when i want to simulate a adhoc scene,which use 802.11a wifiphy ,i usually get an error - ns-3

Question

assert failed. cond="m_wifiPhy->m_currentEvent == 0", +23.801712798s 11 file=../src/wifi/model/phy-entity.cc, line=467
terminate called without an active exception
here is my code.I am a freshman in ns3,but i need get my simulation run correctly Eagerly.These days i am really exhausted to find the problem,and sttle it.So I really need someone to help me.
#include <fstream>
#include <iostream>
#include "ns3/core-module.h"
#include "ns3/network-module.h"
#include "ns3/internet-module.h"
#include "ns3/mobility-module.h"
#include "ns3/aodv-module.h"
#include "ns3/olsr-module.h"
#include "ns3/dsdv-module.h"
#include "ns3/dsr-module.h"
#include "ns3/applications-module.h"
#include "ns3/yans-wifi-helper.h"
#include "ns3/flow-monitor-module.h"
#include "ns3/animation-interface.h"
using namespace std;
using namespace ns3;
NS_LOG_COMPONENT_DEFINE ("constant-position-experiment");
void ReceivePacket (Ptr<Socket> socket)
{
NS_LOG_INFO ("Received one packet!");
Ptr<Packet> packet = socket->Recv ();
SocketIpTosTag tosTag;
NS_LOG_UNCOND (" received a packet!");
if (packet->RemovePacketTag (tosTag))
{
//NS_LOG_UNCOND (" TOS = " << (uint32_t)tosTag.GetTos ());
}
SocketIpTtlTag ttlTag;
if (packet->RemovePacketTag (ttlTag))
{
//NS_LOG_UNCOND (" TTL = " << (uint32_t)ttlTag.GetTtl ());
}
}
static void SendPacket (Ptr<Socket> socket, uint32_t pktSize,
uint128_t pktCount, Time pktInterval ,uint128_t counta)
{
if (pktCount > 0)
{
counta+=1;
socket->Send (Create<Packet> (pktSize));
Simulator::Schedule (pktInterval, &SendPacket,
socket, pktSize,pktCount - 1, pktInterval,counta);
NS_LOG_UNCOND (" send a packet!"<<(uint32_t)counta<<Simulator::Now());
}
else
{
socket->Close ();
}
}
int main(int argc,char*argv[])
{
int n=30;
double totaltime=4000000;
double settime=60;
double distance=35000;
string phyMode ("OfdmRate2_25MbpsBW5MHz");
string dataRate ("300kb/s");
uint64_t packetSize=512;
uint128_t packetCount =6530;
double packetInterval=0.05;
uint128_t counta(0);
uint32_t ipTos = 0;
bool ipRecvTos = true;
uint32_t ipTtl = 0;
bool ipRecvTtl = true;
//OfdmRate1_5MbpsBW5MHz
// OfdmRate2_25MbpsBW5MHz
// OfdmRate3MbpsBW5MHz
// OfdmRate4_5MbpsBW5MHz
// OfdmRate6MbpsBW5MHz
// OfdmRate9MbpsBW5MHz
// OfdmRate12MbpsBW5MHz
// OfdmRate13_5MbpsBW5MHz
// OfdmRate3MbpsBW10MHz
// OfdmRate4_5MbpsBW10MHz
// OfdmRate6MbpsBW10MHz
// OfdmRate9MbpsBW10MHz
// OfdmRate12MbpsBW10MHz
// OfdmRate18MbpsBW10MHz
// OfdmRate24MbpsBW10MHz
// OfdmRate27MbpsBW10MHz
// OfdmRate6Mbps
// OfdmRate9Mbps
// OfdmRate12Mbps
// OfdmRate18Mbps
// OfdmRate24Mbps
// OfdmRate36Mbps
// OfdmRate48Mbps
// OfdmRate54Mbps
CommandLine cmd (__FILE__);
cmd.AddValue ("distance", "the distance bettween nodes", distance);
cmd.AddValue ("settime", "olsr settime", settime);
cmd.AddValue ("phyMode", "olsr settime", phyMode);
cmd.AddValue ("dataRate", "olsr settime", dataRate);
cmd.Parse (argc, argv);
// LogComponentEnable("OnOffApplication",LOG_LEVEL_INFO);
NodeContainer c;
c.Create(n);
NodeContainer n0n23=NodeContainer(c.Get(0),c.Get(23));
NS_LOG_UNCOND ("distance:"<<distance<<"phymode: "<<phyMode<<"dataRate: "+dataRate);
//wifpyh wifchannel
WifiHelper wifi;
wifi.SetStandard (WIFI_STANDARD_80211a);
WifiMacHelper wifiMac;
YansWifiPhyHelper wifiPhy;
YansWifiChannelHelper wifiChannel;
wifiPhy.Set("TxGain",DoubleValue(4.5));
wifiPhy.Set("RxGain",DoubleValue(4.5));
//
wifiPhy.Set("RxSensitivity",DoubleValue(-90));
wifiPhy.Set("Antennas",UintegerValue(2));
wifiPhy.Set ("TxPowerStart",DoubleValue (37));
