#include <cnf.h>

Inheritance diagram for cnf_solvert:

Collaboration diagram for cnf_solvert:

Public Member Functions
	cnf_solvert (message_handlert &message_handler)

virtual size_t	no_clauses () const override

Public Member Functions inherited from cnft
	cnft (message_handlert &message_handler)

virtual	~cnft ()

virtual literalt	land (literalt a, literalt b) override

virtual literalt	lor (literalt a, literalt b) override

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

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

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

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

bvt	new_variables (std::size_t width) override
	Generate a vector of new variables.

virtual size_t	no_variables () const override

virtual void	set_no_variables (size_t no)

Public Member Functions inherited from propt
	propt (message_handlert &message_handler)

virtual	~propt ()

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

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 void	lcnf (const bvt &bv)=0

virtual bool	has_set_to () const

virtual bool	cnf_handled_well () const

virtual bool	has_assumptions () const

virtual void	set_variable_name (literalt, const irep_idt &)

virtual std::string	solver_text () const =0

resultt	prop_solve ()

resultt	prop_solve (const bvt &assumptions)

virtual tvt	l_get (literalt a) const =0

virtual void	set_assignment (literalt a, bool value)=0

virtual bool	is_in_conflict (literalt l) const =0
	Returns true if an assumption is in the final conflict.

virtual bool	has_is_in_conflict () const

virtual void	set_frozen (literalt)

virtual void	set_time_limit_seconds (uint32_t)

std::size_t	get_number_of_solver_calls () const

Protected Types
enum class	statust { INIT , SAT , UNSAT , ERROR }

Protected Attributes
statust	status

size_t	clause_counter

Protected Attributes inherited from cnft
size_t	_no_variables

Protected Attributes inherited from propt
bvt	lcnf_bv

messaget	log

std::size_t	number_of_solver_calls = 0

Additional Inherited Members
Public Types inherited from propt
enum class	resultt { P_SATISFIABLE , P_UNSATISFIABLE , P_ERROR }

Protected Member Functions inherited from cnft
void	gate_and (literalt a, literalt b, literalt o)
	Tseitin encoding of conjunction of two literals.

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

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

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

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

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

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

bool	process_clause (const bvt &bv, bvt &dest) const
	filter 'true' from clause, eliminate duplicates, recognise trivially satisfied clauses

Protected Member Functions inherited from propt
virtual resultt	do_prop_solve (const bvt &assumptions)=0

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

static bool	is_all (const bvt &bv, literalt l)

Detailed Description

Definition at line 72 of file cnf.h.

Member Enumeration Documentation

◆ statust

enum class cnf_solvert::statust

strongprotected

Enumerator
INIT
SAT
UNSAT
ERROR

Definition at line 86 of file cnf.h.

Constructor & Destructor Documentation

◆ cnf_solvert()

cnf_solvert::cnf_solvert ( message_handlert & message_handler )

inlineexplicit

Definition at line 75 of file cnf.h.

Member Function Documentation

◆ no_clauses()

virtual size_t cnf_solvert::no_clauses ( ) const

inlineoverridevirtual

Implements cnft.

Definition at line 80 of file cnf.h.

Member Data Documentation

◆ clause_counter

size_t cnf_solvert::clause_counter

protected

Definition at line 88 of file cnf.h.

◆ status

statust cnf_solvert::status

protected

Definition at line 87 of file cnf.h.

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

/home/runner/work/cbmc/cbmc/src/solvers/sat/cnf.h

Public Member Functions

Protected Types

Protected Attributes

Additional Inherited Members