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Copy pathmicro preempt interrupt.xml
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380 lines (370 loc) · 12.6 KB
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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE nta PUBLIC '-//Uppaal Team//DTD Flat System 1.6//EN' 'http://www.it.uu.se/research/group/darts/uppaal/flat-1_6.dtd'>
<nta>
<declaration>// Place global declarations here.
int period_time, interr_period_time;
bool interrupt_pending = false;
bool context_saved = false; // Track if context has been saved
// Time unit (how often to increment discrete_time)
const int TIME_UNIT = 1;
const int TASK_PERIOD = 15;
const int TASK_WORK = 5;
int task_progress;
const int INTERR_PERIOD_MIN = 8;
const int INTERR_PERIOD_MAX = 11;
const int INTERR_WORK = 2;
const int CONTEXT_SR = 1;
// Synchronization channel
broadcast chan tick;
broadcast chan isr_complete;
broadcast chan interrupt_signal;</declaration>
<template>
<name>MainTask</name>
<declaration>clock x;</declaration>
<location id="id0" x="-688" y="-212">
<name x="-698" y="-246">Idle</name>
<committed/>
</location>
<location id="id1" x="-357" y="-212">
<name x="-367" y="-246">Executing</name>
<label kind="invariant" x="-408" y="-246">x<=1</label>
</location>
<location id="id2" x="-68" y="-212">
<name x="-78" y="-246">Preempted</name>
</location>
<location id="id3" x="-748" y="-85">
<name x="-758" y="-119">Waiting4i</name>
</location>
<location id="id4" x="-144" y="-408">
<name x="-154" y="-442">Error</name>
</location>
<location id="id5" x="-739" y="-314">
<name x="-807" y="-348">Waiting4p</name>
<label kind="invariant" x="-799" y="-323">x<=1</label>
</location>
<location id="id6" x="-408" y="-382">
<committed/>
</location>
<location id="id7" x="-850" y="-459">
</location>
<location id="id8" x="-688" y="-459">
<committed/>
</location>
<init ref="id0"/>
<transition id="id9">
<source ref="id8"/>
<target ref="id0"/>
<label kind="guard" x="-670" y="-484">period_time>=TASK_PERIOD</label>
<nail x="-518" y="-442"/>
</transition>
<transition id="id10">
<source ref="id8"/>
<target ref="id5"/>
<label kind="guard" x="-833" y="-433">period_time<TASK_PERIOD</label>
<label kind="assignment" x="-739" y="-357">x=0</label>
</transition>
<transition id="id11">
<source ref="id7"/>
<target ref="id8"/>
<label kind="synchronisation" x="-832" y="-476">isr_complete?</label>
</transition>
<transition id="id12">
<source ref="id5"/>
<target ref="id7"/>
<label kind="synchronisation" x="-969" y="-357">interrupt_signal?</label>
<nail x="-969" y="-408"/>
</transition>
<transition id="id13">
<source ref="id5"/>
<target ref="id5"/>
<label kind="guard" x="-1096" y="-297">x>=1 && period_time<TASK_PERIOD</label>
<label kind="assignment" x="-840" y="-263">x=0</label>
<nail x="-858" y="-212"/>
<nail x="-918" y="-297"/>
</transition>
<transition id="id14">
<source ref="id5"/>
<target ref="id0"/>
<label kind="guard" x="-790" y="-280">x>=1 && period_time>=TASK_PERIOD</label>
</transition>
<transition id="id15">
<source ref="id6"/>
<target ref="id1"/>
<label kind="guard" x="-416" y="-365">task_progress<TASK_WORK</label>
<label kind="assignment" x="-357" y="-263">x=0</label>
<nail x="-331" y="-314"/>
</transition>
<transition id="id16">
<source ref="id6"/>
<target ref="id0"/>
<label kind="guard" x="-697" y="-314">task_progress>=TASK_WORK && period_time==TASK_PERIOD</label>
</transition>
<transition id="id17">
<source ref="id6"/>
<target ref="id5"/>
<label kind="guard" x="-875" y="-374">task_progress>=TASK_WORK && period_time<TASK_PERIOD</label>
<label kind="assignment" x="-697" y="-348">x=0</label>
</transition>
<transition id="id18">
<source ref="id1"/>
<target ref="id4"/>
<label kind="guard" x="-204" y="-391">period_time>TASK_PERIOD</label>
</transition>
<transition id="id19">
<source ref="id6"/>
<target ref="id4"/>
<label kind="guard" x="-357" y="-433">period_time>TASK_PERIOD</label>
</transition>
<transition id="id20">
<source ref="id3"/>
<target ref="id0"/>
