Examples with AgreeVar com.rockwellcollins.atc.agree.analysis.ast.AgreeVar used on opensource projects

Example 56 with AgreeVar

use of com.rockwellcollins.atc.agree.analysis.ast.AgreeVar in project AGREE by loonwerks.

the class AgreePatternTranslator method translatePatternCondition.

private Expr translatePatternCondition(AgreePeriodicPattern pattern, AgreeNodeBuilder builder, EObject varReference) {
    AgreeVar jitterVar = new AgreeVar(JITTER_PREFIX + patternIndex, NamedType.REAL, varReference);
    AgreeVar periodVar = new AgreeVar(PERIOD_PREFIX + patternIndex, NamedType.REAL, varReference);
    AgreeVar timeoutVar = new AgreeVar(TIMEOUT_PREFIX + patternIndex, NamedType.REAL, varReference);
    builder.addOutput(jitterVar);
    builder.addOutput(periodVar);
    builder.addOutput(timeoutVar);
    IdExpr jitterId = new IdExpr(jitterVar.id);
    IdExpr periodId = new IdExpr(periodVar.id);
    IdExpr timeoutId = new IdExpr(timeoutVar.id);
    builder.addEventTime(timeoutVar);
    // -j <= jitter <= j
    Expr jitterLow = new BinaryExpr(new UnaryExpr(UnaryOp.NEGATIVE, pattern.jitter), BinaryOp.LESSEQUAL, jitterId);
    Expr jitterHigh = new BinaryExpr(jitterId, BinaryOp.LESSEQUAL, pattern.jitter);
    builder.addAssertion(new AgreeStatement(null, new BinaryExpr(jitterLow, BinaryOp.AND, jitterHigh), pattern.reference));
    Expr expr = expr("(0.0 <= period) and (period < p) -> " + "(period = (pre period) + (if pre(e) then p else 0.0))", to("period", periodVar), to("p", pattern.period), to("e", pattern.event));
    builder.addAssertion(new AgreeStatement(null, expr, pattern.reference));
    // helper assertion (should be true)
    Expr lemma = expr("period - time < p - j and period >= time", to("period", periodVar), to("p", pattern.period), to("time", timeExpr), to("j", pattern.jitter));
    builder.addAssertion(new AgreeStatement(null, lemma, pattern.reference));
    AgreeVar timeofEvent = getTimeOf(pattern.event.id, builder, null);
    lemma = expr("(timeOfEvent >= 0.0 and timeOfEvent <> time => timeout - timeOfEvent >= p - j) and " + "(true -> (period <> pre(period) => period - pre(period) <= p + j)) and " + "(timeOfEvent >= 0.0 => timeout - timeOfEvent <= p + j)", to("timeOfEvent", timeofEvent), to("time", timeExpr), to("timeout", timeoutId), to("p", pattern.period), to("j", pattern.jitter), to("period", periodVar));
    builder.addPatternProp(new AgreeStatement("periodic lemma 1 for pattern " + patternIndex, lemma, pattern.reference));
    lemma = expr("true -> timeout <> pre(timeout) => timeout - pre(timeout) >= p - j", to("timeout", timeoutId), to("p", pattern.period), to("j", pattern.jitter));
    builder.addPatternProp(new AgreeStatement("periodic lemma 2 for pattern " + patternIndex, lemma, pattern.reference));
    // timeout = pnext + jitter
    Expr timeoutExpr = new BinaryExpr(periodId, BinaryOp.PLUS, jitterId);
    timeoutExpr = new BinaryExpr(timeoutId, BinaryOp.EQUAL, timeoutExpr);
    builder.addAssertion(new AgreeStatement(null, timeoutExpr, pattern.reference));
    // event = (t = timeout)
    Expr eventExpr = new BinaryExpr(timeExpr, BinaryOp.EQUAL, timeoutId);
    eventExpr = new BinaryExpr(pattern.event, BinaryOp.EQUAL, eventExpr);
    return eventExpr;
}

Example 57 with AgreeVar

use of com.rockwellcollins.atc.agree.analysis.ast.AgreeVar in project AGREE by loonwerks.

the class AgreePatternTranslator method translatePatternConditionProperty.

