Head

GCC Code Coverage Report

Directory:	.		Exec	Total	Coverage
File:	src/theory/arith/callbacks.cpp	Lines:	103	117	88.0 %
Date:	2021-11-07	Branches:	100	436	22.9 %


/******************************************************************************
 * Top contributors (to current version):
 *   Tim King, Haniel Barbosa, Mathias Preiner
 *
 * 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.
 * ****************************************************************************
 *
 * [[ Add one-line brief description here ]]
 *
 * [[ Add lengthier description here ]]
 * \todo document this file
 */

#include "theory/arith/callbacks.h"

#include "expr/skolem_manager.h"
#include "proof/proof_node.h"
#include "theory/arith/theory_arith_private.h"

namespace cvc5 {
namespace theory {
namespace arith {

SetupLiteralCallBack::SetupLiteralCallBack(TheoryArithPrivate& ta)
  : d_arith(ta)
{}
void SetupLiteralCallBack::operator()(TNode lit){
  TNode atom = (lit.getKind() == kind::NOT) ? lit[0] : lit;
  if(!d_arith.isSetup(atom)){
    d_arith.setupAtom(atom);
  }
}

DeltaComputeCallback::DeltaComputeCallback(const TheoryArithPrivate& ta)
  : d_ta(ta)
{}
Rational DeltaComputeCallback::operator()() const{
  return d_ta.deltaValueForTotalOrder();
}

TempVarMalloc::TempVarMalloc(TheoryArithPrivate& ta)
: d_ta(ta)
{}
ArithVar TempVarMalloc::request(){
  NodeManager* nm = NodeManager::currentNM();
  SkolemManager* sm = nm->getSkolemManager();
  Node skolem = sm->mkDummySkolem("tmpVar", nm->realType());
  return d_ta.requestArithVar(skolem, false, true);
}
void TempVarMalloc::release(ArithVar v){
  d_ta.releaseArithVar(v);
}

BasicVarModelUpdateCallBack::BasicVarModelUpdateCallBack(TheoryArithPrivate& ta)
  : d_ta(ta)
{}
void BasicVarModelUpdateCallBack::operator()(ArithVar x){
  d_ta.signal(x);
}

RaiseConflict::RaiseConflict(TheoryArithPrivate& ta)
  : d_ta(ta)
{}

void RaiseConflict::raiseConflict(ConstraintCP c, InferenceId id) const{
  Assert(c->inConflict());
  d_ta.raiseConflict(c, id);
}

FarkasConflictBuilder::FarkasConflictBuilder(bool produceProofs)
    : d_farkas(),
      d_constraints(),
      d_consequent(NullConstraint),
      d_consequentSet(false),
      d_produceProofs(produceProofs)
{
  reset();
}

bool FarkasConflictBuilder::underConstruction() const{
  return d_consequent != NullConstraint;
}

bool FarkasConflictBuilder::consequentIsSet() const{
  return d_consequentSet;
}

void FarkasConflictBuilder::reset(){
  d_consequent = NullConstraint;
  d_constraints.clear();
  d_consequentSet = false;
  if (d_produceProofs)
  {
    d_farkas.clear();
  }
  Assert(!underConstruction());
}

/* Adds a constraint to the constraint under construction. */
void FarkasConflictBuilder::addConstraint(ConstraintCP c, const Rational& fc){
  Assert(
      !d_produceProofs
      || (!underConstruction() && d_constraints.empty() && d_farkas.empty())
      || (underConstruction() && d_constraints.size() + 1 == d_farkas.size()));
  Assert(d_produceProofs || d_farkas.empty());
  Assert(c->isTrue());

  if(d_consequent == NullConstraint){
    d_consequent = c;
  } else {
    d_constraints.push_back(c);
  }
  if (d_produceProofs)
  {
    d_farkas.push_back(fc);
  }
  Assert(!d_produceProofs || d_constraints.size() + 1 == d_farkas.size());
  Assert(d_produceProofs || d_farkas.empty());
}

void FarkasConflictBuilder::addConstraint(ConstraintCP c, const Rational& fc, const Rational& mult){
  Assert(!mult.isZero());
  if (d_produceProofs && !mult.isOne())
  {
    Rational prod = fc * mult;
    addConstraint(c, prod);
  }
  else
  {
    addConstraint(c, fc);
  }
}

void FarkasConflictBuilder::makeLastConsequent(){
  Assert(!d_consequentSet);
  Assert(underConstruction());

  if(d_constraints.empty()){
    // no-op
    d_consequentSet = true;
  } else {
    Assert(d_consequent != NullConstraint);
    ConstraintCP last = d_constraints.back();
    d_constraints.back() = d_consequent;
    d_consequent = last;
    if (d_produceProofs)
    {
      std::swap(d_farkas.front(), d_farkas.back());
    }
    d_consequentSet = true;
  }

