Base class for every method that relies on a SAT solver. More...

#include <SATCNFMethod.h>

Inheritance diagram for gsjj::passive::CNF::SATCNFMethod:

Collaboration diagram for gsjj::passive::CNF::SATCNFMethod:

Public Member Functions
	SATCNFMethod ()=delete

virtual	~SATCNFMethod ()

bool	solve () override
	Solves the SAT/SMT problem induced by the method. More...

std::unique_ptr< DFA< char > >	constructDFA () override
	Constructs the DFA induced by the variables according to the method. More...

virtual void	setStopTrigger (const std::chrono::seconds &timeLimit, std::atomic_bool &stopTrigger, const bool *stopPointer) override
	Sets the stop trigger for this method. More...

Public Member Functions inherited from gsjj::passive::Method
	Method ()=delete

virtual	~Method ()

bool	hasSolution () const
	If solve() has been called and if there exists a solution, return True. More...

unsigned int	numberOfStates () const
	Gives the number of states of the prospected DFA (the n) More...

double	timeToSolve () const
	Gives the CPU time taken to solve the problem. More...

Protected Member Functions
Minisat::Var	newVariable ()
	Creates a new variable in the SAT solver. More...

void	addClause (const Minisat::vec< Minisat::Lit > &clause)
	Adds a new clause to the SAT solver. More...

virtual void	createVariables ()=0
	Creates all needed variables for the method. More...

virtual void	createClauses ()=0
	Creates all needed clauses for the method. More...

virtual std::unique_ptr< DFA< char > >	toDFA (const Minisat::vec< Minisat::lbool > &model) const =0
	Effectively creates the DFA from the values of the variables in the given model. More...

	SATCNFMethod (const std::set< std::string > &SpSet, const std::set< std::string > &SmSet, const std::set< std::string > &SSet, const std::set< std::string > &prefixesSet, const std::set< char > &alphabetSet, unsigned int n)

Protected Member Functions inherited from gsjj::passive::Method
	Method (const std::set< std::string > &SpSet, const std::set< std::string > &SmSet, const std::set< std::string > &SSet, const std::set< std::string > &prefixesSet, const std::set< char > &alphabetSet, unsigned int n)
	Creates the method. More...

Additional Inherited Members
Protected Attributes inherited from gsjj::passive::Method
const std::set< std::string >	m_Sp
	The set of words to accept . More...

const std::set< std::string >	m_Sm
	The set of words to reject . More...

const unsigned int	m_numberStates
	The number of states in the DFA to construct. More...

const std::set< std::string >	m_S
	In the code, $S = S_+ \cup S_-$ . More...

const std::set< std::string >	m_prefixes
	$Pref(S_+ \cup S_-)$ More...

const std::set< char >	m_alphabet
	$\Sigma$ More...

bool	m_triedSolve

bool	m_hasSolution

double	m_cpuTimeStart

double	m_cpuTimeEnd

Detailed Description

Base class for every method that relies on a SAT solver.

It creates a SAT solver and defines some functions to easily create a new variable and new clauses.

Definition at line 22 of file SATCNFMethod.h.

Constructor & Destructor Documentation

◆ SATCNFMethod() [1/2]

gsjj::passive::CNF::SATCNFMethod::SATCNFMethod ( )

delete

◆ ~SATCNFMethod()

gsjj::passive::CNF::SATCNFMethod::~SATCNFMethod ( )

virtual

Definition at line 18 of file SATCNFMethod.cpp.

◆ SATCNFMethod() [2/2]

gsjj::passive::CNF::SATCNFMethod::SATCNFMethod	(	const std::set< std::string > &	SpSet,
		const std::set< std::string > &	SmSet,
		const std::set< std::string > &	SSet,
		const std::set< std::string > &	prefixesSet,
		const std::set< char > &	alphabetSet,
		unsigned int	n
	)

protected

Definition at line 12 of file SATCNFMethod.cpp.

