// this demonstrate the structure interface
static void test_structure_solver(string[] args)
{
SATSolver solver = new SATSolver();
int a = solver.CreatePI();
int b = solver.CreatePI();
int c = solver.CreatePI();
//int d = solver.CreatePI();
int xor_a_b = solver.Xor(a, b);
int not_a = solver.Not(a);
int not_b = solver.Not(b);
int and_a_not_b = solver.And(a, not_b);
int and_b_not_a = solver.And(b, not_a);
int xor_a_b_p = solver.Or(and_a_not_b, and_b_not_a);
int miter = solver.Xor(xor_a_b, xor_a_b_p);
SATStatus r = solver.TestSAT(miter);
WriteLine(String.Format("Test Right {0}", r.ToString()));
int and_a_b = solver.And(a, b);
int xor_a_b_wrong = solver.Or(and_a_not_b, and_a_b);
int miter1 = solver.Xor(xor_a_b, xor_a_b_wrong);
r = solver.TestSAT(miter1);
WriteLine(String.Format("Test Wrong {0}", r.ToString()));
int and_a_b_c = solver.And(solver.And(a, b), c);
int flag = solver.AllocFlag();
solver.MarkTransitiveFanins(and_a_b_c, flag);
for (int i = 0, sz = solver.NumPI(); i < sz; ++i)
{
int node_id = solver.NthPI(i);
bool flagset = solver.IsNodeFlagSet(node_id, flag);
if (flagset)
{
WriteLine(String.Format("PI {0} is in the transitive fanin", i));
}
else
{
WriteLine(String.Format("PI {0} is NOT in the transitive fanin", i));
}
}
solver.ClearFlag(flag);
MyHashtable nameMap = new MyHashtable();
nameMap.Add(0, "PrimaryIn 0");
WriteLine(solver.TreeToString(miter1, nameMap));
WriteLine(solver.TreeToString(xor_a_b, nameMap));
WriteLine("Press Return...");
System.Console.ReadLine();
}
public static bool test_small_model()
{
SATSolver solver = new SATSolver();
int a = solver.NthPI(0);
int b = solver.NthPI(1);
int c = solver.NthPI(2);
int d = solver.NthPI(3);
int ab = solver.And(a, b);
int cd = solver.And(c, d);
int abcd = solver.And(ab, cd);
int constraint = solver.Constraint(abcd);
solver.Solve();
int [] model = solver.FindSmallModel();
print_model(model);
solver.ReleaseConstraint(constraint);
int not_abcd = solver.Not(abcd);
constraint = solver.Constraint(not_abcd);
solver.Solve();
model = solver.FindSmallModel();
print_model(model);
solver.ReleaseConstraint(constraint);
int e = solver.CreatePI();
int f = solver.CreatePI();
int exf = solver.Xor(e, f);
int and_exf_abcd = solver.And(exf, abcd);
constraint = solver.Constraint(and_exf_abcd);
solver.Solve();
model = solver.FindSmallModel();
print_model(model);
solver.ReleaseConstraint(constraint);
int not_and_exf_abcd = solver.Not(and_exf_abcd);
constraint = solver.Constraint(not_and_exf_abcd);
solver.Solve();
model = solver.FindSmallModel();
print_model(model);
solver.ReleaseConstraint(constraint);
return(true);
}