public void Run()
{
Implementation impl;
var rd = "";
while (true)
{
if (!impls.TryTake(out impl))
{
break;
}
while (!resources.TryTake(out rd))
{
Thread.Sleep(100);
}
sem.WaitOne();
var wd = Path.Combine(rd, impl.Name); // create new directory for each entrypoint
Directory.CreateDirectory(wd); // create new directory for each entrypoint
RemoteExec.CleanDirectory(wd);
var pruneFile = Path.Combine(wd, "pruneSlice.bpl");
Program newprogram;
// lock because Parsing a program is not thread-safe
lock (fslock)
{
BoogieUtil.PrintProgram(program, pruneFile); // dump original program (so that each entrypoint has its own copy of program)
newprogram = BoogieUtil.ReadAndOnlyResolve(pruneFile); // entrypoint's copy of the program
}
// slice the program by entrypoints
Program shallowP = pruneDeepProcs(newprogram, ref edges, impl.Name, approximationDepth, implNames);
BoogieUtil.pruneProcs(shallowP,
shallowP.TopLevelDeclarations.OfType <Procedure>()
.Where(proc => BoogieUtil.checkAttrExists("entrypoint", proc.Attributes))
.Select(proc => proc.Name)
.FirstOrDefault());
File.Delete(pruneFile);
lock (fslock)
{
BoogieUtil.PrintProgram(shallowP, pruneFile); // dump sliced program
}
sem.Release();
if (Driver.createEntryPointBplsOnly)
{
Console.WriteLine("Skipping AVN run for {0} given /createEntrypointBplsOnly", impl.Name);
resources.Add(rd);
continue;
}
if (!remotedirs.Contains(rd))
{
Console.WriteLine("Running entrypoint {0} locally {{", impl.Name);
if (deadlineReached)
{
return;
}
// spawn the job -- local
var output = RemoteExec.run(wd, avnPath, string.Format("\"{0}\" {1}", pruneFile, avnArgs));
lock (fslock)
{
// delete temp files
if (!keepFiles)
{
var files = System.IO.Directory.GetFiles(wd, "*.bpl");
foreach (var f in files)
{
System.IO.File.Delete(f);
}
}
using (StreamWriter sw = new StreamWriter(Path.Combine(wd, "stdout.txt")))
output.Iter(s => sw.WriteLine("{0}", s));
}
Console.WriteLine("Running entrypoint {0} locally }}", impl.Name);
}
else
{
// spawn the job -- remote
if (psexecPath == null)
{
throw new FileNotFoundException("Cannot find PSEXEC!");
}
// find the name of the machine from the remote folder name
var machine = "";
var remoteroot = RemoteExec.GetRemoteFolder(rd, out machine);
Console.WriteLine("Running entrypoint {0} on {1} {{", impl.Name, machine);
// psexec machine -w remoteroot\impl remoteroot\fastavn\fastavn.exe remoteroot args
wd = Path.Combine(remoteroot, impl.Name);
var cmd = string.Format("{0} -w {1} {2} {3} {4}", machine, wd, Path.Combine(remoteroot, "fastavn", "AngelicVerifierNull.exe"),
"pruneSlice.bpl", avnArgs);
//Console.WriteLine("PSEXEC Running: {0}", cmd);
if (deadlineReached)
{
return;
}
var output = RemoteExec.run(Directory.GetCurrentDirectory(), psexecPath, cmd);
lock (fslock)
{
// delete temp files
var td = Path.Combine(rd, impl.Name);
if (debug)
{
Console.WriteLine("Getting files in directory: {0}", td);
}
var files = System.IO.Directory.GetFiles(td, "*.bpl");
foreach (var f in files)
{
if (debug)
{
Console.WriteLine("Deleting {0}", f);
}
System.IO.File.Delete(f);
}
// copy the results back
var ld = Path.Combine(Directory.GetCurrentDirectory(), impl.Name);
Directory.CreateDirectory(ld);
RemoteExec.CleanDirectory(ld);
RemoteExec.CopyFolder(rd, Directory.GetCurrentDirectory(), impl.Name, true);
using (StreamWriter sw = new StreamWriter(Path.Combine(ld, "stdout.txt")))
output.Iter(s => sw.WriteLine("{0}", s));
}
Console.WriteLine("Running entrypoint {0} on {1} }}", impl.Name, machine);
}
lock (fslock)
{
// collect and merge bugs
