diff --git a/src/muz/bmc/dl_bmc_engine.cpp b/src/muz/bmc/dl_bmc_engine.cpp index 7a88c1188..0dcbf4644 100644 --- a/src/muz/bmc/dl_bmc_engine.cpp +++ b/src/muz/bmc/dl_bmc_engine.cpp @@ -1465,6 +1465,10 @@ namespace datalog { if (m_rules.get_num_rules() == 0) { return l_false; } + if (m_rules.get_predicate_rules(m_query_pred).empty()) { + return l_false; + } + if (is_linear()) { if (m_ctx.get_engine() == QBMC_ENGINE) {