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|
//-----------------------------------------------------------------------------
//
// Copyright (C) Microsoft Corporation. All Rights Reserved.
//
//-----------------------------------------------------------------------------
//---------------------------------------------------------------------------------------------
// OnlyBoogie OnlyBoogie.ssc
// - main program for taking a BPL program and verifying it
//---------------------------------------------------------------------------------------------
namespace Microsoft.Boogie {
using System;
using System.IO;
using System.Collections;
using System.Collections.Generic;
using PureCollections;
using Microsoft.Boogie;
using Microsoft.Boogie.AbstractInterpretation;
using System.Diagnostics.Contracts;
using System.Diagnostics;
using VC;
using AI = Microsoft.AbstractInterpretationFramework;
using BoogiePL = Microsoft.Boogie;
/*
The following assemblies are referenced because they are needed at runtime, not at compile time:
BaseTypes
Provers.Z3
System.Compiler.Framework
*/
public class OnlyBoogie {
// ------------------------------------------------------------------------
// Main
public static void Main(string[] args) {
Contract.Requires(cce.NonNullElements(args));
CommandLineOptions.Install(new CommandLineOptions());
CommandLineOptions.Clo.RunningBoogieFromCommandLine = true;
if (!CommandLineOptions.Clo.Parse(args)) {
goto END;
}
if (CommandLineOptions.Clo.Files.Count == 0) {
ErrorWriteLine("*** Error: No input files were specified.");
goto END;
}
if (CommandLineOptions.Clo.XmlSink != null) {
string errMsg = CommandLineOptions.Clo.XmlSink.Open();
if (errMsg != null) {
ErrorWriteLine("*** Error: " + errMsg);
goto END;
}
}
if (!CommandLineOptions.Clo.DontShowLogo) {
Console.WriteLine(CommandLineOptions.Clo.Version);
}
if (CommandLineOptions.Clo.ShowEnv == CommandLineOptions.ShowEnvironment.Always) {
Console.WriteLine("---Command arguments");
foreach (string arg in args) {
Contract.Assert(arg != null);
Console.WriteLine(arg);
}
Console.WriteLine("--------------------");
}
Helpers.ExtraTraceInformation("Becoming sentient");
foreach (string file in CommandLineOptions.Clo.Files) {
Contract.Assert(file != null);
string extension = Path.GetExtension(file);
if (extension != null) {
extension = extension.ToLower();
}
if (extension != ".bpl") {
ErrorWriteLine("*** Error: '{0}': Filename extension '{1}' is not supported. Input files must be BoogiePL programs (.bpl).", file,
extension == null ? "" : extension);
goto END;
}
}
ProcessFiles(CommandLineOptions.Clo.Files);
END:
if (CommandLineOptions.Clo.XmlSink != null) {
CommandLineOptions.Clo.XmlSink.Close();
}
if (CommandLineOptions.Clo.Wait) {
Console.WriteLine("Press Enter to exit.");
Console.ReadLine();
}
}
public static void ErrorWriteLine(string s) {
Contract.Requires(s != null);
if (!s.Contains("Error: ") && !s.Contains("Error BP")) {
Console.WriteLine(s);
return;
}
// split the string up into its first line and the remaining lines
string remaining = null;
int i = s.IndexOf('\r');
if (0 <= i) {
remaining = s.Substring(i + 1);
if (remaining.StartsWith("\n")) {
remaining = remaining.Substring(1);
}
