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improve diagnostics for flips

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This commit is contained in:
Nikolaj Bjorner 2025-01-22 11:15:02 -08:00
parent 72c7a9cf6a
commit 4fce314bf2
2 changed files with 20 additions and 11 deletions
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29
src/ast/sls/sls_arith_clausal.cpp
View file

@ -36,7 +36,6 @@ namespace sls {
template<typename num_t>
void arith_clausal<num_t>::search() {
num_t delta;
initialize();
@ -52,6 +51,8 @@ namespace sls {
unsigned vars_in_unsat = ctx.unsat_vars().size();
unsigned ext_in_unsat = ctx.num_external_in_unsat_vars();
unsigned bool_in_unsat = vars_in_unsat - ext_in_unsat;
sat::bool_var bv = sat::null_bool_var;
var_t v = null_arith_var;
bool time_up_bool = m_no_improve_bool * vars_in_unsat > 5 * bool_in_unsat;
bool time_up_arith = m_no_improve_arith * vars_in_unsat > 20 * ext_in_unsat;
if ((m_bool_mode && bool_in_unsat < vars_in_unsat && time_up_bool) || bool_in_unsat == 0)
@ -59,27 +60,33 @@ namespace sls {
else if ((!m_bool_mode && bool_in_unsat > 0 && time_up_arith) || vars_in_unsat == bool_in_unsat)
enter_bool_mode();
if (m_bool_mode) {
sat::bool_var v = ctx.bool_flip();
TRACE("arith", tout << "bool flip v:" << v << "\n";
tout << "unsat-vars " << vars_in_unsat << "\n";
tout << "bools: " << bool_in_unsat << " timeup-bool " << time_up_bool << "\n";
tout << "no-improve bool: " << m_no_improve_bool << "\n";
tout << "ext: " << ext_in_unsat << " timeup-arith " << time_up_arith << "\n";);
bv = ctx.bool_flip();
m_no_improve_bool = update_outer_best_solution() ? 0 : m_no_improve_bool + 1;
}
else {
move_arith_variable();
v = move_arith_variable();
m_no_improve_arith = update_inner_best_solution() ? 0 : m_no_improve_arith + 1;
}
m_no_improve = update_best_solution() ? 0 : m_no_improve + 1;
TRACE("arith",
if (bv != sat::null_bool_var) tout << "bool flip " << bv << "\n";
else if (v != null_arith_var) tout << "arith flip v" << v << "\n";
else tout << "no flip\n";
tout << "unsat-vars " << vars_in_unsat << "\n";
tout << "bools: " << bool_in_unsat << " timeup-bool " << time_up_bool << "\n";
tout << "no-improve bool: " << m_no_improve_bool << "\n";
tout << "no-improve arith: " << m_no_improve_arith << "\n";
tout << "ext: " << ext_in_unsat << " timeup-arith " << time_up_arith << "\n";
);
}
if (a.m_stats.m_steps >= a.m_config.max_moves)
a.m_config.max_moves_base += 100;
}
template<typename num_t>
void arith_clausal<num_t>::move_arith_variable() {
var_t arith_clausal<num_t>::move_arith_variable() {
var_t v = null_arith_var;
@ -107,6 +114,8 @@ namespace sls {
add_lookahead_on_unsat_vars();
v = random_move_on_updates();
}
return v;
}
template<typename num_t>

2
src/ast/sls/sls_arith_clausal.h
View file

@ -54,7 +54,7 @@ namespace sls {
bool update_outer_best_solution();
bool update_inner_best_solution();
bool update_best_solution();
void move_arith_variable();
var_t move_arith_variable();
var_t critical_move_on_updates(move_t mt);
var_t random_move_on_updates();
void add_lookahead_on_unsat_vars();