#include <qbf_bdd_core.h>

Inheritance diagram for qbf_bdd_coret:

Collaboration diagram for qbf_bdd_coret:

Public Member Functions
	qbf_bdd_coret ()

virtual	~qbf_bdd_coret ()

virtual literalt	new_variable ()
	Generate a new variable and return it as a literal. More...

virtual void	lcnf (const bvt &bv)

virtual literalt	lor (literalt a, literalt b)

virtual literalt	lor (const bvt &bv)
	Tseitin encoding of disjunction between multiple literals. More...

virtual const std::string	solver_text ()

virtual resultt	prop_solve ()

virtual tvt	l_get (literalt a) const

virtual bool	is_in_core (literalt l) const

virtual modeltypet	m_get (literalt a) const

Public Member Functions inherited from qbf_bdd_certificatet
	qbf_bdd_certificatet (void)

virtual	~qbf_bdd_certificatet (void)

virtual const exprt	f_get (literalt l)

Public Member Functions inherited from qdimacs_coret
void	simplify_extractbits (exprt &expr) const

Public Member Functions inherited from qdimacs_cnft
	qdimacs_cnft ()

virtual	~qdimacs_cnft ()

virtual void	write_qdimacs_cnf (std::ostream &out)

virtual void	add_quantifier (const quantifiert &quantifier)

void	add_quantifier (const quantifiert::typet type, const literalt l)

void	add_existential_quantifier (const literalt l)

void	add_universal_quantifier (const literalt l)

bool	is_quantified (const literalt l) const

bool	find_quantifier (const literalt l, quantifiert &q) const

virtual void	set_quantifier (const quantifiert::typet type, const literalt l)

void	copy_to (qdimacs_cnft &cnf) const

bool	operator== (const qdimacs_cnft &other) const

size_t	hash () const

Public Member Functions inherited from dimacs_cnft
	dimacs_cnft ()

virtual	~dimacs_cnft ()

virtual void	write_dimacs_cnf (std::ostream &out)

Public Member Functions inherited from cnf_clause_listt
	cnf_clause_listt ()

virtual	~cnf_clause_listt ()

virtual size_t	no_clauses () const

clausest &	get_clauses ()

void	copy_to (cnft &cnf) const

size_t	hash () const

Public Member Functions inherited from cnft
	cnft ()

virtual	~cnft ()

virtual literalt	land (literalt a, literalt b) override

virtual literalt	land (const bvt &bv) override
	Tseitin encoding of conjunction between multiple literals. More...

virtual literalt	lxor (const bvt &bv) override
	Tseitin encoding of XOR between multiple literals. More...

virtual literalt	lxor (literalt a, literalt b) override

virtual literalt	lnand (literalt a, literalt b) override

virtual literalt	lnor (literalt a, literalt b) override

virtual literalt	lequal (literalt a, literalt b) override

virtual literalt	limplies (literalt a, literalt b) override

virtual literalt	lselect (literalt a, literalt b, literalt c) override

virtual size_t	no_variables () const override

virtual void	set_no_variables (size_t no)

void	gate_and (literalt a, literalt b, literalt o)
	Tseitin encoding of conjunction of two literals. More...

void	gate_or (literalt a, literalt b, literalt o)
	Tseitin encoding of disjunction of two literals. More...

void	gate_xor (literalt a, literalt b, literalt o)
	Tseitin encoding of XOR of two literals. More...

void	gate_nand (literalt a, literalt b, literalt o)
	Tseitin encoding of NAND of two literals. More...

void	gate_nor (literalt a, literalt b, literalt o)
	Tseitin encoding of NOR of two literals. More...

void	gate_equal (literalt a, literalt b, literalt o)
	Tseitin encoding of equality between two literals. More...

void	gate_implies (literalt a, literalt b, literalt o)
	Tseitin encoding of implication between two literals. More...

Public Member Functions inherited from propt
	propt ()

virtual	~propt ()

virtual void	set_equal (literalt a, literalt b)
	asserts a==b in the propositional formula More...

virtual void	l_set_to (literalt a, bool value)

void	l_set_to_true (literalt a)

void	l_set_to_false (literalt a)

void	lcnf (literalt l0, literalt l1)

void	lcnf (literalt l0, literalt l1, literalt l2)

void	lcnf (literalt l0, literalt l1, literalt l2, literalt l3)

virtual bool	has_set_to () const

virtual bool	cnf_handled_well () const

virtual void	set_assumptions (const bvt &_assumptions)

virtual bool	has_set_assumptions () const

virtual void	set_variable_name (literalt a, const std::string &name)

bvt	new_variables (std::size_t width)
	generates a bitvector of given width with new variables More...

