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/********************* */
/*! \file engine_output_channel.cpp
** \verbatim
** Top contributors (to current version):
** Andrew Reynolds, Guy Katz, Tim King
** This file is part of the CVC4 project.
** Copyright (c) 2009-2020 by the authors listed in the file AUTHORS
** in the top-level source directory) and their institutional affiliations.
** All rights reserved. See the file COPYING in the top-level source
** directory for licensing information.\endverbatim
**
** \brief The theory engine output channel.
**/
#include "theory/engine_output_channel.h"
#include "prop/prop_engine.h"
#include "smt/smt_statistics_registry.h"
#include "theory/theory_engine.h"
using namespace CVC4::kind;
namespace CVC4 {
namespace theory {
EngineOutputChannel::Statistics::Statistics(theory::TheoryId theory)
: conflicts(getStatsPrefix(theory) + "::conflicts", 0),
propagations(getStatsPrefix(theory) + "::propagations", 0),
lemmas(getStatsPrefix(theory) + "::lemmas", 0),
requirePhase(getStatsPrefix(theory) + "::requirePhase", 0),
restartDemands(getStatsPrefix(theory) + "::restartDemands", 0),
trustedConflicts(getStatsPrefix(theory) + "::trustedConflicts", 0),
trustedLemmas(getStatsPrefix(theory) + "::trustedLemmas", 0)
{
smtStatisticsRegistry()->registerStat(&conflicts);
smtStatisticsRegistry()->registerStat(&propagations);
smtStatisticsRegistry()->registerStat(&lemmas);
smtStatisticsRegistry()->registerStat(&requirePhase);
smtStatisticsRegistry()->registerStat(&restartDemands);
smtStatisticsRegistry()->registerStat(&trustedConflicts);
smtStatisticsRegistry()->registerStat(&trustedLemmas);
}
EngineOutputChannel::Statistics::~Statistics()
{
smtStatisticsRegistry()->unregisterStat(&conflicts);
smtStatisticsRegistry()->unregisterStat(&propagations);
smtStatisticsRegistry()->unregisterStat(&lemmas);
smtStatisticsRegistry()->unregisterStat(&requirePhase);
smtStatisticsRegistry()->unregisterStat(&restartDemands);
smtStatisticsRegistry()->unregisterStat(&trustedConflicts);
smtStatisticsRegistry()->unregisterStat(&trustedLemmas);
}
EngineOutputChannel::EngineOutputChannel(TheoryEngine* engine,
theory::TheoryId theory)
: d_engine(engine), d_statistics(theory), d_theory(theory)
{
}
void EngineOutputChannel::safePoint(ResourceManager::Resource r)
{
spendResource(r);
if (d_engine->d_interrupted)
{
throw theory::Interrupted();
}
}
theory::LemmaStatus EngineOutputChannel::lemma(TNode lemma, LemmaProperty p)
{
Debug("theory::lemma") << "EngineOutputChannel<" << d_theory << ">::lemma("
<< lemma << ")"
<< ", properties = " << p << std::endl;
++d_statistics.lemmas;
d_engine->d_outputChannelUsed = true;
TrustNode tlem = TrustNode::mkTrustLemma(lemma);
theory::LemmaStatus result = d_engine->lemma(
tlem,
p,
isLemmaPropertySendAtoms(p) ? d_theory : theory::THEORY_LAST,
d_theory);
return result;
}
theory::LemmaStatus EngineOutputChannel::splitLemma(TNode lemma, bool removable)
{
Debug("theory::lemma") << "EngineOutputChannel<" << d_theory << ">::lemma("
<< lemma << ")" << std::endl;
++d_statistics.lemmas;
d_engine->d_outputChannelUsed = true;
Debug("pf::explain") << "EngineOutputChannel::splitLemma( " << lemma << " )"
<< std::endl;
TrustNode tlem = TrustNode::mkTrustLemma(lemma);
LemmaProperty p = removable ? LemmaProperty::REMOVABLE : LemmaProperty::NONE;
theory::LemmaStatus result = d_engine->lemma(tlem, p, d_theory);
return result;
}
bool EngineOutputChannel::propagate(TNode literal)
{
Debug("theory::propagate") << "EngineOutputChannel<" << d_theory
<< ">::propagate(" << literal << ")" << std::endl;
++d_statistics.propagations;
d_engine->d_outputChannelUsed = true;
return d_engine->propagate(literal, d_theory);
}
void EngineOutputChannel::conflict(TNode conflictNode)
{
Trace("theory::conflict")
<< "EngineOutputChannel<" << d_theory << ">::conflict(" << conflictNode
<< ")" << std::endl;
++d_statistics.conflicts;
d_engine->d_outputChannelUsed = true;
TrustNode tConf = TrustNode::mkTrustConflict(conflictNode);
d_engine->conflict(tConf, d_theory);
}
void EngineOutputChannel::demandRestart()
{
NodeManager* curr = NodeManager::currentNM();
Node restartVar = curr->mkSkolem(
"restartVar",
curr->booleanType(),
"A boolean variable asserted to be true to force a restart");
Trace("theory::restart") << "EngineOutputChannel<" << d_theory
<< ">::restart(" << restartVar << ")" << std::endl;
++d_statistics.restartDemands;
lemma(restartVar, LemmaProperty::REMOVABLE);
}
void EngineOutputChannel::requirePhase(TNode n, bool phase)
{
Debug("theory") << "EngineOutputChannel::requirePhase(" << n << ", " << phase
<< ")" << std::endl;
++d_statistics.requirePhase;
d_engine->getPropEngine()->requirePhase(n, phase);
}
void EngineOutputChannel::setIncomplete()
{
Trace("theory") << "setIncomplete()" << std::endl;
d_engine->setIncomplete(d_theory);
}
void EngineOutputChannel::spendResource(ResourceManager::Resource r)
{
d_engine->spendResource(r);
}
void EngineOutputChannel::handleUserAttribute(const char* attr,
theory::Theory* t)
{
d_engine->handleUserAttribute(attr, t);
}
void EngineOutputChannel::trustedConflict(TrustNode pconf)
{
Assert(pconf.getKind() == TrustNodeKind::CONFLICT);
Trace("theory::conflict")
<< "EngineOutputChannel<" << d_theory << ">::trustedConflict("
<< pconf.getNode() << ")" << std::endl;
if (pconf.getGenerator() != nullptr)
{
++d_statistics.trustedConflicts;
}
++d_statistics.conflicts;
d_engine->d_outputChannelUsed = true;
d_engine->conflict(pconf, d_theory);
}
LemmaStatus EngineOutputChannel::trustedLemma(TrustNode plem, LemmaProperty p)
{
Debug("theory::lemma") << "EngineOutputChannel<" << d_theory
<< ">::trustedLemma(" << plem << ")" << std::endl;
Assert(plem.getKind() == TrustNodeKind::LEMMA);
if (plem.getGenerator() != nullptr)
{
++d_statistics.trustedLemmas;
}
++d_statistics.lemmas;
d_engine->d_outputChannelUsed = true;
// now, call the normal interface for lemma
return d_engine->lemma(
plem,
p,
isLemmaPropertySendAtoms(p) ? d_theory : theory::THEORY_LAST,
d_theory);
}
} // namespace theory
} // namespace CVC4
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