s = s.Substring(0, i);
}
ConsoleColor col = Console.ForegroundColor;
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine(s);
Console.ForegroundColor = col;
if (remaining != null) {
Console.WriteLine(remaining);
}
}
public static void ErrorWriteLine(string format, params object[] args) {
Contract.Requires(format != null);
string s = string.Format(format, args);
ErrorWriteLine(s);
}
public static void AdvisoryWriteLine(string format, params object[] args) {
Contract.Requires(format != null);
ConsoleColor col = Console.ForegroundColor;
Console.ForegroundColor = ConsoleColor.Yellow;
Console.WriteLine(format, args);
Console.ForegroundColor = col;
}
enum FileType {
Unknown,
Cil,
Bpl,
Dafny
};
static void ProcessFiles(List<string> fileNames) {
Contract.Requires(cce.NonNullElements(fileNames));
using (XmlFileScope xf = new XmlFileScope(CommandLineOptions.Clo.XmlSink, fileNames[fileNames.Count - 1])) {
//BoogiePL.Errors.count = 0;
Program program = ParseBoogieProgram(fileNames, false);
if (program == null)
return;
if (CommandLineOptions.Clo.PrintFile != null) {
PrintBplFile(CommandLineOptions.Clo.PrintFile, program, false);
}
PipelineOutcome oc = ResolveAndTypecheck(program, fileNames[fileNames.Count - 1]);
if (oc != PipelineOutcome.ResolvedAndTypeChecked)
return;
//BoogiePL.Errors.count = 0;
// Do bitvector analysis
if (CommandLineOptions.Clo.DoBitVectorAnalysis) {
Microsoft.Boogie.BitVectorAnalysis.DoBitVectorAnalysis(program);
PrintBplFile(CommandLineOptions.Clo.BitVectorAnalysisOutputBplFile, program, false);
return;
}
oc = EliminateDeadVariablesAndInline(program);
//BoogiePL.Errors.count = 0;
int errorCount, verified, inconclusives, timeOuts, outOfMemories;
oc = InferAndVerify(program, out errorCount, out verified, out inconclusives, out timeOuts, out outOfMemories);
switch (oc) {
case PipelineOutcome.Done:
case PipelineOutcome.VerificationCompleted:
WriteTrailer(verified, errorCount, inconclusives, timeOuts, outOfMemories);
break;
default:
break;
}
}
}
static void PrintBplFile(string filename, Program program, bool allowPrintDesugaring) {
Contract.Requires(program != null);
Contract.Requires(filename != null);
bool oldPrintDesugaring = CommandLineOptions.Clo.PrintDesugarings;
if (!allowPrintDesugaring) {
CommandLineOptions.Clo.PrintDesugarings = false;
}
using (TokenTextWriter writer = filename == "-" ?
new TokenTextWriter("<console>", Console.Out) :
new TokenTextWriter(filename)) {
if (CommandLineOptions.Clo.ShowEnv != CommandLineOptions.ShowEnvironment.Never) {
writer.WriteLine("// " + CommandLineOptions.Clo.Version);
writer.WriteLine("// " + CommandLineOptions.Clo.Environment);
}
writer.WriteLine();
program.Emit(writer);
}
CommandLineOptions.Clo.PrintDesugarings = oldPrintDesugaring;
}
static bool ProgramHasDebugInfo(Program program) {
Contract.Requires(program != null);
// We inspect the last declaration because the first comes from the prelude and therefore always has source context.
return program.TopLevelDeclarations.Count > 0 &&
((cce.NonNull(program.TopLevelDeclarations)[program.TopLevelDeclarations.Count - 1]).tok.IsValid);
}
/// <summary>
/// Inform the user about something and proceed with translation normally.
/// Print newline after the message.
