/// <summary>
/// Parses a z3 solution into a configuration.
/// This method also supports numeric variables.
/// </summary>
/// <param name="variables">List of all variables in the z3 context.</param>
/// <param name="model">Solution of the context.</param>
/// <param name="termToOption">Map from variables to binary options.</param>
/// <param name="optionsToConsider">The options that are considered for the solution.</param>
/// <returns>Configuration parsed from the solution.</returns>
public static Tuple <List <BinaryOption>, Dictionary <NumericOption, double> > RetrieveConfiguration(
List <Expr> variables, Model model, Dictionary <Expr, ConfigurationOption> termToOption,
List <ConfigurationOption> optionsToConsider = null)
{
List <BinaryOption> binOpts = new List <BinaryOption>();
Dictionary <NumericOption, double> config = new Dictionary <NumericOption, double>();
foreach (Expr variable in variables)
{
if (optionsToConsider != null && !optionsToConsider.Contains(termToOption[variable]))
{
continue;
}
Expr allocation = model.Eval(variable, completion: true);
if (allocation.GetType() == typeof(BoolExpr))
{
BoolExpr boolExpr = (BoolExpr)allocation;
if (boolExpr.IsTrue)
{
binOpts.Add((BinaryOption)termToOption[variable]);
}
}
else
{
// In this case, we have a numeric variable
FPNum fpNum = (FPNum)allocation;
config.Add((NumericOption)termToOption[variable], Z3Solver.lookUpNumericValue(fpNum.ToString()));
}
}
return(new Tuple <List <BinaryOption>, Dictionary <NumericOption, double> >(binOpts, config));
}