<label kind="synchronisation" x="-705" y="-144">isr_complete?</label>
<nail x="-629" y="-127"/>
</transition>
<transition id="id21">
<source ref="id0"/>
<target ref="id3"/>
<label kind="synchronisation" x="-858" y="-187">interrupt_signal?</label>
<nail x="-773" y="-153"/>
</transition>
<transition id="id22">
<source ref="id1"/>
<target ref="id6"/>
<label kind="guard" x="-451" y="-255">x>=1</label>
<label kind="assignment" x="-476" y="-280">task_progress++</label>
<nail x="-459" y="-306"/>
</transition>
<transition id="id23">
<source ref="id2"/>
<target ref="id1"/>
<label kind="synchronisation" x="-288" y="-102">isr_complete?</label>
<label kind="assignment" x="-288" y="-85">x=0</label>
<nail x="-93" y="-85"/>
<nail x="-306" y="-85"/>
</transition>
<transition id="id24">
<source ref="id1"/>
<target ref="id2"/>
<label kind="synchronisation" x="-339" y="-229">interrupt_signal?</label>
</transition>
<transition id="id25">
<source ref="id0"/>
<target ref="id1"/>
<label kind="assignment" x="-688" y="-195">x=0, task_progress=0, period_time = period_time%TASK_PERIOD</label>
</transition>
</template>
<template>
<name>ISR</name>
<declaration>clock x;</declaration>
<location id="id26" x="-510" y="-110">
<name x="-520" y="-144">Idle</name>
</location>
<location id="id27" x="-255" y="-110">
<name x="-306" y="-161">SaveContext</name>
<label kind="invariant" x="-272" y="-93">x<=CONTEXT_SR</label>
</location>
<location id="id28" x="-51" y="-110">
<name x="-61" y="-144">Executing</name>
<label kind="invariant" x="-110" y="-93">x<=INTERR_WORK</label>
</location>
<location id="id29" x="136" y="-119">
<name x="126" y="-153">RestoreContext</name>
<label kind="invariant" x="126" y="-102">x<=CONTEXT_SR</label>
</location>
<init ref="id26"/>
<transition id="id30">
<source ref="id29"/>
<target ref="id26"/>
<label kind="guard" x="68" y="-51">x>=CONTEXT_SR</label>
<label kind="synchronisation" x="-407" y="51">isr_complete!</label>
<nail x="85" y="68"/>
<nail x="-425" y="68"/>
</transition>
<transition id="id31">
<source ref="id28"/>
<target ref="id29"/>
<label kind="guard" x="-17" y="-161">x>=INTERR_WORK</label>
<label kind="assignment" x="-33" y="-114">x=0</label>
</transition>
<transition id="id32">
<source ref="id27"/>
<target ref="id28"/>
<label kind="guard" x="-229" y="-136">x>=CONTEXT_SR</label>
<label kind="assignment" x="-246" y="-110">context_saved=true, x=0</label>
</transition>
<transition id="id33">
<source ref="id26"/>
<target ref="id27"/>
<label kind="synchronisation" x="-459" y="-136">interrupt_signal?</label>
<label kind="assignment" x="-476" y="-102">context_saved=false, x=0</label>
</transition>
</template>
<template>
<name>InterruptController</name>
<declaration>clock x;</declaration>
<location id="id34" x="-722" y="-204">
<name x="-732" y="-238">Waiting</name>
<label kind="invariant" x="-773" y="-187">x<=1</label>
</location>
<location id="id35" x="-425" y="-212">
<name x="-435" y="-246">Triggered</name>
</location>
<init ref="id34"/>
<transition id="id36">
<source ref="id34"/>
<target ref="id34"/>
<label kind="guard" x="-977" y="-323">x>=1 && interr_period_time<INTERR_PERIOD_MAX</label>
<label kind="assignment" x="-840" y="-233">x=0</label>
<nail x="-773" y="-221"/>
<nail x="-858" y="-246"/>
<nail x="-790" y="-348"/>
</transition>
<transition id="id37">
<source ref="id35"/>
<target ref="id34"/>
<label kind="synchronisation" x="-670" y="-102">isr_complete?</label>
<label kind="assignment" x="-670" y="-85">interrupt_pending=false, x=0</label>
<nail x="-459" y="-85"/>
<nail x="-688" y="-85"/>
</transition>
<transition id="id38">
<source ref="id34"/>
<target ref="id35"/>
<label kind="guard" x="-688" y="-272">x>=1 && interr_period_time>=INTERR_PERIOD_MIN</label>
<label kind="synchronisation" x="-704" y="-225">interrupt_signal!</label>
<label kind="assignment" x="-704" y="-208">interr_period_time=0, interrupt_pending=true</label>
</transition>
</template>
<template>
<name x="5" y="5">TimeCounter</name>
<declaration>// Place local declarations here.
