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How to use UpdateServers method of Microsoft.Coyote.Actors.BugFinding.Tests.HeadChanged class

Best Coyote code snippet using Microsoft.Coyote.Actors.BugFinding.Tests.HeadChanged.UpdateServers

ChainReplicationTests.cs

Source:ChainReplicationTests.cs

...354            private void CorrectHeadFailureOnEntry()355            {356                this.Servers.RemoveAt(0);357                this.Monitor<InvariantMonitor>(358                    new InvariantMonitor.UpdateServers(this.Servers));359                this.Monitor<ServerResponseSeqMonitor>(360                    new ServerResponseSeqMonitor.UpdateServers(this.Servers));361                this.Head = this.Servers[0];362                this.SendEvent(this.Head, new BecomeHead(this.Id));363            }364            private void UpdateClients()365            {366                for (int i = 0; i < this.Clients.Count; i++)367                {368                    this.SendEvent(this.Clients[i], new Client.UpdateHeadTail(this.Head, this.Tail));369                }370                this.RaiseEvent(new Done());371            }372            private void UpdateFailureDetector()373            {374                this.SendEvent(this.FailureDetector, new FailureDetector.FailureCorrected(this.Servers));375            }376            [OnEntry(nameof(CorrectTailFailureOnEntry))]377            [OnEventGotoState(typeof(Done), typeof(WaitForFailure), nameof(UpdateFailureDetector))]378            [OnEventDoAction(typeof(TailChanged), nameof(UpdateClients))]379            private class CorrectTailFailure : State380            {381            }382            private void CorrectTailFailureOnEntry()383            {384                this.Servers.RemoveAt(this.Servers.Count - 1);385                this.Monitor<InvariantMonitor>(386                    new InvariantMonitor.UpdateServers(this.Servers));387                this.Monitor<ServerResponseSeqMonitor>(388                    new ServerResponseSeqMonitor.UpdateServers(this.Servers));389                this.Tail = this.Servers[this.Servers.Count - 1];390                this.SendEvent(this.Tail, new BecomeTail(this.Id));391            }392            [OnEntry(nameof(CorrectServerFailureOnEntry))]393            [OnEventGotoState(typeof(Done), typeof(WaitForFailure), nameof(UpdateFailureDetector))]394            [OnEventDoAction(typeof(FixSuccessor), nameof(UpdateClients))]395            [OnEventDoAction(typeof(FixPredecessor), nameof(ProcessFixPredecessor))]396            [OnEventDoAction(typeof(ChainReplicationServer.NewSuccInfo), nameof(SetLastUpdate))]397            [OnEventDoAction(typeof(Success), nameof(ProcessSuccess))]398            private class CorrectServerFailure : State399            {400            }401            private void CorrectServerFailureOnEntry()402            {403                this.Servers.RemoveAt(this.FaultyNodeIndex);404                this.Monitor<InvariantMonitor>(405                    new InvariantMonitor.UpdateServers(this.Servers));406                this.Monitor<ServerResponseSeqMonitor>(407                    new ServerResponseSeqMonitor.UpdateServers(this.Servers));408                this.RaiseEvent(new FixSuccessor());409            }410            private void ProcessFixPredecessor()411            {412                this.SendEvent(this.Servers[this.FaultyNodeIndex - 1], new ChainReplicationServer.NewSuccessor(413                    this.Id, this.Servers[this.FaultyNodeIndex], this.LastAckSent, this.LastUpdateReceivedSucc));414            }415            private void SetLastUpdate(Event e)416            {417                this.LastUpdateReceivedSucc = (e as418                    ChainReplicationServer.NewSuccInfo).LastUpdateReceivedSucc;419                this.LastAckSent = (e as420                    ChainReplicationServer.NewSuccInfo).LastAckSent;421                this.RaiseEvent(new FixPredecessor());422            }423            private void ProcessSuccess() => this.RaiseEvent(new Done());424        }425        private class ChainReplicationServer : StateMachine426        {427            internal class SetupEvent : Event428            {429                public int Id;430                public bool IsHead;431                public bool IsTail;432                public SetupEvent(int id, bool isHead, bool isTail)433                    : base()434                {435                    this.Id = id;436                    this.IsHead = isHead;437                    this.IsTail = isTail;438                }439            }440            internal class PredSucc : Event441            {442                public ActorId Predecessor;443                public ActorId Successor;444                public PredSucc(ActorId pred, ActorId succ)445                    : base()446                {447                    this.Predecessor = pred;448                    this.Successor = succ;449                }450            }451            internal class ForwardUpdate : Event452            {453                public ActorId Predecessor;454                public int NextSeqId;455                public ActorId Client;456                public int Key;457                public int Value;458                public ForwardUpdate(ActorId pred, int nextSeqId, ActorId client, int key, int val)459                    : base()460                {461                    this.Predecessor = pred;462                    this.NextSeqId = nextSeqId;463                    this.Client = client;464                    this.Key = key;465                    this.Value = val;466                }467            }468            internal class BackwardAck : Event469            {470                public int NextSeqId;471                public BackwardAck(int nextSeqId)472                    : base()473                {474                    this.NextSeqId = nextSeqId;475                }476            }477            internal class NewPredecessor : Event478            {479                public ActorId Main;480                public ActorId Predecessor;481                public NewPredecessor(ActorId main, ActorId pred)482                    : base()483                {484                    this.Main = main;485                    this.Predecessor = pred;486                }487            }488            internal class NewSuccessor : Event489            {490                public ActorId Main;491                public ActorId Successor;492                public int LastUpdateReceivedSucc;493                