mirror of
https://github.com/Z3Prover/z3
synced 2025-08-08 12:11:23 +00:00
plenty of new stuff
This commit is contained in:
Andreas Froehlich
Christoph M. Wintersteiger
parent
b002697e03
commit
e310ab5cd7
8 changed files with 1235 additions and 108 deletions
|
|
@ -34,6 +34,9 @@ class sls_evaluator {
|
|||
powers & m_powers;
|
||||
expr_ref_buffer m_temp_exprs;
|
||||
vector<ptr_vector<expr> > m_traversal_stack;
|
||||
#if _EARLY_PRUNE_
|
||||
vector<ptr_vector<expr> > m_traversal_stack_bool;
|
||||
#endif
|
||||
|
||||
public:
|
||||
sls_evaluator(ast_manager & m, bv_util & bvu, sls_tracker & t, unsynch_mpz_manager & mm, powers & p) :
|
||||
|
|
@ -519,11 +522,15 @@ public:
|
|||
}
|
||||
}
|
||||
|
||||
void run_update(unsigned cur_depth) {
|
||||
void run_serious_update(unsigned cur_depth) {
|
||||
// precondition: m_traversal_stack contains the entry point(s)
|
||||
expr_fast_mark1 visited;
|
||||
mpz new_value;
|
||||
|
||||
#if _EARLY_PRUNE_ || _CACHE_TOP_SCORE_
|
||||
double new_score;
|
||||
#endif
|
||||
|
||||
SASSERT(cur_depth < m_traversal_stack.size());
|
||||
while (cur_depth != static_cast<unsigned>(-1)) {
|
||||
ptr_vector<expr> & cur_depth_exprs = m_traversal_stack[cur_depth];
|
||||
|
|
@ -533,8 +540,92 @@ public:
|
|||
|
||||
(*this)(to_app(cur), new_value);
|
||||
m_tracker.set_value(cur, new_value);
|
||||
m_tracker.set_score(cur, m_tracker.score(cur));
|
||||
|
||||
#if _REAL_RS_ || _REAL_PBFS_
|
||||
if (!m_tracker.has_uplinks(cur))
|
||||
{
|
||||
if (m_mpz_manager.eq(new_value,m_one))
|
||||
m_tracker.make_assertion(cur);
|
||||
else
|
||||
m_tracker.break_assertion(cur);
|
||||
}
|
||||
#endif
|
||||
|
||||
#if _EARLY_PRUNE_
|
||||
new_score = m_tracker.score(cur);
|
||||
#if _CACHE_TOP_SCORE_
|
||||
if (!m_tracker.has_uplinks(cur))
|
||||
m_tracker.adapt_top_sum(new_score, m_tracker.get_score(cur));
|
||||
#endif
|
||||
m_tracker.set_score(cur, new_score);
|
||||
m_tracker.set_score_prune(cur, new_score);
|
||||
#else
|
||||
#if _CACHE_TOP_SCORE_
|
||||
new_score = m_tracker.score(cur);
|
||||
if (!m_tracker.has_uplinks(cur))
|
||||
m_tracker.adapt_top_sum(new_score, m_tracker.get_score(cur));
|
||||
m_tracker.set_score(cur, new_score);
|
||||
#else
|
||||
m_tracker.set_score(cur, m_tracker.score(cur));
|
||||
#endif
|
||||
#endif
|
||||
if (m_tracker.has_uplinks(cur)) {
|
||||
ptr_vector<expr> & ups = m_tracker.get_uplinks(cur);
|
||||
for (unsigned j = 0; j < ups.size(); j++) {
|
||||
expr * next = ups[j];
|
||||
unsigned next_d = m_tracker.get_distance(next);
|
||||
SASSERT(next_d < cur_depth);
|
||||
if (!visited.is_marked(next)) {
|
||||
m_traversal_stack[next_d].push_back(next);
|
||||
visited.mark(next);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
cur_depth_exprs.reset();
|
||||
cur_depth--;
|
||||
}
|
||||
|
||||
m_mpz_manager.del(new_value);
|
||||
}
|
||||
|
||||
void run_update(unsigned cur_depth) {
|
||||
// precondition: m_traversal_stack contains the entry point(s)
|
||||
expr_fast_mark1 visited;
|
||||
mpz new_value;
|
||||
|
||||
#if _EARLY_PRUNE_ || _CACHE_TOP_SCORE_
|
||||
double new_score;
|
||||
#endif
|
||||
|
||||
