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re-enable fixed tabu

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2025-01-05 11:49:12 -08:00
parent 6b17862886
commit f6e3c5ae79
4 changed files with 13 additions and 9 deletions
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2
src/ast/sls/sls_bv_fixed.cpp
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@ -30,7 +30,7 @@ namespace sls {
void bv_fixed::init() {
return;
//return;
for (auto e : ctx.subterms())
set_fixed(e);

13
src/ast/sls/sls_bv_lookahead.cpp
View file

@ -318,8 +318,9 @@ namespace sls {
m_config.ucb_forget = p.walksat_ucb_forget();
m_config.ucb_init = p.walksat_ucb_init();
m_config.ucb_noise = p.walksat_ucb_noise();
m_config.use_top_level_assertions = p.use_top_level_assertions_bv();
m_config.use_lookahead_bv = p.use_lookahead_bv();
m_config.use_top_level_assertions = p.bv_use_top_level_assertions();
m_config.use_lookahead_bv = p.bv_use_lookahead();
m_config.allow_rotation = p.bv_allow_rotation();
}
/**
@ -659,13 +660,13 @@ namespace sls {
;
else if (allow_costly_flips(mt))
ctx.flip(v);
else if (true) {
sat::bool_var_set rotated;
else if (m_config.allow_rotation) {
m_rotated.reset();
unsigned budget = 100;
bool rot = ctx.try_rotate(v, rotated, budget);
bool rot = ctx.try_rotate(v, m_rotated, budget);
if (rot)
++m_stats.m_rotations;
CTRACE("bv", rot, tout << "rotated: " << rotated << "\n";);
CTRACE("bv", rot, tout << "rotated: " << m_rotated << "\n";);
}
}
}

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

@ -48,6 +48,7 @@ namespace sls {
double ucb_noise = 0.1;
bool use_top_level_assertions = true;
bool use_lookahead_bv = true;
bool allow_rotation = true;
};
struct stats {
@ -83,6 +84,7 @@ namespace sls {
vector<bool_info> m_bool_info;
expr_mark m_is_root;
unsigned m_touched = 1;
sat::bool_var_set m_rotated;
std::ostream& display_weights(std::ostream& out);

5
src/params/sls_params.pyg
View file

@ -25,7 +25,8 @@ def_module_params('sls',
('dt_axiomatic', BOOL, True, 'use axiomatic mode or model reduction for datatype solver'),
('track_unsat', BOOL, 0, 'keep a list of unsat assertions as done in SAT - currently disabled internally'),
('random_seed', UINT, 0, 'random seed'),
('use_top_level_assertions_bv', BOOL, False, 'use top-level assertions for BV lookahead solver'),
('use_lookahead_bv', BOOL, True, 'use lookahead solver for BV'),
('bv_use_top_level_assertions', BOOL, False, 'use top-level assertions for BV lookahead solver'),
('bv_use_lookahead', BOOL, True, 'use lookahead solver for BV'),
('bv_allow_rotation', BOOL, True, 'allow model rotation when repairing literal assignment'),
('str_update_strategy', UINT, 1, 'string update candidate selection: 0 - single character based update, 1 - subsequence based update')
))