Program: 10806
Project: 10806
Buggy source:
public Collection<Object[]> getTestScenario(){
  Collection<Object[]> tests=new ArrayList<>();
  for (  Map<String,BrowserInstance> browser : executions) {
    TestScenario test=new TestScenario();
    for (    String key : browser.keySet()) {
      BrowserClient browserClient=null;
      BrowserInstance instance=browser.get(key);
      BrowserClient.Builder builder=new BrowserClient.Builder().browserType(instance.getBrowserType());
      if (instance.getInstances() > 0) {
        builder=builder.numInstances(instance.getInstances());
      }
      if (instance.getBrowserPerInstance() > 0) {
        builder=builder.browserPerInstance(instance.getBrowserPerInstance());
      }
      if (instance.getHostAddress() != null) {
        builder=builder.hostAddress(instance.getHostAddress());
      }
      if (instance.getLogin() != null) {
        builder=builder.login(instance.getLogin());
      }
      if (instance.getPasswd() != null) {
        builder=builder.passwd(instance.getPasswd());
      }
      if (instance.getKey() != null) {
        builder=builder.pem(instance.getKey());
      }
      if (instance.getPort() > 0) {
        builder=builder.serverPort(instance.getPort());
      }
      if (instance.isEnableScreenCapture()) {
        builder=builder.enableScreenCapture();
      }
      if (instance.getProtocol() != null) {
        builder=builder.protocol(Protocol.valueOf(instance.getProtocol().toUpperCase()));
      }
      if (instance.getClient() != null) {
        builder=builder.client(Client.value2Client(instance.getClient()));
      }
      if (instance.getPublicIP() != null) {
        System.setProperty(BrowserClient.TEST_PUBLIC_IP_PROPERTY,instance.getPublicIP());
      }
      if (instance.getSaucelabsUser() != null) {
        System.setProperty(BrowserClient.SAUCELAB_USER_PROPERTY,instance.getSaucelabsUser());
      }
      if (instance.getSaucelabsKey() != null) {
        System.setProperty(BrowserClient.SAUCELAB_KEY_PROPERTY,instance.getSaucelabsKey());
      }
      if (instance.isLocal()) {
        browserClient=builder.scope(BrowserScope.LOCAL).build();
      }
 else       if (instance.isRemote()) {
        browserClient=builder.scope(BrowserScope.REMOTE).build();
      }
 else       if (instance.isSauceLabs()) {
        browserClient=builder.scope(BrowserScope.SAUCELABS).browserVersion(instance.getVersion()).platform(instance.getPlatformType()).build();
      }
 else {
        throw new RuntimeException("String_Node_Str" + instance.getScope());
      }
      test.addBrowser(key,browserClient);
    }
    tests.add(new Object[]{test});
  }
  return tests;
}

Fixed version (ground truth):
public Collection<Object[]> getTestScenario(){
  Collection<Object[]> tests=new ArrayList<>();
  for (  Map<String,BrowserInstance> browser : executions) {
    TestScenario test=new TestScenario();
    for (    String key : browser.keySet()) {
      BrowserClient browserClient=null;
      BrowserInstance instance=browser.get(key);
      BrowserClient.Builder builder=new BrowserClient.Builder().browserType(instance.getBrowserType());
      if (instance.getInstances() > 0) {
        builder=builder.numInstances(instance.getInstances());
      }
      if (instance.getBrowserPerInstance() > 0) {
        builder=builder.browserPerInstance(instance.getBrowserPerInstance());
      }
      if (instance.getHostAddress() != null) {
        builder=builder.hostAddress(instance.getHostAddress());
      }
      if (instance.getLogin() != null) {
        builder=builder.login(instance.getLogin());
      }
      if (instance.getPasswd() != null) {
        builder=builder.passwd(instance.getPasswd());
      }
      if (instance.getKey() != null) {
        builder=builder.pem(instance.getKey());
      }
      if (instance.getPort() > 0) {
        builder=builder.serverPort(instance.getPort());
      }
      if (instance.isEnableScreenCapture()) {
        builder=builder.enableScreenCapture();
      }
      if (instance.getProtocol() != null) {
        builder=builder.protocol(Protocol.valueOf(instance.getProtocol().toUpperCase()));
      }
      if (instance.getClient() != null) {
        builder=builder.client(Client.value2Client(instance.getClient()));
      }
      if (instance.getPublicIP() != null) {
        builder=builder.publicIp(instance.getPublicIP());
      }
      if (instance.getSaucelabsUser() != null) {
        System.setProperty(BrowserClient.SAUCELAB_USER_PROPERTY,instance.getSaucelabsUser());
      }
      if (instance.getSaucelabsKey() != null) {
        System.setProperty(BrowserClient.SAUCELAB_KEY_PROPERTY,instance.getSaucelabsKey());
      }
      if (instance.isLocal()) {
        browserClient=builder.scope(BrowserScope.LOCAL).build();
      }
 else       if (instance.isRemote()) {
        browserClient=builder.scope(BrowserScope.REMOTE).build();
      }
 else       if (instance.isSauceLabs()) {
        if (instance.getVersion() == null || instance.getPlatformType() == null) {
          throw new RuntimeException("String_Node_Str");
        }
        browserClient=builder.scope(BrowserScope.SAUCELABS).browserVersion(instance.getVersion()).platform(instance.getPlatformType()).build();
      }
 else {
        throw new RuntimeException("String_Node_Str" + instance.getScope());
      }
      test.addBrowser(key,browserClient);
    }
    tests.add(new Object[]{test});
  }
  return tests;
}