SASSERT(cur_depth < m_traversal_stack.size());
|
||||
while (cur_depth != static_cast<unsigned>(-1)) {
|
||||
ptr_vector<expr> & cur_depth_exprs = m_traversal_stack[cur_depth];
|
||||
|
||||
for (unsigned i = 0; i < cur_depth_exprs.size(); i++) {
|
||||
expr * cur = cur_depth_exprs[i];
|
||||
|
||||
(*this)(to_app(cur), new_value);
|
||||
m_tracker.set_value(cur, new_value);
|
||||
#if _EARLY_PRUNE_
|
||||
new_score = m_tracker.score(cur);
|
||||
#if _CACHE_TOP_SCORE_
|
||||
if (!m_tracker.has_uplinks(cur))
|
||||
m_tracker.adapt_top_sum(new_score, m_tracker.get_score(cur));
|
||||
#endif
|
||||
m_tracker.set_score(cur, new_score);
|
||||
m_tracker.set_score_prune(cur, new_score);
|
||||
#else
|
||||
#if _CACHE_TOP_SCORE_
|
||||
new_score = m_tracker.score(cur);
|
||||
if (!m_tracker.has_uplinks(cur))
|
||||
m_tracker.adapt_top_sum(new_score, m_tracker.get_score(cur));
|
||||
m_tracker.set_score(cur, new_score);
|
||||
#else
|
||||
m_tracker.set_score(cur, m_tracker.score(cur));
|
||||
#endif
|
||||
#endif
|
||||
if (m_tracker.has_uplinks(cur)) {
|
||||
ptr_vector<expr> & ups = m_tracker.get_uplinks(cur);
|
||||
for (unsigned j = 0; j < ups.size(); j++) {
|
||||
|
|
@ -569,8 +660,11 @@ public:
|
|||
m_traversal_stack[cur_depth].push_back(ep);
|
||||
if (cur_depth > max_depth) max_depth = cur_depth;
|
||||
}
|
||||
|
||||
#if _REAL_RS_ || _REAL_PBFS_
|
||||
run_serious_update(max_depth);
|
||||
#else
|
||||
run_update(max_depth);
|
||||
#endif
|
||||
}
|
||||
|
||||
void update(func_decl * fd, const mpz & new_value) {
|
||||
|
|
@ -584,6 +678,196 @@ public:
|
|||
run_update(cur_depth);
|
||||
}
|
||||
|
||||
void serious_update(func_decl * fd, const mpz & new_value) {
|
||||
m_tracker.set_value(fd, new_value);
|
||||
expr * ep = m_tracker.get_entry_point(fd);
|
||||
unsigned cur_depth = m_tracker.get_distance(ep);
|
||||
if (m_traversal_stack.size() <= cur_depth)
|
||||
m_traversal_stack.resize(cur_depth+1);
|
||||
m_traversal_stack[cur_depth].push_back(ep);
|
||||
|
||||
run_serious_update(cur_depth);
|
||||
}
|
||||
|
||||
#if _EARLY_PRUNE_
|
||||
unsigned run_update_bool_prune(unsigned cur_depth) {
|
||||
expr_fast_mark1 visited;
|
||||
|
||||
double prune_score, new_score;
|
||||
unsigned pot_benefits = 0;
|
||||
SASSERT(cur_depth < m_traversal_stack_bool.size());
|
||||
|
||||
ptr_vector<expr> & cur_depth_exprs = m_traversal_stack_bool[cur_depth];
|
||||
|
||||
for (unsigned i = 0; i < cur_depth_exprs.size(); i++) {
|
||||
expr * cur = cur_depth_exprs[i];
|
||||
|
||||
new_score = m_tracker.score(cur);
|
||||
#if _CACHE_TOP_SCORE_
|
||||
if (!m_tracker.has_uplinks(cur))
|
||||
m_tracker.adapt_top_sum(new_score, m_tracker.get_score(cur));
|
||||
#endif
|
||||
prune_score = m_tracker.get_score_prune(cur);
|
||||
m_tracker.set_score(cur, new_score);
|
||||
|
||||
if ((new_score > prune_score) && (m_tracker.has_pos_occ(cur)))
|
||||
pot_benefits = 1;
|
||||
if ((new_score <= prune_score) && (m_tracker.has_neg_occ(cur)))
|
||||
pot_benefits = 1;
|
||||
|
||||
if (m_tracker.has_uplinks(cur)) {
|
||||
ptr_vector<expr> & ups = m_tracker.get_uplinks(cur);
|
||||
for (unsigned j = 0; j < ups.size(); j++) {
|
||||
