/****************************************************************************************[solver.h]
Copyright (c) 2008, Niklas Sorensson
2008, Koen Claessen
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
associated documentation files (the "Software"), to deal in the Software without restriction,
including without limitation the rights to use, copy, modify, merge, publish, distribute,
sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or
substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT
OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
**************************************************************************************************/
#ifndef ABC__sat__lsat__solver_h
#define ABC__sat__lsat__solver_h
ABC_NAMESPACE_HEADER_START
// SolverTypes:
//
typedef struct solver_t solver;
typedef int solver_Var;
typedef int solver_Lit;
typedef int solver_lbool;
// Constants: (can these be made inline-able?)
//
extern const solver_lbool solver_l_True;
extern const solver_lbool solver_l_False;
extern const solver_lbool solver_l_Undef;
solver* solver_new (void);
void solver_delete (solver* s);
solver_Var solver_newVar (solver *s);
solver_Lit solver_newLit (solver *s);
solver_Lit solver_mkLit (solver_Var x);
solver_Lit solver_mkLit_args (solver_Var x, int sign);
solver_Lit solver_negate (solver_Lit p);
solver_Var solver_var (solver_Lit p);
int solver_sign (solver_Lit p);
int solver_addClause (solver *s, int len, solver_Lit *ps);
void solver_addClause_begin (solver *s);
void solver_addClause_addLit(solver *s, solver_Lit p);
int solver_addClause_commit(solver *s);
int solver_simplify (solver *s);
int solver_solve (solver *s, int len, solver_Lit *ps);
void solver_solve_begin (solver *s);
void solver_solve_addLit (solver *s, solver_Lit p);
int solver_solve_commit (solver *s);
int solver_okay (solver *s);
void solver_setPolarity (solver *s, solver_Var v, int b);
void solver_setDecisionVar (solver *s, solver_Var v, int b);
solver_lbool solver_get_l_True (void);
solver_lbool solver_get_l_False (void);
solver_lbool solver_get_l_Undef (void);
solver_lbool solver_value_Var (solver *s, solver_Var x);
solver_lbool solver_value_Lit (solver *s, solver_Lit p);
solver_lbool solver_modelValue_Var (solver *s, solver_Var x);
solver_lbool solver_modelValue_Lit (solver *s, solver_Lit p);
int solver_num_assigns (solver *s);
int solver_num_clauses (solver *s);
int solver_num_learnts (solver *s);
int solver_num_vars (solver *s);
int solver_num_freeVars (solver *s);
int solver_conflict_len (solver *s);
solver_Lit solver_conflict_nthLit (solver *s, int i);
// Setters:
void solver_set_verbosity (solver *s, int v);
// Getters:
int solver_num_conflicts (solver *s);
/* TODO
// Mode of operation:
//
int verbosity;
double var_decay;
double clause_decay;
double random_var_freq;
double random_seed;
double restart_luby_start; // The factor with which the values of the luby sequence is multiplied to get the restart (default 100)
double restart_luby_inc; // The constant that the luby sequence uses powers of (default 2)
int expensive_ccmin; // FIXME: describe.
int rnd_pol; // FIXME: describe.
int restart_first; // The initial restart limit. (default 100)
double restart_inc; // The factor with which the restart limit is multiplied in each restart. (default 1.5)
double learntsize_factor; // The intitial limit for learnt clauses is a factor of the original clauses. (default 1 / 3)
double learntsize_inc; // The limit for learnt clauses is multiplied with this factor each restart. (default 1.1)
int learntsize_adjust_start_confl;
double learntsize_adjust_inc;
// Statistics: (read-only member variable)
//
uint64_t starts, decisions, rnd_decisions, propagations, conflicts;
uint64_t dec_vars, clauses_literals, learnts_literals, max_literals, tot_literals;
*/
ABC_NAMESPACE_HEADER_END
#endif