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#5223

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unreachable code in dual solver
This commit is contained in:
Nikolaj Bjorner 2021-05-29 09:49:47 -07:00
parent 3024fe7baf
commit 4d41db2920
3 changed files with 21 additions and 3 deletions
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7
src/sat/tactic/goal2sat.cpp
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@ -137,6 +137,10 @@ struct goal2sat::imp : public sat::sat_internalizer {
if (relevancy_enabled())
ensure_euf()->add_root(n, lits);
}
void add_dual_root(sat::literal lit) {
add_dual_root(1, &lit);
}
void mk_clause(sat::literal l) {
mk_clause(1, &l);
@ -199,6 +203,7 @@ struct goal2sat::imp : public sat::sat_internalizer {
// create fake variable to represent true;
m_true = sat::literal(add_var(false, m.mk_true()), false);
mk_clause(m_true); // v is true
add_dual_root(1, &m_true);
}
return m_true;
}
@ -223,6 +228,8 @@ struct goal2sat::imp : public sat::sat_internalizer {
if (!m_expr2var_replay || !m_expr2var_replay->find(t, v))
v = add_var(true, t);
m_map.insert(t, v);
if (relevancy_enabled() && (m.is_true(t) || m.is_false(t)))
add_dual_root(sat::literal(v, m.is_false(t)));
return v;
}