expr * next = ups[j];
|
||||
unsigned next_d = m_tracker.get_distance(next);
|
||||
SASSERT(next_d < cur_depth);
|
||||
if (!visited.is_marked(next)) {
|
||||
m_traversal_stack_bool[next_d].push_back(next);
|
||||
visited.mark(next);
|
||||
}
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
}
|
||||
}
|
||||
|
||||
cur_depth_exprs.reset();
|
||||
cur_depth--;
|
||||
|
||||
while (cur_depth != static_cast<unsigned>(-1)) {
|
||||
ptr_vector<expr> & cur_depth_exprs = m_traversal_stack_bool[cur_depth];
|
||||
if (pot_benefits)
|
||||
{
|
||||
unsigned cur_size = cur_depth_exprs.size();
|
||||
for (unsigned i = 0; i < cur_size; i++) {
|
||||
expr * cur = cur_depth_exprs[i];
|
||||
|
||||
#if _CACHE_TOP_SCORE_
|
||||
new_score = m_tracker.score(cur);
|
||||
if (!m_tracker.has_uplinks(cur))
|
||||
m_tracker.adapt_top_sum(new_score, m_tracker.get_score(cur));
|
||||
m_tracker.set_score(cur, new_score);
|
||||
#else
|
||||
m_tracker.set_score(cur, m_tracker.score(cur));
|
||||
#endif
|
||||
if (m_tracker.has_uplinks(cur)) {
|
||||
ptr_vector<expr> & ups = m_tracker.get_uplinks(cur);
|
||||
for (unsigned j = 0; j < ups.size(); j++) {
|
||||
expr * next = ups[j];
|
||||
unsigned next_d = m_tracker.get_distance(next);
|
||||
SASSERT(next_d < cur_depth);
|
||||
if (!visited.is_marked(next)) {
|
||||
m_traversal_stack_bool[next_d].push_back(next);
|
||||
visited.mark(next);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
cur_depth_exprs.reset();
|
||||
cur_depth--;
|
||||
}
|
||||
|
||||
return pot_benefits;
|
||||
}
|
||||
|
||||
void run_update_prune(unsigned max_depth) {
|
||||
// precondition: m_traversal_stack contains the entry point(s)
|
||||
expr_fast_mark1 visited;
|
||||
mpz new_value;
|
||||
|
||||
unsigned cur_depth = max_depth;
|
||||
SASSERT(cur_depth < m_traversal_stack.size());
|
||||
while (cur_depth != static_cast<unsigned>(-1)) {
|
||||
ptr_vector<expr> & cur_depth_exprs = m_traversal_stack[cur_depth];
|
||||
|
||||
for (unsigned i = 0; i < cur_depth_exprs.size(); i++) {
|
||||
expr * cur = cur_depth_exprs[i];
|
||||
|
||||
(*this)(to_app(cur), new_value);
|
||||
m_tracker.set_value(cur, new_value);
|
||||
// should always have uplinks ...
|
||||
if (m_tracker.has_uplinks(cur)) {
|
||||
ptr_vector<expr> & ups = m_tracker.get_uplinks(cur);
|
||||
for (unsigned j = 0; j < ups.size(); j++) {
|
||||
expr * next = ups[j];
|
||||
unsigned next_d = m_tracker.get_distance(next);
|
||||
SASSERT(next_d < cur_depth);
|
||||
if (!visited.is_marked(next)) {
|
||||
if (m_manager.is_bool(next))
|
||||
m_traversal_stack_bool[max_depth].push_back(next);
|
||||
else
|
||||
m_traversal_stack[next_d].push_back(next);
|
||||
visited.mark(next);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
cur_depth_exprs.reset();
|
||||
cur_depth--;
|
||||
}
|
||||
|
||||
m_mpz_manager.del(new_value);
|
||||
}
|
||||
|
||||
unsigned update_prune(func_decl * fd, const mpz & new_value) {
|
||||
m_tracker.set_value(fd, new_value);
|
||||
expr * ep = m_tracker.get_entry_point(fd);
|
||||
unsigned cur_depth = m_tracker.get_distance(ep);
|
||||
|
||||
if (m_traversal_stack_bool.size() <= cur_depth)
|
||||
