Program: 69226
Project: 69226
Buggy source:
public Observable<String> importAccountWithMnemonics(String mnemonics,String password,String name){
  return Observable.create((  Subscriber<? super String> e) -> {
    try {
      long timeSeconds=System.currentTimeMillis() / 1000;
      DeterministicSeed seed=new DeterministicSeed(mnemonics,null,"String_Node_Str",timeSeconds);
      DeterministicKeyChain chain=DeterministicKeyChain.builder().seed(seed).build();
      List<ChildNumber> keyPath=HDUtils.parsePath("String_Node_Str");
      DeterministicKey key=chain.getKeyByPath(keyPath,true);
      BigInteger privateKey=key.getPrivKey();
      ECKeyPair ecKeyPair=ECKeyPair.create(privateKey);
      WalletFile walletFile=Wallet.createLight(password,ecKeyPair);
      String address=BrahmaWeb3jService.getInstance().prependHexPrefix(walletFile.getAddress());
      List<AccountEntity> accounts=mObservableAccounts.getValue();
      boolean cancel=false;
      if (accounts != null && accounts.size() > 0) {
        for (        AccountEntity accountEntity : accounts) {
          if (accountEntity.getAddress().equals(address)) {
            cancel=true;
            break;
          }
        }
      }
      if (cancel) {
        e.onNext("String_Node_Str");
      }
 else {
        SimpleDateFormat dateFormat=new SimpleDateFormat("String_Node_Str");
        String filename=dateFormat.format(new Date()) + walletFile.getAddress() + "String_Node_Str";
        File destination=new File(getApplication().getFilesDir(),filename);
        ObjectMapper objectMapper=ObjectMapperFactory.getObjectMapper();
        objectMapper.writeValue(destination,walletFile);
        AccountEntity account=new AccountEntity();
        account.setName(name);
        account.setAddress(BrahmaWeb3jService.getInstance().prependHexPrefix(walletFile.getAddress()));
        account.setFilename(filename);
        ((WalletApp)getApplication()).getRepository().createAccount(account);
        e.onNext(address);
      }
    }
 catch (    CipherException|IOException|UnreadableWalletException e1) {
      e1.printStackTrace();
      e.onNext("String_Node_Str");
    }
    e.onCompleted();
  }
);
}

Fixed version (ground truth):
public Observable<String> importAccountWithMnemonics(String mnemonics,String password,String accountName){
  return Observable.create((  Subscriber<? super String> e) -> {
    try {
      List<String> menmonicsCodes=Splitter.on("String_Node_Str").splitToList(mnemonics);
      MnemonicCode.INSTANCE.check(menmonicsCodes);
      long timeSeconds=System.currentTimeMillis() / 1000;
      DeterministicSeed seed=new DeterministicSeed(mnemonics,null,"String_Node_Str",timeSeconds);
      DeterministicKeyChain chain=DeterministicKeyChain.builder().seed(seed).build();
      List<ChildNumber> keyPath=HDUtils.parsePath("String_Node_Str");
      DeterministicKey key=chain.getKeyByPath(keyPath,true);
      BigInteger privateKey=key.getPrivKey();
      ECKeyPair ecKeyPair=ECKeyPair.create(privateKey);
      WalletFile walletFile=Wallet.createLight(password,ecKeyPair);
      String address=BrahmaWeb3jService.getInstance().prependHexPrefix(walletFile.getAddress());
      List<AccountEntity> accounts=mObservableAccounts.getValue();
      boolean cancel=false;
      if (accounts != null && accounts.size() > 0) {
        for (        AccountEntity accountEntity : accounts) {
          if (accountEntity.getAddress().equals(address)) {
            cancel=true;
            break;
          }
        }
      }
      if (cancel) {
        e.onNext("String_Node_Str");
      }
 else {
        SimpleDateFormat dateFormat=new SimpleDateFormat("String_Node_Str");
        String filename=dateFormat.format(new Date()) + walletFile.getAddress() + "String_Node_Str";
        File destination=new File(getApplication().getFilesDir(),filename);
        ObjectMapper objectMapper=ObjectMapperFactory.getObjectMapper();
        objectMapper.writeValue(destination,walletFile);
        AccountEntity account=new AccountEntity();
        account.setName(accountName);
        account.setAddress(BrahmaWeb3jService.getInstance().prependHexPrefix(walletFile.getAddress()));
        account.setFilename(filename);
        ((WalletApp)getApplication()).getRepository().createAccount(account);
        e.onNext(address);
      }
    }
 catch (    MnemonicException e1) {
      e1.printStackTrace();
      e.onError(e1);
    }
catch (    CipherException|IOException|UnreadableWalletException e1) {
      e1.printStackTrace();
      e.onNext("String_Node_Str");
    }
    e.onCompleted();
  }
);
}