void ToSATAIG::mark_variables_as_frozen(SATSolver& satSolver)
{
for (ArrayTransformer::ArrType::iterator it =
arrayTransformer->arrayToIndexToRead.begin();
it != arrayTransformer->arrayToIndexToRead.end(); it++)
{
const ArrayTransformer::arrTypeMap& atm = it->second;
for (ArrayTransformer::arrTypeMap::const_iterator arr_it = atm.begin();
arr_it != atm.end(); arr_it++)
{
const ArrayTransformer::ArrayRead& ar = arr_it->second;
ASTNodeToSATVar::iterator it = nodeToSATVar.find(ar.index_symbol);
if (it != nodeToSATVar.end())
{
const vector<unsigned>& v = it->second;
for (size_t i = 0, size = v.size(); i < size; ++i)
satSolver.setFrozen(v[i]);
}
ASTNodeToSATVar::iterator it2 = nodeToSATVar.find(ar.symbol);
if (it2 != nodeToSATVar.end())
{
const vector<unsigned>& v = it2->second;
for (size_t i = 0, size = v.size(); i < size; ++i)
satSolver.setFrozen(v[i]);
}
}
}
}
void getSatVariables(const ASTNode& a, vector<unsigned>& v_a,
SATSolver& SatSolver, ToSATBase::ASTNodeToSATVar& satVar)
{
ToSATBase::ASTNodeToSATVar::iterator it = satVar.find(a);
if (it != satVar.end())
v_a = it->second;
else if (!a.isConstant())
{
assert(a.GetKind() == SYMBOL);
// It was ommitted from the initial problem, so assign it freshly.
for (unsigned i = 0; i < a.GetValueWidth(); i++)
{
uint32_t v = SatSolver.newVar();
// We probably don't want the variable eliminated.
SatSolver.setFrozen(v);
v_a.push_back(v);
}
satVar.insert(make_pair(a, v_a));
}
}
