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correctly explain the all fixed test in the octaganal tree

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2021-04-09 12:09:26 -07:00
parent 18610bf31f
commit 8848e5b4c3
2 changed files with 6 additions and 14 deletions
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18
src/math/lp/lp_bound_propagator.h
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@ -208,16 +208,12 @@ public:
}
void try_add_equation_with_lp_fixed_tables(const vertex *v) {
static int count = 0;
std::cout << ++count << std::endl;
if (count == 21)
enable_trace("cheap_eq");
SASSERT(m_fixed_vertex);
unsigned v_j = v->column();
unsigned j = null_lpvar;
if (!lp().find_in_fixed_tables(val(v_j), is_int(v_j), j))
return;
TRACE("cheap_eq", tout << "v_j = "; lp().print_column_info(v_j, tout) << std::endl;);
TRACE("cheap_eq", tout << "v = "; print_vert(tout, v) << std::endl;);
TRACE("cheap_eq", tout << "found j " << j << std::endl;
@ -225,12 +221,8 @@ public:
TRACE("cheap_eq", tout << "found j = " << j << std::endl;);
vector<edge> path = connect_u_v_in_tree(v, m_fixed_vertex);
explanation ex = get_explanation_from_path(path);
TRACE("cheap_eq", tout << "path expl = \n"; print_expl(tout, ex) << std::endl;);
TRACE("cheap_eq", tout << "fixed vert= \n"; print_vert(tout, m_fixed_vertex) << std::endl;);
TRACE("cheap_eq", tout << "fix vert expl = \n"; print_expl(tout, m_fixed_vertex_explanation) << std::endl;);
ex.add_expl(m_fixed_vertex_explanation);
explain_fixed_column(j, ex);
TRACE("cheap_eq", tout << "full expl = \n"; print_expl(tout, ex) << std::endl;);
add_eq_on_columns(ex, j, v->column());
}
@ -276,7 +268,7 @@ public:
m_pol.insert(j, pol_vert(p, v));
}
void check_and_set_polarity(vertex* v, int polarity, unsigned row_index) {
void check_and_set_polarity(vertex* v, int polarity, unsigned row_index, vertex*v_parent) {
pol_vert prev_pol;
if (!m_pol.find(v->column(), prev_pol)) {
set_polarity(v, polarity);
@ -287,7 +279,7 @@ public:
const vertex *u = prev_pol.v();
// we have a path L between u and v with p(L) = -1, that means we can
// create an equality of the form x + x = a, where x = v->column() = u->column()
vector<edge> path = connect_u_v_in_tree(u, v);
vector<edge> path = connect_u_v_in_tree(u, v_parent);
m_fixed_vertex_explanation = get_explanation_from_path(path);
explain_fixed_in_row(row_index, m_fixed_vertex_explanation);
set_fixed_vertex(v);
@ -373,14 +365,14 @@ public:
if (m_vertices.find(col, vy)) {
SASSERT(vy != nullptr);
if (!fixed_phase()) {
check_and_set_polarity(vy, pol(parent) * row_polarity, row_index);
check_and_set_polarity(vy, pol(parent) * row_polarity, row_index, parent);
}
return nullptr; // it is not a new vertex
}
vy = alloc_v(col);
parent->add_child(row_index, vy);
if (!fixed_phase())
check_and_set_polarity(vy, row_polarity * pol(parent), row_index);
check_and_set_polarity(vy, row_polarity * pol(parent), row_index, parent);
return vy;
}

2
src/smt/theory_lra.cpp
View file

@ -3052,7 +3052,7 @@ public:
scoped_trace_stream _sts(th, fn);
SASSERT(validate_eq(x, y));
// SASSERT(validate_eq(x, y));
ctx().assign_eq(x, y, eq_justification(js));
}