UniTO/anno3/vpc/consegne/4/uppaallB2.xml

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE nta PUBLIC '-//Uppaal Team//DTD Flat System 1.1//EN' 'http://www.it.uu.se/research/group/darts/uppaal/flat-1_2.dtd'>
<nta>
	<declaration>clock time;

urgent chan ML;
urgent chan LM;
urgent chan LR;
urgent chan RL;</declaration>
	<template>
		<name>Receiver</name>
		<declaration>clock rc;</declaration>
		<location id="id0" x="-229" y="-144">
			<name x="-340" y="-170">wait</name>
		</location>
		<location id="id1" x="-229" y="17">
			<name x="-306" y="17">send_ack</name>
		</location>
		<location id="id2" x="-55" y="14">
			<name x="-38" y="-12">done_pkg</name>
			<label kind="invariant" x="-65" y="31">rc &lt;= 4</label>
		</location>
		<location id="id3" x="-55" y="-148">
			<name x="-65" y="-182">recv_pkg</name>
			<label kind="invariant" x="-25" y="-153">rc &lt;=4</label>
		</location>
		<init ref="id0"/>
		<transition>
			<source ref="id1"/>
			<target ref="id0"/>
			<label kind="synchronisation" x="-221" y="-85">RL!</label>
		</transition>
		<transition>
			<source ref="id0"/>
			<target ref="id3"/>
			<label kind="synchronisation" x="-170" y="-170">LR!</label>
			<label kind="assignment" x="-170" y="-144">rc := 0</label>
		</transition>
		<transition>
			<source ref="id2"/>
			<target ref="id1"/>
			<label kind="guard" x="-170" y="-8">rc &gt;= 2</label>
			<label kind="assignment" x="-170" y="17">rc := 0</label>
		</transition>
		<transition>
			<source ref="id3"/>
			<target ref="id2"/>
			<label kind="guard" x="-34" y="-102">rc &gt;= 2</label>
			<label kind="assignment" x="-34" y="-68">rc := 0</label>
		</transition>
	</template>
	<template>
		<name>Link</name>
		<declaration>clock lc;</declaration>
		<location id="id4" x="8" y="-178">
			<name x="-2" y="-212">loss</name>
		</location>
		<location id="id5" x="-178" y="-68">
			<name x="-188" y="-102">received_pkg</name>
			<label kind="invariant" x="-237" y="-94">lc &lt; 4</label>
		</location>
		<location id="id6" x="178" y="-76">
			<name x="212" y="-93">received_ack</name>
			<label kind="invariant" x="186" y="-68">lc &lt; 4</label>
		</location>
		<location id="id7" x="178" y="136">
			<name x="204" y="119">resend_ack</name>
		</location>
		<location id="id8" x="-178" y="127">
			<name x="-238" y="144">resend_pkg</name>
		</location>
		<location id="id9" x="0" y="25">
			<name x="-10" y="-9">idle</name>
		</location>
		<init ref="id9"/>
		<transition>
			<source ref="id6"/>
			<target ref="id4"/>
		</transition>
		<transition>
			<source ref="id4"/>
			<target ref="id9"/>
		</transition>
		<transition>
			<source ref="id5"/>
			<target ref="id4"/>
		</transition>
		<transition>
			<source ref="id6"/>
			<target ref="id7"/>
			<label kind="guard" x="212" y="153">lc &gt;= 2</label>
		</transition>
		<transition>
			<source ref="id9"/>
			<target ref="id6"/>
			<label kind="synchronisation" x="136" y="-127">RL?</label>
			<label kind="assignment" x="85" y="-102">lc := 0</label>
		</transition>
		<transition>
			<source ref="id7"/>
			<target ref="id9"/>
			<label kind="synchronisation" x="119" y="144">LM?</label>
		</transition>
		<transition>
			<source ref="id5"/>
			<target ref="id8"/>
			<label kind="guard" x="-255" y="-8">lc &gt;= 2</label>
		</transition>
		<transition>
			<source ref="id8"/>
			<target ref="id9"/>
			<label kind="synchronisation" x="-102" y="51">LR?</label>
		</transition>
		<transition>
			<source ref="id9"/>
			<target ref="id5"/>
			<label kind="synchronisation" x="-119" y="-25">ML?</label>
			<label kind="assignment" x="-110" y="-59">lc := 0</label>
			<nail x="-144" y="-59"/>
		</transition>
	</template>
	<template>
		<name x="5" y="5">Sender</name>
		<declaration>clock sc;
clock attesa;</declaration>
		<location id="id10" x="-578" y="-229">
			<name x="-663" y="-204">received_ack</name>
			<label kind="invariant" x="-655" y="-229">sc &lt;= 4</label>
		</location>
		<location id="id11" x="-408" y="-229">
			<name x="-391" y="-255">wait_ack</name>
		</location>
		<location id="id12" x="-408" y="-391">
			<name x="-418" y="-425">send_pkg</name>
		</location>
		<location id="id13" x="-578" y="-391">
			<name x="-629" y="-433">wait</name>
			<label kind="invariant" x="-654" y="-399">sc &lt;= 2</label>
		</location>
		<init ref="id13"/>
		<transition>
			<source ref="id10"/>
			<target ref="id13"/>
			<label kind="guard" x="-637" y="-331">sc &gt;= 2</label>
			<label kind="assignment" x="-629" y="-306">sc := 0</label>
		</transition>
		<transition>
			<source ref="id11"/>
			<target ref="id10"/>
			<label kind="synchronisation" x="-510" y="-221">LM!</label>
			<label kind="assignment" x="-510" y="-246">sc := 0</label>
		</transition>
		<transition>
			<source ref="id12"/>
			<target ref="id11"/>
			<label kind="synchronisation" x="-408" y="-327">ML!</label>
			<label kind="assignment" x="-399" y="-314">attesa := 0</label>
		</transition>
		<transition>
			<source ref="id13"/>
			<target ref="id12"/>
			<label kind="guard" x="-518" y="-408">sc &gt;= 1</label>
		</transition>
	</template>
	<system>sender = Sender();
receiver = Receiver();
link = Link();

system sender, receiver, link;</system>
	<queries>
		<query>
			<formula>E&lt;&gt; receiver.recv_pkg
			</formula>
			<comment>
			</comment>
		</query>
		<query>
			<formula>A&lt;&gt; receiver.recv_pkg
			</formula>
			<comment>
			</comment>
		</query>
		<query>
			<formula>sender.wait_ack --&gt; (sender.received_ack)
			</formula>
			<comment>
			</comment>
		</query>
		<query>
			<formula>A&lt;&gt; sender.received_ack
			</formula>
			<comment>
			</comment>
		</query>
		<query>
			<formula>A[] (not deadlock)
			</formula>
			<comment>
			</comment>
		</query>
	</queries>
</nta>