  Assert(!d_consequent->negationHasProof());
  Assert(d_consequentSet);
}

/* Turns the vector under construction into a conflict */
ConstraintCP FarkasConflictBuilder::commitConflict(){
  Assert(underConstruction());
  Assert(!d_constraints.empty());
  Assert(
      !d_produceProofs
      || (!underConstruction() && d_constraints.empty() && d_farkas.empty())
      || (underConstruction() && d_constraints.size() + 1 == d_farkas.size()));
  Assert(d_produceProofs || d_farkas.empty());
  Assert(d_consequentSet);

  ConstraintP not_c = d_consequent->getNegation();
  RationalVectorCP coeffs = d_produceProofs ? &d_farkas : nullptr;
  not_c->impliedByFarkas(d_constraints, coeffs, true );

  reset();
  Assert(!underConstruction());
  Assert(not_c->inConflict());
  Assert(!d_consequentSet);
  return not_c;
}

RaiseEqualityEngineConflict::RaiseEqualityEngineConflict(TheoryArithPrivate& ta)
  : d_ta(ta)
{}

/* If you are not an equality engine, don't use this! */
void RaiseEqualityEngineConflict::raiseEEConflict(
    Node n, std::shared_ptr<ProofNode> pf) const
{
  d_ta.raiseBlackBoxConflict(n, pf);
}

BoundCountingLookup::BoundCountingLookup(TheoryArithPrivate& ta)
: d_ta(ta)
{}

const BoundsInfo& BoundCountingLookup::boundsInfo(ArithVar basic) const{
  return d_ta.boundsInfo(basic);
}

BoundCounts BoundCountingLookup::atBounds(ArithVar basic) const{
  return boundsInfo(basic).atBounds();
}
BoundCounts BoundCountingLookup::hasBounds(ArithVar basic) const {
  return boundsInfo(basic).hasBounds();
}

}  // namespace arith
}  // namespace theory
}  // namespace cvc5


Generated by: GCOVR (Version 3.2)

