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Add initial value setting for variables in Z3 API, solver, and optimize modules

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This commit is contained in:
Nikolaj Bjorner 2024-09-18 16:13:15 +03:00
parent 0ba306e7b3
commit 48712b4f60
31 changed files with 297 additions and 9 deletions
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41
src/smt/smt_context.cpp
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@ -2914,6 +2914,44 @@ namespace smt {
register_plugin(m_user_propagator);
}
void context::user_propagate_initialize_value(expr* var, expr* value) {
m_values.push_back({expr_ref(var, m), expr_ref(value, m)});
push_trail(push_back_vector(m_values));
}
void context::initialize_value(expr* var, expr* value) {
IF_VERBOSE(10, verbose_stream() << "context initialize " << mk_pp(var, m) << " := " << mk_pp(value, m) << "\n");
sort* s = var->get_sort();
ensure_internalized(var);
if (m.is_bool(s)) {
auto v = get_bool_var_of_id_option(var->get_id());
if (v == null_bool_var) {
IF_VERBOSE(5, verbose_stream() << "Boolean variable has no literal " << mk_pp(var, m) << " := " << mk_pp(value, m) << "\n");
return;
}
m_bdata[v].m_phase_available = true;
if (m.is_true(value))
m_bdata[v].m_phase = true;
else if (m.is_false(value))
m_bdata[v].m_phase = false;
else
IF_VERBOSE(5, verbose_stream() << "Boolean value is not constant " << mk_pp(var, m) << " := " << mk_pp(value, m) << "\n");
return;
}
if (!e_internalized(var))
return;
enode* n = get_enode(var);
theory* th = m_theories.get_plugin(s->get_family_id());
if (!th) {
IF_VERBOSE(5, verbose_stream() << "No theory is attached to variable " << mk_pp(var, m) << " := " << mk_pp(value, m) << "\n");
return;
}
th->initialize_value(var, value);
}
bool context::watches_fixed(enode* n) const {
return m_user_propagator && m_user_propagator->has_fixed() && n->get_th_var(m_user_propagator->get_family_id()) != null_theory_var;
}
@ -3756,6 +3794,9 @@ namespace smt {
TRACE("search", display(tout); display_enodes_lbls(tout););
TRACE("search_detail", m_asserted_formulas.display(tout););
init_search();
for (auto const& [var, value] : m_values)
initialize_value(var, value);
flet<bool> l(m_searching, true);
TRACE("after_init_search", display(tout););
IF_VERBOSE(2, verbose_stream() << "(smt.searching)\n";);