meta_query_cena = array(
					'key' => 'cena',
					'value' => array( '50', '99' ),
					'compare' => 'BETWEEN',
					'type' => 'numeric'
				);
			} elseif ($search_get['cena'] == '100.000 - 499.999') {
				$meta_query_cena = array(
					'key' => 'cena',
					'value' => array( '100', '499' ),
					'compare' => 'BETWEEN',
					'type' => 'numeric'
				);
			} elseif ($search_get['cena'] == '500.000+') {
				$meta_query_cena = array(
					'key' => 'cena',
					'value' => '500',
					'compare' => '>=',
					'type' => 'numeric'
				);
			} else {
    				$meta_query_cena = array(
					'key' => 'cena',
					'value' => '1',
					'compare' => '>=',
					'type' => 'numeric'
				);
			}
			
			// build meta query
			$meta_query = array();
			
			if(!empty($meta_query_broj_soba))
				array_push($meta_query, $meta_query_broj_soba);
			if(!empty($meta_query_broj_kupatila))
				array_push($meta_query, $meta_query_broj_kupatila);
			if(!empty($meta_query_cena))
				array_push($meta_query, $meta_query_cena);
			if(!empty($search_get)) :
				$args = array(
					'post_type' => $post_type,
					'tip' => $tax_tip,
					'status' => $tax_status,
					'grad' => $tax_grad,
					'order' => 'DESC'
				);
				
				// add meta query
				if(!empty($meta_query))
					$args = array_merge($args, array('meta_query' => $meta_query));
		 		query_posts($args);
		 		
		 		if($s_false) :
		 			$wp_query->is_home = false;
		 			$wp_query->is_search = true;
		 		endif;
		 		
		 	endif;
		 	
		 	get_template_part( 'nekretnine', 'property-search' );
		?>

</div><!-- #content -->
<div id="sidebar">
<?php require_once(get_template_directory() . '/includes/pretraga-nekretnine.php'); // poziv za formu za pretragu nekretnina ?>
<?php require_once(get_template_directory() . '/includes/baneri.php'); // poziv za bannere ?>
</div>
<?php get_footer(); ?>