m_traversal_stack_bool.resize(cur_depth+1);
|
||||
if (m_traversal_stack.size() <= cur_depth)
|
||||
m_traversal_stack.resize(cur_depth+1);
|
||||
|
||||
if (m_manager.is_bool(ep))
|
||||
m_traversal_stack_bool[cur_depth].push_back(ep);
|
||||
else
|
||||
{
|
||||
m_traversal_stack[cur_depth].push_back(ep);
|
||||
run_update_prune(cur_depth);
|
||||
}
|
||||
return run_update_bool_prune(cur_depth);
|
||||
}
|
||||
#endif
|
||||
|
||||
void randomize_local(expr * e, unsigned int flip) {
|
||||
ptr_vector<func_decl> & unsat_constants = m_tracker.get_constants(e);
|
||||
|
||||
// Randomize _one_ candidate:
|
||||
unsigned r = m_tracker.get_random_uint(16) % unsat_constants.size();
|
||||
func_decl * fd = unsat_constants[r];
|
||||
#if _PERC_CHANGE_
|
||||
sort * srt = fd->get_range();
|
||||
mpz temp;
|
||||
|
||||
if (m_manager.is_bool(srt))
|
||||
m_mpz_manager.set(temp, (m_mpz_manager.is_zero(m_tracker.get_value(fd))) ? m_one : m_zero);
|
||||
else
|
||||
{
|
||||
mpz temp2, mask;
|
||||
unsigned bv_sz = m_bv_util.get_bv_size(srt);
|
||||
m_mpz_manager.set(temp, m_tracker.get_value(fd));
|
||||
|
||||
for (unsigned bit = 0; bit < bv_sz; bit++)
|
||||
if (m_tracker.get_random_uint(16) % 100 < _PERC_CHANGE_)
|
||||
{
|
||||
m_mpz_manager.set(mask, m_powers(bit));
|
||||
m_mpz_manager.bitwise_xor(temp, mask, temp2);
|
||||
m_mpz_manager.set(temp, temp2);
|
||||
}
|
||||
m_mpz_manager.del(mask);
|
||||
m_mpz_manager.del(temp2);
|
||||
}
|
||||
#else
|
||||
mpz temp = m_tracker.get_random(fd->get_range());
|
||||
#endif
|
||||
update(fd, temp);
|
||||
m_mpz_manager.del(temp);
|
||||
}
|
||||
|
||||
void randomize_local(goal_ref const & g, unsigned int flip) {
|
||||
ptr_vector<func_decl> & unsat_constants = m_tracker.get_unsat_constants(g, flip);
|
||||
|
||||
|
|
@ -603,8 +887,37 @@ public:
|
|||
// Randomize _one_ candidate:
|
||||
unsigned r = m_tracker.get_random_uint(16) % unsat_constants.size();
|
||||
func_decl * fd = unsat_constants[r];
|
||||
mpz temp = m_tracker.get_random(fd->get_range());
|
||||
update(fd, temp);
|
||||
#if _PERC_CHANGE_
|
||||
sort * srt = fd->get_range();
|
||||
mpz temp;
|
||||
|
||||
if (m_manager.is_bool(srt))
|
||||
m_mpz_manager.set(temp, (m_mpz_manager.is_zero(m_tracker.get_value(fd))) ? m_one : m_zero);
|
||||
else
|
||||
{
|
||||
mpz temp2, mask;
|
||||
unsigned bv_sz = m_bv_util.get_bv_size(srt);
|
||||
m_mpz_manager.set(temp, m_tracker.get_value(fd));
|
||||
|
||||
for (unsigned bit = 0; bit < bv_sz; bit++)
|
||||
if (m_tracker.get_random_uint(16) % 100 < _PERC_CHANGE_)
|
||||
{
|
||||
m_mpz_manager.set(mask, m_powers(bit));
|
||||
m_mpz_manager.bitwise_xor(temp, mask, temp2);
|
||||
m_mpz_manager.set(temp, temp2);
|
||||
}
|
||||
m_mpz_manager.del(mask);
|
||||
m_mpz_manager.del(temp2);
|
||||
}
|
||||
#else
|
||||
mpz temp = m_tracker.get_random(fd->get_range());
|
||||
#endif
|
||||
|
||||
#if _REAL_RS_ || _REAL_PBFS_
|
||||
serious_update(fd, temp);
|
||||
#else
|
||||
update(fd, temp);
|
||||
#endif
|
||||
m_mpz_manager.del(temp);
|
||||
|
||||
TRACE("sls", /*tout << "Randomization candidates: ";
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue