Program: 4009
Project: 4009
Buggy source:
protected void _storeHeader(String firstLine,Map<String,List<String>> headers) throws Exception {
  _State state=new _State(false,false,false,false,false,firstLine);
  if (headers != null && !headers.isEmpty()) {
    for (    Entry<String,List<String>> entry : headers.entrySet()) {
      String key=entry.getKey();
      for (      String value : entry.getValue())       storeHeader(state,key,value);
    }
  }
  Log.d(TAG,"String_Node_Str");
  if (this.sendDate == true && state.sentDateHeader == false) {
    state.messageHeader+="String_Node_Str" + context.utcDate() + HTTP.CRLF;
  }
  Log.d(TAG,"String_Node_Str");
  int statusCode=this.statusCode;
  if ((statusCode == 204 || statusCode == 304) && this.chunkedEncoding == true) {
    Log.d(TAG,"String_Node_Str" + statusCode + "String_Node_Str"+ "String_Node_Str");
    this.chunkedEncoding=false;
    this.shouldKeepAlive=false;
  }
  if (this._removedHeader.containsKey("String_Node_Str") && this._removedHeader.get("String_Node_Str")) {
    this._last=true;
    this.shouldKeepAlive=false;
  }
 else   if (state.sentConnectionHeader == false) {
    boolean shouldSendKeepAlive=this.shouldKeepAlive && (state.sentContentLengthHeader || this.useChunkedEncodingByDefault || this.agent != null);
    if (shouldSendKeepAlive) {
      state.messageHeader+="String_Node_Str";
    }
 else {
      this._last=true;
      state.messageHeader+="String_Node_Str";
    }
  }
  Log.d(TAG,"String_Node_Str");
  if (state.sentContentLengthHeader == false && state.sentTransferEncodingHeader == false) {
    if (this._hasBody && !(this._removedHeader.containsKey("String_Node_Str") && this._removedHeader.get("String_Node_Str"))) {
      if (this.useChunkedEncodingByDefault) {
        state.messageHeader+="String_Node_Str";
        this.chunkedEncoding=true;
      }
 else {
        this._last=true;
      }
    }
 else {
      this.chunkedEncoding=false;
    }
  }
  this._header=state.messageHeader + HTTP.CRLF;
  this._headerSent=false;
  Log.d(TAG,"String_Node_Str");
  if (state.sentExpect)   this._send("String_Node_Str","String_Node_Str",null);
}

Fixed version (ground truth):
protected void _storeHeader(String firstLine,Map<String,List<String>> headers) throws Exception {
  _State state=new _State(false,false,false,false,false,firstLine);
  if (headers != null && !headers.isEmpty()) {
    for (    Entry<String,List<String>> entry : headers.entrySet()) {
      String key=entry.getKey();
      for (      String value : entry.getValue())       storeHeader(state,key,value);
    }
  }
  Log.d(TAG,"String_Node_Str");
  if (this.sendDate == true && state.sentDateHeader == false) {
    state.messageHeader+="String_Node_Str" + context.utcDate() + http.CRLF;
  }
  Log.d(TAG,"String_Node_Str");
  int statusCode=this.statusCode;
  if ((statusCode == 204 || statusCode == 304) && this.chunkedEncoding == true) {
    Log.d(TAG,"String_Node_Str" + statusCode + "String_Node_Str"+ "String_Node_Str");
    this.chunkedEncoding=false;
    this.shouldKeepAlive=false;
  }
  if (this._removedHeader.containsKey("String_Node_Str") && this._removedHeader.get("String_Node_Str")) {
    this._last=true;
    this.shouldKeepAlive=false;
  }
 else   if (state.sentConnectionHeader == false) {
    boolean shouldSendKeepAlive=this.shouldKeepAlive && (state.sentContentLengthHeader || this.useChunkedEncodingByDefault || this.agent != null);
    if (shouldSendKeepAlive) {
      state.messageHeader+="String_Node_Str";
    }
 else {
      this._last=true;
      state.messageHeader+="String_Node_Str";
    }
  }
  Log.d(TAG,"String_Node_Str");
  if (state.sentContentLengthHeader == false && state.sentTransferEncodingHeader == false) {
    if (this._hasBody && !(this._removedHeader.containsKey("String_Node_Str") && this._removedHeader.get("String_Node_Str"))) {
      if (this.useChunkedEncodingByDefault) {
        state.messageHeader+="String_Node_Str";
        this.chunkedEncoding=true;
      }
 else {
        this._last=true;
      }
    }
 else {
      this.chunkedEncoding=false;
    }
  }
  this._header=state.messageHeader + http.CRLF;
  this._headerSent=false;
  Log.d(TAG,"String_Node_Str");
  if (state.sentExpect)   this._send("String_Node_Str","String_Node_Str",null);
}