/// </summary>
public static void Inform(string s) {
if (!CommandLineOptions.Clo.Trace) {
return;
}
Console.WriteLine(s);
}
static void WriteTrailer(int verified, int errors, int inconclusives, int timeOuts, int outOfMemories) {
Contract.Requires(0 <= errors && 0 <= inconclusives && 0 <= timeOuts && 0 <= outOfMemories);
Console.WriteLine();
if (CommandLineOptions.Clo.vcVariety == CommandLineOptions.VCVariety.Doomed) {
Console.Write("{0} finished with {1} credible, {2} doomed{3}", CommandLineOptions.Clo.DescriptiveToolName, verified, errors, errors == 1 ? "" : "s");
} else {
Console.Write("{0} finished with {1} verified, {2} error{3}", CommandLineOptions.Clo.DescriptiveToolName, verified, errors, errors == 1 ? "" : "s");
}
if (inconclusives != 0) {
Console.Write(", {0} inconclusive{1}", inconclusives, inconclusives == 1 ? "" : "s");
}
if (timeOuts != 0) {
Console.Write(", {0} time out{1}", timeOuts, timeOuts == 1 ? "" : "s");
}
if (outOfMemories != 0) {
Console.Write(", {0} out of memory", outOfMemories);
}
Console.WriteLine();
Console.Out.Flush();
}
static void ReportBplError(Absy node, string message, bool error, bool showBplLocation) {
Contract.Requires(message != null);
Contract.Requires(node != null);
IToken tok = node.tok;
string s;
if (tok != null && showBplLocation) {
s = string.Format("{0}({1},{2}): {3}", tok.filename, tok.line, tok.col, message);
} else {
s = message;
}
if (error) {
ErrorWriteLine(s);
} else {
Console.WriteLine(s);
}
}
/// <summary>
/// Parse the given files into one Boogie program. If an I/O or parse error occurs, an error will be printed
/// and null will be returned. On success, a non-null program is returned.
/// </summary>
static Program ParseBoogieProgram(List<string> fileNames, bool suppressTraceOutput) {
Contract.Requires(cce.NonNullElements(fileNames));
//BoogiePL.Errors.count = 0;
Program program = null;
bool okay = true;
for (int fileId = 0; fileId < fileNames.Count; fileId++) {
string bplFileName = fileNames[fileId];
if (!suppressTraceOutput) {
if (CommandLineOptions.Clo.XmlSink != null) {
CommandLineOptions.Clo.XmlSink.WriteFileFragment(bplFileName);
}
if (CommandLineOptions.Clo.Trace) {
Console.WriteLine("Parsing " + bplFileName);
}
}
Program programSnippet;
int errorCount;
try {
var defines = new List<string>() { "FILE_" + fileId };
errorCount = BoogiePL.Parser.Parse(bplFileName, defines, out programSnippet);
if (programSnippet == null || errorCount != 0) {
Console.WriteLine("{0} parse errors detected in {1}", errorCount, bplFileName);
okay = false;
continue;
}
} catch (IOException e) {
ErrorWriteLine("Error opening file \"{0}\": {1}", bplFileName, e.Message);
okay = false;
continue;
}
if (program == null) {
program = programSnippet;
} else if (programSnippet != null) {
program.TopLevelDeclarations.AddRange(programSnippet.TopLevelDeclarations);
}
}
if (!okay) {
return null;
} else if (program == null) {
return new Program();
} else {
return program;
}
}
enum PipelineOutcome {
Done,
ResolutionError,
TypeCheckingError,
ResolvedAndTypeChecked,
FatalError,
VerificationCompleted
}
/// <summary>
/// Resolves and type checks the given Boogie program. Any errors are reported to the
/// console. Returns:
/// - Done if no errors occurred, and command line specified no resolution or no type checking.