private Expr translatePatternConditionProperty(AgreeCauseEffectPattern pattern, AgreeNodeBuilder builder, IdExpr causeId, IdExpr effectId) {
    EObject varReference = pattern.reference;
    AgreeVar recordVar = new AgreeVar(RECORD_PREFIX + patternIndex, NamedType.BOOL, varReference);
    AgreeVar windowVar = new AgreeVar(WINDOW_PREFIX + patternIndex, NamedType.BOOL, varReference);
    builder.addInput(recordVar);
    builder.addLocal(windowVar);
    AgreeVar tRecord = getTimeOf(recordVar.id, builder, pattern);
    Expr expr = expr("record => cause", to("record", recordVar), to("cause", causeId));
    builder.addAssertion(new AgreeStatement(null, expr, varReference));
    BinaryOp left = getIntervalLeftOp(pattern.effectInterval);
    BinaryOp right = getIntervalRightOp(pattern.effectInterval);
    Equation eq = equation("in_window = (trecord <> -1.0) and " + "(l + trecord " + left + " time) and (time " + right + " h + trecord);", to("in_window", windowVar), to("trecord", tRecord), to("time", timeExpr), to("l", pattern.effectInterval.low), to("h", pattern.effectInterval.high));
    builder.addLocalEquation(new AgreeEquation(eq, varReference));
    return expr("in_window => effect", to("in_window", windowVar), to("effect", effectId));
}

Example 58 with AgreeVar

use of com.rockwellcollins.atc.agree.analysis.ast.AgreeVar in project AGREE by loonwerks.

the class AgreePatternTranslator method translatePatternEventProperty.

private Expr translatePatternEventProperty(AgreeCauseEffectPattern pattern, AgreeNodeBuilder builder, IdExpr causeId, IdExpr effectId) {
    EObject varReference = pattern.reference;
    AgreeVar timerVar = new AgreeVar(TIMER_PREFIX + patternIndex, NamedType.REAL, varReference);
    AgreeVar runVar = new AgreeVar(RUNNING_PREFIX + patternIndex, NamedType.BOOL, varReference);
    AgreeVar recordVar = new AgreeVar(RECORD_PREFIX + patternIndex, NamedType.BOOL, varReference);
    builder.addLocal(timerVar);
    builder.addLocal(runVar);
    builder.addInput(recordVar);
    IdExpr timerId = new IdExpr(timerVar.id);
    IdExpr runId = new IdExpr(runVar.id);
    IdExpr recordId = new IdExpr(recordVar.id);
    // run = record -> if pre(run) and e and l <= timer <= h then
    // false
    // else
    // if record then
    // true
    // else
    // pre(run)
    Expr preRun = new UnaryExpr(UnaryOp.PRE, runId);
    {
        Expr if2 = new IfThenElseExpr(recordId, new BoolExpr(true), preRun);
        BinaryOp left = getIntervalLeftOp(pattern.effectInterval);
        BinaryOp right = getIntervalRightOp(pattern.effectInterval);
        Expr timerLow = new BinaryExpr(pattern.effectInterval.low, left, timerId);
        Expr timerHigh = new BinaryExpr(timerId, right, pattern.effectInterval.high);
        Expr cond1 = new BinaryExpr(preRun, BinaryOp.AND, effectId);
        cond1 = new BinaryExpr(cond1, BinaryOp.AND, timerLow);
        cond1 = new BinaryExpr(cond1, BinaryOp.AND, timerHigh);
        Expr if1 = new IfThenElseExpr(cond1, new BoolExpr(false), if2);
        Expr runExpr = new BinaryExpr(recordId, BinaryOp.ARROW, if1);
        builder.addLocalEquation(new AgreeEquation(runId, runExpr, varReference));
    }
    // timer = (0 -> if pre(run) then pre(timer) + (t - pre(t)) else 0)
    {
        Expr preTimer = new UnaryExpr(UnaryOp.PRE, timerId);
        Expr preT = new UnaryExpr(UnaryOp.PRE, timeExpr);
        Expr elapsed = new BinaryExpr(timeExpr, BinaryOp.MINUS, preT);
        Expr total = new BinaryExpr(preTimer, BinaryOp.PLUS, elapsed);
        Expr timerExpr = new IfThenElseExpr(preRun, total, new RealExpr(BigDecimal.ZERO));
        timerExpr = new BinaryExpr(new RealExpr(BigDecimal.ZERO), BinaryOp.ARROW, timerExpr);
        builder.addLocalEquation(new AgreeEquation(timerId, timerExpr, varReference));
    }
    // property that should be true for timer to help induction
    {
        Expr expr = new BinaryExpr(timerId, BinaryOp.GREATEREQUAL, new RealExpr(BigDecimal.ZERO));
        builder.addAssertion(new AgreeStatement(null, expr, varReference));
    }
    // record => cause and not (e and (l = 0))
    {
        Expr causeExpr;
        if (pattern.effectInterval.type == IntervalType.OPEN_LEFT || pattern.effectInterval.type == IntervalType.OPEN) {
            causeExpr = causeId;
        } else {
            Expr eAndLZero = new BinaryExpr(pattern.effectInterval.low, BinaryOp.EQUAL, new RealExpr(BigDecimal.ZERO));
            eAndLZero = new BinaryExpr(effectId, BinaryOp.AND, eAndLZero);
            Expr notEAndLZero = new UnaryExpr(UnaryOp.NOT, eAndLZero);
            causeExpr = new BinaryExpr(causeId, BinaryOp.AND, notEAndLZero);
        }
        Expr recordExpr = new BinaryExpr(recordId, BinaryOp.IMPLIES, causeExpr);
        AgreeStatement statement = new AgreeStatement(null, recordExpr, varReference);
        builder.addAssertion(statement);
    }
    // lemma to help induction
    AgreeVar timeOfCause = getTimeOf(causeId.id, builder, pattern);
    AgreeVar timeOfEffect = getTimeOf(effectId.id, builder, pattern);
    // Expr expr = expr("(timer > 0.0 => timeOfCause > 0.0) and "
    // + "(timeOfEffect < timeOfCause => timer <= time - timeOfCause) and "
    // + "(cause => timeOfCause = time) and"
    // + "(true -> ((pre (timeOfEffect - low > timeOfCause)) => timer =
    // 0.0))",
    // to("timer", timerVar),
    // to("timeOfCause", timeOfCause),
    // to("time", timeExpr),
    // to("cause", causeId),
    // to("timeOfEffect", timeOfEffect),
    // to("low", pattern.effectInterval.low));
    Expr expr = expr("(timer > 0.0 => timeOfCause >= 0.0) and " + "(timer <= time) and" + "(timeOfEffect >= timeOfCause and timer <= high and timeOfEffect >= time - timer + low => not run) and" + "(true -> (pre(timeOfEffect >= timeOfCause + low and timeOfEffect <= timeOfCause + high and timer <= high) => timer = 0.0)) and" + "(timer = 0.0 or timer >= time - timeOfCause)", to("timer", timerVar), to("timeOfCause", timeOfCause), to("timeOfEffect", timeOfEffect), to("time", timeExpr), to("low", pattern.effectInterval.low), to("high", pattern.effectInterval.high), to("run", runVar));
    builder.addPatternProp(new AgreeStatement("Timer Lemma for Pattern " + patternIndex, expr, pattern));
    // timer <= h
    BinaryOp right = getIntervalRightOp(pattern.effectInterval);
    return new BinaryExpr(timerId, right, pattern.effectInterval.high);
}

