View difference between Paste ID: CuBQk0xX and y0Tp8GFd

 ##### THE FOLLOWING QUERY GIVES ME THIS ERROR :
 # Warning: odbc_exec(): SQL error: [unixODBC][OpenLink][Virtuoso iODBC Driver][Virtuoso Server]SQ200: Stack Overflow in cost model, SQL state 37000 in SQLExecDirect in /var/www/html/ontowiki-scripts/model_the_source-virtuoso_to_webmap.php on line 20
 
 ##### BUT IT WORKS IF I COMMENT OUT (in the FILTER clause)
 # AND
 # bif:st_intersects ( ?geom, bif:st_geomfromtext("BOX(<?=$xmin?> <?=$ymin?>, <?=$xmax?> <?=$ymax?>)") )
 
 ##### AND IT ALSO WORKS IF I COMMENT OUT (in the FILTER clause)
 # ?min_zoom <= "<?=$zoom?>"^^xsd:integer
 # AND
 # ?max_zoom >= "<?=$zoom?>"^^xsd:integer
 # AND
 
 ##### SO IT'S ONLY WHEN I COMBINE BOTH THAT I GET THE ERROR ?!?!
 
 PREFIX geo: <http://www.opengis.net/ont/geosparql#>
 PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
 PREFIX : <http://dhlabpc2.epfl.ch/OntoWiki/vtm/#>
 
 SELECT *
 FROM <http://dhlabpc2.epfl.ch/OntoWiki/vtm/>
 
 WHERE{
     # select the entity
     ?entity a ?class .
 
     # whose class is a subclass of :class_entity
     ?class rdfs:subClassOf :class_entity .
 
     # get details for the subclass
     ?class rdfs:label ?subclass_label .
     ?class :zindex ?zindex .
     ?class :min_zoom ?min_zoom .
     ?class :max_zoom ?max_zoom .
 
     # that have a defined shape
     ?entity :shape_defined_by ?geometry_defining_entity .
     ?geometry_defining_entity geo:geometry ?geom .
 
     FILTER (
         ?min_zoom <= 19
-        ?min_zoom <= "<?=$zoom?>"^^xsd:integer
+
         ?max_zoom >= 19
-        ?max_zoom >= "<?=$zoom?>"^^xsd:integer
+
         bif:st_intersects ( ?geom, bif:st_geomfromtext("BOX(12.3352 45.4382, 12.33521 45.43821)") )
-        bif:st_intersects ( ?geom, bif:st_geomfromtext("BOX(<?=$xmin?> <?=$ymin?>, <?=$xmax?> <?=$ymax?>)") )
+
 
 }
 ORDER BY ?entity
 
 LIMIT 500