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/********************* */
/*! \file inst_strategy.h
** \verbatim
** Original author: ajreynol
** Major contributors: none
** Minor contributors (to current version): none
** This file is part of the CVC4 prototype.
** Copyright (c) 2009, 2010, 2011 The Analysis of Computer Systems Group (ACSys)
** Courant Institute of Mathematical Sciences
** New York University
** See the file COPYING in the top-level source directory for licensing
** information.\endverbatim
**
** \brief Theory uf instantiation strategies
**/
#include "cvc4_private.h"
#ifndef __CVC4__INST_STRATEGY_H
#define __CVC4__INST_STRATEGY_H
#include "theory/quantifiers_engine.h"
#include "theory/quantifiers/trigger.h"
#include "context/context.h"
#include "context/context_mm.h"
#include "util/stats.h"
#include "theory/uf/theory_uf.h"
namespace CVC4 {
namespace theory {
namespace uf {
class InstantiatorTheoryUf;
//instantiation strategies
class InstStrategyCheckCESolved : public InstStrategy{
private:
/** InstantiatorTheoryUf class */
InstantiatorTheoryUf* d_th;
/** is solved? */
std::map< Node, bool > d_solved;
/** calc if f is solved */
void calcSolved( Node f );
/** process functions */
void processResetInstantiationRound( Theory::Effort effort );
int process( Node f, Theory::Effort effort, int e );
public:
InstStrategyCheckCESolved( InstantiatorTheoryUf* th, QuantifiersEngine* ie ) :
InstStrategy( ie ), d_th( th ){}
~InstStrategyCheckCESolved(){}
/** identify */
std::string identify() const { return std::string("CheckCESolved"); }
};/* class InstStrategyCheckCESolved */
class InstStrategyUserPatterns : public InstStrategy{
private:
/** InstantiatorTheoryUf class */
InstantiatorTheoryUf* d_th;
/** explicitly provided patterns */
std::map< Node, std::vector< inst::Trigger* > > d_user_gen;
/** counter for quantifiers */
std::map< Node, int > d_counter;
/** process functions */
void processResetInstantiationRound( Theory::Effort effort );
int process( Node f, Theory::Effort effort, int e );
public:
InstStrategyUserPatterns( InstantiatorTheoryUf* th, QuantifiersEngine* ie ) :
InstStrategy( ie ), d_th( th ){}
~InstStrategyUserPatterns(){}
public:
/** add pattern */
void addUserPattern( Node f, Node pat );
/** get num patterns */
int getNumUserGenerators( Node f ) { return (int)d_user_gen[f].size(); }
/** get user pattern */
inst::Trigger* getUserGenerator( Node f, int i ) { return d_user_gen[f][ i ]; }
/** identify */
std::string identify() const { return std::string("UserPatterns"); }
};/* class InstStrategyUserPatterns */
class InstStrategyAutoGenTriggers : public InstStrategy{
public:
enum {
RELEVANCE_NONE,
RELEVANCE_DEFAULT,
};
private:
/** InstantiatorTheoryUf class */
InstantiatorTheoryUf* d_th;
/** trigger generation strategy */
int d_tr_strategy;
/** relevance strategy */
int d_rlv_strategy;
/** regeneration */
bool d_regenerate;
int d_regenerate_frequency;
/** generate additional triggers */
bool d_generate_additional;
/** triggers for each quantifier */
std::map< Node, std::map< inst::Trigger*, bool > > d_auto_gen_trigger;
std::map< Node, int > d_counter;
/** single, multi triggers for each quantifier */
std::map< Node, std::vector< Node > > d_patTerms[2];
std::map< Node, bool > d_is_single_trigger;
std::map< Node, bool > d_single_trigger_gen;
std::map< Node, bool > d_made_multi_trigger;
private:
/** process functions */
void processResetInstantiationRound( Theory::Effort effort );
int process( Node f, Theory::Effort effort, int e );
/** generate triggers */
void generateTriggers( Node f );
public:
InstStrategyAutoGenTriggers( InstantiatorTheoryUf* th, QuantifiersEngine* ie, int tstrt, int rstrt, int rgfr = -1 ) :
InstStrategy( ie ), d_th( th ), d_tr_strategy( tstrt ), d_rlv_strategy( rstrt ), d_generate_additional( false ){
setRegenerateFrequency( rgfr );
}
~InstStrategyAutoGenTriggers(){}
public:
/** get auto-generated trigger */
inst::Trigger* getAutoGenTrigger( Node f );
/** identify */
std::string identify() const { return std::string("AutoGenTriggers"); }
/** set regenerate frequency, if fr<0, turn off regenerate */
void setRegenerateFrequency( int fr ){
if( fr<0 ){
d_regenerate = false;
}else{
d_regenerate_frequency = fr;
d_regenerate = true;
}
}
/** set generate additional */
void setGenerateAdditional( bool val ) { d_generate_additional = val; }
};/* class InstStrategyAutoGenTriggers */
#if 0
class InstStrategyAddFailSplits : public InstStrategy{
private:
/** InstantiatorTheoryUf class */
InstantiatorTheoryUf* d_th;
/** process functions */
void processResetInstantiationRound( Theory::Effort effort );
int process( Node f, Theory::Effort effort, int e );
public:
InstStrategyAddFailSplits( InstantiatorTheoryUf* th, QuantifiersEngine* ie ) :
InstStrategy( ie ), d_th( th ){}
~InstStrategyAddFailSplits(){}
/** identify */
std::string identify() const { return std::string("AddFailSplits"); }
};/* class InstStrategyAddFailSplits */
#endif /* 0 */
class InstStrategyFreeVariable : public InstStrategy{
private:
/** InstantiatorTheoryUf class */
InstantiatorTheoryUf* d_th;
/** guessed instantiations */
std::map< Node, bool > d_guessed;
/** process functions */
void processResetInstantiationRound( Theory::Effort effort );
int process( Node f, Theory::Effort effort, int e );
public:
InstStrategyFreeVariable( InstantiatorTheoryUf* th, QuantifiersEngine* ie ) :
InstStrategy( ie ), d_th( th ){}
~InstStrategyFreeVariable(){}
/** identify */
std::string identify() const { return std::string("FreeVariable"); }
};/* class InstStrategyFreeVariable */
}/* CVC4::theory::uf namespace */
}/* CVC4::theory namespace */
}/* CVC4 namespace */
#endif
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