Example 59 with AgreeVar

use of com.rockwellcollins.atc.agree.analysis.ast.AgreeVar in project AGREE by loonwerks.

the class AgreePatternTranslator method addPatternConstraintProperty.

private void addPatternConstraintProperty(AgreeCauseEffectPattern pattern, AgreeNodeBuilder builder, IdExpr causeId, IdExpr effectId) {
    AgreeVar newCause = new AgreeVar(NEW_CAUSE_PREFIX + causeId.id + patternIndex, NamedType.BOOL, pattern);
    builder.addLocal(newCause);
    AgreeVar timeCauseVar = getTimeOf(causeId.id, builder, pattern);
    IdExpr timeCauseId = new IdExpr(timeCauseVar.id);
    IdExpr newCauseId = new IdExpr(newCause.id);
    Expr preTimeCause = new UnaryExpr(UnaryOp.PRE, timeCauseId);
    Expr newCauseExpr = new BinaryExpr(preTimeCause, BinaryOp.NOTEQUAL, timeCauseId);
    newCauseExpr = new BinaryExpr(newCauseExpr, BinaryOp.AND, new BinaryExpr(preTimeCause, BinaryOp.GREATEREQUAL, new RealExpr(BigDecimal.ZERO)));
    builder.addLocalEquation(new AgreeEquation(newCauseId, newCauseExpr, pattern));
    if (pattern.effectType == TriggerType.EVENT) {
        AgreeVar timeEffectVar = getTimeOf(effectId.id, builder, pattern);
        IdExpr timeEffectId = new IdExpr(timeEffectVar.id);
        Expr preTimeCausePlusL = new BinaryExpr(preTimeCause, BinaryOp.PLUS, pattern.effectInterval.low);
        BinaryOp left = getIntervalLeftOp(pattern.effectInterval);
        Expr inInterval = new BinaryExpr(preTimeCausePlusL, left, timeEffectId);
        Expr propExpr = new BinaryExpr(newCauseId, BinaryOp.IMPLIES, inInterval);
        propExpr = new BinaryExpr(new BoolExpr(true), BinaryOp.ARROW, propExpr);
        AgreeStatement statement = new AgreeStatement(" pattern " + patternIndex + " in bounds", propExpr, pattern);
        builder.addPatternProp(statement);
    } else {
        AgreeVar timeEndVar = new AgreeVar(END_INTERVAL + patternIndex, NamedType.REAL, pattern);
        builder.addLocal(timeEndVar);
        Equation eq = equation("timeEnd = timeCause + h;", to("timeEnd", timeEndVar), to("timeCause", timeCauseId), to("h", pattern.effectInterval.high));
        builder.addLocalEquation(new AgreeEquation(eq, pattern));
        Expr expr = expr("true -> (newCause => pre(timeEnd) < time)", to("timeEnd", timeEndVar), to("newCause", newCauseId), to("time", timeExpr));
        AgreeStatement statement = new AgreeStatement(" pattern " + patternIndex + " in bounds", expr, pattern);
        builder.addPatternProp(statement);
    }
}

