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https://github.com/Z3Prover/z3
synced 2025-04-23 17:15:31 +00:00
fix remove lar_solver::add_constraint
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson
parent
7cd90537c3
commit
3c5b1086a1
8 changed files with 164 additions and 122 deletions
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@ -2730,7 +2730,10 @@ void test_term() {
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vector<std::pair<mpq, var_index>> term_one;
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term_one.push_back(std::make_pair(mpq(1), one));
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solver.add_constraint(term_one, lconstraint_kind::EQ, mpq(0));
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int ti = 0;
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unsigned j = solver.add_term(term_one, ti++);
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solver.add_var_bound(j, lconstraint_kind::LE, mpq(0));
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solver.add_var_bound(j, lconstraint_kind::GE, mpq(0));
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vector<std::pair<mpq, var_index>> term_ls;
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term_ls.push_back(std::pair<mpq, var_index>(mpq(1), x));
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@ -2742,13 +2745,16 @@ void test_term() {
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ls.push_back(std::pair<mpq, var_index>(mpq(1), x));
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ls.push_back(std::pair<mpq, var_index>(mpq(1), y));
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ls.push_back(std::pair<mpq, var_index>(mpq(1), z));
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solver.add_constraint(ls, lconstraint_kind::EQ, mpq(0));
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j = solver.add_term(ls, ti++);
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solver.add_var_bound(j , lconstraint_kind::LE, mpq(0));
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solver.add_var_bound(j , lconstraint_kind::GE, mpq(0));
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ls.clear();
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ls.push_back(std::pair<mpq, var_index>(mpq(1), x));
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solver.add_constraint(ls, lconstraint_kind::LT, mpq(0));
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j = solver.add_term(ls, ti++);
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solver.add_var_bound(j, lconstraint_kind::LT, mpq(0));
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ls.push_back(std::pair<mpq, var_index>(mpq(2), y));
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solver.add_constraint(ls, lconstraint_kind::GT, mpq(0));
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j = solver.add_term(ls, ti++);
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solver.add_var_bound(j, lconstraint_kind::GT, mpq(0));
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auto status = solver.solve();
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std::cout << lp_status_to_string(status) << std::endl;
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std::unordered_map<var_index, mpq> model;
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@ -2773,10 +2779,13 @@ void test_evidence_for_total_inf_simple(argument_parser & args_parser) {
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ls.push_back(std::pair<mpq, var_index>(mpq(1), x));
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ls.push_back(std::pair<mpq, var_index>(mpq(1), y));
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solver.add_constraint(ls, GE, mpq(1));
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unsigned j = solver.add_term(ls, 1);
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solver.add_var_bound(j, GE, mpq(1));
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ls.pop_back();
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ls.push_back(std::pair<mpq, var_index>(- mpq(1), y));
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solver.add_constraint(ls, lconstraint_kind::GE, mpq(0));
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j = solver.add_term(ls, 2);
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solver.add_var_bound(j, GE, mpq(0));
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auto status = solver.solve();
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std::cout << lp_status_to_string(status) << std::endl;
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std::unordered_map<var_index, mpq> model;
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@ -2813,21 +2822,21 @@ void test_bound_propagation_one_small_sample1() {
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coeffs.clear();
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coeffs.push_back(std::pair<mpq, var_index>(mpq(1), a));
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coeffs.push_back(std::pair<mpq, var_index>(mpq(-1), b));
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ls.add_constraint(coeffs, LE, zero_of_type<mpq>());
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coeffs.clear();
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coeffs.push_back(std::pair<mpq, var_index>(mpq(1), b));
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coeffs.push_back(std::pair<mpq, var_index>(mpq(-1), c));
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ls.add_constraint(coeffs, LE, zero_of_type<mpq>());
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vector<implied_bound> ev;
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ls.add_var_bound(a, LE, mpq(1));
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ls.solve();
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my_bound_propagator bp(ls);
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ls.propagate_bounds_for_touched_rows(bp);
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std::cout << " bound ev from test_bound_propagation_one_small_sample1" << std::endl;
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for (auto & be : bp.m_ibounds) {
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std::cout << "bound\n";
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ls.print_implied_bound(be, std::cout);
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}
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// ls.add_constraint(coeffs, LE, zero_of_type<mpq>());
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// coeffs.clear();
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// coeffs.push_back(std::pair<mpq, var_index>(mpq(1), b));
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// coeffs.push_back(std::pair<mpq, var_index>(mpq(-1), c));
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// ls.add_constraint(coeffs, LE, zero_of_type<mpq>());
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// vector<implied_bound> ev;
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// ls.add_var_bound(a, LE, mpq(1));
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// ls.solve();
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// my_bound_propagator bp(ls);
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// ls.propagate_bounds_for_touched_rows(bp);
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// std::cout << " bound ev from test_bound_propagation_one_small_sample1" << std::endl;
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// for (auto & be : bp.m_ibounds) {
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// std::cout << "bound\n";
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// ls.print_implied_bound(be, std::cout);