public int LastAckSent;494                public NewSuccessor(ActorId main, ActorId succ,495                    int lastUpdateReceivedSucc, int lastAckSent)496                    : base()497                {498                    this.Main = main;499                    this.Successor = succ;500                    this.LastUpdateReceivedSucc = lastUpdateReceivedSucc;501                    this.LastAckSent = lastAckSent;502                }503            }504            internal class NewSuccInfo : Event505            {506                public int LastUpdateReceivedSucc;507                public int LastAckSent;508                public NewSuccInfo(int lastUpdateReceivedSucc, int lastAckSent)509                    : base()510                {511                    this.LastUpdateReceivedSucc = lastUpdateReceivedSucc;512                    this.LastAckSent = lastAckSent;513                }514            }515            internal class ResponseToQuery : Event516            {517                public int Value;518                public ResponseToQuery(int val)519                    : base()520                {521                    this.Value = val;522                }523            }524            internal class ResponseToUpdate : Event525            {526            }527            private class Local : Event528            {529            }530            private int ServerId;531            private bool IsHead;532            private bool IsTail;533            private ActorId Predecessor;534            private ActorId Successor;535            private Dictionary<int, int> KeyValueStore;536            private List<int> History;537            private List<SentLog> SentHistory;538            private int NextSeqId;539            [Start]540            [OnEntry(nameof(InitOnEntry))]541            [OnEventGotoState(typeof(Local), typeof(WaitForRequest))]542            [OnEventDoAction(typeof(PredSucc), nameof(SetupPredSucc))]543            [DeferEvents(typeof(Client.Update), typeof(Client.Query),544                typeof(BackwardAck), typeof(ForwardUpdate))]545            private class Init : State546            {547            }548            private void InitOnEntry(Event e)549            {550                this.ServerId = (e as SetupEvent).Id;551                this.IsHead = (e as SetupEvent).IsHead;552                this.IsTail = (e as SetupEvent).IsTail;553                this.KeyValueStore = new Dictionary<int, int>();554                this.History = new List<int>();555                this.SentHistory = new List<SentLog>();556                this.NextSeqId = 0;557            }558            private void SetupPredSucc(Event e)559            {560                this.Predecessor = (e as PredSucc).Predecessor;561                this.Successor = (e as PredSucc).Successor;562                this.RaiseEvent(new Local());563            }564            [OnEventGotoState(typeof(Client.Update), typeof(ProcessUpdate), nameof(ProcessUpdateAction))]565            [OnEventGotoState(typeof(ForwardUpdate), typeof(ProcessFwdUpdate))]566            [OnEventGotoState(typeof(BackwardAck), typeof(ProcessBckAck))]567            [OnEventDoAction(typeof(Client.Query), nameof(ProcessQueryAction))]568            [OnEventDoAction(typeof(NewPredecessor), nameof(UpdatePredecessor))]569            [OnEventDoAction(typeof(NewSuccessor), nameof(UpdateSuccessor))]570            [OnEventDoAction(typeof(ChainReplicationMaster.BecomeHead), nameof(ProcessBecomeHead))]571            [OnEventDoAction(typeof(ChainReplicationMaster.BecomeTail), nameof(ProcessBecomeTail))]572            [OnEventDoAction(typeof(FailureDetector.Ping), nameof(SendPong))]573            private class WaitForRequest : State574            {575            }576            private void ProcessUpdateAction()577            {578                this.NextSeqId++;579                this.Assert(this.IsHead, "Server {0} is not head", this.ServerId);580            }581            private void ProcessQueryAction(Event e)582            {583                var client = (e as Client.Query).Client;584                var key = (e as Client.Query).Key;585                this.Assert(this.IsTail, "Server {0} is not tail", this.Id);586                if (this.KeyValueStore.ContainsKey(key))587                {588                    this.Monitor<ServerResponseSeqMonitor>(new ServerResponseSeqMonitor.ResponseToQuery(589                        this.Id, key, this.KeyValueStore[key]));590                    this.SendEvent(client, new ResponseToQuery(this.KeyValueStore[key]));591                }592                else593                {594                    this.SendEvent(client, new ResponseToQuery(-1));595                }596            }597            private void ProcessBecomeHead(Event e)598            {599                this.IsHead = true;600                this.Predecessor = this.Id;601                var target = (e as ChainReplicationMaster.BecomeHead).Target;602                this.SendEvent(target, new ChainReplicationMaster.HeadChanged());603            }604            private void ProcessBecomeTail(Event e)605            {606                this.IsTail = true;607                this.Successor = this.Id;608                for (int i = 0; i < this.SentHistory.Count; i++)609                {610                    this.Monitor<ServerResponseSeqMonitor>(new ServerResponseSeqMonitor.ResponseToUpdate(611                        this.Id, this.SentHistory[i].Key, this.SentHistory[i].Value));612                    this.SendEvent(this.SentHistory[i].Client, new ResponseToUpdate());613                    this.SendEvent(this.Predecessor, new BackwardAck(this.SentHistory[i].NextSeqId));614                }615                var target = (e as ChainReplicationMaster.BecomeTail).Target;616                this.SendEvent(target, new ChainReplicationMaster.TailChanged());617            }618            private void SendPong(Event e)619            {620                var target = (e as FailureDetector.Ping).Target;621                this.SendEvent(target, new FailureDetector.Pong());622            }623            private void UpdatePredecessor(Event e)624            {625                var main = (e as NewPredecessor).Main;626                this.Predecessor = (e as NewPredecessor).Predecessor;627                if (this.History.Count > 0)628                {629                    if (this.SentHistory.Count > 0)630                    {631                        this.SendEvent(main, new NewSuccInfo(632                            this.History[this.History.Count - 1],633                            this.SentHistory[0].NextSeqId));634                    }635                    else636                    {637                        this.SendEvent(main, new NewSuccInfo(638                            this.History[this.History.Count - 1],639                            this.History[this.History.Count - 1]));640                    }641                }642            }643            private void UpdateSuccessor(Event e)644            {645                var main = (e as NewSuccessor).Main;646                this.Successor = (e as NewSuccessor).Successor;647                var lastUpdateReceivedSucc = (e as NewSuccessor).LastUpdateReceivedSucc;648                var lastAckSent = (e as NewSuccessor).LastAckSent;649                if (this.SentHistory.Count > 0)650                {651                    for (int i = 0; i < this.SentHistory.Count; i++)652                    {653                        if (this.SentHistory[i].NextSeqId > lastUpdateReceivedSucc)654                        {655                            this.SendEvent(this.Successor, new ForwardUpdate(this.Id, this.SentHistory[i].NextSeqId,656                                this.SentHistory[i].Client, this.SentHistory[i].Key, this.SentHistory[i].Value));657                        }658                    }659                    int tempIndex = -1;660                    for (int i = this.SentHistory.Count - 1; i >= 0; i--)661                    {662                        if (this.SentHistory[i].NextSeqId == lastAckSent)663                        {664                            tempIndex = i;665                        }666                    }667                    for (int i = 0; i < tempIndex; i++)668                    {669                        this.SendEvent(this.Predecessor, new BackwardAck(this.SentHistory[0].NextSeqId));670                        this.SentHistory.RemoveAt(0);671                    }672                }673                this.SendEvent(main, new ChainReplicationMaster.Success());674            }675            [OnEntry(nameof(ProcessUpdateOnEntry))]676            [OnEventGotoState(typeof(Local), typeof(WaitForRequest))]677            private class ProcessUpdate : State678            {679            }680            private void ProcessUpdateOnEntry(Event e)681            {682                var client = (e as Client.Update).Client;683                var key = (e as Client.Update).Key;684                var value = (e as Client.Update).Value;685                if (this.KeyValueStore.ContainsKey(key))686                {687                    this.KeyValueStore[key] = value;688                }689                else690                {691                    this.KeyValueStore.Add(key, value);692                }693                this.History.Add(this.NextSeqId);694                this.Monitor<InvariantMonitor>(695                    new InvariantMonitor.HistoryUpdate(this.Id, new List<int>(this.History)));696                this.SentHistory.Add(new SentLog(this.NextSeqId, client, key, value));697                this.Monitor<InvariantMonitor>(698                    new InvariantMonitor.SentUpdate(this.Id, new List<SentLog>(this.SentHistory)));699                this.SendEvent(this.Successor, new ForwardUpdate(this.Id, this.NextSeqId, client, key, value));700                this.RaiseEvent(new Local());701            }702            [OnEntry(nameof(ProcessFwdUpdateOnEntry))]703            [OnEventGotoState(typeof(Local), typeof(WaitForRequest))]704            private class ProcessFwdUpdate : State705            {706            }707            private void ProcessFwdUpdateOnEntry(Event e)708            {709                var pred = (e as ForwardUpdate).Predecessor;710                var nextSeqId = (e as ForwardUpdate).NextSeqId;711                var client = (e as ForwardUpdate).Client;712                var key = (e as ForwardUpdate).Key;713                var value = (e as ForwardUpdate).Value;714                if (pred.Equals(this.Predecessor))715                {716                    this.NextSeqId = nextSeqId;717                    if (this.KeyValueStore.ContainsKey(key))718                    {719                        this.KeyValueStore[key] = value;720                    }721                    else722                    {723                        this.KeyValueStore.Add(key, value);724                    }725                    if (!this.IsTail)726                    {727                        this.History.Add(nextSeqId);728                        this.Monitor<InvariantMonitor>(729                            new InvariantMonitor.HistoryUpdate(this.Id, new List<int>(this.History)));730                        this.SentHistory.Add(new SentLog(this.NextSeqId, client, key, value));731                        this.Monitor<InvariantMonitor>(732                            new InvariantMonitor.SentUpdate(this.Id, new List<SentLog>(this.SentHistory)));733                        this.SendEvent(this.Successor, new ForwardUpdate(this.Id, this.NextSeqId, client, key, value));734                    }735                    else736                    {737                        if (!this.IsHead)738                        {739                            this.History.Add(nextSeqId);740                        }741                        this.Monitor<ServerResponseSeqMonitor>(new ServerResponseSeqMonitor.ResponseToUpdate(742                            this.Id, key, value));743                        this.SendEvent(client, new ResponseToUpdate());744                        this.SendEvent(this.Predecessor, new BackwardAck(nextSeqId));745                    }746                }747                this.RaiseEvent(new Local());748            }749            [OnEntry(nameof(ProcessBckAckOnEntry))]750            [OnEventGotoState(typeof(Local), typeof(WaitForRequest))]751            private class ProcessBckAck : State752            {753            }754            private void ProcessBckAckOnEntry(Event e)755            {756                var nextSeqId = (e as BackwardAck).NextSeqId;757                this.RemoveItemFromSent(nextSeqId);758                if (!this.IsHead)759                {760                    this.SendEvent(this.Predecessor, new BackwardAck(nextSeqId));761                }762                this.RaiseEvent(new Local());763            }764            private void RemoveItemFromSent(int seqId)765            {766                int removeIdx = -1;767                for (int i = this.SentHistory.Count - 1; i >= 