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separate out file for objectives

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2013-11-07 18:09:44 -08:00
parent 759d80dfe3
commit 401fced400
10 changed files with 199 additions and 61 deletions
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31
src/opt/optimize_objectives.cpp
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@ -204,23 +204,25 @@ namespace opt {
Takes solver with hard constraints added.
Returns an optimal assignment to objective functions.
*/
lbool optimize_objectives::operator()(opt_solver& solver, app_ref_vector& objectives, vector<inf_eps>& values) {
lbool optimize_objectives::operator()(opt_solver& solver, app_ref_vector const& objectives) {
s = &solver;
s->reset_objectives();
m_lower.reset();
m_upper.reset();
m_objs.reset();
for (unsigned i = 0; i < objectives.size(); ++i) {
m_lower.push_back(inf_eps(rational(-1),inf_rational(0)));
m_upper.push_back(inf_eps(rational(1), inf_rational(0)));
m_objs.push_back(objectives[i]);
}
// First check_sat call to initialize theories
lbool is_sat = s->check_sat(0, 0);
if (is_sat == l_true) {
if (is_sat == l_true && !objectives.empty()) {
opt_solver::scoped_push _push(*s);
for (unsigned i = 0; i < objectives.size(); ++i) {
m_vars.push_back(s->add_objective(objectives[i].get()));
m_vars.push_back(s->add_objective(objectives[i]));
}
if (m_engine == symbol("basic")) {
@ -235,12 +237,31 @@ namespace opt {
NOT_IMPLEMENTED_YET();
UNREACHABLE();
}
values.reset();
values.append(m_lower);
}
std::cout << "is-sat: " << is_sat << std::endl;
display(std::cout);
return is_sat;
}
inf_eps optimize_objectives::get_value(bool as_positive, unsigned index) const {
if (as_positive) {
return m_lower[index];
}
else {
return -m_lower[index];
}
}
void optimize_objectives::display(std::ostream& out) const {
unsigned sz = m_objs.size();
for (unsigned i = 0; i < sz; ++i) {
out << "objective value: " << mk_pp(m_objs[i], m) << " -> " << get_value(true, i).to_string() << std::endl;
}
}
}
#endif