clock x;</declaration>
<location id="id39" x="-425" y="-51">
<name x="-435" y="-85">Counting</name>
<label kind="invariant" x="-435" y="-34">x <= TIME_UNIT</label>
</location>
<init ref="id39"/>
<transition id="id40">
<source ref="id39"/>
<target ref="id39"/>
<label kind="guard" x="-340" y="-85">x>= TIME_UNIT</label>
<label kind="synchronisation" x="-407" y="-68">tick!</label>
<label kind="assignment" x="-374" y="-51">period_time++, interr_period_time++, x = 0</label>
<nail x="-306" y="-51"/>
<nail x="-306" y="-161"/>
<nail x="-357" y="-161"/>
</transition>
</template>
<system>// Place template instantiations here.
// List one or more processes to be composed into a system.
system TimeCounter < InterruptController, ISR, MainTask;
</system>
<queries>
<option key="--diagnostic" value="1"/>
<query>
<formula/>
<comment>**** Safety properties</comment>
</query>
<query>
<formula>A[] not (MainTask.Executing && ISR.Executing)</formula>
<comment/>
<result outcome="success" type="quality" timestamp="2025-07-08 02:07:50 +0200">
<option key="--diagnostic" value="1"/>
</result>
</query>
<query>
<formula>A[] (interrupt_pending imply ((ISR.SaveContext || ISR.Executing || ISR.RestoreContext) && InterruptController.Triggered))</formula>
<comment/>
<result outcome="success" type="quality" timestamp="2025-07-08 02:11:50 +0200">
<option key="--diagnostic" value="1"/>
</result>
</query>
<query>
<formula>A[] (ISR.RestoreContext imply context_saved)</formula>
<comment>// S3: Context must be saved before restore (using tracking variable</comment>
<result outcome="success" type="quality" timestamp="2025-07-08 02:10:07 +0200">
<option key="--diagnostic" value="1"/>
</result>
</query>
<query>
<formula/>
<comment>**** Liveness properties</comment>
</query>
<query>
<formula>A<> (MainTask.Idle && task_progress == TASK_WORK)</formula>
<comment/>
<result outcome="success" type="quality" timestamp="2025-07-08 02:06:59 +0200">
<option key="--diagnostic" value="1"/>
</result>
</query>
<query>
<formula>interrupt_pending --> not interrupt_pending</formula>
<comment/>
<result outcome="success" type="quality" timestamp="2025-07-08 02:06:41 +0200">
<option key="--diagnostic" value="1"/>
</result>
</query>
<query>
<formula>ISR.Executing --> ISR.Idle</formula>
<comment/>
<result outcome="success" type="quality" timestamp="2025-07-08 02:07:21 +0200">
<option key="--diagnostic" value="1"/>
</result>
</query>
<query>
<formula/>
<comment>**** Timing properties</comment>
</query>
<query>
<formula>A[] (MainTask.Executing imply period_time <= TASK_PERIOD)</formula>
<comment/>
<result outcome="success" type="quality" timestamp="2025-07-08 01:47:28 +0200">
<option key="--diagnostic" value="1"/>
</result>
</query>
<query>
<formula>interrupt_pending --> (ISR.Executing)</formula>
<comment/>
<result outcome="success" type="quality" timestamp="2025-07-08 01:53:03 +0200">
<option key="--diagnostic" value="1"/>
</result>
</query>
<query>
<formula>interrupt_pending --> (ISR.Executing and interr_period_time==CONTEXT_SR)</formula>
<comment>Crashes...</comment>
</query>
<query>
<formula>A[] ISR.Executing imply (interr_period_time>=CONTEXT_SR and interr_period_time<=INTERR_WORK+CONTEXT_SR) </formula>
<comment>cRashes...</comment>
<result outcome="success" type="quality" timestamp="2025-07-08 02:01:25 +0200">
<option key="--diagnostic" value="1"/>
</result>
</query>
<query>
<formula/>
<comment>**** Functional properties</comment>
</query>
<query>
<formula>A[] not deadlock</formula>
<comment>Cannot handle models with priority...</comment>
</query>
<query>
<formula>A[] not MainTask.Error</formula>
<comment/>
<result outcome="success" type="quality" timestamp="2025-07-08 01:38:56 +0200">
<option key="--diagnostic" value="1"/>
</result>
</query>
<query>
<formula/>
<comment>**** Reachability Properties</comment>
</query>
<query>
<formula>E<> ISR.Executing</formula>
<comment/>
<result outcome="success" type="quality" timestamp="2025-07-08 01:38:19 +0200">
<option key="--diagnostic" value="1"/>
</result>
</query>
</queries>
</nta>