0; i--)768                {769                    if (seqId == this.SentHistory[i].NextSeqId)770                    {771                        removeIdx = i;772                    }773                }774                if (removeIdx != -1)775                {776                    this.SentHistory.RemoveAt(removeIdx);777                }778            }779        }780        private class Client : StateMachine781        {782            internal class SetupEvent : Event783            {784                public int Id;785                public ActorId HeadNode;786                public ActorId TailNode;787                public int Value;788                public SetupEvent(int id, ActorId head, ActorId tail, int val)789                    : base()790                {791                    this.Id = id;792                    this.HeadNode = head;793                    this.TailNode = tail;794                    this.Value = val;795                }796            }797            internal class UpdateHeadTail : Event798            {799                public ActorId Head;800                public ActorId Tail;801                public UpdateHeadTail(ActorId head, ActorId tail)802                    : base()803                {804                    this.Head = head;805                    this.Tail = tail;806                }807            }808            internal class Update : Event809            {810                public ActorId Client;811                public int Key;812                public int Value;813                public Update(ActorId client, int key, int value)814                    : base()815                {816                    this.Client = client;817                    this.Key = key;818                    this.Value = value;819                }820            }821            internal class Query : Event822            {823                public ActorId Client;824                public int Key;825                public Query(ActorId client, int key)826                    : base()827                {828                    this.Client = client;829                    this.Key = key;830                }831            }832            private class Local : Event833            {834            }835            private class Done : Event836            {837            }838            private ActorId HeadNode;839            private ActorId TailNode;840            private int StartIn;841            private int Next;842            private Dictionary<int, int> KeyValueStore;843            [Start]844            [OnEntry(nameof(InitOnEntry))]845            [OnEventGotoState(typeof(Local), typeof(PumpUpdateRequests))]846            private class Init : State847            {848            }849            private void InitOnEntry(Event e)850            {851                this.HeadNode = (e as SetupEvent).HeadNode;852                this.TailNode = (e as SetupEvent).TailNode;853                this.StartIn = (e as SetupEvent).Value;854                this.Next = 1;855                this.KeyValueStore = new Dictionary<int, int>856                {857                    { 1 * this.StartIn, 100 },858                    { 2 * this.StartIn, 200 },859                    { 3 * this.StartIn, 300 },860                    { 4 * this.StartIn, 400 }861                };862                this.RaiseEvent(new Local());863            }864            [OnEntry(nameof(PumpUpdateRequestsOnEntry))]865            [OnEventGotoState(typeof(Local), typeof(PumpUpdateRequests), nameof(PumpRequestsLocalAction))]866            [OnEventGotoState(typeof(Done), typeof(PumpQueryRequests), nameof(PumpRequestsDoneAction))]867            [IgnoreEvents(typeof(ChainReplicationServer.ResponseToUpdate), typeof(ChainReplicationServer.ResponseToQuery))]868            private class PumpUpdateRequests : State869            {870            }871            private void PumpUpdateRequestsOnEntry()872            {873                this.SendEvent(this.HeadNode, new Update(this.Id, this.Next * this.StartIn,874                    this.KeyValueStore[this.Next * this.StartIn]));875                if (this.Next >= 3)876                {877                    this.RaiseEvent(new Done());878                }879                else880                {881                    this.RaiseEvent(new Local());882                }883            }884            [OnEntry(nameof(PumpQueryRequestsOnEntry))]885            [OnEventGotoState(typeof(Local), typeof(PumpQueryRequests), nameof(PumpRequestsLocalAction))]886            [IgnoreEvents(typeof(ChainReplicationServer.ResponseToUpdate), typeof(ChainReplicationServer.ResponseToQuery))]887            private class PumpQueryRequests : State888            {889            }890            private void PumpQueryRequestsOnEntry()891            {892                this.SendEvent(this.TailNode, new Query(this.Id, this.Next * this.StartIn));893                if (this.Next >= 3)894                {895                    this.RaiseHaltEvent();896                }897                else898                {899                    this.RaiseEvent(new Local());900                }901            }902            private void PumpRequestsLocalAction()903            {904                this.Next++;905            }906            private void PumpRequestsDoneAction()907            {908                this.Next = 1;909            }910        }911        private class InvariantMonitor : Monitor912        {913            internal class SetupEvent : Event914            {915                public List<ActorId> Servers;916                public SetupEvent(List<ActorId> servers)917                    : base()918                {919                    this.Servers = servers;920                }921            }922            internal class UpdateServers : Event923            {924                public List<ActorId> Servers;925                public UpdateServers(List<ActorId> servers)926                    : base()927                {928                    this.Servers = servers;929                }930            }931            internal class HistoryUpdate : Event932            {933                public ActorId Server;934                public List<int> History;935                public HistoryUpdate(ActorId server, List<int> history)936                    : base()937                {938                    this.Server = server;939                    this.History = history;940                }941            }942            internal class SentUpdate : Event943            {944                public