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fix #3945

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-04-13 10:46:41 -07:00
parent 5c4f775b1b
commit 5dafd1fe25
3 changed files with 31 additions and 8 deletions
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25
src/smt/theory_diff_logic_def.h
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@ -252,7 +252,6 @@ bool theory_diff_logic<Ext>::internalize_atom(app * n, bool gate_ctx) {
k -= numeral(1);
}
else {
m_is_lia = false;
k -= this->m_epsilon;
}
edge_id neg = m_graph.add_edge(target, source, k, ~l);
@ -647,7 +646,7 @@ void theory_diff_logic<Ext>::new_edge(dl_var src, dl_var dst, unsigned num_edges
}
ctx.mk_clause(lits.size(), lits.c_ptr(), js, CLS_TH_LEMMA, nullptr);
if (dump_lemmas()) {
symbol logic(m_is_lia ? "QF_LIA" : "QF_LRA");
symbol logic(m_lia_or_lra == is_lia ? "QF_LIA" : "QF_LRA");
ctx.display_lemma_as_smt_problem(lits.size(), lits.c_ptr(), false_literal, logic);
}
@ -693,7 +692,7 @@ void theory_diff_logic<Ext>::set_neg_cycle_conflict() {
);
if (dump_lemmas()) {
symbol logic(m_is_lia ? "QF_LIA" : "QF_LRA");
symbol logic(m_lia_or_lra == is_lia ? "QF_LIA" : "QF_LRA");
ctx.display_lemma_as_smt_problem(lits.size(), lits.c_ptr(), false_literal, logic);
}
@ -743,6 +742,7 @@ theory_var theory_diff_logic<Ext>::mk_term(app* n) {
TRACE("arith", tout << mk_pp(n, get_manager()) << "\n";);
rational r;
if (m_util.is_numeral(n, r)) {
return mk_num(n, r);
@ -808,9 +808,26 @@ theory_var theory_diff_logic<Ext>::mk_var(enode* n) {
TRACE("diff_logic_vars", tout << "mk_var: " << v << "\n";);
m_graph.init_var(v);
get_context().attach_th_var(n, this, v);
set_sort(n->get_owner());
return v;
}
template<typename Ext>
theory_var theory_diff_logic<Ext>::set_sort(exir* n) {
if (m_util.is_int(n->get_owner())) {
if (m_lia_or_lra == is_lra) {
throw default_exception("difference logic does not work with mixed sorts");
}
m_lia_or_lra = is_lia;
}
else {
if (m_lia_or_lra == is_lia) {
throw default_exception("difference logic does not work with mixed sorts");
}
m_lia_or_lra = is_lra;
}
}
template<typename Ext>
theory_var theory_diff_logic<Ext>::mk_var(app* n) {
@ -853,7 +870,7 @@ void theory_diff_logic<Ext>::reset_eh() {
m_num_core_conflicts = 0;
m_num_propagation_calls = 0;
m_agility = 0.5;
m_is_lia = true;
m_lia_or_lra = not_set;
m_non_diff_logic_exprs = false;
m_objectives .reset();
m_objective_consts.reset();