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initial pass

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-02-22 14:57:25 -08:00
parent 748ada2acc
commit 43ddad0ecd
5 changed files with 139 additions and 148 deletions
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19
src/sat/sat_local_search.h
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@ -42,9 +42,6 @@ namespace sat {
//int coefficient; // all constraints are cardinality: coefficient=1
};
// parameters of the instance
unsigned num_vars; // var index from 1 to num_vars
unsigned num_constraints; // constraint index from 1 to num_constraint
// objective function: maximize
svector<ob_term> ob_constraint; // the objective function *constraint*, sorted in decending order
@ -53,6 +50,11 @@ namespace sat {
// terms arrays
vector<svector<term> > var_term; // var_term[i][j] means the j'th term of var i
vector<svector<term> > constraint_term; // constraint_term[i][j] means the j'th term of constraint i
// parameters of the instance
unsigned num_vars() const { return var_term.size(); } // var index from 1 to num_vars
unsigned num_constraints() const { return constraint_term.size(); } // constraint index from 1 to num_constraint
// information about the variable
int_vector coefficient_in_ob_constraint; // initialized to be 0
@ -62,7 +64,7 @@ namespace sat {
int_vector time_stamp; // the flip time stamp
bool_vector conf_change; // whether its configure changes since its last flip
int_vector cscc; // how many times its constraint state configure changes since its last flip
vector<int_vector> var_neighbor; // all of its neighborhoods variable
vector<bool_var_vector> var_neighbor; // all of its neighborhoods variable
/* TBD: other scores */
// information about the constraints
@ -94,10 +96,12 @@ namespace sat {
// for tuning
int s_id = 0; // strategy id
void init();
void init_orig();
void init_greedy();
void reinit();
void reinit_orig();
void reinit_greedy();
void init_cur_solution();
void init_slack();
@ -124,7 +128,6 @@ namespace sat {
void add_clause(unsigned sz, literal const* c);
void add_cardinality(unsigned sz, literal const* c, unsigned k);
// swap the deleted one with the last one and pop
void sat(int c) {
@ -141,6 +144,8 @@ namespace sat {
~local_search();
void add_soft(literal l, double weight);
void add_cardinality(unsigned sz, literal const* c, unsigned k);
lbool operator()();