ActorId Server;945                public List<SentLog> SentHistory;946                public SentUpdate(ActorId server, List<SentLog> sentHistory)947                    : base()948                {949                    this.Server = server;950                    this.SentHistory = sentHistory;951                }952            }953            private class Local : Event954            {955            }956            private List<ActorId> Servers;957            private Dictionary<ActorId, List<int>> History;958            private Dictionary<ActorId, List<int>> SentHistory;959            private List<int> TempSeq;960            private ActorId Next;961            private ActorId Prev;962            [Start]963            [OnEventGotoState(typeof(Local), typeof(WaitForUpdateMessage))]964            [OnEventDoAction(typeof(SetupEvent), nameof(Setup))]965            private class Init : State966            {967            }968            private void Setup(Event e)969            {970                this.Servers = (e as SetupEvent).Servers;971                this.History = new Dictionary<ActorId, List<int>>();972                this.SentHistory = new Dictionary<ActorId, List<int>>();973                this.TempSeq = new List<int>();974                this.RaiseEvent(new Local());975            }976            [OnEventDoAction(typeof(HistoryUpdate), nameof(CheckUpdatePropagationInvariant))]977            [OnEventDoAction(typeof(SentUpdate), nameof(CheckInprocessRequestsInvariant))]978            [OnEventDoAction(typeof(UpdateServers), nameof(ProcessUpdateServers))]979            private class WaitForUpdateMessage : State980            {981            }982            private void CheckUpdatePropagationInvariant(Event e)983            {984                var server = (e as HistoryUpdate).Server;985                var history = (e as HistoryUpdate).History;986                this.IsSorted(history);987                if (this.History.ContainsKey(server))988                {989                    this.History[server] = history;990                }991                else992                {993                    this.History.Add(server, history);994                }995                // HIST(i+1) <= HIST(i)996                this.GetNext(server);997                if (this.Next != null && this.History.ContainsKey(this.Next))998                {999                    this.CheckLessOrEqualThan(this.History[this.Next], this.History[server]);1000                }1001                // HIST(i) <= HIST(i-1)1002                this.GetPrev(server);1003                if (this.Prev != null && this.History.ContainsKey(this.Prev))1004                {1005                    this.CheckLessOrEqualThan(this.History[server], this.History[this.Prev]);1006                }1007            }1008            private void CheckInprocessRequestsInvariant(Event e)1009            {1010                this.ClearTempSeq();1011                var server = (e as SentUpdate).Server;1012                var sentHistory = (e as SentUpdate).SentHistory;1013                this.ExtractSeqId(sentHistory);1014                if (this.SentHistory.ContainsKey(server))1015                {1016                    this.SentHistory[server] = this.TempSeq;1017                }1018                else1019                {1020                    this.SentHistory.Add(server, this.TempSeq);1021                }1022                this.ClearTempSeq();1023                // HIST(i) == HIST(i+1) + SENT(i)1024                this.GetNext(server);1025                if (this.Next != null && this.History.ContainsKey(this.Next))1026                {1027                    this.MergeSeq(this.History[this.Next], this.SentHistory[server]);1028                    this.CheckEqual(this.History[server], this.TempSeq);1029                }1030                this.ClearTempSeq();1031                // HIST(i-1) == HIST(i) + SENT(i-1)1032                this.GetPrev(server);1033                if (this.Prev != null && this.History.ContainsKey(this.Prev))1034                {1035                    this.MergeSeq(this.History[server], this.SentHistory[this.Prev]);1036                    this.CheckEqual(this.History[this.Prev], this.TempSeq);1037                }1038                this.ClearTempSeq();1039            }1040            private void GetNext(ActorId curr)1041            {1042                this.Next = null;1043                for (int i = 1; i < this.Servers.Count; i++)1044                {1045                    if (this.Servers[i - 1].Equals(curr))1046                    {1047                        this.Next = this.Servers[i];1048                    }1049                }1050            }1051            private void GetPrev(ActorId curr)1052            {1053                this.Prev = null;1054                for (int i = 1; i < this.Servers.Count; i++)1055                {1056                    if (this.Servers[i].Equals(curr))1057                    {1058                        this.Prev = this.Servers[i - 1];1059                    }1060                }1061            }1062            private void ExtractSeqId(List<SentLog> seq)1063            {1064                this.ClearTempSeq();1065                for (int i = seq.Count - 1; i >= 0; i--)1066                {1067                    if (this.TempSeq.Count > 0)1068                    {1069                        this.TempSeq.Insert(0, seq[i].NextSeqId);1070                    }1071                    else1072                    {1073                        this.TempSeq.Add(seq[i].NextSeqId);1074                    }1075                }1076                this.IsSorted(this.TempSeq);1077            }1078            private void MergeSeq(List<int> seq1, List<int> seq2)1079            {1080                this.ClearTempSeq();1081                this.IsSorted(seq1);1082                if (seq1.Count is 0)1083                {1084                    this.TempSeq = seq2;1085                }1086                else if (seq2.Count is 0)1087                {1088                    this.TempSeq = seq1;1089                }1090                else1091                {1092                    for (int i = 0; i < seq1.Count; i++)1093                    {1094                        if (seq1[i] < seq2[0])1095                        {1096                            this.TempSeq.Add(seq1[i]);1097                        }1098                    }1099                    for (int i = 0; i < seq2.Count; i++)1100                    {1101                        