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This commit is contained in:
Ilana Shapiro 2025-09-02 19:28:29 -07:00
parent f243963927
commit a7c948088a
1 changed files with 5 additions and 10 deletions
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15
src/smt/smt_parallel.cpp
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@ -49,7 +49,7 @@ namespace smt {
return ctx->m_stats.m_num_decisions / std::max(1u, ctx->m_stats.m_num_conflicts);
}
double parallel::worker::explicit_hardness(expr_ref_vector const& cube, unsigned initial_scope_lvl) {
double parallel::worker::explicit_hardness(expr_ref_vector const& cube) {
double total = 0.0;
unsigned clause_count = 0;
LOG_WORKER(1, " CUBE SIZE IN EXPLICIT HARDNESS: " << cube.size() << "\n");
@ -73,16 +73,12 @@ namespace smt {
for (literal l : clause) {
bool_var v = l.var();
// Only consider literals that are part of the cube
LOG_WORKER(1, " Cube contains " << v << ": " << (cube_vars.contains(v)) << "\n");
if (!cube_vars.contains(v)) continue;
lbool val = ctx->get_assignment(l);
unsigned lvl = ctx->get_assign_level(l);
// Only include assignments made after the base scope level (i.e. those made by specifically assuming the cube)
LOG_WORKER(1, " Literal " << l << " at level " << lvl << " is equal or below scope level " << initial_scope_lvl << ": " << bool(lvl <= initial_scope_lvl) << "\n");
if (lvl <= initial_scope_lvl) continue;
LOG_WORKER(1, " Literal " << l << " at level " << lvl << " is equal or below scope level " << ctx->get_search_level() << ": " << bool(lvl <= initial_scope_lvl) << "\n");
if (lvl <= ctx->get_search_level()) continue;
sz++;
if (val == l_true) { satisfied = true; break; }
@ -92,6 +88,7 @@ namespace smt {
if (satisfied || sz == 0) continue;
double m = static_cast<double>(sz) / std::max(1u, sz - n_false);
// or 1/2^(size of clause)
LOG_WORKER(1, " Clause contributes " << m << " to hardness metric\n");
total += m;
clause_count++;
@ -247,8 +244,6 @@ namespace smt {
return;
}
LOG_WORKER(1, " checking cube\n");
unsigned initial_scope_lvl = ctx->get_scope_level();
LOG_WORKER(1, " CUBE SIZE IN MAIN LOOP: " << cube.size() << "\n");
lbool r = check_cube(cube);
@ -276,7 +271,7 @@ namespace smt {
double cube_hardness;
if (m_config.m_explicit_hardness) {
cube_hardness = explicit_hardness(cube, initial_scope_lvl);
cube_hardness = explicit_hardness(cube);
LOG_WORKER(1, " explicit hardness: " << cube_hardness << "\n");
} else if (m_config.m_march_hardness) {
cube_hardness = march_cu_hardness(cube);