#include <external_sat.h>

Inheritance diagram for external_satt:

Collaboration diagram for external_satt:

Public Member Functions
	external_satt (message_handlert &message_handler, std::string cmd)

bool	has_assumptions () const override final

bool	has_is_in_conflict () const override final

std::string	solver_text () const override

bool	is_in_conflict (literalt) const override
	Returns true if an assumption is in the final conflict.

void	set_assignment (literalt, bool) override

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

assignmentt &	get_assignment ()

tvt	l_get (literalt literal) const override

virtual void	copy_assignment_from (const propt &prop)

void	print_assignment (std::ostream &out) const

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

virtual	~cnf_clause_listt ()

void	lcnf (const bvt &bv) override

tvt	l_get (literalt) const override

size_t	no_clauses () const override

clausest &	get_clauses ()

void	copy_to (cnft &cnf) const

size_t	hash () const

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 bool	has_set_to () const

virtual bool	cnf_handled_well () const

virtual void	set_variable_name (literalt, const irep_idt &)

resultt	prop_solve ()

resultt	prop_solve (const bvt &assumptions)

virtual void	set_frozen (literalt)

virtual void	set_time_limit_seconds (uint32_t)

std::size_t	get_number_of_solver_calls () const

Protected Member Functions
resultt	do_prop_solve (const bvt &assumptions) override

void	write_cnf_file (std::string, const bvt &)

std::string	execute_solver (std::string)

resultt	parse_result (std::string)

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 Attributes
std::string	solver_cmd

Protected Attributes inherited from cnf_clause_list_assignmentt
assignmentt	assignment

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

messaget	log

std::size_t	number_of_solver_calls = 0

Additional Inherited Members
Public Types inherited from cnf_clause_list_assignmentt
typedef std::vector< tvt >	assignmentt

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

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

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

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 10 of file external_sat.h.

Constructor & Destructor Documentation

◆ external_satt()

external_satt::external_satt	(	message_handlert &	message_handler,
		std::string	cmd
	)

explicit

Definition at line 19 of file external_sat.cpp.

Member Function Documentation

◆ do_prop_solve()

external_satt::resultt external_satt::do_prop_solve ( const bvt & assumptions )

overrideprotectedvirtual

Reimplemented from cnf_clause_listt.

Definition at line 170 of file external_sat.cpp.

◆ execute_solver()

std::string external_satt::execute_solver ( std::string cnf_file )

protected

Definition at line 62 of file external_sat.cpp.

◆ has_assumptions()

bool external_satt::has_assumptions ( ) const

inlinefinaloverridevirtual

Reimplemented from propt.

Definition at line 15 of file external_sat.h.

◆ has_is_in_conflict()

bool external_satt::has_is_in_conflict ( ) const

inlinefinaloverridevirtual

Reimplemented from propt.

Definition at line 20 of file external_sat.h.

◆ is_in_conflict()

bool external_satt::is_in_conflict ( literalt l ) const

overridevirtual

Returns true if an assumption is in the final conflict.

Note that only literals that are assumptions (see set_assumptions) may be queried.

Returns: true iff the given literal is part of the final conflict

Implements propt.

Definition at line 29 of file external_sat.cpp.

◆ parse_result()

external_satt::resultt external_satt::parse_result ( std::string solver_output )

protected

Definition at line 72 of file external_sat.cpp.

◆ set_assignment()

void external_satt::set_assignment	(	literalt	,
		bool
	)

overridevirtual

Implements propt.

Definition at line 34 of file external_sat.cpp.

◆ solver_text()

std::string external_satt::solver_text ( ) const

overridevirtual

Reimplemented from cnf_clause_listt.

Definition at line 24 of file external_sat.cpp.

◆ write_cnf_file()

void external_satt::write_cnf_file	(	std::string	cnf_file,
		const bvt &	assumptions
	)

protected

Definition at line 39 of file external_sat.cpp.

Member Data Documentation

◆ solver_cmd

std::string external_satt::solver_cmd

protected

Definition at line 31 of file external_sat.h.

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

/home/runner/work/cbmc/cbmc/src/solvers/sat/external_sat.h
/home/runner/work/cbmc/cbmc/src/solvers/sat/external_sat.cpp

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ external_satt()

Member Function Documentation

◆ do_prop_solve()

◆ execute_solver()

◆ has_assumptions()

◆ has_is_in_conflict()

◆ is_in_conflict()

◆ parse_result()

◆ set_assignment()

◆ solver_text()

◆ write_cnf_file()

Member Data Documentation

◆ solver_cmd