Head

GCC Code Coverage Report

Directory:	.		Exec	Total	Coverage
File:	src/theory/inference_manager_buffered.cpp	Lines:	81	87	93.1 %
Date:	2021-11-06	Branches:	55	152	36.2 %


/******************************************************************************
 * Top contributors (to current version):
 *   Andrew Reynolds, Gereon Kremer, Aina Niemetz
 *
 * 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.
 * ****************************************************************************
 *
 * A buffered inference manager.
 */

#include "theory/inference_manager_buffered.h"

#include "theory/rewriter.h"
#include "theory/theory.h"
#include "theory/theory_state.h"

using namespace cvc5::kind;

namespace cvc5 {
namespace theory {

InferenceManagerBuffered::InferenceManagerBuffered(Env& env,
                                                   Theory& t,
                                                   TheoryState& state,
                                                   const std::string& statsName,
                                                   bool cacheLemmas)
    : TheoryInferenceManager(env, t, state, statsName, cacheLemmas),
      d_processingPendingLemmas(false)
{
}

bool InferenceManagerBuffered::hasPending() const
{
  return hasPendingFact() || hasPendingLemma();
}

bool InferenceManagerBuffered::hasPendingFact() const
{
  return !d_pendingFact.empty();
}

bool InferenceManagerBuffered::hasPendingLemma() const
{
  return !d_pendingLem.empty();
}

bool InferenceManagerBuffered::addPendingLemma(Node lem,
                                               InferenceId id,
                                               LemmaProperty p,
                                               ProofGenerator* pg,
                                               bool checkCache)
{
  if (checkCache)
  {
    // check if it is unique up to rewriting
    Node lemr = rewrite(lem);
    if (hasCachedLemma(lemr, p))
    {
      return false;
    }
  }
  // make the simple theory lemma
  d_pendingLem.emplace_back(new SimpleTheoryLemma(id, lem, p, pg));
  return true;
}

void InferenceManagerBuffered::addPendingLemma(
    std::unique_ptr<TheoryInference> lemma)
{
  d_pendingLem.emplace_back(std::move(lemma));
}

void InferenceManagerBuffered::addPendingFact(Node conc,
                                              InferenceId id,
                                              Node exp,
                                              ProofGenerator* pg)
{
  // make a simple theory internal fact
  Assert(conc.getKind() != AND && conc.getKind() != OR);
  d_pendingFact.emplace_back(new SimpleTheoryInternalFact(id, conc, exp, pg));
}

void InferenceManagerBuffered::addPendingFact(
    std::unique_ptr<TheoryInference> fact)
{
  d_pendingFact.emplace_back(std::move(fact));
}

void InferenceManagerBuffered::addPendingPhaseRequirement(Node lit, bool pol)
{
  // it is the responsibility of the caller to ensure lit is rewritten
  d_pendingReqPhase[lit] = pol;
}

void InferenceManagerBuffered::doPendingFacts()
{
  size_t i = 0;
  while (!d_theoryState.isInConflict() && i < d_pendingFact.size())
  {
    // assert the internal fact, which notice may enqueue more pending facts in
    // this loop, or result in a conflict.
    assertInternalFactTheoryInference(d_pendingFact[i].get());
    i++;
  }
  d_pendingFact.clear();
}

void InferenceManagerBuffered::doPendingLemmas()
{
  if (d_processingPendingLemmas)
  {
    // already processing
    return;
  }
  d_processingPendingLemmas = true;
  size_t i = 0;
  while (i < d_pendingLem.size())
  {
    // process this lemma, which notice may enqueue more pending lemmas in this
    // loop, or clear the lemmas.
    lemmaTheoryInference(d_pendingLem[i].get());
    i++;
  }
  d_pendingLem.clear();
  d_processingPendingLemmas = false;
}

void InferenceManagerBuffered::doPendingPhaseRequirements()
{
  // process the pending require phase calls
  for (const std::pair<const Node, bool>& prp : d_pendingReqPhase)
  {
    requirePhase(prp.first, prp.second);
  }
  d_pendingReqPhase.clear();
}
void InferenceManagerBuffered::clearPending()
{
  d_pendingFact.clear();
  d_pendingLem.clear();
  d_pendingReqPhase.clear();
}
void InferenceManagerBuffered::clearPendingFacts() { d_pendingFact.clear(); }
void InferenceManagerBuffered::clearPendingLemmas() { d_pendingLem.clear(); }
void InferenceManagerBuffered::clearPendingPhaseRequirements()
{
  d_pendingReqPhase.clear();
}