var bugs = collectBugs(Path.Combine(Directory.GetCurrentDirectory(), impl.Name, bugReportFileName));
bugs.Iter(b =>
{
if (!mergedBugs.ContainsKey(b))
{
mergedBugs[b] = 0;
}
mergedBugs[b] += 1;
});
Utils.Print(string.Format("Bugs found so far: {0}", mergedBugs.Count));
resources.Add(rd);
}
}
}
static void Main(string[] args)
{
Console.CancelKeyPress += Console_CancelKeyPress;
if (args.Length < 1)
{
Console.WriteLine("Usage: FastAVN file.bpl");
return;
}
if (args.Any(s => s == "/break"))
{
System.Diagnostics.Debugger.Launch();
}
if (args.Any(s => s == "/keepFiles"))
{
Driver.keepFiles = true;
}
args.Where(s => s.StartsWith("/aopt:"))
.Iter(s => avnArgs += " /" + s.Substring("/aopt:".Length) + " ");
args.Where(s => s.StartsWith("/hopt:"))
.Iter(s => avHarnessInstrArgs += " /" + s.Substring("/hopt:".Length) + " ");
if (args.Any(s => s == "/createEntrypointBplsOnly"))
{
Driver.createEntryPointBplsOnly = true;
}
if (args.Any(s => s == "/mergeEntrypointBugsOnly"))
{
Driver.mergeEntryPointBugsOnly = true;
}
// user definded verbose level
args.Where(s => s.StartsWith("/verbose:"))
.Iter(s => verbose = int.Parse(s.Substring("/verbose:".Length)));
// depth k used by implementation pruning
args.Where(s => s.StartsWith("/depth:"))
.Iter(s => approximationDepth = int.Parse(s.Substring("/depth:".Length)));
args.Where(s => s.StartsWith("/numThreads:"))
.Iter(s => numThreads = int.Parse(s.Substring("/numThreads:".Length)));
// Get config for remote execution
args.Where(s => s.StartsWith("/config:"))
.Iter(s => config = FastAvnConfig.DeSerialize(s.Substring("/config:".Length)));
args.Where(s => s.StartsWith("/killAfter:"))
.Iter(s => deadline = int.Parse(s.Substring("/killAfter:".Length)));
// default args
avnArgs += " /dumpResults:" + bugReportFileName + " ";
avnArgs += " /EE:onlySlicAssumes+ /EE:ignoreAllAssumes- ";
// Find AVN executable
avnPath = findExe("AngelicVerifierNull.exe");
avHarnessInstrPath = findExe("AvHarnessInstrumentation.exe");
psexecPath = findExe("psexec.exe");
Debug.Assert(avnPath != null && avHarnessInstrPath != null);
try
{
Stats.resume("fastavn");
if (Driver.mergeEntryPointBugsOnly)
{
// collate bugs
lock (fslock)
{
printingOutput = true;
if (Directory.Exists(bug_folder))
{
Utils.Print(string.Format("WARNING!! Removing {0} folder", bug_folder));
Directory.Delete(Path.Combine(Directory.GetCurrentDirectory(), bug_folder), true);
}
HashSet <string> epNames = new HashSet <string>(Directory.GetDirectories(@"."));
epNames = new HashSet <string>(epNames.Select(s => Path.GetFileName(s)));
printBugs(ref mergedBugs, epNames.Count);
mergeBugs(epNames);
}
return;
}
// Get input program
Utils.Print(String.Format("----- Run FastAVN on {0} with k={1} ------",
args[0], approximationDepth), Utils.PRINT_TAG.AV_OUTPUT);
// initialize corral and boogie for fastAVN
InitializeCorralandBoogie();
// Run harness instrumentation
var resultfile = Path.Combine(Directory.GetCurrentDirectory(), "hinst.bpl");
var hinstOut = RemoteExec.run(Directory.GetCurrentDirectory(), avHarnessInstrPath, string.Format("{0} \"{1}\" {2}", args[0], resultfile, avHarnessInstrArgs));
hinstOut.Iter(s => Console.WriteLine("[hinst] {0}", s));
if (!File.Exists(resultfile))
{
throw new Exception("Error running harness instrumentation");
}
var prog = BoogieUtil.ReadAndOnlyResolve(resultfile);
// Do a run on instrumented program, filter out entrypoints
var entrypoints = new HashSet <string>();
var entrypoint_impl = prog.TopLevelDeclarations.OfType <Implementation>()