/// - ResolutionError if a resolution error occurred
/// - TypeCheckingError if a type checking error occurred
/// - ResolvedAndTypeChecked if both resolution and type checking succeeded
/// </summary>
static PipelineOutcome ResolveAndTypecheck(Program program, string bplFileName) {
Contract.Requires(program != null);
Contract.Requires(bplFileName != null);
// ---------- Resolve ------------------------------------------------------------
if (CommandLineOptions.Clo.NoResolve) {
return PipelineOutcome.Done;
}
int errorCount = program.Resolve();
if (errorCount != 0) {
Console.WriteLine("{0} name resolution errors detected in {1}", errorCount, bplFileName);
return PipelineOutcome.ResolutionError;
}
// ---------- Type check ------------------------------------------------------------
if (CommandLineOptions.Clo.NoTypecheck) {
return PipelineOutcome.Done;
}
errorCount = program.Typecheck();
if (errorCount != 0) {
Console.WriteLine("{0} type checking errors detected in {1}", errorCount, bplFileName);
return PipelineOutcome.TypeCheckingError;
}
if (CommandLineOptions.Clo.PrintFile != null && CommandLineOptions.Clo.PrintDesugarings) {
// if PrintDesugaring option is engaged, print the file here, after resolution and type checking
PrintBplFile(CommandLineOptions.Clo.PrintFile, program, true);
}
return PipelineOutcome.ResolvedAndTypeChecked;
}
static PipelineOutcome EliminateDeadVariablesAndInline(Program program) {
Contract.Requires(program != null);
// Eliminate dead variables
Microsoft.Boogie.UnusedVarEliminator.Eliminate(program);
// Collect mod sets
if (CommandLineOptions.Clo.DoModSetAnalysis) {
Microsoft.Boogie.ModSetCollector.DoModSetAnalysis(program);
}
// Coalesce blocks
if (CommandLineOptions.Clo.CoalesceBlocks) {
Microsoft.Boogie.BlockCoalescer.CoalesceBlocks(program);
}
// Inline
// In Spec#, there was no run-time test. The type was just List<Declaration!>
List<Declaration> TopLevelDeclarations = cce.NonNull(program.TopLevelDeclarations);
if (CommandLineOptions.Clo.ProcedureInlining != CommandLineOptions.Inlining.None) {
bool inline = false;
foreach (Declaration d in TopLevelDeclarations) {
if (d.FindExprAttribute("inline") != null) {
inline = true;
}
}
if (inline && CommandLineOptions.Clo.LazyInlining == 0 && CommandLineOptions.Clo.StratifiedInlining == 0) {
foreach (Declaration d in TopLevelDeclarations) {
Implementation impl = d as Implementation;
if (impl != null) {
impl.OriginalBlocks = impl.Blocks;
impl.OriginalLocVars = impl.LocVars;
}
}
foreach (Declaration d in TopLevelDeclarations) {
Implementation impl = d as Implementation;
if (impl != null && !impl.SkipVerification) {
Inliner.ProcessImplementation(program, impl);
}
}
foreach (Declaration d in TopLevelDeclarations) {
Implementation impl = d as Implementation;
if (impl != null) {
impl.OriginalBlocks = null;
impl.OriginalLocVars = null;
}
}
}
}
return PipelineOutcome.Done;
}
/// <summary>
/// Given a resolved and type checked Boogie program, infers invariants for the program
/// and then attempts to verify it. Returns:
/// - Done if command line specified no verification
/// - FatalError if a fatal error occurred, in which case an error has been printed to console
/// - VerificationCompleted if inference and verification completed, in which the out
