private bool ProcessImpl(Implementation impl)
{
var ret = false;
var gen = prover.VCExprGen;
// construct summaries
var env = VCExpressionGenerator.True;
foreach (var tup in impl2CalleeSummaries[impl.Name])
{
if (tup.Item1 == impl.Name)
{
continue;
}
var calleeSummary =
impl2Summary[tup.Item1].GetSummaryExpr(
GetVarMapping(name2Impl[tup.Item1], tup.Item2), prover.VCExprGen);
env = gen.AndSimp(env, gen.Eq(tup.Item2, calleeSummary));
}
while (true)
{
// construct self summaries
var summaryExpr = VCExpressionGenerator.True;
foreach (var tup in impl2CalleeSummaries[impl.Name])
{
if (tup.Item1 != impl.Name)
{
continue;
}
var ts =
impl2Summary[tup.Item1].GetSummaryExpr(
GetVarMapping(name2Impl[tup.Item1], tup.Item2), prover.VCExprGen);
summaryExpr = gen.AndSimp(summaryExpr, gen.Eq(tup.Item2, ts));
}
Console.WriteLine("Trying summary for {0}: {1}", impl.Name, summaryExpr);
reporter.model = null;
var vc = gen.AndSimp(env, summaryExpr);
vc = gen.Implies(vc, impl2VC[impl.Name]);
//Console.WriteLine("Checking: {0}", vc);
prover.BeginCheck(impl.Name, vc, reporter);
ProverInterface.Outcome proverOutcome = prover.CheckOutcome(reporter);
if (reporter.model == null)
{
break;
}
var state = CollectState(impl);
impl2Summary[impl.Name].Join(state);
ret = true;
}
return(ret);
}
public override void OnModel(IList <string> labels, Model model, ProverInterface.Outcome proverOutcome)
{
Debug.Assert(model != null);
//model.Write(Console.Out);
this.model = model;
}