Member Function Documentation

◆ addClause()

void gsjj::passive::CNF::SATCNFMethod::addClause ( const Minisat::vec< Minisat::Lit > & clause )

protected

Adds a new clause to the SAT solver.

It creates a copy of the given clause. Therefore, one can use the same Minisat::vec to construct every clause.

Parameters

clause The clause to add

Definition at line 70 of file SATCNFMethod.cpp.

◆ constructDFA()

std::unique_ptr< DFA< char > > gsjj::passive::CNF::SATCNFMethod::constructDFA ( )

overridevirtual

Constructs the DFA induced by the variables according to the method.

If the SAT/SMT problem has not yet been solved, the function automatically solves it. If the SAT/SMT problem is unsolvable, returns a null pointer.

Returns: An unique_ptr to the constructed DFA or an empty pointer if the problem is not solvable

Implements gsjj::passive::Method.

Definition at line 45 of file SATCNFMethod.cpp.

◆ createClauses()

virtual void gsjj::passive::CNF::SATCNFMethod::createClauses ( )

protectedpure virtual

Creates all needed clauses for the method.

Implemented in gsjj::passive::CNF::HeuleVerwerCNFMethod, and gsjj::passive::CNF::UnaryCNFMethod.

◆ createVariables()

virtual void gsjj::passive::CNF::SATCNFMethod::createVariables ( )

protectedpure virtual

Creates all needed variables for the method.

Implemented in gsjj::passive::CNF::HeuleVerwerCNFMethod, and gsjj::passive::CNF::UnaryCNFMethod.

◆ newVariable()

Minisat::Var gsjj::passive::CNF::SATCNFMethod::newVariable ( )

protected

Creates a new variable in the SAT solver.

A Minisat::Var is actually just an integer

Returns: The new variable

Definition at line 66 of file SATCNFMethod.cpp.

◆ setStopTrigger()

void gsjj::passive::CNF::SATCNFMethod::setStopTrigger	(	const std::chrono::seconds &	timeLimit,
		std::atomic_bool &	stopTrigger,
		const bool *	stopPointer
	)

overridevirtual

Sets the stop trigger for this method.

Since we use three different solvers and each has its own way to stop (CVC4 uses a function to set a time limit, Maple is in C++ so we can use an atomic variable and Limboole is in C and we must use a pointer), we must provide each possibility

Parameters

timeLimit	The time in seconds the method can take. It's used by SMT methods.
stopTrigger	The atomic_bool variable. Once set to true, the method will stop. It's used by CNF methods.
stopPointer	The pointer variable. Once the value is set to true, the method will stop. It's used by NonCNF methods.

Implements gsjj::passive::Method.

Definition at line 62 of file SATCNFMethod.cpp.

◆ solve()

bool gsjj::passive::CNF::SATCNFMethod::solve ( )

overridevirtual

Solves the SAT/SMT problem induced by the method.

Il also creates every variable and clause needed

Returns: True iff the problem is solvable

Implements gsjj::passive::Method.

Definition at line 22 of file SATCNFMethod.cpp.

◆ toDFA()

virtual std::unique_ptr<DFA<char> > gsjj::passive::CNF::SATCNFMethod::toDFA ( const Minisat::vec< Minisat::lbool > & model ) const

protectedpure virtual

Effectively creates the DFA from the values of the variables in the given model.

Parameters

model The model

Returns: An unique_ptr to the constructed DFA

Implemented in gsjj::passive::CNF::HeuleVerwerCNFMethod, and gsjj::passive::CNF::UnaryCNFMethod.

The documentation for this class was generated from the following files:

include/gsjj/passive/CNF/SATCNFMethod.h
src/passive/CNF/SATCNFMethod.cpp

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ SATCNFMethod() [1/2]

◆ ~SATCNFMethod()

◆ SATCNFMethod() [2/2]

Member Function Documentation

◆ addClause()

◆ constructDFA()

◆ createClauses()

◆ createVariables()

◆ newVariable()

◆ setStopTrigger()

◆ solve()

◆ toDFA()