this.TempSeq.Add(seq2[i]);1102                    }1103                }1104                this.IsSorted(this.TempSeq);1105            }1106            private void IsSorted(List<int> seq)1107            {1108                for (int i = 0; i < seq.Count - 1; i++)1109                {1110                    this.Assert(seq[i] < seq[i + 1], "Sequence is not sorted.");1111                }1112            }1113            private void CheckLessOrEqualThan(List<int> seq1, List<int> seq2)1114            {1115                this.IsSorted(seq1);1116                this.IsSorted(seq2);1117                for (int i = 0; i < seq1.Count; i++)1118                {1119                    if ((i == seq1.Count) || (i == seq2.Count))1120                    {1121                        break;1122                    }1123                    this.Assert(seq1[i] <= seq2[i], "{0} not less or equal than {1}.", seq1[i], seq2[i]);1124                }1125            }1126            private void CheckEqual(List<int> seq1, List<int> seq2)1127            {1128                this.IsSorted(seq1);1129                this.IsSorted(seq2);1130                for (int i = 0; i < seq1.Count; i++)1131                {1132                    if ((i == seq1.Count) || (i == seq2.Count))1133                    {1134                        break;1135                    }1136                    this.Assert(seq1[i] == seq2[i], "{0} not equal with {1}.", seq1[i], seq2[i]);1137                }1138            }1139            private void ClearTempSeq()1140            {1141                this.Assert(this.TempSeq.Count <= 6, "Temp sequence has more than 6 elements.");1142                this.TempSeq.Clear();1143                this.Assert(this.TempSeq.Count is 0, "Temp sequence is not cleared.");1144            }1145            private void ProcessUpdateServers(Event e)1146            {1147                this.Servers = (e as UpdateServers).Servers;1148            }1149        }1150        private class ServerResponseSeqMonitor : Monitor1151        {1152            internal class SetupEvent : Event1153            {1154                public List<ActorId> Servers;1155                public SetupEvent(List<ActorId> servers)1156                    : base()1157                {1158                    this.Servers = servers;1159                }1160            }1161            internal class UpdateServers : Event1162            {1163                public List<ActorId> Servers;1164                public UpdateServers(List<ActorId> servers)1165                    : base()1166                {1167                    this.Servers = servers;1168                }1169            }1170            internal class ResponseToUpdate : Event1171            {1172                public ActorId Tail;1173                public int Key;1174                public int Value;1175                public ResponseToUpdate(ActorId tail, int key, int val)1176                    : base()1177                {1178                    this.Tail = tail;1179                    this.Key = key;1180                    this.Value = val;1181                }1182            }1183            internal class ResponseToQuery : Event1184            {1185                public ActorId Tail;1186                public int Key;1187                public int Value;1188                public ResponseToQuery(ActorId tail, int key, int val)1189                    : base()1190                {1191                    this.Tail = tail;1192                    this.Key = key;1193                    this.Value = val;1194                }1195            }1196            private class Local : Event1197            {1198            }1199            private List<ActorId> Servers;1200            private Dictionary<int, int> LastUpdateResponse;1201            [Start]1202            [OnEventGotoState(typeof(Local), typeof(Wait))]1203            [OnEventDoAction(typeof(SetupEvent), nameof(Setup))]1204            private class Init : State1205            {1206            }1207            private void Setup(Event e)1208            {1209                this.Servers = (e as SetupEvent).Servers;1210                this.LastUpdateResponse = new Dictionary<int, int>();1211                this.RaiseEvent(new Local());1212            }1213            [OnEventDoAction(typeof(ResponseToUpdate), nameof(ResponseToUpdateAction))]1214            [OnEventDoAction(typeof(ResponseToQuery), nameof(ResponseToQueryAction))]1215            [OnEventDoAction(typeof(UpdateServers), nameof(ProcessUpdateServers))]1216            private class Wait : State1217            {1218            }1219            private void ResponseToUpdateAction(Event e)1220            {1221                var tail = (e as ResponseToUpdate).Tail;1222                var key = (e as ResponseToUpdate).Key;1223                var value = (e as ResponseToUpdate).Value;1224                if (this.Servers.Contains(tail))1225                {1226                    if (this.LastUpdateResponse.ContainsKey(key))1227                    {1228                        this.LastUpdateResponse[key] = value;1229                    }1230                    else1231                    {1232                        this.LastUpdateResponse.Add(key, value);1233                    }1234                }1235            }1236            private void ResponseToQueryAction(Event e)1237            {1238                var tail = (e as ResponseToQuery).Tail;1239                var key = (e as ResponseToQuery).Key;1240                var value = (e as ResponseToQuery).Value;1241                if (this.Servers.Contains(tail))1242                {1243                    this.Assert(value == this.LastUpdateResponse[key], "Value {0} is not " +1244                        "equal to {1}", value, this.LastUpdateResponse[key]);1245                }1246            }1247            private void ProcessUpdateServers(Event e)1248            {1249                this.Servers = (e as UpdateServers).Servers;1250            }1251        }1252        [Theory(Timeout = 10000)]1253        [InlineData(323)]1254        public void TestSequenceNotSortedInChainReplicationProtocol(uint seed)1255        {1256            this.TestWithError(r =>1257            {1258                r.RegisterMonitor<InvariantMonitor>();1259                r.RegisterMonitor<ServerResponseSeqMonitor>();1260                r.CreateActor(typeof(Environment));1261            },1262            configuration: this.GetConfiguration()1263                .WithPrioritizationStrategy(true, 1)...