Example 60 with AgreeVar

use of com.rockwellcollins.atc.agree.analysis.ast.AgreeVar in project AGREE by loonwerks.

the class AgreePatternTranslator method translatePatternEffectEventConstraint.

private Expr translatePatternEffectEventConstraint(AgreeCauseEffectPattern pattern, AgreeNodeBuilder builder, IdExpr causeId, IdExpr effectId) {
    AgreeVar effectTimeRangeVar = new AgreeVar(EFFECT_TIME_RANGE_PREFIX + patternIndex, NamedType.REAL, pattern);
    builder.addInput(effectTimeRangeVar);
    IdExpr effectTimeRangeId = new IdExpr(effectTimeRangeVar.id);
    AgreeVar timeEffectVar = new AgreeVar(TIME_WILL_PREFIX + patternIndex, NamedType.REAL, pattern);
    builder.addOutput(timeEffectVar);
    IdExpr timeEffectId = new IdExpr(timeEffectVar.id);
    Expr effectTimeRangeConstraint = getTimeRangeConstraint(effectTimeRangeId, pattern.effectInterval);
    builder.addAssertion(new AgreeStatement(null, effectTimeRangeConstraint, pattern.reference));
    // make a constraint that triggers when the event WILL happen
    Expr expr = expr("timeEffect = if causeId then effectTimeRangeId else (-1.0 -> pre timeEffect)", to("timeEffect", timeEffectId), to("causeId", causeId), to("effectTimeRangeId", effectTimeRangeId));
    builder.addAssertion(new AgreeStatement(null, expr, pattern));
    // a lemma that may be helpful
    Expr lemma = expr("timeEffect <= time + intHigh", to("timeEffect", timeEffectVar), to("time", timeExpr), to("intHigh", pattern.effectInterval.high));
    builder.addAssertion(new AgreeStatement(null, lemma, pattern));
    lemma = expr("timeWill <= causeTime + high and (causeTime >= 0.0 => causeTime + low <= timeWill)", to("timeWill", timeEffectVar), to("causeTime", getTimeOf(causeId.id, builder, pattern)), to("high", pattern.effectInterval.high), to("low", pattern.effectInterval.low));
    builder.addAssertion(new AgreeStatement(null, lemma, pattern));
    lemma = expr("timeWill <= time => timeWill <= timeEffect", to("timeWill", timeEffectVar), to("timeEffect", getTimeOf(effectId.id, builder, pattern)));
    builder.addAssertion((new AgreeStatement(null, lemma, pattern)));
    // Expr lemmaExpr = expr("timeEffect <= effectTimeRangeId and timeEffect
    // >= -1.0",
    // to("timeEffect", timeEffectId),
    // to("effectTimeRangeId", effectTimeRangeId));
    // 
    // //add this assertion to help with proofs (it should always be true)
    // builder.addAssertion(new AgreeStatement(null, lemmaExpr, pattern));
    // register the event time
    builder.addEventTime(timeEffectVar);
    // make the equation that triggers the event at the correct ime
    Expr timeEqualsEffectTime = new BinaryExpr(timeExpr, BinaryOp.EQUAL, timeEffectId);
    // if the event is exclusive it only occurs when scheduled
    BinaryOp effectOp = pattern.effectIsExclusive ? BinaryOp.EQUAL : BinaryOp.IMPLIES;
    Expr impliesEffect = new BinaryExpr(timeEqualsEffectTime, effectOp, effectId);
    return impliesEffect;
}