<?xml version="1.0"?>
<!DOCTYPE nta PUBLIC "-//Uppaal Team//DTD Flat System 1.0//EN" "http://www.docs.uu.se/docs/rtmv/uppaal/xml/flat-1_0.dtd">
<nta><declaration>int id;</declaration><template><name x="32" y="-16">P</name><parameter x="144" y="-16"> const pid</parameter><declaration>clock x;
const k 2;</declaration><location id="id0" x="64" y="48"><name x="64" y="16">a</name></location><location id="id1" x="216" y="48"><name x="216" y="16">b</name><label kind="invariant" x="240" y="32">x&lt;=k</label></location><location id="id2" x="216" y="176"><name x="216" y="192">c</name></location><location id="id3" x="64" y="176"><name x="56" y="192">cs</name></location><init ref="id0"/><transition><source ref="id0"/><target ref="id1"/><label kind="guard" x="88" y="24">id== 0</label><label kind="assignment" x="160" y="24">x:= 0</label></transition><transition><source ref="id1"/><target ref="id2"/><label kind="guard" x="168" y="72">x&lt;=k</label><label kind="assignment" x="168" y="104">x:= 0,
id:= pid</label></transition><transition><source ref="id2"/><target ref="id1"/><label kind="guard" x="264" y="144">id== 0</label><label kind="assignment" x="264" y="64">x:= 0</label><nail x="251" y="146"/><nail x="251" y="82"/></transition><transition><source ref="id2"/><target ref="id3"/><label kind="guard" x="104" y="176">x>k, id==pid</label></transition><transition><source ref="id3"/><target ref="id0"/><label kind="assignment" x="16" y="80">x:= 0,
id:= 0</label></transition></template><instantiation>P1 := P( 1 );
P2 := P( 2 );
P3 := P( 3 );
P4 := P( 4 );</instantiation><system>system P1, P2, P3, P4;</system></nta>
