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add some debug prints and impelement internal polynomial fix

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This commit is contained in:
Ilana Shapiro 2025-08-11 10:56:52 -07:00
parent 8493c309ab
commit 6b3b8accd1
2 changed files with 31 additions and 11 deletions
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3
src/math/polynomial/polynomial.cpp
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@ -5153,6 +5153,8 @@ namespace polynomial {
//
unsigned sz = R->size();
for (unsigned i = 0; i < sz; i++) {
if (sz > 100 && i % 100 == 0)
checkpoint();
monomial * m = R->m(i);
numeral const & a = R->a(i);
if (m->degree_of(x) == deg_R) {
@ -5571,6 +5573,7 @@ namespace polynomial {
h = mk_one();
while (true) {
checkpoint();
TRACE(resultant, tout << "A: " << A << "\nB: " << B << "\n";);
degA = degree(A, x);
degB = degree(B, x);

39
src/smt/smt_parallel.cpp
View file

@ -43,7 +43,7 @@ namespace smt {
void parallel::worker::run() {
ast_translation g2l(p.ctx.m, m); // global to local context -- MUST USE p.ctx.m, not ctx->m, AS GLOBAL MANAGER!!!
ast_translation l2g(m, p.ctx.m); // local to global context
while (m.inc()) {
while (m.inc()) { // inc: increase the limit and check if it is canceled, vs m.limit().is_canceled() is readonly. the .limit() is also not necessary (m.inc() etc provides a convenience wrapper)
IF_VERBOSE(0, verbose_stream() << "Worker " << id << " checking cubes\n");
vector<expr_ref_vector> cubes;
b.get_cubes(g2l, cubes);
@ -52,10 +52,17 @@ namespace smt {
for (auto& cube : cubes) {
if (!m.inc()) {
b.set_exception("context cancelled");
return; // stop if the main context (i.e. parent thread) is cancelled
return;
}
switch (check_cube(cube)) {
IF_VERBOSE(0, verbose_stream() << "Processing cube: " << mk_bounded_pp(mk_and(cube), m, 3) << "\n");
lbool r = check_cube(cube);
if (m.limit().is_canceled()) {
IF_VERBOSE(0, verbose_stream() << "Worker " << id << " context cancelled\n");
return;
}
switch (r) {
case l_undef: {
IF_VERBOSE(0, verbose_stream() << "Worker " << id << " found undef cube\n");
// return unprocessed cubes to the batch manager
// add a split literal to the batch manager.
// optionally process other cubes and delay sending back unprocessed cubes to batch manager.
@ -66,7 +73,7 @@ namespace smt {
break;
}
case l_true: {
IF_VERBOSE(0, verbose_stream() << "Worker " << id << " found sat cube: " << mk_and(cube) << "\n");
IF_VERBOSE(0, verbose_stream() << "Worker " << id << " found sat cube\n");
model_ref mdl;
ctx->get_model(mdl);
b.set_sat(l2g, *mdl);
@ -87,7 +94,7 @@ namespace smt {
}
// TODO: can share lemmas here, such as new units and not(and(unsat_core)), binary clauses, etc.
// TODO: remember assumptions used in core so that they get used for the final core.
IF_VERBOSE(0, verbose_stream() << "Worker " << id << " found unsat cube: " << mk_pp(mk_and(cube), m) << "\n");
IF_VERBOSE(0, verbose_stream() << "Worker " << id << " found unsat cube\n");
b.share_lemma(l2g, mk_not(mk_and(unsat_core)));
// share_units();
break;
@ -164,6 +171,7 @@ namespace smt {
// THERE IS AN EDGE CASE: IF ALL THE CUBES ARE UNSAT, BUT DEPEND ON NONEMPTY ASSUMPTIONS, NEED TO TAKE THE UNION OF THESE ASMS WHEN LEARNING FROM UNSAT CORE
// DON'T CODE THIS CASE YET: WE ARE JUST TESTING WITH EMPTY ASMS FOR NOW (I.E. WE ARE NOT PASSING IN ASMS). THIS DOES NOT APPLY TO THE INTERNAL "LEARNED" UNSAT CORE
