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GCC Code Coverage Report

Directory:	.		Exec	Total	Coverage
File:	src/theory/quantifiers/fmf/model_engine.cpp	Lines:	137	195	70.3 %
Date:	2021-08-03	Branches:	235	695	33.8 %


/******************************************************************************
 * Top contributors (to current version):
 *   Andrew Reynolds, Morgan Deters, Kshitij Bansal
 *
 * This file is part of the cvc5 project.
 *
 * Copyright (c) 2009-2021 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.
 * ****************************************************************************
 *
 * Implementation of model engine class.
 */

#include "theory/quantifiers/fmf/model_engine.h"

#include "options/quantifiers_options.h"
#include "theory/quantifiers/first_order_model.h"
#include "theory/quantifiers/fmf/full_model_check.h"
#include "theory/quantifiers/instantiate.h"
#include "theory/quantifiers/quant_rep_bound_ext.h"
#include "theory/quantifiers/quantifiers_attributes.h"
#include "theory/quantifiers/term_database.h"

using namespace cvc5::kind;
using namespace cvc5::context;

namespace cvc5 {
namespace theory {
namespace quantifiers {

//Model Engine constructor
ModelEngine::ModelEngine(QuantifiersState& qs,
                         QuantifiersInferenceManager& qim,
                         QuantifiersRegistry& qr,
                         TermRegistry& tr,
                         QModelBuilder* builder)
    : QuantifiersModule(qs, qim, qr, tr),
      d_incomplete_check(true),
      d_addedLemmas(0),
      d_triedLemmas(0),
      d_totalLemmas(0),
      d_builder(builder)
{

}

ModelEngine::~ModelEngine() {

}

bool ModelEngine::needsCheck( Theory::Effort e ) {
  return e==Theory::EFFORT_LAST_CALL;
}

QuantifiersModule::QEffort ModelEngine::needsModel(Theory::Effort e)
{
  if( options::mbqiInterleave() ){
    return QEFFORT_STANDARD;
  }else{
    return QEFFORT_MODEL;
  }
}

void ModelEngine::reset_round( Theory::Effort e ) {
  d_incomplete_check = true;
}
void ModelEngine::check(Theory::Effort e, QEffort quant_e)
{
  bool doCheck = false;
  if( options::mbqiInterleave() ){
    doCheck = quant_e == QEFFORT_STANDARD && d_qim.hasPendingLemma();
  }
  if( !doCheck ){
    doCheck = quant_e == QEFFORT_MODEL;
  }
  if( doCheck ){
    Assert(!d_qstate.isInConflict());
    int addedLemmas = 0;

    //the following will test that the model satisfies all asserted universal quantifiers by
    // (model-based) exhaustive instantiation.
    double clSet = 0;
    if( Trace.isOn("model-engine") ){
      Trace("model-engine") << "---Model Engine Round---" << std::endl;
      clSet = double(clock())/double(CLOCKS_PER_SEC);
    }
    Trace("model-engine-debug") << "Check model..." << std::endl;
    d_incomplete_check = false;
    // print debug
    if (Trace.isOn("fmf-model-complete"))
    {
      Trace("fmf-model-complete") << std::endl;
      debugPrint("fmf-model-complete");
    }
    // successfully built an acceptable model, now check it
    addedLemmas += checkModel();

    if( Trace.isOn("model-engine") ){
      double clSet2 = double(clock())/double(CLOCKS_PER_SEC);
      Trace("model-engine") << "Finished model engine, time = " << (clSet2-clSet) << std::endl;
    }

    if( addedLemmas==0 ){
      Trace("model-engine-debug")
          << "No lemmas added, incomplete = "
          << (d_incomplete_check || !d_incompleteQuants.empty()) << std::endl;
      // cvc5 will answer SAT or unknown
      if( Trace.isOn("fmf-consistent") ){
        Trace("fmf-consistent") << std::endl;
        debugPrint("fmf-consistent");
      }
    }
  }
}

bool ModelEngine::checkComplete(IncompleteId& incId)
{
  if (d_incomplete_check)
  {
    incId = IncompleteId::QUANTIFIERS_FMF;
    return false;
  }
  return true;
}

bool ModelEngine::checkCompleteFor( Node q ) {
  return d_incompleteQuants.find(q) == d_incompleteQuants.end();
}

void ModelEngine::registerQuantifier( Node f ){
  if( Trace.isOn("fmf-warn") ){
    bool canHandle = true;
    for( unsigned i=0; i<f[0].getNumChildren(); i++ ){
      TypeNode tn = f[0][i].getType();
      if( !tn.isSort() ){
        if (!d_qstate.isFiniteType(tn))
        {
          if( tn.isInteger() ){
            if( !options::fmfBound() ){
              canHandle = false;
            }
          }else{
            canHandle = false;
          }
        }
      }
    }
    if( !canHandle ){
      Trace("fmf-warn") << "Warning : Model Engine : may not be able to answer SAT because of formula : " << f << std::endl;
    }
  }
}

int ModelEngine::checkModel(){
  FirstOrderModel* fm = d_treg.getModel();

  //for debugging, setup
  for (std::map<TypeNode, std::vector<Node> >::iterator it =
           fm->getRepSetPtr()->d_type_reps.begin();
       it != fm->getRepSetPtr()->d_type_reps.end();
       ++it)
  {
    if( it->first.isSort() ){
      Trace("model-engine") << "Cardinality( " << it->first << " )" << " = " << it->second.size() << std::endl;
      Trace("model-engine-debug") << "        Reps : ";
      for( size_t i=0; i<it->second.size(); i++ ){
        Trace("model-engine-debug") << it->second[i] << "  ";
      }
      Trace("model-engine-debug") << std::endl;
      Trace("model-engine-debug") << "   Term reps : ";
      for( size_t i=0; i<it->second.size(); i++ ){
        Node r = fm->getInternalRepresentative(it->second[i], Node::null(), 0);
        if (r.isNull())
        {
          // there was an invalid equivalence class
          d_incomplete_check = true;
        }
        Trace("model-engine-debug") << r << " ";
      }
      Trace("model-engine-debug") << std::endl;
      Node mbt = fm->getModelBasisTerm(it->first);
      Trace("model-engine-debug") << "  Basis term : " << mbt << std::endl;
    }
  }

  d_triedLemmas = 0;
  d_addedLemmas = 0;
  d_totalLemmas = 0;
  //for statistics
  if( Trace.isOn("model-engine") ){
    for( unsigned i=0; i<fm->getNumAssertedQuantifiers(); i++ ){
      Node f = fm->getAssertedQuantifier( i );
      if (fm->isQuantifierActive(f) && shouldProcess(f))
      {
        int totalInst = 1;
        for( unsigned j=0; j<f[0].getNumChildren(); j++ ){
          TypeNode tn = f[0][j].getType();
          if (fm->getRepSet()->hasType(tn))
          {
            totalInst =
                totalInst * (int)fm->getRepSet()->getNumRepresentatives(tn);
          }
        }
        d_totalLemmas += totalInst;
      }
    }
  }

  Trace("model-engine-debug") << "Do exhaustive instantiation..." << std::endl;
  // FMC uses two sub-effort levels
  int e_max = options::mbqiMode() == options::MbqiMode::FMC
                  ? 2
                  : (options::mbqiMode() == options::MbqiMode::TRUST ? 0 : 1);
  for( int e=0; e<e_max; e++) {
    d_incompleteQuants.clear();
    for( unsigned i=0; i<fm->getNumAssertedQuantifiers(); i++ ){
      Node q = fm->getAssertedQuantifier( i, true );
      Trace("fmf-exh-inst") << "-> Exhaustive instantiate " << q << ", effort = " << e << "..." << std::endl;
      //determine if we should check this quantifier
      if (!fm->isQuantifierActive(q))
      {
        Trace("fmf-exh-inst") << "-> Inactive : " << q << std::endl;
        continue;
      }
      if (!shouldProcess(q))
      {
        Trace("fmf-exh-inst") << "-> Not processed : " << q << std::endl;
        d_incompleteQuants.insert(q);
        continue;
      }
      exhaustiveInstantiate(q, e);
      if (d_qstate.isInConflict())
      {
        break;
      }
    }
    if( d_addedLemmas>0 ){
      break;
    }else{
      Assert(!d_qstate.isInConflict());
    }
  }