Line	Exec	Source
1		/******************************************************************************
2		* Top contributors (to current version):
3		* Tim King, Haniel Barbosa, Mathias Preiner
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		* [[ Add one-line brief description here ]]
14		*
15		* [[ Add lengthier description here ]]
16		* \todo document this file
17		*/
18
19		#include "theory/arith/callbacks.h"
20
21		#include "expr/skolem_manager.h"
22		#include "proof/proof_node.h"
23		#include "theory/arith/theory_arith_private.h"
24
25		namespace cvc5 {
26		namespace theory {
27		namespace arith {
28
29	15273	SetupLiteralCallBack::SetupLiteralCallBack(TheoryArithPrivate& ta)
30	15273	: d_arith(ta)
31	15273	{}
32	21922	void SetupLiteralCallBack::operator()(TNode lit){
33	43844	TNode atom = (lit.getKind() == kind::NOT) ? lit[0] : lit;
34	21922	if(!d_arith.isSetup(atom)){
35	21922	d_arith.setupAtom(atom);
36		}
37	21922	}
38
39	15273	DeltaComputeCallback::DeltaComputeCallback(const TheoryArithPrivate& ta)
40	15273	: d_ta(ta)
41	15273	{}
42	59076	Rational DeltaComputeCallback::operator()() const{
43	59076	return d_ta.deltaValueForTotalOrder();
44		}
45
46	61092	TempVarMalloc::TempVarMalloc(TheoryArithPrivate& ta)
47	61092	: d_ta(ta)
48	61092	{}
49		ArithVar TempVarMalloc::request(){
50		NodeManager* nm = NodeManager::currentNM();
51		SkolemManager* sm = nm->getSkolemManager();
52		Node skolem = sm->mkDummySkolem("tmpVar", nm->realType());
53		return d_ta.requestArithVar(skolem, false, true);
54		}
55		void TempVarMalloc::release(ArithVar v){
56		d_ta.releaseArithVar(v);
57		}
58
59	15273	BasicVarModelUpdateCallBack::BasicVarModelUpdateCallBack(TheoryArithPrivate& ta)
60	15273	: d_ta(ta)
61	15273	{}
62	8271146	void BasicVarModelUpdateCallBack::operator()(ArithVar x){
63	8271146	d_ta.signal(x);
64	8271146	}
65
66	76365	RaiseConflict::RaiseConflict(TheoryArithPrivate& ta)
67	76365	: d_ta(ta)
68	76365	{}
69
70	84620	void RaiseConflict::raiseConflict(ConstraintCP c, InferenceId id) const{
71	84620	Assert(c->inConflict());
72	84620	d_ta.raiseConflict(c, id);
73	84620	}
74
75	61092	FarkasConflictBuilder::FarkasConflictBuilder(bool produceProofs)
76		: d_farkas(),
77		d_constraints(),
78		d_consequent(NullConstraint),
79		d_consequentSet(false),
80	61092	d_produceProofs(produceProofs)
81		{
82	61092	reset();
83	61092	}
84
85	973778	bool FarkasConflictBuilder::underConstruction() const{
86	973778	return d_consequent != NullConstraint;
87		}
88
89	84620	bool FarkasConflictBuilder::consequentIsSet() const{
90	84620	return d_consequentSet;
91		}
92
93	145712	void FarkasConflictBuilder::reset(){
94	145712	d_consequent = NullConstraint;
95	145712	d_constraints.clear();
96	145712	d_consequentSet = false;
97	145712	if (d_produceProofs)
98		{
99	60842	d_farkas.clear();
100		}
101	145712	Assert(!underConstruction());
102	145712	}
103
104		/* Adds a constraint to the constraint under construction. */
105	1078215	void FarkasConflictBuilder::addConstraint(ConstraintCP c, const Rational& fc){
106	1078215	Assert(
107		!d_produceProofs
108		\|\| (!underConstruction() && d_constraints.empty() && d_farkas.empty())
109		\|\| (underConstruction() && d_constraints.size() + 1 == d_farkas.size()));
110	1078215	Assert(d_produceProofs \|\| d_farkas.empty());
111	1078215	Assert(c->isTrue());
112
113	1078215	if(d_consequent == NullConstraint){
114	84620	d_consequent = c;
115		} else {
116	993595	d_constraints.push_back(c);
117		}
118	1078215	if (d_produceProofs)
119		{
120	230350	d_farkas.push_back(fc);
121		}
122	1078215	Assert(!d_produceProofs \|\| d_constraints.size() + 1 == d_farkas.size());
123	1078215	Assert(d_produceProofs \|\| d_farkas.empty());
124	1078215	}
125
126	1078215	void FarkasConflictBuilder::addConstraint(ConstraintCP c, const Rational& fc, const Rational& mult){
127	1078215	Assert(!mult.isZero());
128	1078215	if (d_produceProofs && !mult.isOne())
129		{
130	223686	Rational prod = fc * mult;
131	111843	addConstraint(c, prod);
132		}
133		else
134		{
135	966372	addConstraint(c, fc);
136		}
137	1078215	}
138
139	84620	void FarkasConflictBuilder::makeLastConsequent(){
140	84620	Assert(!d_consequentSet);
141	84620	Assert(underConstruction());
142
143	84620	if(d_constraints.empty()){
144		// no-op
145	3806	d_consequentSet = true;
146		} else {
147	80814	Assert(d_consequent != NullConstraint);
148	80814	ConstraintCP last = d_constraints.back();
149	80814	d_constraints.back() = d_consequent;
150	80814	d_consequent = last;
151	80814	if (d_produceProofs)
152		{
153	28018	std::swap(d_farkas.front(), d_farkas.back());
154		}
155	80814	d_consequentSet = true;
156		}
157
158	84620	Assert(!d_consequent->negationHasProof());
159	84620	Assert(d_consequentSet);
160	84620	}
161
162		/* Turns the vector under construction into a conflict */
163	84620	ConstraintCP FarkasConflictBuilder::commitConflict(){
164	84620	Assert(underConstruction());
165	84620	Assert(!d_constraints.empty());
166	84620	Assert(
167		!d_produceProofs
168		\|\| (!underConstruction() && d_constraints.empty() && d_farkas.empty())
169		\|\| (underConstruction() && d_constraints.size() + 1 == d_farkas.size()));
170	84620	Assert(d_produceProofs \|\| d_farkas.empty());
171	84620	Assert(d_consequentSet);
172
173	84620	ConstraintP not_c = d_consequent->getNegation();
174	84620	RationalVectorCP coeffs = d_produceProofs ? &d_farkas : nullptr;
175	84620	not_c->impliedByFarkas(d_constraints, coeffs, true );
176
177	84620	reset();
178	84620	Assert(!underConstruction());
179	84620	Assert(not_c->inConflict());
180	84620	Assert(!d_consequentSet);
181	84620	return not_c;
182		}
183
184	15273	RaiseEqualityEngineConflict::RaiseEqualityEngineConflict(TheoryArithPrivate& ta)
185	15273	: d_ta(ta)
186	15273	{}
187
188		/* If you are not an equality engine, don't use this! */
189	2496	void RaiseEqualityEngineConflict::raiseEEConflict(
190		Node n, std::shared_ptr<ProofNode> pf) const
191		{
192	2496	d_ta.raiseBlackBoxConflict(n, pf);
193	2496	}
194
195	15273	BoundCountingLookup::BoundCountingLookup(TheoryArithPrivate& ta)
196	15273	: d_ta(ta)
197	15273	{}
198
199		const BoundsInfo& BoundCountingLookup::boundsInfo(ArithVar basic) const{
200		return d_ta.boundsInfo(basic);
201		}
202
203		BoundCounts BoundCountingLookup::atBounds(ArithVar basic) const{
204		return boundsInfo(basic).atBounds();
205		}
206		BoundCounts BoundCountingLookup::hasBounds(ArithVar basic) const {
207		return boundsInfo(basic).hasBounds();
208		}
209
210		} // namespace arith
211		} // namespace theory
212	31137	} // namespace cvc5