virtual void	set_assignment (literalt a, bool value)

virtual void	copy_assignment_from (const propt &prop)

virtual bool	is_in_conflict (literalt l) const

virtual bool	has_is_in_conflict () const

virtual void	set_frozen (literalt a)

Public Member Functions inherited from messaget
virtual void	set_message_handler (message_handlert &_message_handler)

message_handlert &	get_message_handler ()

	messaget ()

	messaget (const messaget &other)

	messaget (message_handlert &_message_handler)

virtual	~messaget ()

mstreamt &	get_mstream (unsigned message_level)

mstreamt &	error ()

mstreamt &	warning ()

mstreamt &	result ()

mstreamt &	status ()

mstreamt &	statistics ()

mstreamt &	progress ()

mstreamt &	debug ()

Public Member Functions inherited from prop_assignmentt
virtual	~prop_assignmentt ()

Protected Member Functions
void	compress_certificate (void)

Protected Member Functions inherited from qdimacs_cnft
void	write_prefix (std::ostream &out) const

Protected Member Functions inherited from dimacs_cnft
void	write_problem_line (std::ostream &out)

void	write_clauses (std::ostream &out)

Protected Member Functions inherited from cnft
bool	process_clause (const bvt &bv, bvt &dest)
	filter 'true' from clause, eliminate duplicates, recognise trivially satisfied clauses More...

Private Types
typedef std::vector< BDD * >	bdd_variable_mapt

Private Attributes
bdd_variable_mapt	bdd_variable_map

BDD *	matrix

Additional Inherited Members
Public Types inherited from qdimacs_coret
enum	modeltypet { M_TRUE, M_FALSE, M_DONTCARE, M_COMPLEX }

typedef std::pair< exprt, unsigned >	symbol_mapt

typedef std::map< unsigned, symbol_mapt >	variable_mapt

Public Types inherited from qdimacs_cnft
typedef std::vector< quantifiert >	quantifierst

Public Types inherited from cnf_clause_listt
typedef std::list< bvt >	clausest

Public Types inherited from propt
enum	resultt { resultt::P_SATISFIABLE, resultt::P_UNSATISFIABLE, resultt::P_ERROR }

Public Types inherited from messaget
enum	message_levelt { M_ERROR =1, M_WARNING =2, M_RESULT =4, M_STATUS =6, M_STATISTICS =8, M_PROGRESS =9, M_DEBUG =10 }

Static Public Member Functions inherited from cnf_clause_listt
static size_t	hash_clause (const bvt &bv)

Static Public Member Functions inherited from cnft
static bvt	eliminate_duplicates (const bvt &)
	eliminate duplicates from given vector of literals More...

Static Public Member Functions inherited from messaget
static mstreamt &	eom (mstreamt &m)

static mstreamt &	endl (mstreamt &m)

Public Attributes inherited from qdimacs_coret
variable_mapt	variable_map

Public Attributes inherited from qdimacs_cnft
quantifierst	quantifiers

Protected Types inherited from qbf_bdd_certificatet
typedef std::vector< BDD * >	model_bddst

typedef std::unordered_map< unsigned, exprt >	function_cachet

Static Protected Member Functions inherited from cnft
static bool	is_all (const bvt &bv, literalt l)

Protected Attributes inherited from qbf_bdd_certificatet
Cudd *	bdd_manager

model_bddst	model_bdds

function_cachet	function_cache

Protected Attributes inherited from dimacs_cnft
bool	break_lines

Protected Attributes inherited from cnf_clause_listt
clausest	clauses

Protected Attributes inherited from cnft
size_t	_no_variables

Protected Attributes inherited from propt
bvt	lcnf_bv

Protected Attributes inherited from messaget
message_handlert *	message_handler

mstreamt	mstream

Detailed Description

Definition at line 43 of file qbf_bdd_core.h.

Member Typedef Documentation

◆ bdd_variable_mapt

typedef std::vector<BDD*> qbf_bdd_coret::bdd_variable_mapt

private

Definition at line 46 of file qbf_bdd_core.h.

Constructor & Destructor Documentation

◆ qbf_bdd_coret()

qbf_bdd_coret::qbf_bdd_coret ( )

Definition at line 61 of file qbf_bdd_core.cpp.

References qbf_bdd_certificatet::bdd_manager, and matrix.

◆ ~qbf_bdd_coret()

qbf_bdd_coret::~qbf_bdd_coret ( )

virtual

Definition at line 67 of file qbf_bdd_core.cpp.

References bdd_variable_map, and matrix.