wifiPhy.Set ("TxPowerEnd", DoubleValue (37));
wifiPhy.Set ("RxNoiseFigure",DoubleValue (0));
wifiChannel.SetPropagationDelay ("ns3::ConstantSpeedPropagationDelayModel");
wifiChannel.AddPropagationLoss ("ns3::FriisPropagationLossModel","Frequency",DoubleValue(1.2e+09));
wifiPhy.SetChannel (wifiChannel.Create ());
wifiMac.SetType ("ns3::AdhocWifiMac");
wifi.SetRemoteStationManager ("ns3::ConstantRateWifiManager",
"DataMode",StringValue (phyMode),
"ControlMode",StringValue (phyMode));
NetDeviceContainer devices = wifi.Install (wifiPhy, wifiMac, c);
//mobility
MobilityHelper mobility;
mobility.SetPositionAllocator ("ns3::GridPositionAllocator",
"MinX", DoubleValue (0.0),
"MinY", DoubleValue (0.0),
"DeltaX", DoubleValue (distance),
"DeltaY", DoubleValue (distance),
"GridWidth", UintegerValue (5),
"LayoutType", StringValue ("RowFirst"));
mobility.SetMobilityModel ("ns3::RandomDirection2dMobilityModel",
"Bounds", RectangleValue (Rectangle (-200000, 200000, -200000, 200000)),
"Speed", StringValue ("ns3::ConstantRandomVariable[Constant=39]"),
"Pause", StringValue ("ns3::ConstantRandomVariable[Constant=2]"));
mobility.Install (c);
//internet
OlsrHelper olsr;
Ipv4ListRoutingHelper list;
list.Add (olsr, 10);
InternetStackHelper internet;
internet.SetRoutingHelper (list); // has effect on the next Install ()
internet.Install (c);
Ipv4AddressHelper addressAdhoc;
addressAdhoc.SetBase ("10.1.1.0", "255.255.255.0");
Ipv4InterfaceContainer interfaces;
interfaces = addressAdhoc.Assign (devices);
//application
NS_LOG_INFO ("Create sockets.");
//Receiver socket on n1
TypeId tid = TypeId::LookupByName ("ns3::UdpSocketFactory");
Ptr<Socket> recvSink = Socket::CreateSocket (c.Get (1), tid);
InetSocketAddress local = InetSocketAddress (Ipv4Address::GetAny (), 4477);
recvSink->SetIpRecvTos (ipRecvTos);
recvSink->SetIpRecvTtl (ipRecvTtl);
recvSink->Bind (local);
recvSink->SetRecvCallback (MakeCallback (&ReceivePacket));
//Sender socket on n0
Ptr<Socket> source = Socket::CreateSocket (c.Get (27), tid);
InetSocketAddress remote = InetSocketAddress (interfaces.GetAddress (1), 4477);
//Set socket options, it is also possible to set the options after the socket has been created/connected.
if (ipTos > 0)
{
source->SetIpTos (ipTos);
}
if (ipTtl > 0)
{
source->SetIpTtl (ipTtl);
}
source->Connect (remote);
//flowmonitor
string s1=phyMode.substr(8,3);
string s2=phyMode.substr(phyMode.length()-4,4);
string s3=dataRate.substr(0,dataRate.length()-2);
string filename=to_string(int(distance/1000))+"_"+s1+"_"+s2+"_"+s3;
Ptr<FlowMonitor> flowmon;
FlowMonitorHelper flowmonHelper;
flowmon = flowmonHelper.InstallAll ();
Ptr<OutputStreamWrapper> routingStream=Create<OutputStreamWrapper>(filename+"routes.tr",std::ios::out);
olsr.PrintRoutingTableAt(Seconds(40.0),c.Get(2),routingStream);
AnimationInterface anim ((filename+".xml"));
anim.SetMaxPktsPerTraceFile(99999999999999);
Time interPacketInterval = Seconds (packetInterval);
Simulator::ScheduleWithContext (source->GetNode ()->GetId (),
Seconds (1.0), &SendPacket,
source, packetSize, packetCount, interPacketInterval,counta);
Simulator::ScheduleWithContext (source->GetNode ()->GetId (),
Seconds (70.0), &SendPacket,
source, packetSize, packetCount, interPacketInterval,counta);
Simulator::ScheduleWithContext (source->GetNode ()->GetId (),
Seconds (30.0), &SendPacket,
source, packetSize, packetCount, interPacketInterval,counta);
Simulator::Stop (Seconds (totaltime));
Simulator::Run ();
Simulator::Destroy ();
flowmon->SerializeToXmlFile (filename+".flowmon", false, false);
// numPackets=0;
return 0;
}
why this problem occur ?
How to settle it?