<?xml version="1.0" encoding="utf-8"?>
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<model xmlns="http://www.w3.org/2008/09/sml-if" schemaComplete="true">
  <identity>
    <name>InvalidDerivationWithAcyclicAttribute</name>
    <baseURI>
		http://interop.serviceml.org
	</baseURI>
    <description>A model is invalid if it has a reference type R1 
                 with sml:acyclic=᾿true᾿ and another reference type 
                 R2 derived from R1 such that sml:acyclic=᾿false᾿
    </description>    
  </identity>
  <definitions>
    <document>
      <data> 
        <xs:schema targetNamespace="urn:university"
                 elementFormDefault="qualified"
                 xmlns:tns="urn:university"
                 xmlns:xs="http://www.w3.org/2001/XMLSchema"
                 xmlns:sml="http://www.w3.org/2008/09/sml">

          <xs:complexType name="R1" sml:acyclic="true">
          	<xs:sequence>
				<xs:any namespace="##any" processContents="lax" minOccurs="0" maxOccurs="unbounded"/>
			</xs:sequence>         
          	<xs:anyAttribute namespace="##any" processContents="lax"/>
          </xs:complexType>

          <xs:complexType name="R2" sml:acyclic="false">
            <xs:complexContent>
              <xs:extension base="tns:R1"/>
            </xs:complexContent>
          </xs:complexType>
          
          <xs:element name="R2Element" type="tns:R2"/>
        </xs:schema>
      </data>
    </document>
  </definitions>
</model>