UpdateServers

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using Microsoft.Coyote.Actors.BugFinding.Tests;7{8    {9        static void Main(string[] args)10        {11            HeadChanged headChanged = new HeadChanged();12            headChanged.UpdateServers();13        }14    }15}16using System;17using System.Collections.Generic;18using System.Linq;19using System.Text;20using System.Threading.Tasks;21using Microsoft.Coyote.Actors.BugFinding.Tests;22{23    {24        static void Main(string[] args)25        {26            HeadChanged headChanged = new HeadChanged();27            headChanged.UpdateServers();28        }29    }30}31using System;32using System.Collections.Generic;33using System.Linq;34using System.Text;35using System.Threading.Tasks;36using Microsoft.Coyote.Actors.BugFinding.Tests;37{38    {39        static void Main(string[] args)40        {41            HeadChanged headChanged = new HeadChanged();42            headChanged.UpdateServers();43        }44    }45}46using System;47using System.Collections.Generic;48using System.Linq;49using System.Text;50using System.Threading.Tasks;51using Microsoft.Coyote.Actors.BugFinding.Tests;52{53    {54        static void Main(string[] args)55        {56            HeadChanged headChanged = new HeadChanged();57            headChanged.UpdateServers();58        }59    }60}61using System;62using System.Collections.Generic;63using System.Linq;64using System.Text;65using System.Threading.Tasks;66using Microsoft.Coyote.Actors.BugFinding.Tests;67{68    {69        static void Main(string[] args)70        {71            HeadChanged headChanged = new HeadChanged();72            headChanged.UpdateServers();73        }74    }75}

UpdateServers

Using AI Code Generation

1using Microsoft.Coyote.Actors.BugFinding.Tests;2using System;3using System.Collections.Generic;4using System.Linq;5using System.Text;6using System.Threading.Tasks;7using Microsoft.Coyote;8using Microsoft.Coyote.Actors;9using Microsoft.Coyote.Actors.BugFinding;10using Microsoft.Coyote.Actors.BugFinding.Tests;11using Microsoft.Coyote.Actors.BugFinding.Tests.HeadChanged;12using Microsoft.Coyote.Actors.BugFinding.Tests.HeadChanged.Test;13using Microsoft.Coyote.Actors.BugFinding.Tests.HeadChanged.Test.Events;14using Microsoft.Coyote.Actors.BugFinding.Tests.HeadChanged.Test.Machines;15using Microsoft.Coyote.Actors.BugFinding.Tests.HeadChanged.Test.Tasks;16using Microsoft.Coyote.Actors.BugFinding.Tests.HeadChanged.Test.Tasks.Events;17using Microsoft.Coyote.Actors.BugFinding.Tests.HeadChanged.Test.Tasks.Tasks;18using Microsoft.Coyote.Actors.BugFinding.Tests.HeadChanged.Test.Tasks.Tasks.Events;19using Microsoft.Coyote.Actors.BugFinding.Tests.HeadChanged.Test.Tasks.Tasks.Tasks;20using Microsoft.Coyote.Actors.BugFinding.Tests.HeadChanged.Test.Tasks.Tasks.Tasks.Events;21using Microsoft.Coyote.Actors.BugFinding.Tests.HeadChanged.Test.Tasks.Tasks.Tasks.Tasks;22using Microsoft.Coyote.Actors.BugFinding.Tests.HeadChanged.Test.Tasks.Tasks.Tasks.Tasks.Events;23using Microsoft.Coyote.Actors.BugFinding.Tests.HeadChanged.Test.Tasks.Tasks.Tasks.Tasks.Tasks;24using Microsoft.Coyote.Actors.BugFinding.Tests.HeadChanged.Test.Tasks.Tasks.Tasks.Tasks.Tasks.Events;25using Microsoft.Coyote.Actors.BugFinding.Tests.HeadChanged.Test.Tasks.Tasks.Tasks.Tasks.Tasks.Tasks;26using Microsoft.Coyote.Actors.BugFinding.Tests.HeadChanged.Test.Tasks.Tasks.Tasks.Tasks.Tasks.Tasks.Events;27using Microsoft.Coyote.Actors.BugFinding.Tests.HeadChanged.Test.Tasks.Tasks.Tasks.Tasks.Tasks.Tasks.Tasks;28using Microsoft.Coyote.Actors.BugFinding.Tests.HeadChanged.Test.Tasks.Tasks.Tasks.Tasks.Tasks.Tasks.Tasks.Events;29using Microsoft.Coyote.Actors.BugFinding.Tests.HeadChanged.Test.Tasks.Tasks.Tasks.Tasks.Tasks.Tasks.Tasks.Tasks.Tasks;30using Microsoft.Coyote.Actors.BugFinding.Tests.HeadChanged.Test.Tasks.Tasks.Tasks.Tasks.Tasks.Tasks.Tasks.Tasks.Tasks.Events;

UpdateServers

Using AI Code Generation

1using Microsoft.Coyote.Actors.BugFinding.Tests;2using System;3using System.Collections.Generic;4using System.Linq;5using System.Text;6using System.Threading.Tasks;7{8    {9        static void Main(string[] args)10        {11            HeadChanged headChanged = new HeadChanged();12            headChanged.UpdateServers();13        }14    }15}16   at Microsoft.Coyote.Actors.BugFinding.Tests.HeadChanged.UpdateServers()17   at BugFinding.Program.Main(String[] args) in C:\Users\user\Desktop\BugFinding\BugFinding\Program.cs:line 14

UpdateServers

Using AI Code Generation

1using Microsoft.Coyote.Actors.BugFinding.Tests;2using System;3using System.Collections.Generic;4using System.Linq;5using System.Text;6using System.Threading.Tasks;7{8    {9        static void Main(string[] args)10        {11            var head = new HeadChanged();12            head.UpdateServers(new List<string> { "Server1", "Server2" });13            head.UpdateServers(new List<string> { "Server3" });14        }15    }16}

