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take in changes for equalities

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2018-06-27 15:59:45 -07:00
parent 7b59e2094d
commit e3a9794d98
1 changed files with 25 additions and 15 deletions
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40
src/smt/theory_lra.cpp
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@ -379,9 +379,8 @@ class theory_lra::imp {
expr* n = terms[index].get();
st.terms_to_internalize().push_back(n);
if (a.is_add(n)) {
unsigned sz = to_app(n)->get_num_args();
for (unsigned i = 0; i < sz; ++i) {
st.push(to_app(n)->get_arg(i), coeffs[index]);
for (expr* arg : *to_app(n)) {
st.push(arg, coeffs[index]);
}
st.set_back(index);
}
@ -487,8 +486,7 @@ class theory_lra::imp {
++index;
}
}
for (unsigned i = st.terms_to_internalize().size(); i > 0; ) {
--i;
for (unsigned i = st.terms_to_internalize().size(); i-- > 0; ) {
expr* n = st.terms_to_internalize()[i];
if (is_app(n)) {
mk_enode(to_app(n));
@ -691,18 +689,24 @@ class theory_lra::imp {
++m_stats.m_add_rows;
}
void internalize_eq(theory_var v1, theory_var v2) {
void internalize_eq(theory_var v1, theory_var v2) {
TRACE("arith", tout << "internalize-eq\n";);
enode* n1 = get_enode(v1);
enode* n2 = get_enode(v2);
expr* o1 = n1->get_owner();
expr* o2 = n2->get_owner();
app_ref term(a.mk_sub(o1, o2), m);
theory_var z = internalize_def(term);
expr* o1 = n1->get_owner();
expr* o2 = n2->get_owner();
app_ref term(m.mk_fresh_const("eq", a.mk_real()), m);
scoped_internalize_state st(*this);
st.vars().push_back(v1);
st.vars().push_back(v2);
st.coeffs().push_back(rational::one());
st.coeffs().push_back(rational::minus_one());
theory_var z = internalize_linearized_def(term, st);
lp::var_index vi = get_var_index(z);
add_eq_constraint(m_solver->add_var_bound(vi, lp::EQ, rational::zero()), n1, n2);
TRACE("arith",
tout << "v" << v1 << " = " << "v" << v2 << ": "
<< mk_pp(n1->get_owner(), m) << " = " << mk_pp(n2->get_owner(), m) << "\n";);
<< mk_pp(o1, m) << " = " << mk_pp(o2, m) << "\n";);
}
void del_bounds(unsigned old_size) {
@ -750,6 +754,10 @@ class theory_lra::imp {
theory_var internalize_def(app* term) {
scoped_internalize_state st(*this);
linearize_term(term, st);
return internalize_linearized_def(term, st);
}
theory_var internalize_linearized_def(app* term, scoped_internalize_state& st) {
if (is_unit_var(st)) {
return st.vars()[0];
}
@ -757,6 +765,7 @@ class theory_lra::imp {
init_left_side(st);
theory_var v = mk_var(term);
lp::var_index vi = m_theory_var2var_index.get(v, UINT_MAX);
TRACE("arith", tout << mk_pp(term, m) << " " << v << " " << vi << "\n";);
if (vi == UINT_MAX) {
vi = m_solver->add_term(m_left_side, st.coeff());
m_theory_var2var_index.setx(v, vi, UINT_MAX);
@ -2814,11 +2823,12 @@ public:
}
unsigned nv = th.get_num_vars();
for (unsigned v = 0; v < nv; ++v) {
if (!ctx().is_relevant(get_enode(v))) out << "irr: ";
out << "v" << v;
if (can_get_value(v)) out << ", value: " << get_value(v);
out << ", shared: " << ctx().is_shared(get_enode(v))
<< ", rel: " << ctx().is_relevant(get_enode(v))
<< ", def: "; th.display_var_flat_def(out, v) << "\n";
if (can_get_value(v)) out << " = " << get_value(v);
if (is_int(v)) out << ", int";
if (ctx().is_shared(get_enode(v))) out << ", shared";
out << " := "; th.display_var_flat_def(out, v) << "\n";
}
}