  //print debug information
  if (d_qstate.isInConflict())
  {
    Trace("model-engine") << "Conflict, added lemmas = ";
  }else{
    Trace("model-engine") << "Added Lemmas = ";
  }
  Trace("model-engine") << d_addedLemmas << " / " << d_triedLemmas << " / ";
  Trace("model-engine") << d_totalLemmas << std::endl;
  return d_addedLemmas;
}



void ModelEngine::exhaustiveInstantiate( Node f, int effort ){
  //first check if the builder can do the exhaustive instantiation
  unsigned prev_alem = d_builder->getNumAddedLemmas();
  unsigned prev_tlem = d_builder->getNumTriedLemmas();
  FirstOrderModel* fm = d_treg.getModel();
  int retEi = d_builder->doExhaustiveInstantiation(fm, f, effort);
  if( retEi!=0 ){
    if( retEi<0 ){
      Trace("fmf-exh-inst") << "-> Builder determined complete instantiation was impossible." << std::endl;
      d_incompleteQuants.insert(f);
    }else{
      Trace("fmf-exh-inst") << "-> Builder determined instantiation(s)." << std::endl;
    }
    d_triedLemmas += d_builder->getNumTriedLemmas() - prev_tlem;
    d_addedLemmas += d_builder->getNumAddedLemmas() - prev_alem;
  }else{
    if( Trace.isOn("fmf-exh-inst-debug") ){
      Trace("fmf-exh-inst-debug") << "   Instantiation Constants: ";
      for( size_t i=0; i<f[0].getNumChildren(); i++ ){
        Trace("fmf-exh-inst-debug")
            << d_qreg.getInstantiationConstant(f, i) << " ";
      }
      Trace("fmf-exh-inst-debug") << std::endl;
    }
    QuantifiersBoundInference& qbi = d_qreg.getQuantifiersBoundInference();
    //create a rep set iterator and iterate over the (relevant) domain of the quantifier
    QRepBoundExt qrbe(qbi, fm);
    RepSetIterator riter(fm->getRepSet(), &qrbe);
    if( riter.setQuantifier( f ) ){
      Trace("fmf-exh-inst") << "...exhaustive instantiation set, incomplete=" << riter.isIncomplete() << "..." << std::endl;
      if( !riter.isIncomplete() ){
        int triedLemmas = 0;
        int addedLemmas = 0;
        Instantiate* inst = d_qim.getInstantiate();
        while( !riter.isFinished() && ( addedLemmas==0 || !options::fmfOneInstPerRound() ) ){
          //instantiation was not shown to be true, construct the match
          InstMatch m( f );
          for (unsigned i = 0; i < riter.getNumTerms(); i++)
          {
            m.set(d_qstate, i, riter.getCurrentTerm(i));
          }
          Debug("fmf-model-eval") << "* Add instantiation " << m << std::endl;
          triedLemmas++;
          //add as instantiation
          if (inst->addInstantiation(f,
                                     m.d_vals,
                                     InferenceId::QUANTIFIERS_INST_FMF_EXH,
                                     Node::null(),
                                     true))
          {
            addedLemmas++;
            if (d_qstate.isInConflict())
            {
              break;
            }
          }else{
            Debug("fmf-model-eval") << "* Failed Add instantiation " << m << std::endl;
          }
          riter.increment();
        }
        d_addedLemmas += addedLemmas;
        d_triedLemmas += triedLemmas;
      }
    }else{
      Trace("fmf-exh-inst") << "...exhaustive instantiation did set, incomplete=" << riter.isIncomplete() << "..." << std::endl;
    }
    //if the iterator is incomplete, we will return unknown instead of sat if no instantiations are added this round
    if( riter.isIncomplete() ){
      d_incompleteQuants.insert(f);
    }
  }
}

void ModelEngine::debugPrint( const char* c ){
  if (Trace.isOn(c))
  {
    Trace(c) << "Quantifiers: " << std::endl;
    FirstOrderModel* m = d_treg.getModel();
    for (size_t i = 0, nquant = m->getNumAssertedQuantifiers(); i < nquant; i++)
    {
      Node q = m->getAssertedQuantifier(i);
      if (d_qreg.hasOwnership(q, this))
      {
        Trace(c) << "   ";
        if (!m->isQuantifierActive(q))
        {
          Trace(c) << "*Inactive* ";
        }
        else
        {
          Trace(c) << "           ";
        }
        Trace(c) << q << std::endl;
      }
    }
  }
}

bool ModelEngine::shouldProcess(Node q)
{
  if (!d_qreg.hasOwnership(q, this))
  {
    return false;
  }
  // if finite model finding or fmf bound is on, we process everything
  if (options::finiteModelFind() || options::fmfBound())
  {
    return true;
  }
  // otherwise, we are only using model-based instantiation for internal
  // quantified formulas
  QuantAttributes& qattr = d_qreg.getQuantAttributes();
  return qattr.isInternal(q);
}

}  // namespace quantifiers
}  // namespace theory
}  // namespace cvc5


Generated by: GCOVR (Version 3.2)

Line	Exec	Source
1		/******************************************************************************
2		* Top contributors (to current version):
3		* Andrew Reynolds, Morgan Deters, Kshitij Bansal
4		*
5		* This file is part of the cvc5 project.
6		*
7		* Copyright (c) 2009-2021 by the authors listed in the file AUTHORS
8		* in the top-level source directory and their institutional affiliations.
9		* All rights reserved. See the file COPYING in the top-level source
10		* directory for licensing information.
11		* ****************************************************************************
12		*
13		* Implementation of model engine class.
14		*/
15
16		#include "theory/quantifiers/fmf/model_engine.h"
17
18		#include "options/quantifiers_options.h"
19		#include "theory/quantifiers/first_order_model.h"
20		#include "theory/quantifiers/fmf/full_model_check.h"
21		#include "theory/quantifiers/instantiate.h"
22		#include "theory/quantifiers/quant_rep_bound_ext.h"
23		#include "theory/quantifiers/quantifiers_attributes.h"
24		#include "theory/quantifiers/term_database.h"
25
26		using namespace cvc5::kind;
27		using namespace cvc5::context;
28
29		namespace cvc5 {
30		namespace theory {
31		namespace quantifiers {
32
33		//Model Engine constructor
34	1427	ModelEngine::ModelEngine(QuantifiersState& qs,
35		QuantifiersInferenceManager& qim,
36		QuantifiersRegistry& qr,
37		TermRegistry& tr,
38	1427	QModelBuilder* builder)
39		: QuantifiersModule(qs, qim, qr, tr),
40		d_incomplete_check(true),
41		d_addedLemmas(0),
42		d_triedLemmas(0),
43		d_totalLemmas(0),
44	1427	d_builder(builder)
45		{
46
47	1427	}
48
49	2854	ModelEngine::~ModelEngine() {
50
51	2854	}
52
53	23372	bool ModelEngine::needsCheck( Theory::Effort e ) {
54	23372	return e==Theory::EFFORT_LAST_CALL;
55		}
56
57	1737	QuantifiersModule::QEffort ModelEngine::needsModel(Theory::Effort e)
58		{
59	8658	if( options::mbqiInterleave() ){
60		return QEFFORT_STANDARD;
61		}else{
62	1737	return QEFFORT_MODEL;
63		}
64		}
65
66	12842	void ModelEngine::reset_round( Theory::Effort e ) {
67	12842	d_incomplete_check = true;
68	12842	}
69	5184	void ModelEngine::check(Theory::Effort e, QEffort quant_e)
70		{
71	5184	bool doCheck = false;
72	5184	if( options::mbqiInterleave() ){
73		doCheck = quant_e == QEFFORT_STANDARD && d_qim.hasPendingLemma();
74		}
75	5184	if( !doCheck ){
76	5184	doCheck = quant_e == QEFFORT_MODEL;
77		}
78	5184	if( doCheck ){
79	1635	Assert(!d_qstate.isInConflict());
80	1635	int addedLemmas = 0;
81
82		//the following will test that the model satisfies all asserted universal quantifiers by
83		// (model-based) exhaustive instantiation.
84	1635	double clSet = 0;
85	1635	if( Trace.isOn("model-engine") ){
86		Trace("model-engine") << "---Model Engine Round---" << std::endl;
87		clSet = double(clock())/double(CLOCKS_PER_SEC);
88		}
89	1635	Trace("model-engine-debug") << "Check model..." << std::endl;
90	1635	d_incomplete_check = false;
91		// print debug
92	1635	if (Trace.isOn("fmf-model-complete"))
93		{
94		Trace("fmf-model-complete") << std::endl;
95		debugPrint("fmf-model-complete");
96		}
97		// successfully built an acceptable model, now check it
98	1635	addedLemmas += checkModel();
99
100	1635	if( Trace.isOn("model-engine") ){
101		double clSet2 = double(clock())/double(CLOCKS_PER_SEC);
102		Trace("model-engine") << "Finished model engine, time = " << (clSet2-clSet) << std::endl;
103		}
104
105	1635	if( addedLemmas==0 ){
106	996	Trace("model-engine-debug")
107	498	<< "No lemmas added, incomplete = "
108	498	<< (d_incomplete_check \|\| !d_incompleteQuants.empty()) << std::endl;
109		// cvc5 will answer SAT or unknown
110	498	if( Trace.isOn("fmf-consistent") ){
111		Trace("fmf-consistent") << std::endl;
112		debugPrint("fmf-consistent");
113		}
114		}
115		}
116	5184	}
117
118	434	bool ModelEngine::checkComplete(IncompleteId& incId)
119		{
120	434	if (d_incomplete_check)
121		{
122		incId = IncompleteId::QUANTIFIERS_FMF;
123		return false;
124		}
125	434	return true;
126		}
127
128	1159	bool ModelEngine::checkCompleteFor( Node q ) {
129	1159	return d_incompleteQuants.find(q) == d_incompleteQuants.end();
130		}
131
132	3055	void ModelEngine::registerQuantifier( Node f ){
133	3055	if( Trace.isOn("fmf-warn") ){
134		bool canHandle = true;
135		for( unsigned i=0; i<f[0].getNumChildren(); i++ ){
136		TypeNode tn = f[0][i].getType();
137		if( !tn.isSort() ){
138		if (!d_qstate.isFiniteType(tn))
139		{
140		if( tn.isInteger() ){
141		if( !options::fmfBound() ){
142		canHandle = false;
143		}
144		}else{
145		canHandle = false;
146		}
147		}
148		}
149		}
150		if( !canHandle ){
151		Trace("fmf-warn") << "Warning : Model Engine : may not be able to answer SAT because of formula : " << f << std::endl;
152		}
153		}
154	3055	}
155
156	1635	int ModelEngine::checkModel(){
157	1635	FirstOrderModel* fm = d_treg.getModel();
158
159		//for debugging, setup
160	7637	for (std::map<TypeNode, std::vector<Node> >::iterator it =
161	1635	fm->getRepSetPtr()->d_type_reps.begin();
162	9272	it != fm->getRepSetPtr()->d_type_reps.end();
163		++it)
164		{
165	7637	if( it->first.isSort() ){
166	1912	Trace("model-engine") << "Cardinality( " << it->first << " )" << " = " << it->second.size() << std::endl;
167	1912	Trace("model-engine-debug") << " Reps : ";
168	5414	for( size_t i=0; i<it->second.size(); i++ ){
169	3502	Trace("model-engine-debug") << it->second[i] << " ";
170		}
171	1912	Trace("model-engine-debug") << std::endl;
172	1912	Trace("model-engine-debug") << " Term reps : ";
173	5414	for( size_t i=0; i<it->second.size(); i++ ){
174	7004	Node r = fm->getInternalRepresentative(it->second[i], Node::null(), 0);
175	3502	if (r.isNull())
176		{
177		// there was an invalid equivalence class
178		d_incomplete_check = true;
179		}
180	3502	Trace("model-engine-debug") << r << " ";
181		}
182	1912	Trace("model-engine-debug") << std::endl;
183	3824	Node mbt = fm->getModelBasisTerm(it->first);
184	1912	Trace("model-engine-debug") << " Basis term : " << mbt << std::endl;
185		}
186		}
187
188	1635	d_triedLemmas = 0;
189	1635	d_addedLemmas = 0;
190	1635	d_totalLemmas = 0;
191		//for statistics
192	1635	if( Trace.isOn("model-engine") ){
193		for( unsigned i=0; i<fm->getNumAssertedQuantifiers(); i++ ){
194		Node f = fm->getAssertedQuantifier( i );
195		if (fm->isQuantifierActive(f) && shouldProcess(f))
196		{
197		int totalInst = 1;
198		for( unsigned j=0; j<f[0].getNumChildren(); j++ ){
199		TypeNode tn = f[0][j].getType();
200		if (fm->getRepSet()->hasType(tn))
201		{
202		totalInst =
203		totalInst * (int)fm->getRepSet()->getNumRepresentatives(tn);
204		}
205		}
206		d_totalLemmas += totalInst;
207		}
208		}
209		}
210
211	1635	Trace("model-engine-debug") << "Do exhaustive instantiation..." << std::endl;
212		// FMC uses two sub-effort levels
213	1635	int e_max = options::mbqiMode() == options::MbqiMode::FMC
214	1984	? 2
215	1984	: (options::mbqiMode() == options::MbqiMode::TRUST ? 0 : 1);
216	2970	for( int e=0; e<e_max; e++) {
217	2472	d_incompleteQuants.clear();
218	14075	for( unsigned i=0; i<fm->getNumAssertedQuantifiers(); i++ ){
219	22782	Node q = fm->getAssertedQuantifier( i, true );
220	11603	Trace("fmf-exh-inst") << "-> Exhaustive instantiate " << q << ", effort = " << e << "..." << std::endl;
221		//determine if we should check this quantifier
222	11613	if (!fm->isQuantifierActive(q))
223		{
224	10	Trace("fmf-exh-inst") << "-> Inactive : " << q << std::endl;
225	10	continue;
226		}
227	12007	if (!shouldProcess(q))
228		{
229	414	Trace("fmf-exh-inst") << "-> Not processed : " << q << std::endl;
230	414	d_incompleteQuants.insert(q);
231	414	continue;
232		}
233	11179	exhaustiveInstantiate(q, e);
234	11179	if (d_qstate.isInConflict())
235		{
236		break;
237		}
238		}
239	2472	if( d_addedLemmas>0 ){
240	1137	break;
241		}else{
242	1335	Assert(!d_qstate.isInConflict());
243		}
244		}
245
246		//print debug information
247	1635	if (d_qstate.isInConflict())
248		{
249		Trace("model-engine") << "Conflict, added lemmas = ";
250		}else{
251	1635	Trace("model-engine") << "Added Lemmas = ";
252		}
253	1635	Trace("model-engine") << d_addedLemmas << " / " << d_triedLemmas << " / ";
254	1635	Trace("model-engine") << d_totalLemmas << std::endl;
255	1635	return d_addedLemmas;
256		}
257
258
259
260	11179	void ModelEngine::exhaustiveInstantiate( Node f, int effort ){