.Where(impl => QKeyValue.FindBoolAttribute(impl.Proc.Attributes, "entrypoint"))
.FirstOrDefault();
Debug.Assert(entrypoint_impl != null);
// other entrypoints can never reach an assertion, don't run AVN on them
foreach (Block b in entrypoint_impl.Blocks)
{
b.Cmds.OfType <CallCmd>()
.Where(cc => QKeyValue.FindBoolAttribute(cc.Attributes, AvUtil.AvnAnnotations.AvhEntryPointAttr))
.Iter(cc => entrypoints.Add(cc.callee));
}
// do reachability analysis on procedures
// prune deep (depth > K) implementations: treat as angelic
sliceAndRunAVN(prog, approximationDepth, entrypoints);
Stats.stop("fastavn");
Stats.printStats();
}
catch (Exception e)
{
//stacktrace containts source locations, confuses regressions that looks for AV_OUTPUT
Utils.Print(String.Format("FastAVN failed with: {0}", e.Message), Utils.PRINT_TAG.AV_OUTPUT);
Utils.Print(String.Format("FastAVN failed with: {0}", e.Message + e.StackTrace), Utils.PRINT_TAG.AV_DEBUG);
}
}
/// <summary>
/// Run AVN binary on sliced programs
/// </summary>
/// <param name="prog">Original program</param>
/// <param name="approximationDepth">Depth k beyond which angelic approximation is applied</param>
private static void sliceAndRunAVN(Program prog, int approximationDepth, HashSet <string> epNames)
{
edges = buildCallGraph(prog);
// Create a list of resources
var worklist = new ConcurrentBag <string>();
for (int i = 0; i < numThreads; i++)
{
worklist.Add(Directory.GetCurrentDirectory());
}
if (config != null)
{
foreach (var r in config.RemoteRoots)
{
remotedirs.Add(r.dir);
for (int i = 0; i < r.Threads; i++)
{
worklist.Add(r.dir);
}
}
}
worklist = Shuffle(worklist);
// Install FASTAVN
foreach (var rd in remotedirs)
{
Console.WriteLine("Installing on {0}", rd);
Directory.CreateDirectory(Path.Combine(rd, "fastavn"));
RemoteExec.CopyFolder(Path.GetDirectoryName(avnPath), Path.Combine(rd, "fastavn"), true);
}
// max threads
var threadsToSpawn = worklist.Count;
// semaphore for limiting at most numThreads threads running at one time on local machine
var sem = new Semaphore(numThreads, numThreads);
// entrypoints
var entrypoints = new ConcurrentBag <Implementation>(prog.TopLevelDeclarations.OfType <Implementation>()
.Where(impl => epNames.Contains(impl.Name)));
// deadline
if (deadline > 0)
{
deadline = deadline - (int)((DateTime.Now - startingTime).TotalSeconds + 0.5);
if (deadline < 0)
{
deadline = 1;
}
}
if (deadline > 100)
{
var timeouttask = new System.Threading.Tasks.Task(() =>
{
System.Threading.Thread.Sleep((deadline - 100) * 1000);
Console.WriteLine("FastAvn deadline reached; consolidating results");
deadlineReached = true;
KillSpawnedProcesses();
// Sleep for 2 seconds
System.Threading.Thread.Sleep(2 * 1000);
// collate bugs
lock (fslock)
{
if (printingOutput)
{
return;
}
printingOutput = true;
printBugs(ref mergedBugs, epNames.Count);
mergeBugs(epNames);
}
// Kill self
Process.GetCurrentProcess().Kill();
});
timeouttask.Start();
}
else if (deadline != 0)
{
Console.WriteLine("Ignoring small deadline of {0} seconds", deadline);
}
var threads = new List <Thread>();
for (int i = 0; i < threadsToSpawn; i++)
{
var w = new Worker(prog, entrypoints, worklist, sem);
threads.Add(new Thread(new ThreadStart(w.Run)));
}
threads.Iter(t => t.Start());
threads.Iter(t => t.Join());
if (Driver.createEntryPointBplsOnly)
{
Console.WriteLine("Early exit due to /createEntryPointBplsOnly");
return;
}
lock (fslock)
{
if (printingOutput)
{
return;
}
printingOutput = true;
printBugs(ref mergedBugs, epNames.Count);
mergeBugs(epNames);
}
}