lbool parallel::worker::check_cube(expr_ref_vector const& cube) {
IF_VERBOSE(0, verbose_stream() << "Worker " << id << " checking cube\n";);
for (auto& atom : cube)
asms.push_back(atom);
lbool r = l_undef;
@ -180,6 +188,7 @@ namespace smt {
b.set_exception("unknown exception");
}
asms.shrink(asms.size() - cube.size());
IF_VERBOSE(0, verbose_stream() << "Worker " << id << " DONE checking cube\n";);
return r;
}
@ -216,7 +225,9 @@ namespace smt {
if (m_state != state::is_running)
return;
m_state = state::is_unsat;
p.ctx.m_unsat_core.reset();
p.ctx.m_unsat_core.reset(); // need to reset the unsat core in the main context bc every time we do a check_sat call, don't want to have old info coming from a prev check_sat call
// actually, it gets reset internally in the context after each check_sat, so we don't need to do it here -- replace with assertion
// takeaway: each call to check_sat needs to have a fresh unsat core
for (expr* e : unsat_core)
p.ctx.m_unsat_core.push_back(l2g(e));
cancel_workers();
@ -341,8 +352,8 @@ namespace smt {
for (auto& atom : c)
g_cube.push_back(l2g(atom));
unsigned start = m_cubes.size();
m_cubes.push_back(g_cube); // continuously update the start idx so we're just processing the single most recent cube
unsigned start = m_cubes.size(); // continuously update the start idx so we're just processing the single most recent cube
m_cubes.push_back(g_cube);
if (greedy_mode) {
// Split new cube all existing m_split_atoms (i.e. A_batch) that aren't already in the cube
@ -369,7 +380,7 @@ namespace smt {
continue;
m_split_atoms.push_back(g_atom);
add_split_atom(g_atom, 0);
add_split_atom(g_atom, 0); // split ALL cubes on the atom
if (m_cubes.size() > max_cubes) {
greedy_mode = false;
++a_worker_start_idx; // Record where to start processing the remaining atoms for frugal processing, so there's no redundant splitting
@ -378,6 +389,11 @@ namespace smt {
}
}
if (m.limit().is_canceled()) {
IF_VERBOSE(0, verbose_stream() << "Batch manager: no cubes to process, returning\n");
return;
}
// --- Phase 3: Frugal fallback ---
if (!greedy_mode) {
// Split only cubes added in *this call* on the new A_worker atoms (starting where we left off from the initial greedy phase)
@ -385,7 +401,7 @@ namespace smt {
expr_ref g_atom(l2g(A_worker[i]), l2g.to());
if (!m_split_atoms.contains(g_atom))
m_split_atoms.push_back(g_atom);
add_split_atom(g_atom, initial_m_cubes_size); // start from the initial size of m_cubes to ONLY split the NEW worker cubes
add_split_atom(g_atom, initial_m_cubes_size); // start from the initial size of m_cubes (splits ALL the new worker cubes, and whatever old ones were processed in the greedy phase). this is somewhat wasteful to process the old one, but keep for now
}
}
}
@ -440,6 +456,7 @@ namespace smt {
// within the lexical scope of the code block, creates a data structure that allows you to push children
// objects to the limit object, so if someone cancels the parent object, the cancellation propagates to the children
// and that cancellation has the lifetime of the scope
// even if this code doesn't expliclty kill the main thread, still applies bc if you e.g. Ctrl+C the main thread, the children threads need to be cancelled
for (auto w : m_workers)
sl.push_child(&(w->limit()));
@ -455,7 +472,7 @@ namespace smt {
for (auto& th : threads)
th.join();
for (auto w : m_workers)
for (auto w : m_workers)
w->collect_statistics(ctx.m_aux_stats);
}