std::size_t InferenceManagerBuffered::numPendingLemmas() const
{
  return d_pendingLem.size();
}
std::size_t InferenceManagerBuffered::numPendingFacts() const
{
  return d_pendingFact.size();
}

void InferenceManagerBuffered::lemmaTheoryInference(TheoryInference* lem)
{
  // process this lemma
  LemmaProperty p = LemmaProperty::NONE;
  TrustNode tlem = lem->processLemma(p);
  Assert(!tlem.isNull());
  // send the lemma
  trustedLemma(tlem, lem->getId(), p);
}

void InferenceManagerBuffered::assertInternalFactTheoryInference(
    TheoryInference* fact)
{
  // process this fact
  std::vector<Node> exp;
  ProofGenerator* pg = nullptr;
  Node lit = fact->processFact(exp, pg);
  Assert(!lit.isNull());
  bool pol = lit.getKind() != NOT;
  TNode atom = pol ? lit : lit[0];
  // no double negation or conjunctive conclusions
  Assert(atom.getKind() != NOT && atom.getKind() != AND);
  // assert the internal fact
  assertInternalFact(atom, pol, fact->getId(), exp, pg);
}

void InferenceManagerBuffered::notifyInConflict()
{
  d_theoryState.notifyInConflict();
  // also clear the pending facts, which will be stale after backtracking
  clearPending();
}

}  // namespace theory
}  // namespace cvc5


Generated by: GCOVR (Version 3.2)

Line	Exec	Source
1		/******************************************************************************
2		* Top contributors (to current version):
3		* Andrew Reynolds, Gereon Kremer, Aina Niemetz
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		* A buffered inference manager.
14		*/
15
16		#include "theory/inference_manager_buffered.h"
17
18		#include "theory/rewriter.h"
19		#include "theory/theory.h"
20		#include "theory/theory_state.h"
21
22		using namespace cvc5::kind;
23
24		namespace cvc5 {
25		namespace theory {
26
27	106904	InferenceManagerBuffered::InferenceManagerBuffered(Env& env,
28		Theory& t,
29		TheoryState& state,
30		const std::string& statsName,
31	106904	bool cacheLemmas)
32		: TheoryInferenceManager(env, t, state, statsName, cacheLemmas),
33	106904	d_processingPendingLemmas(false)
34		{
35	106904	}
36
37	4297224	bool InferenceManagerBuffered::hasPending() const
38		{
39	4297224	return hasPendingFact() \|\| hasPendingLemma();
40		}
41
42	5201504	bool InferenceManagerBuffered::hasPendingFact() const
43		{
44	5201504	return !d_pendingFact.empty();
45		}
46
47	5327672	bool InferenceManagerBuffered::hasPendingLemma() const
48		{
49	5327672	return !d_pendingLem.empty();
50		}
51
52	160300	bool InferenceManagerBuffered::addPendingLemma(Node lem,
53		InferenceId id,
54		LemmaProperty p,
55		ProofGenerator* pg,
56		bool checkCache)
57		{
58	160300	if (checkCache)
59		{
60		// check if it is unique up to rewriting
61	264305	Node lemr = rewrite(lem);
62	160300	if (hasCachedLemma(lemr, p))
63		{
64	56295	return false;
65		}
66		}
67		// make the simple theory lemma
68	104005	d_pendingLem.emplace_back(new SimpleTheoryLemma(id, lem, p, pg));
69	104005	return true;
70		}
71
72	26404	void InferenceManagerBuffered::addPendingLemma(
73		std::unique_ptr<TheoryInference> lemma)
74		{
75	26404	d_pendingLem.emplace_back(std::move(lemma));
76	26404	}
77
78		void InferenceManagerBuffered::addPendingFact(Node conc,
79		InferenceId id,
80		Node exp,
81		ProofGenerator* pg)
82		{
83		// make a simple theory internal fact
84		Assert(conc.getKind() != AND && conc.getKind() != OR);
85		d_pendingFact.emplace_back(new SimpleTheoryInternalFact(id, conc, exp, pg));
86		}
87
88	41077	void InferenceManagerBuffered::addPendingFact(
89		std::unique_ptr<TheoryInference> fact)
90		{
91	41077	d_pendingFact.emplace_back(std::move(fact));
92	41077	}
93
94	4958	void InferenceManagerBuffered::addPendingPhaseRequirement(Node lit, bool pol)
95		{
96		// it is the responsibility of the caller to ensure lit is rewritten
97	4958	d_pendingReqPhase[lit] = pol;
98	4958	}
99
100	6662186	void InferenceManagerBuffered::doPendingFacts()
101		{
102	6662186	size_t i = 0;
103	7774726	while (!d_theoryState.isInConflict() && i < d_pendingFact.size())
104		{
105		// assert the internal fact, which notice may enqueue more pending facts in
106		// this loop, or result in a conflict.
107	556270	assertInternalFactTheoryInference(d_pendingFact[i].get());
108	556270	i++;
109		}
110	6662186	d_pendingFact.clear();
111	6662186	}
112
113	6462857	void InferenceManagerBuffered::doPendingLemmas()
114		{
115	6462857	if (d_processingPendingLemmas)
116		{
117		// already processing
118	12718	return;
119		}
120	6450139	d_processingPendingLemmas = true;
121	6450139	size_t i = 0;
122	6769679	while (i < d_pendingLem.size())
123		{
124		// process this lemma, which notice may enqueue more pending lemmas in this
125		// loop, or clear the lemmas.
126	159771	lemmaTheoryInference(d_pendingLem[i].get());
127	159770	i++;
128		}
129	6450138	d_pendingLem.clear();
130	6450138	d_processingPendingLemmas = false;
131		}
132
133	278908	void InferenceManagerBuffered::doPendingPhaseRequirements()
134		{
135		// process the pending require phase calls
136	283864	for (const std::pair<const Node, bool>& prp : d_pendingReqPhase)
137		{
138	4956	requirePhase(prp.first, prp.second);
139		}
140	278908	d_pendingReqPhase.clear();
141	278908	}
142	1565374	void InferenceManagerBuffered::clearPending()
143		{
144	1565374	d_pendingFact.clear();
145	1565374	d_pendingLem.clear();
146	1565374	d_pendingReqPhase.clear();
147	1565374	}
148	1690	void InferenceManagerBuffered::clearPendingFacts() { d_pendingFact.clear(); }
149	26957	void InferenceManagerBuffered::clearPendingLemmas() { d_pendingLem.clear(); }
150	2856	void InferenceManagerBuffered::clearPendingPhaseRequirements()
151		{
152	2856	d_pendingReqPhase.clear();
153	2856	}
154
155	359237	std::size_t InferenceManagerBuffered::numPendingLemmas() const
156		{
157	359237	return d_pendingLem.size();
158		}
159		std::size_t InferenceManagerBuffered::numPendingFacts() const
160		{
161		return d_pendingFact.size();
162		}
163
164	164308	void InferenceManagerBuffered::lemmaTheoryInference(TheoryInference* lem)
165		{
166		// process this lemma
167	164308	LemmaProperty p = LemmaProperty::NONE;
168	328616	TrustNode tlem = lem->processLemma(p);
169	164308	Assert(!tlem.isNull());
170		// send the lemma
171	164308	trustedLemma(tlem, lem->getId(), p);
172	164307	}
173
174	556270	void InferenceManagerBuffered::assertInternalFactTheoryInference(
175		TheoryInference* fact)
176		{
177		// process this fact
178	1112540	std::vector<Node> exp;
179	556270	ProofGenerator* pg = nullptr;
180	1112540	Node lit = fact->processFact(exp, pg);
181	556270	Assert(!lit.isNull());
182	556270	bool pol = lit.getKind() != NOT;
183	1112540	TNode atom = pol ? lit : lit[0];
184		// no double negation or conjunctive conclusions
185	556270	Assert(atom.getKind() != NOT && atom.getKind() != AND);
186		// assert the internal fact
187	556270	assertInternalFact(atom, pol, fact->getId(), exp, pg);
188	556270	}
189
190	1532860	void InferenceManagerBuffered::notifyInConflict()
191		{
192	1532860	d_theoryState.notifyInConflict();
193		// also clear the pending facts, which will be stale after backtracking
194	1532860	clearPending();
195	1532860	}
196
197		} // namespace theory
198	31137	} // namespace cvc5