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// } // todo: restore test
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}
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void test_bound_propagation_one_small_samples() {
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@ -2870,12 +2879,13 @@ void test_bound_propagation_one_row() {
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vector<std::pair<mpq, var_index>> c;
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c.push_back(std::pair<mpq, var_index>(mpq(1), x0));
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c.push_back(std::pair<mpq, var_index>(mpq(-1), x1));
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ls.add_constraint(c, EQ, one_of_type<mpq>());
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vector<implied_bound> ev;
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ls.add_var_bound(x0, LE, mpq(1));
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ls.solve();
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my_bound_propagator bp(ls);
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ls.propagate_bounds_for_touched_rows(bp);
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// todo : restore test
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// ls.add_constraint(c, EQ, one_of_type<mpq>());
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// vector<implied_bound> ev;
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// ls.add_var_bound(x0, LE, mpq(1));
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// ls.solve();
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// my_bound_propagator bp(ls);
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// ls.propagate_bounds_for_touched_rows(bp);
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}
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void test_bound_propagation_one_row_with_bounded_vars() {
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lar_solver ls;
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@ -2884,14 +2894,15 @@ void test_bound_propagation_one_row_with_bounded_vars() {
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vector<std::pair<mpq, var_index>> c;
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c.push_back(std::pair<mpq, var_index>(mpq(1), x0));
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c.push_back(std::pair<mpq, var_index>(mpq(-1), x1));
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ls.add_constraint(c, EQ, one_of_type<mpq>());
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vector<implied_bound> ev;
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ls.add_var_bound(x0, GE, mpq(-3));
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ls.add_var_bound(x0, LE, mpq(3));
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ls.add_var_bound(x0, LE, mpq(1));
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ls.solve();
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my_bound_propagator bp(ls);
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ls.propagate_bounds_for_touched_rows(bp);
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// todo: restore test
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// ls.add_constraint(c, EQ, one_of_type<mpq>());
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// vector<implied_bound> ev;
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// ls.add_var_bound(x0, GE, mpq(-3));
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// ls.add_var_bound(x0, LE, mpq(3));
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// ls.add_var_bound(x0, LE, mpq(1));
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// ls.solve();
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// my_bound_propagator bp(ls);
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// ls.propagate_bounds_for_touched_rows(bp);
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}
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void test_bound_propagation_one_row_mixed() {
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lar_solver ls;
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@ -2900,12 +2911,13 @@ void test_bound_propagation_one_row_mixed() {
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vector<std::pair<mpq, var_index>> c;
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c.push_back(std::pair<mpq, var_index>(mpq(1), x0));
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c.push_back(std::pair<mpq, var_index>(mpq(-1), x1));
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ls.add_constraint(c, EQ, one_of_type<mpq>());
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vector<implied_bound> ev;
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ls.add_var_bound(x1, LE, mpq(1));
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ls.solve();
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my_bound_propagator bp(ls);
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ls.propagate_bounds_for_touched_rows(bp);
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// todo: restore test
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// ls.add_constraint(c, EQ, one_of_type<mpq>());
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// vector<implied_bound> ev;
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// ls.add_var_bound(x1, LE, mpq(1));
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// ls.solve();
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// my_bound_propagator bp(ls);
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// ls.propagate_bounds_for_touched_rows(bp);
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}
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void test_bound_propagation_two_rows() {
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@ -2917,18 +2929,19 @@ void test_bound_propagation_two_rows() {
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c.push_back(std::pair<mpq, var_index>(mpq(1), x));
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c.push_back(std::pair<mpq, var_index>(mpq(2), y));
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c.push_back(std::pair<mpq, var_index>(mpq(3), z));
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ls.add_constraint(c, GE, one_of_type<mpq>());
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c.clear();
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c.push_back(std::pair<mpq, var_index>(mpq(3), x));
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c.push_back(std::pair<mpq, var_index>(mpq(2), y));
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c.push_back(std::pair<mpq, var_index>(mpq(y), z));
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ls.add_constraint(c, GE, one_of_type<mpq>());
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ls.add_var_bound(x, LE, mpq(2));
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vector<implied_bound> ev;
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ls.add_var_bound(y, LE, mpq(1));
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ls.solve();
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my_bound_propagator bp(ls);
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ls.propagate_bounds_for_touched_rows(bp);
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// todo: restore test
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// ls.add_constraint(c, GE, one_of_type<mpq>());
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// c.clear();
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// c.push_back(std::pair<mpq, var_index>(mpq(3), x));