/// parameters contain meaningful values
/// </summary>
static PipelineOutcome InferAndVerify(Program program,
out int errorCount, out int verified, out int inconclusives, out int timeOuts, out int outOfMemories) {
Contract.Requires(program != null);
Contract.Ensures(0 <= Contract.ValueAtReturn(out inconclusives) && 0 <= Contract.ValueAtReturn(out timeOuts));
errorCount = verified = inconclusives = timeOuts = outOfMemories = 0;
// ---------- Infer invariants --------------------------------------------------------
// Abstract interpretation -> Always use (at least) intervals, if not specified otherwise (e.g. with the "/noinfer" switch)
Microsoft.Boogie.AbstractInterpretation.AbstractInterpretation.RunAbstractInterpretation(program);
if (CommandLineOptions.Clo.ContractInfer) {
Houdini.Houdini houdini = new Houdini.Houdini(program, true);
Houdini.HoudiniOutcome outcome = houdini.PerformHoudiniInference();
Console.WriteLine("Assignment computed by Houdini:");
foreach (var x in outcome.assignment) {
Console.WriteLine(x.Key + " = " + x.Value);
}
if (CommandLineOptions.Clo.Trace) {
Console.WriteLine("Prover time = " + Houdini.HoudiniSession.proverTime);
}
errorCount = outcome.ErrorCount;
verified = outcome.Verified;
inconclusives = outcome.Inconclusives;
timeOuts = outcome.TimeOuts;
outOfMemories = 0;
return PipelineOutcome.Done;
}
if (CommandLineOptions.Clo.LoopUnrollCount != -1) {
program.UnrollLoops(CommandLineOptions.Clo.LoopUnrollCount);
}
Dictionary<string, Dictionary<string, Block>> extractLoopMappingInfo = null;
if (CommandLineOptions.Clo.ExtractLoops)
{
extractLoopMappingInfo = program.ExtractLoops();
}
if (CommandLineOptions.Clo.PrintInstrumented) {
program.Emit(new TokenTextWriter(Console.Out));
}
if (CommandLineOptions.Clo.ExpandLambdas) {
LambdaHelper.ExpandLambdas(program);
//PrintBplFile ("-", program, true);
}
// ---------- Verify ------------------------------------------------------------
if (!CommandLineOptions.Clo.Verify) {
return PipelineOutcome.Done;
}
#region Verify each implementation
#if ROB_DEBUG
string now = DateTime.Now.ToString().Replace(' ','-').Replace('/','-').Replace(':','-');
System.IO.StreamWriter w = new System.IO.StreamWriter(@"\temp\batch_"+now+".bpl");
program.Emit(new TokenTextWriter(w));
w.Close();
#endif
ConditionGeneration vcgen = null;
try {
if (CommandLineOptions.Clo.vcVariety == CommandLineOptions.VCVariety.Doomed) {
vcgen = new DCGen(program, CommandLineOptions.Clo.SimplifyLogFilePath, CommandLineOptions.Clo.SimplifyLogFileAppend);
} else if(CommandLineOptions.Clo.StratifiedInlining > 0) {
vcgen = new StratifiedVCGen(program, CommandLineOptions.Clo.SimplifyLogFilePath, CommandLineOptions.Clo.SimplifyLogFileAppend);
} else {
vcgen = new VCGen(program, CommandLineOptions.Clo.SimplifyLogFilePath, CommandLineOptions.Clo.SimplifyLogFileAppend);
}
} catch (ProverException e) {
ErrorWriteLine("Fatal Error: ProverException: {0}", e);
return PipelineOutcome.FatalError;
}
// operate on a stable copy, in case it gets updated while we're running
var decls = program.TopLevelDeclarations.ToArray();
foreach (Declaration decl in decls) {
Contract.Assert(decl != null);
Implementation impl = decl as Implementation;
