public override CBAProgram runCBAPass(CBAProgram p)
{
p.Typecheck();
p.TopLevelDeclarations.OfType <Procedure>().Iter(proc => procsWithoutBody.Add(proc.Name));
p.TopLevelDeclarations.OfType <Implementation>().Iter(impl => procsWithoutBody.Remove(impl.Name));
// remove malloc
//procsWithoutBody.RemoveWhere(str => str.Contains("malloc"));
// Make sure that procs without a body don't modify globals
foreach (var proc in p.TopLevelDeclarations.OfType <Procedure>().Where(proc => procsWithoutBody.Contains(proc.Name)))
{
if (proc.Modifies.Count > 0 && !BoogieUtil.checkAttrExists("allocator", proc.Attributes))
{
throw new InvalidInput("Produce Bug Witness: Procedure " + proc.Name + " modifies globals");
}
}
// Add the boogie_si_record_int procedure
var inpVarInt = new Formal(Token.NoToken, new TypedIdent(Token.NoToken, "x", Microsoft.Boogie.Type.Int), true);
var inpVarBool = new Formal(Token.NoToken, new TypedIdent(Token.NoToken, "x", Microsoft.Boogie.Type.Bool), true);
var reProcInt = new Procedure(Token.NoToken, recordProcNameInt, new List <TypeVariable>(), new List <Variable> {
inpVarInt
}, new List <Variable>(), new List <Requires>(), new List <IdentifierExpr>(), new List <Ensures>());
var reProcBool = new Procedure(Token.NoToken, recordProcNameBool, new List <TypeVariable>(), new List <Variable> {
inpVarBool
}, new List <Variable>(), new List <Requires>(), new List <IdentifierExpr>(), new List <Ensures>());
// Add procedures for initialization of local variables
foreach (var impl in p.TopLevelDeclarations.OfType <Implementation>())
{
var ncmds = new List <Cmd>();
foreach (var loc in (impl.LocVars.Concat(impl.OutParams)))
{
var cc = new CallCmd(Token.NoToken, GetInitLocalsProc(loc.TypedIdent.Type).Name, new List <Expr>(), new List <IdentifierExpr>(new IdentifierExpr[] { Expr.Ident(loc) }));
cc.Attributes = new QKeyValue(Token.NoToken, RestrictToTrace.ConcretizeConstantNameAttr, new List <object> {
LocalVarInitValueAttr
}, cc.Attributes);
cc.Proc = GetInitLocalsProc(loc.TypedIdent.Type);
ncmds.Add(cc);
}
ncmds.AddRange(impl.Blocks[0].Cmds);
impl.Blocks[0].Cmds = ncmds;
}
typeToInitLocalsProc.Values.Iter(pr => procsWithoutBody.Add(pr.Name));
typeToInitLocalsProc.Values.Iter(pr => p.AddTopLevelDeclaration(pr));
// save the current program
var fd = new FixedDuplicator(true);
var modInpProg = fd.VisitProgram(p);
// Instrument to record stuff
p.TopLevelDeclarations.OfType <Implementation>().Iter(impl =>
impl.Blocks.Iter(b => instrument(b)));
// Name clash if this assert fails
Debug.Assert(BoogieUtil.findProcedureDecl(p.TopLevelDeclarations, recordProcNameInt) == null);
Debug.Assert(BoogieUtil.findProcedureDecl(p.TopLevelDeclarations, recordProcNameBool) == null);
foreach (var rp in typeToRecordProc.Values)
{
Debug.Assert(BoogieUtil.findProcedureDecl(p.TopLevelDeclarations, rp.Name) == null);
}
p.AddTopLevelDeclaration(reProcInt);
p.AddTopLevelDeclaration(reProcBool);
p.AddTopLevelDeclarations(typeToRecordProc.Values);
var tmainimpl = BoogieUtil.findProcedureImpl(p.TopLevelDeclarations, p.mainProcName);
if (!QKeyValue.FindBoolAttribute(tmainimpl.Attributes, "entrypoint"))
{
tmainimpl.AddAttribute("entrypoint");
}