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// c.push_back(std::pair<mpq, var_index>(mpq(2), y));
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// c.push_back(std::pair<mpq, var_index>(mpq(y), z));
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// ls.add_constraint(c, GE, one_of_type<mpq>());
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// ls.add_var_bound(x, LE, mpq(2));
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// vector<implied_bound> ev;
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// ls.add_var_bound(y, LE, mpq(1));
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// ls.solve();
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// my_bound_propagator bp(ls);
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// ls.propagate_bounds_for_touched_rows(bp);
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}
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void test_total_case_u() {
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@ -2941,14 +2954,15 @@ void test_total_case_u() {
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c.push_back(std::pair<mpq, var_index>(mpq(1), x));
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c.push_back(std::pair<mpq, var_index>(mpq(2), y));
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c.push_back(std::pair<mpq, var_index>(mpq(3), z));
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ls.add_constraint(c, LE, one_of_type<mpq>());
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ls.add_var_bound(x, GE, zero_of_type<mpq>());
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ls.add_var_bound(y, GE, zero_of_type<mpq>());
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vector<implied_bound> ev;
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ls.add_var_bound(z, GE, zero_of_type<mpq>());
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ls.solve();
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my_bound_propagator bp(ls);
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ls.propagate_bounds_for_touched_rows(bp);
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// todo: restore test
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// ls.add_constraint(c, LE, one_of_type<mpq>());
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// ls.add_var_bound(x, GE, zero_of_type<mpq>());
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// ls.add_var_bound(y, GE, zero_of_type<mpq>());
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// vector<implied_bound> ev;
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// ls.add_var_bound(z, GE, zero_of_type<mpq>());
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// ls.solve();
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// my_bound_propagator bp(ls);
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// ls.propagate_bounds_for_touched_rows(bp);
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}
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bool contains_j_kind(unsigned j, lconstraint_kind kind, const mpq & rs, const vector<implied_bound> & ev) {
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for (auto & e : ev) {
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@ -2967,17 +2981,18 @@ void test_total_case_l(){
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c.push_back(std::pair<mpq, var_index>(mpq(1), x));
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c.push_back(std::pair<mpq, var_index>(mpq(2), y));
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c.push_back(std::pair<mpq, var_index>(mpq(3), z));
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ls.add_constraint(c, GE, one_of_type<mpq>());
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ls.add_var_bound(x, LE, one_of_type<mpq>());
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ls.add_var_bound(y, LE, one_of_type<mpq>());
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ls.settings().presolve_with_double_solver_for_lar = true;
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vector<implied_bound> ev;
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ls.add_var_bound(z, LE, zero_of_type<mpq>());
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ls.solve();
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my_bound_propagator bp(ls);
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ls.propagate_bounds_for_touched_rows(bp);
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lp_assert(ev.size() == 4);
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lp_assert(contains_j_kind(x, GE, - one_of_type<mpq>(), ev));
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// todo: restore test
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// ls.add_constraint(c, GE, one_of_type<mpq>());
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// ls.add_var_bound(x, LE, one_of_type<mpq>());
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// ls.add_var_bound(y, LE, one_of_type<mpq>());
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// ls.settings().presolve_with_double_solver_for_lar = true;
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// vector<implied_bound> ev;
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// ls.add_var_bound(z, LE, zero_of_type<mpq>());
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// ls.solve();
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// my_bound_propagator bp(ls);
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// ls.propagate_bounds_for_touched_rows(bp);
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// lp_assert(ev.size() == 4);
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// lp_assert(contains_j_kind(x, GE, - one_of_type<mpq>(), ev));
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}
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void test_bound_propagation() {
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test_total_case_u();
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@ -386,17 +386,19 @@ namespace lp {
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return ret;
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}
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void add_constraint_to_solver(lar_solver * solver, formula_constraint & fc) {
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void add_constraint_to_solver(lar_solver * solver, formula_constraint & fc, unsigned i) {
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vector<std::pair<mpq, var_index>> ls;
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for (auto & it : fc.m_coeffs) {
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ls.push_back(std::make_pair(it.first, solver->add_var(register_name(it.second), false)));
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}
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solver->add_constraint(ls, fc.m_kind, fc.m_right_side);
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unsigned j = solver->add_term(ls, i);
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solver->add_var_bound(j, fc.m_kind, fc.m_right_side);
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}
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void fill_lar_solver(lar_solver * solver) {
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unsigned i = 0;
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for (formula_constraint & fc : m_constraints)
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add_constraint_to_solver(solver, fc);
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add_constraint_to_solver(solver, fc, i++);
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}
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