Member Function Documentation

◆ compress_certificate()

void qbf_bdd_coret::compress_certificate ( void )

protected

Definition at line 242 of file qbf_bdd_core.cpp.

References qbf_bdd_certificatet::bdd_manager, bdd_variable_map, messaget::eom(), qbf_bdd_certificatet::model_bdds, qdimacs_cnft::quantifiers, and messaget::status().

Referenced by prop_solve().

◆ is_in_core()

bool qbf_bdd_coret::is_in_core ( literalt l ) const

virtual

Implements qdimacs_coret.

Definition at line 154 of file qbf_bdd_core.cpp.

◆ l_get()

tvt qbf_bdd_coret::l_get ( literalt a ) const

virtual

Reimplemented from qbf_bdd_certificatet.

Definition at line 83 of file qbf_bdd_core.cpp.

◆ lcnf()

void qbf_bdd_coret::lcnf ( const bvt & bv )

virtual

Reimplemented from cnf_clause_listt.

Definition at line 176 of file qbf_bdd_core.cpp.

References qbf_bdd_certificatet::bdd_manager, bdd_variable_map, matrix, and cnft::process_clause().

◆ lor() [1/2]

literalt qbf_bdd_coret::lor	(	literalt	a,
		literalt	b
	)

virtual

parameters: Two inputs to the OR gate

Returns: Output signal of the OR gate as literal

Reimplemented from cnft.

Definition at line 198 of file qbf_bdd_core.cpp.

References bdd_variable_map, new_variable(), literalt::sign(), and literalt::var_no().

◆ lor() [2/2]

literalt qbf_bdd_coret::lor ( const bvt & bv )

virtual

Tseitin encoding of disjunction between multiple literals.

parameters: Any number of inputs to the OR gate

Returns: Output signal of the OR gate as literal

Reimplemented from cnft.

Definition at line 215 of file qbf_bdd_core.cpp.

References bdd_variable_map, const_literal(), new_variable(), and literalt::var_no().

◆ m_get()

qdimacs_coret::modeltypet qbf_bdd_coret::m_get ( literalt a ) const

virtual

Implements qdimacs_coret.

Definition at line 159 of file qbf_bdd_core.cpp.

◆ new_variable()

literalt qbf_bdd_coret::new_variable ( void )

virtual

Generate a new variable and return it as a literal.

Returns: New variable as literal

Reimplemented from qbf_bdd_certificatet.

Definition at line 164 of file qbf_bdd_core.cpp.

References qbf_bdd_certificatet::bdd_manager, bdd_variable_map, qbf_bdd_certificatet::new_variable(), and literalt::var_no().

Referenced by lor().

◆ prop_solve()

propt::resultt qbf_bdd_coret::prop_solve ( )

virtual

Reimplemented from cnf_clause_listt.

Definition at line 94 of file qbf_bdd_core.cpp.

References qbf_bdd_certificatet::bdd_manager, bdd_variable_map, compress_certificate(), messaget::eom(), matrix, qbf_bdd_certificatet::model_bdds, cnft::no_variables(), propt::P_ERROR, propt::P_SATISFIABLE, propt::P_UNSATISFIABLE, qdimacs_cnft::quantifiers, solver_text(), and messaget::status().

◆ solver_text()

const std::string qbf_bdd_coret::solver_text ( )

virtual

Reimplemented from qdimacs_cnft.

Definition at line 89 of file qbf_bdd_core.cpp.

Referenced by prop_solve().

Member Data Documentation

◆ bdd_variable_map

bdd_variable_mapt qbf_bdd_coret::bdd_variable_map

private

Definition at line 47 of file qbf_bdd_core.h.

Referenced by compress_certificate(), lcnf(), lor(), new_variable(), prop_solve(), and ~qbf_bdd_coret().

◆ matrix

BDD* qbf_bdd_coret::matrix

private

Definition at line 49 of file qbf_bdd_core.h.

Referenced by lcnf(), prop_solve(), qbf_bdd_coret(), and ~qbf_bdd_coret().

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

solvers/qbf/qbf_bdd_core.h
solvers/qbf/qbf_bdd_core.cpp

Public Member Functions

Protected Member Functions

Private Types

Private Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ bdd_variable_mapt

Constructor & Destructor Documentation

◆ qbf_bdd_coret()

◆ ~qbf_bdd_coret()

Member Function Documentation

◆ compress_certificate()

◆ is_in_core()

◆ l_get()

◆ lcnf()

◆ lor() [1/2]

◆ lor() [2/2]

◆ m_get()

◆ new_variable()

◆ prop_solve()

◆ solver_text()

Member Data Documentation

◆ bdd_variable_map

◆ matrix