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fix #3814

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-04-06 19:43:32 -07:00
parent bd0620f245
commit 9bb579c5c8
2 changed files with 12 additions and 6 deletions
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14
src/muz/rel/dl_table.cpp
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@ -260,7 +260,7 @@ namespace datalog {
unsigned bitvector_table::fact2offset(const table_element* f) const {
unsigned result = 0;
for (unsigned i = 0; i < m_num_cols; ++i) {
SASSERT(f[i]<get_signature()[i]);
SASSERT(f[i] < get_signature()[i]);
result += ((unsigned)f[i]) << m_shift[i];
}
return result;
@ -274,15 +274,19 @@ namespace datalog {
}
void bitvector_table::add_fact(const table_fact & f) {
m_bv.set(fact2offset(f.c_ptr()));
if (m_num_cols > 0) {
m_bv.set(fact2offset(f.c_ptr()));
}
}
void bitvector_table::remove_fact(const table_element* fact) {
m_bv.unset(fact2offset(fact));
void bitvector_table::remove_fact(const table_element* fact) {
if (m_num_cols > 0) {
m_bv.unset(fact2offset(fact));
}
}
bool bitvector_table::contains_fact(const table_fact & f) const {
return m_bv.get(fact2offset(f.c_ptr()));
return !f.empty() && m_bv.get(fact2offset(f.c_ptr()));
}
table_base::iterator bitvector_table::begin() const {