261		//first check if the builder can do the exhaustive instantiation
262	11179	unsigned prev_alem = d_builder->getNumAddedLemmas();
263	11179	unsigned prev_tlem = d_builder->getNumTriedLemmas();
264	11179	FirstOrderModel* fm = d_treg.getModel();
265	11179	int retEi = d_builder->doExhaustiveInstantiation(fm, f, effort);
266	11179	if( retEi!=0 ){
267	10955	if( retEi<0 ){
268		Trace("fmf-exh-inst") << "-> Builder determined complete instantiation was impossible." << std::endl;
269		d_incompleteQuants.insert(f);
270		}else{
271	10955	Trace("fmf-exh-inst") << "-> Builder determined instantiation(s)." << std::endl;
272		}
273	10955	d_triedLemmas += d_builder->getNumTriedLemmas() - prev_tlem;
274	10955	d_addedLemmas += d_builder->getNumAddedLemmas() - prev_alem;
275		}else{
276	224	if( Trace.isOn("fmf-exh-inst-debug") ){
277		Trace("fmf-exh-inst-debug") << " Instantiation Constants: ";
278		for( size_t i=0; i<f[0].getNumChildren(); i++ ){
279		Trace("fmf-exh-inst-debug")
280		<< d_qreg.getInstantiationConstant(f, i) << " ";
281		}
282		Trace("fmf-exh-inst-debug") << std::endl;
283		}
284	224	QuantifiersBoundInference& qbi = d_qreg.getQuantifiersBoundInference();
285		//create a rep set iterator and iterate over the (relevant) domain of the quantifier
286	448	QRepBoundExt qrbe(qbi, fm);
287	448	RepSetIterator riter(fm->getRepSet(), &qrbe);
288	224	if( riter.setQuantifier( f ) ){
289	224	Trace("fmf-exh-inst") << "...exhaustive instantiation set, incomplete=" << riter.isIncomplete() << "..." << std::endl;
290	224	if( !riter.isIncomplete() ){
291	210	int triedLemmas = 0;
292	210	int addedLemmas = 0;
293	210	Instantiate* inst = d_qim.getInstantiate();
294	1536	while( !riter.isFinished() && ( addedLemmas==0 \|\| !options::fmfOneInstPerRound() ) ){
295		//instantiation was not shown to be true, construct the match
296	1326	InstMatch m( f );
297	1983	for (unsigned i = 0; i < riter.getNumTerms(); i++)
298		{
299	1320	m.set(d_qstate, i, riter.getCurrentTerm(i));
300		}
301	663	Debug("fmf-model-eval") << "* Add instantiation " << m << std::endl;
302	663	triedLemmas++;
303		//add as instantiation
304	1326	if (inst->addInstantiation(f,
305		m.d_vals,
306		InferenceId::QUANTIFIERS_INST_FMF_EXH,
307	1326	Node::null(),
308		true))
309		{
310	317	addedLemmas++;
311	317	if (d_qstate.isInConflict())
312		{
313		break;
314		}
315		}else{
316	346	Debug("fmf-model-eval") << "* Failed Add instantiation " << m << std::endl;
317		}
318	663	riter.increment();
319		}
320	210	d_addedLemmas += addedLemmas;
321	210	d_triedLemmas += triedLemmas;
322		}
323		}else{
324		Trace("fmf-exh-inst") << "...exhaustive instantiation did set, incomplete=" << riter.isIncomplete() << "..." << std::endl;
325		}
326		//if the iterator is incomplete, we will return unknown instead of sat if no instantiations are added this round
327	224	if( riter.isIncomplete() ){
328	22	d_incompleteQuants.insert(f);
329		}
330		}
331	11179	}
332
333		void ModelEngine::debugPrint( const char* c ){
334		if (Trace.isOn(c))
335		{
336		Trace(c) << "Quantifiers: " << std::endl;
337		FirstOrderModel* m = d_treg.getModel();
338		for (size_t i = 0, nquant = m->getNumAssertedQuantifiers(); i < nquant; i++)
339		{
340		Node q = m->getAssertedQuantifier(i);
341		if (d_qreg.hasOwnership(q, this))
342		{
343		Trace(c) << " ";
344		if (!m->isQuantifierActive(q))
345		{
346		Trace(c) << "Inactive ";
347		}
348		else
349		{
350		Trace(c) << " ";
351		}
352		Trace(c) << q << std::endl;
353		}
354		}
355		}
356		}
357
358	11593	bool ModelEngine::shouldProcess(Node q)
359		{
360	11593	if (!d_qreg.hasOwnership(q, this))
361		{
362	404	return false;
363		}
364		// if finite model finding or fmf bound is on, we process everything
365	11189	if (options::finiteModelFind() \|\| options::fmfBound())
366		{
367	9586	return true;
368		}
369		// otherwise, we are only using model-based instantiation for internal
370		// quantified formulas
371	1603	QuantAttributes& qattr = d_qreg.getQuantAttributes();
372	1603	return qattr.isInternal(q);
373		}
374
375		} // namespace quantifiers
376		} // namespace theory
377	36207	} // namespace cvc5