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port equality propagation changes to new core

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This commit is contained in:
Nikolaj Bjorner 2021-03-28 16:15:04 -07:00
parent 0432311b11
commit 974ef3c147
5 changed files with 57 additions and 9 deletions
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24
src/sat/smt/arith_axioms.cpp
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@ -482,4 +482,28 @@ namespace arith {
return all_divs_valid;
}
void solver::fixed_var_eh(theory_var v, lp::constraint_index ci1, lp::constraint_index ci2, rational const& bound) {
theory_var w = euf::null_theory_var;
enode* x = var2enode(v);
if (bound.is_zero())
w = lp().local_to_external(get_zero(a.is_int(x->get_expr())));
else if (bound.is_one())
w = lp().local_to_external(get_one(a.is_int(x->get_expr())));
else if (!m_value2var.find(bound, w))
return;
enode* y = var2enode(w);
if (x->get_sort() != y->get_sort())
return;
if (x->get_root() == y->get_root())
return;
SASSERT(a.is_numeral(y->get_expr()));
reset_evidence();
set_evidence(ci1, m_core, m_eqs);
set_evidence(ci2, m_core, m_eqs);
++m_stats.m_fixed_eqs;
auto* jst = euf::th_explain::propagate(*this, m_core, m_eqs, x, y);
ctx.propagate(x, y, jst->to_index());
}
}