if (impl != null && CommandLineOptions.Clo.UserWantsToCheckRoutine(cce.NonNull(impl.Name)) && !impl.SkipVerification) {
List<Counterexample/*!*/>/*?*/ errors;
DateTime start = new DateTime(); // to please compiler's definite assignment rules
if (CommandLineOptions.Clo.Trace || CommandLineOptions.Clo.XmlSink != null) {
start = DateTime.Now;
if (CommandLineOptions.Clo.Trace) {
Console.WriteLine();
Console.WriteLine("Verifying {0} ...", impl.Name);
}
if (CommandLineOptions.Clo.XmlSink != null) {
CommandLineOptions.Clo.XmlSink.WriteStartMethod(impl.Name, start);
}
}
VCGen.Outcome outcome;
try {
if (CommandLineOptions.Clo.inferLeastForUnsat != null)
{
var svcgen = vcgen as VC.StratifiedVCGen;
Debug.Assert(svcgen != null);
var ss = new HashSet<string>();
foreach (var tdecl in program.TopLevelDeclarations)
{
var c = tdecl as Constant;
if (c == null || !c.Name.StartsWith(CommandLineOptions.Clo.inferLeastForUnsat)) continue;
ss.Add(c.Name);
}
outcome = svcgen.FindLeastToVerify(impl, program, ref ss);
errors = new List<Counterexample>();
Console.Write("Result: ");
foreach (var s in ss)
{
Console.Write("{0} ", s);
}
Console.WriteLine();
}
else
{
outcome = vcgen.VerifyImplementation(impl, program, out errors);
}
} catch (VCGenException e) {
ReportBplError(impl, String.Format("Error BP5010: {0} Encountered in implementation {1}.", e.Message, impl.Name), true, true);
errors = null;
outcome = VCGen.Outcome.Inconclusive;
} catch (UnexpectedProverOutputException upo) {
AdvisoryWriteLine("Advisory: {0} SKIPPED because of internal error: unexpected prover output: {1}", impl.Name, upo.Message);
errors = null;
outcome = VCGen.Outcome.Inconclusive;
}
string timeIndication = "";
DateTime end = DateTime.Now;
TimeSpan elapsed = end - start;
if (CommandLineOptions.Clo.Trace || CommandLineOptions.Clo.XmlSink != null) {
if (CommandLineOptions.Clo.Trace) {
timeIndication = string.Format(" [{0} s] ", elapsed.TotalSeconds);
}
}
switch (outcome) {
default:
Contract.Assert(false); // unexpected outcome
throw new cce.UnreachableException();
case VCGen.Outcome.ReachedBound:
Inform(String.Format("{0}verified", timeIndication));
Console.WriteLine(string.Format("Stratified Inlining: Reached recursion bound of {0}", CommandLineOptions.Clo.RecursionBound));
verified++;
break;
case VCGen.Outcome.Correct:
if (CommandLineOptions.Clo.vcVariety == CommandLineOptions.VCVariety.Doomed) {
Inform(String.Format("{0}credible", timeIndication));
verified++;
} else {
Inform(String.Format("{0}verified", timeIndication));
verified++;
}
break;
case VCGen.Outcome.TimedOut:
timeOuts++;
Inform(String.Format("{0}timed out", timeIndication));
break;
case VCGen.Outcome.OutOfMemory:
outOfMemories++;
Inform(String.Format("{0}out of memory", timeIndication));
break;
case VCGen.Outcome.Inconclusive:
inconclusives++;
Inform(String.Format("{0}inconclusive", timeIndication));
break;
case VCGen.Outcome.Errors:
if (CommandLineOptions.Clo.vcVariety == CommandLineOptions.VCVariety.Doomed) {
Inform(String.Format("{0}doomed", timeIndication));
errorCount++;
} //else {
Contract.Assert(errors != null); // guaranteed by postcondition of VerifyImplementation
{
// BP1xxx: Parsing errors
// BP2xxx: Name resolution errors
// BP3xxx: Typechecking errors
// BP4xxx: Abstract interpretation errors (Is there such a thing?)
