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disable ackerman reduction when head contains a non-constant/non-variable. #947

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-03-17 10:12:32 -07:00
parent a0237ed2a6
commit d754aa2dc4
3 changed files with 11 additions and 6 deletions
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6
src/smt/theory_arith_int.h
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@ -206,7 +206,8 @@ namespace smt {
numeral k = ceil(get_value(v));
rational _k = k.to_rational();
expr_ref bound(get_manager());
bound = m_util.mk_ge(get_enode(v)->get_owner(), m_util.mk_numeral(_k, true));
expr* e = get_enode(v)->get_owner();
bound = m_util.mk_ge(e, m_util.mk_numeral(_k, m_util.is_int(e)));
TRACE("arith_int", tout << mk_bounded_pp(bound, get_manager()) << "\n";);
context & ctx = get_context();
ctx.internalize(bound, true);
@ -371,7 +372,7 @@ namespace smt {
ctx.mk_th_axiom(get_id(), l1, l2);
TRACE("theory_arith_int",
TRACE("arith_int",
tout << "cut: (or " << mk_pp(p1, get_manager()) << " " << mk_pp(p2, get_manager()) << ")\n";
);
@ -1407,6 +1408,7 @@ namespace smt {
if (m_params.m_arith_int_eq_branching && branch_infeasible_int_equality()) {
return FC_CONTINUE;
}
theory_var int_var = find_infeasible_int_base_var();
if (int_var != null_theory_var) {
TRACE("arith_int", tout << "v" << int_var << " does not have an integer assignment: " << get_value(int_var) << "\n";);