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fix in hnf for the lower bounds

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2018-07-11 12:29:09 -07:00
parent 2dfb8f53b6
commit e0e893b791
5 changed files with 21 additions and 9 deletions
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15
src/util/lp/hnf_cutter.h
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@ -29,6 +29,7 @@ class hnf_cutter {
var_register m_var_register;
general_matrix m_A;
vector<const lar_term*> m_terms;
vector<bool> m_terms_upper;
svector<constraint_index> m_constraints_for_explanation;
vector<mpq> m_right_sides;
lp_settings & m_settings;
@ -54,15 +55,22 @@ public:
// m_A will be filled from scratch in init_matrix_A
m_var_register.clear();
m_terms.clear();
m_terms_upper.clear();
m_constraints_for_explanation.clear();
m_right_sides.clear();
m_abs_max = zero_of_type<mpq>();
m_overflow = false;
}
void add_term(const lar_term* t, const mpq &rs, constraint_index ci) {
void add_term(const lar_term* t, const mpq &rs, constraint_index ci, bool upper_bound) {
m_terms.push_back(t);
m_right_sides.push_back(rs);
m_terms_upper.push_back(upper_bound);
if (upper_bound)
m_right_sides.push_back(rs);
else
m_right_sides.push_back(-rs);
m_constraints_for_explanation.push_back(ci);
for (const auto &p : *t) {
m_var_register.add_var(p.var());
mpq t = abs(ceil(p.coeff()));
@ -76,7 +84,8 @@ public:
}
void initialize_row(unsigned i) {
m_A.init_row_from_container(i, * m_terms[i], [this](unsigned j) { return m_var_register.add_var(j);});
mpq sign = m_terms_upper[i]? one_of_type<mpq>(): - one_of_type<mpq>();
m_A.init_row_from_container(i, * m_terms[i], [this](unsigned j) { return m_var_register.add_var(j);}, sign);
}
void init_matrix_A() {