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fixes

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2021-09-25 17:26:18 -07:00
parent a574eebd05
commit 95e2d174c7
5 changed files with 37 additions and 23 deletions
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6
src/math/polysat/constraint.cpp
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@ -78,8 +78,9 @@ namespace polysat {
// solver handles unsat clauses by creating a conflict.
// solver also can propagate, but need to check that it does indeed.
void constraint_manager::watch(clause& cl, solver& s) {
if (cl.size() <= 1)
if (cl.empty())
return;
bool first = true;
for (unsigned i = 0; i < cl.size(); ++i) {
if (m_bvars.is_false(cl[i]))
@ -93,7 +94,8 @@ namespace polysat {
if (first)
m_bvars.watch(cl[0]).push_back(&cl);
m_bvars.watch(cl[1]).push_back(&cl);
if (cl.size() > 1)
m_bvars.watch(cl[1]).push_back(&cl);
if (m_bvars.is_true(cl[0]))
return;
if (first)