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dealing with incompleteness issues in duality

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Ken McMillan 2013-12-19 11:05:56 -08:00
parent a318b0f104
commit 48e10a9e2d
5 changed files with 32 additions and 7 deletions
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8
src/duality/duality_solver.cpp
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@ -1731,6 +1731,7 @@ namespace Duality {
virtual bool Build(){
stack.back().level = tree->slvr.get_scope_level();
bool was_sat = true;
while (true)
{
@ -1760,8 +1761,11 @@ namespace Duality {
if(RecordUpdate(node))
update_count++;
}
if(update_count == 0)
if(update_count == 0){
if(was_sat)
throw Incompleteness();
reporter->Message("backtracked without learning");
}
}
tree->ComputeProofCore(); // need to compute the proof core before popping solver
while(1) {
@ -1796,8 +1800,10 @@ namespace Duality {
HandleUpdatedNodes();
if(stack.size() == 1)
return false;
was_sat = false;
}
else {
was_sat = true;
tree->Push();
std::vector<Node *> &expansions = stack.back().expansions;
for(unsigned i = 0; i < expansions.size(); i++){