// BP5xxx: Verification errors
if (CommandLineOptions.Clo.ExtractLoops && (vcgen is VCGen))
{
for (int i = 0; i < errors.Count; i++)
{
errors[i] = (vcgen as VCGen).extractLoopTrace(errors[i], impl.Name, program, extractLoopMappingInfo);
}
}
errors.Sort(new CounterexampleComparer());
foreach (Counterexample error in errors) {
if (error is CallCounterexample) {
CallCounterexample err = (CallCounterexample)error;
if (!CommandLineOptions.Clo.ForceBplErrors && err.FailingRequires.ErrorMessage != null) {
ReportBplError(err.FailingRequires, err.FailingRequires.ErrorMessage, true, false);
} else {
ReportBplError(err.FailingCall, "Error BP5002: A precondition for this call might not hold.", true, true);
ReportBplError(err.FailingRequires, "Related location: This is the precondition that might not hold.", false, true);
}
if (CommandLineOptions.Clo.XmlSink != null) {
CommandLineOptions.Clo.XmlSink.WriteError("precondition violation", err.FailingCall.tok, err.FailingRequires.tok, error.Trace);
}
} else if (error is ReturnCounterexample) {
ReturnCounterexample err = (ReturnCounterexample)error;
if (!CommandLineOptions.Clo.ForceBplErrors && err.FailingEnsures.ErrorMessage != null) {
ReportBplError(err.FailingEnsures, err.FailingEnsures.ErrorMessage, true, false);
} else {
ReportBplError(err.FailingReturn, "Error BP5003: A postcondition might not hold on this return path.", true, true);
ReportBplError(err.FailingEnsures, "Related location: This is the postcondition that might not hold.", false, true);
}
if (CommandLineOptions.Clo.XmlSink != null) {
CommandLineOptions.Clo.XmlSink.WriteError("postcondition violation", err.FailingReturn.tok, err.FailingEnsures.tok, error.Trace);
}
} else // error is AssertCounterexample
{
AssertCounterexample err = (AssertCounterexample)error;
if (err.FailingAssert is LoopInitAssertCmd) {
ReportBplError(err.FailingAssert, "Error BP5004: This loop invariant might not hold on entry.", true, true);
if (CommandLineOptions.Clo.XmlSink != null) {
CommandLineOptions.Clo.XmlSink.WriteError("loop invariant entry violation", err.FailingAssert.tok, null, error.Trace);
}
} else if (err.FailingAssert is LoopInvMaintainedAssertCmd) {
// this assertion is a loop invariant which is not maintained
ReportBplError(err.FailingAssert, "Error BP5005: This loop invariant might not be maintained by the loop.", true, true);
if (CommandLineOptions.Clo.XmlSink != null) {
CommandLineOptions.Clo.XmlSink.WriteError("loop invariant maintenance violation", err.FailingAssert.tok, null, error.Trace);
}
} else {
if (!CommandLineOptions.Clo.ForceBplErrors && err.FailingAssert.ErrorMessage != null) {
ReportBplError(err.FailingAssert, err.FailingAssert.ErrorMessage, true, false);
} else if (err.FailingAssert.ErrorData is string) {
ReportBplError(err.FailingAssert, (string)err.FailingAssert.ErrorData, true, true);
} else {
ReportBplError(err.FailingAssert, "Error BP5001: This assertion might not hold.", true, true);
}
if (CommandLineOptions.Clo.XmlSink != null) {
CommandLineOptions.Clo.XmlSink.WriteError("assertion violation", err.FailingAssert.tok, null, error.Trace);
}
}
}
if (CommandLineOptions.Clo.EnhancedErrorMessages == 1) {
foreach (string info in error.relatedInformation) {
Contract.Assert(info != null);
Console.WriteLine(" " + info);
}
}
if (CommandLineOptions.Clo.ErrorTrace > 0) {
Console.WriteLine("Execution trace:");
error.Print(4);
}
if (CommandLineOptions.Clo.ModelViewFile != null) {
error.PrintModel();
}
errorCount++;
}
//}
Inform(String.Format("{0}error{1}", timeIndication, errors.Count == 1 ? "" : "s"));
}
break;
}
if (CommandLineOptions.Clo.XmlSink != null) {
CommandLineOptions.Clo.XmlSink.WriteEndMethod(outcome.ToString().ToLowerInvariant(), end, elapsed);
}
if (outcome == VCGen.Outcome.Errors || CommandLineOptions.Clo.Trace) {
Console.Out.Flush();
}
}
}
vcgen.Close();
cce.NonNull(CommandLineOptions.Clo.TheProverFactory).Close();
#endregion
return PipelineOutcome.VerificationCompleted;
}
}
}
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