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dimacs_cnft Class Reference

#include <dimacs_cnf.h>

+ Inheritance diagram for dimacs_cnft:
+ Collaboration diagram for dimacs_cnft:

Public Member Functions

 dimacs_cnft (message_handlert &)
 
virtual ~dimacs_cnft ()
 
virtual void write_dimacs_cnf (std::ostream &out)
 
std::string solver_text () const override
 
void set_assignment (literalt a, bool value) override
 
bool is_in_conflict (literalt l) const override
 Returns true if an assumption is in the final conflict. More...
 
- 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. More...
 
virtual literalt lor (const bvt &bv) override
 Tseitin encoding of disjunction 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 literalt new_variable () override
 Generate a new variable and return it as a literal. More...
 
bvt new_variables (std::size_t width) override
 Generate a vector of new variables. More...
 
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 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 bool has_assumptions () const
 
virtual void set_variable_name (literalt, const irep_idt &)
 
resultt prop_solve ()
 
resultt prop_solve (const bvt &assumptions)
 
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
 

Static Public Member Functions

static void write_dimacs_clause (const bvt &, std::ostream &, bool break_lines)
 
- Static Public Member Functions inherited from cnf_clause_listt
static size_t hash_clause (const bvt &bv)
 

Protected Member Functions

void write_problem_line (std::ostream &out)
 
void write_clauses (std::ostream &out)
 
- Protected Member Functions inherited from cnf_clause_listt
resultt do_prop_solve (const bvt &) override
 
- Protected Member Functions inherited from cnft
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...
 
bool process_clause (const bvt &bv, bvt &dest) const
 filter 'true' from clause, eliminate duplicates, recognise trivially satisfied clauses More...
 

Protected Attributes

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
 
messaget log
 
std::size_t number_of_solver_calls = 0
 

Additional Inherited Members

- 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 Protected Member Functions inherited from cnft
static bvt eliminate_duplicates (const bvt &)
 eliminate duplicates from given vector of literals More...
 
static bool is_all (const bvt &bv, literalt l)
 

Detailed Description

Definition at line 17 of file dimacs_cnf.h.

Constructor & Destructor Documentation

◆ dimacs_cnft()

dimacs_cnft::dimacs_cnft ( message_handlert &  message_handler)
explicit

Definition at line 17 of file dimacs_cnf.cpp.

◆ ~dimacs_cnft()

virtual dimacs_cnft::~dimacs_cnft ( )
inlinevirtual

Definition at line 21 of file dimacs_cnf.h.

Member Function Documentation

◆ is_in_conflict()

bool dimacs_cnft::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 27 of file dimacs_cnf.cpp.

◆ set_assignment()

void dimacs_cnft::set_assignment ( literalt  a,
bool  value 
)
overridevirtual

Implements propt.

Definition at line 22 of file dimacs_cnf.cpp.

◆ solver_text()

std::string dimacs_cnft::solver_text ( ) const
inlineoverridevirtual

Reimplemented from cnf_clause_listt.

Reimplemented in satcheck_zcoret, and pbs_dimacs_cnft.

Definition at line 27 of file dimacs_cnf.h.

◆ write_clauses()

void dimacs_cnft::write_clauses ( std::ostream &  out)
protected

Definition at line 79 of file dimacs_cnf.cpp.

◆ write_dimacs_clause()

void dimacs_cnft::write_dimacs_clause ( const bvt &  clause,
std::ostream &  out,
bool  break_lines 
)
static

Definition at line 53 of file dimacs_cnf.cpp.

◆ write_dimacs_cnf()

void dimacs_cnft::write_dimacs_cnf ( std::ostream &  out)
virtual

Definition at line 40 of file dimacs_cnf.cpp.

◆ write_problem_line()

void dimacs_cnft::write_problem_line ( std::ostream &  out)
protected

Definition at line 46 of file dimacs_cnf.cpp.

Member Data Documentation

◆ break_lines

bool dimacs_cnft::break_lines
protected

Definition at line 42 of file dimacs_cnf.h.

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