var program = new PersistentCBAProgram(p, p.mainProcName, 0);
//program.writeToFile("beforeverify.bpl");
var vp = new VerificationPass(true);
vp.run(program);
success = vp.success;
if (success)
{
return(null);
}
var trace = mapBackTraceRecord(vp.trace);
RestrictToTrace.addConcretization = true;
RestrictToTrace.addConcretizationAsConstants = true;
var tinfo = new InsertionTrans();
var rt = new RestrictToTrace(modInpProg, tinfo);
rt.addTrace(trace);
RestrictToTrace.addConcretization = false;
RestrictToTrace.addConcretizationAsConstants = false;
var rtprog = rt.getProgram();
// Build a map of where the alloc constants are from
allocConstants = rt.concretizeConstantToCall;
// Add symbolic constants for angelic map havocs
var newDecls = new List <Constant>();
rtprog.TopLevelDeclarations.OfType <Implementation>().Iter(impl =>
impl.Blocks.Iter(b => instrumentMapHavocs(b, allocConstants, newDecls)));
rtprog.AddTopLevelDeclarations(newDecls);
/*
* foreach (var impl in rtprog.TopLevelDeclarations.OfType<Implementation>())
* {
* // strip _trace from the impl name
* var implName = impl.Name;
* var c = implName.LastIndexOf("_trace");
* while (c != -1)
* {
* implName = implName.Substring(0, c);
* c = implName.LastIndexOf("_trace");
* }
*
* var vu = new VarsUsed();
* vu.VisitImplementation(impl);
* vu.varsUsed.Where(s => s.StartsWith("alloc_"))
* .Iter(s => allocConstants[s] = implName);
* }
*/
BoogieUtil.findProcedureImpl(rtprog.TopLevelDeclarations, rt.getFirstNameInstance(p.mainProcName))
.AddAttribute("entrypoint");
program = new PersistentCBAProgram(rtprog, rt.getFirstNameInstance(p.mainProcName), p.contextBound);
// Lets inline it all
var inlp = new InliningPass(1);
program = inlp.run(program);
var compress = new CompressBlocks();
var ret = program.getProgram();
compress.VisitProgram(ret);
return(new CBAProgram(ret, program.mainProcName, 0));
}
public RHS(CBAProgram program, IWeight iw)
{
this.iw = iw;
this.program = program;
intraGraphs = new List <IntraGraph>();
id2Graph = new Dictionary <string, IntraGraph>();
Succ = new Dictionary <string, HashSet <IntraGraph> >();
Pred = new Dictionary <string, HashSet <IntraGraph> >();
computeTime = TimeSpan.Zero;
// Make all the graphs
program.TopLevelDeclarations
.OfType <Implementation>()
.Iter(impl => intraGraphs.Add(
new IntraGraph(impl, iw, p =>
{
if (!id2Graph.ContainsKey(p))
{
return(null);
}
else
{
return(id2Graph[p].summary);
}
}
)));
intraGraphs.Iter(g => id2Graph.Add(g.Id, g));
intraGraphs.Iter(g =>
{
Succ.Add(g.Id, new HashSet <IntraGraph>());
Pred.Add(g.Id, new HashSet <IntraGraph>());
});
intraGraphs.Iter(g =>
g.Callees
.Where(s => id2Graph.ContainsKey(s))
.Iter(s =>
{
Succ[g.Id].Add(id2Graph[s]);
Pred[s].Add(g);
}
));
// assign priorities
var sccs = new StronglyConnectedComponents <IntraGraph>(
intraGraphs,
new Adjacency <IntraGraph>(g => Succ[g.Id]),
new Adjacency <IntraGraph>(g => Pred[g.Id]));
sccs.Compute();
var priority = intraGraphs.Count;
foreach (var scc in sccs)
{
/*
* if (scc.Count > 1)
* {
* Console.WriteLine("SCC size: {0}", scc.Count);
* scc.Iter(g => Console.WriteLine("{0}", g.Id));
* }
*/
scc.Iter(g => g.priority = priority);
priority--;
}
}