UpdateServers

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Coyote;4using Microsoft.Coyote.Actors;5using Microsoft.Coyote.Actors.BugFinding.Tests;6{7    {8        static void Main(string[] args)9        {10            var config = Configuration.Create();11            config.MaxSchedulingSteps = 100000;12            config.MaxFairSchedulingSteps = 100000;13            config.MaxStepsFromAnyEntryToExit = 1000;14            config.EnableCycleDetection = true;15            config.EnableDataRaceDetection = true;16            config.EnableDeadlockDetection = true;17            config.EnableLivelockDetection = true;18            config.EnableOperationCanceledException = true;19            config.EnableObjectDisposedException = true;20            config.EnableActorShadowing = true;21            config.EnableActorGarbageCollection = true;22            config.EnableStateGraph = true;

UpdateServers

Using AI Code Generation

1{2    using System;3    using System.Threading.Tasks;4    using Microsoft.Coyote;5    using Microsoft.Coyote.Actors;6    using Microsoft.Coyote.Actors.BugFinding.Tests;7    {8        public static void Main()9        {10            RunAsync().Wait();11        }12        private static async Task RunAsync()13        {14            Runtime.RegisterMonitor(typeof(HeadChanged));15            var actor = Actor.CreateActor(typeof(RootActor));16            await actor.UpdateServers(2);17            await actor.UpdateServers(3);18            await actor.UpdateServers(4);19            await actor.UpdateServers(5);20            await actor.UpdateServers(6);21            await actor.UpdateServers(7);22            await actor.UpdateServers(8);23            await actor.UpdateServers(9);24            await actor.UpdateServers(10);25            await actor.UpdateServers(11);26            await actor.UpdateServers(12);27            await actor.UpdateServers(13);28            await actor.UpdateServers(14);29            await actor.UpdateServers(15);30            await actor.UpdateServers(16);31            await actor.UpdateServers(17);32            await actor.UpdateServers(18);33            await actor.UpdateServers(19);34            await actor.UpdateServers(20);35            await actor.UpdateServers(21);36            await actor.UpdateServers(22);37            await actor.UpdateServers(23);38            await actor.UpdateServers(24);39            await actor.UpdateServers(25);40            await actor.UpdateServers(26);41            await actor.UpdateServers(27);42            await actor.UpdateServers(28);43            await actor.UpdateServers(29);44            await actor.UpdateServers(30);45            await actor.UpdateServers(31);46            await actor.UpdateServers(32);47            await actor.UpdateServers(33);48            await actor.UpdateServers(34);49            await actor.UpdateServers(35);50            await actor.UpdateServers(36);51            await actor.UpdateServers(37);52            await actor.UpdateServers(38);53            await actor.UpdateServers(39);54            await actor.UpdateServers(40);55            await actor.UpdateServers(41);56            await actor.UpdateServers(42);57            await actor.UpdateServers(43);58            await actor.UpdateServers(44);59            await actor.UpdateServers(45);60            await actor.UpdateServers(46);61            await actor.UpdateServers(47);62            await actor.UpdateServers(48);63            await actor.UpdateServers(49);64            await actor.UpdateServers(50);65            await actor.UpdateServers(51);

UpdateServers

Using AI Code Generation

1using Microsoft.Coyote.Actors.BugFinding.Tests;2using Microsoft.Coyote.Actors.BugFinding.Tests.BugFindingTest;3using Microsoft.Coyote.Actors.BugFinding.Tests.BugFindingTest.Events;4using Microsoft.Coyote.Actors.BugFinding.Tests.BugFindingTest.Machines;5using Microsoft.Coyote.Actors.BugFinding.Tests.BugFindingTest.Machines.HeadChanged;6using Microsoft.Coyote.Actors.BugFinding.Tests.BugFindingTest.Machines.HeadChanged.Events;7using Microsoft.Coyote.Actors.BugFinding.Tests.BugFindingTest.Machines.HeadChanged.States;8using Microsoft.Coyote.Actors.BugFinding.Tests.BugFindingTest.Machines.HeadChanged.States.Head;9using Microsoft.Coyote.Actors.BugFinding.Tests.BugFindingTest.Machines.HeadChanged.States.Head.Tail;10using Microsoft.Coyote.Actors.BugFinding.Tests.BugFindingTest.Machines.HeadChanged.States.Head.Tail.Leg;11using Microsoft.Coyote.Actors.BugFinding.Tests.BugFindingTest.Machines.HeadChanged.States.Head.Tail.Leg.Tail;12using Microsoft.Coyote.Actors.BugFinding.Tests.BugFindingTest.Machines.HeadChanged.States.Head.Tail.Leg.Tail.Leg;13using Microsoft.Coyote.Actors.BugFinding.Tests.BugFindingTest.Machines.HeadChanged.States.Head.Tail.Leg.Tail.Leg.Leg;14using Microsoft.Coyote.Actors.BugFinding.Tests.BugFindingTest.Machines.HeadChanged.States.Head.Tail.Leg.Tail.Leg.Leg.Leg;15using Microsoft.Coyote.Actors.BugFinding.Tests.BugFindingTest.Machines.HeadChanged.States.Head.Tail.Leg.Tail.Leg.Leg.Leg.Leg;16using Microsoft.Coyote.Actors.BugFinding.Tests.BugFindingTest.Machines.HeadChanged.States.Head.Tail.Leg.Tail.Leg.Leg.Leg.Leg.Leg;17using Microsoft.Coyote.Actors.BugFinding.Tests.BugFindingTest.Machines.HeadChanged.States.Head.Tail.Leg.Tail.Leg.Leg.Leg.Leg.Leg.Leg;18using Microsoft.Coyote.Actors.BugFinding.Tests.BugFindingTest.Machines.HeadChanged.States.Head.Tail.Leg.Tail.Leg.Leg.Leg.Leg.Leg.Leg.Leg;

Automation Testing Tutorials

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