Infinispan Singleton silently dies in wildfly 9 cluster setup

<stack name="tcp">
                    <transport socket-binding="jgroups-tcp" type="TCP"/>
                    <protocol type="TCPPING">
                        <property name="initial_hosts">
                        10.0.1.32[7600],10.0.1.38[7600],10.0.1.39[7600]</property>
                        <property name="port_range">
                            0
                        </property>
                    </protocol>
                    <protocol type="MERGE2"/>
                    <protocol socket-binding="jgroups-tcp-fd" type="FD_SOCK"/>
                    <protocol type="FD"/>
                    <protocol type="VERIFY_SUSPECT"/>
                    <protocol type="pbcast.NAKACK2"/>
                    <protocol type="UNICAST3"/>
                    <protocol type="pbcast.STABLE"/>
                    <protocol type="pbcast.GMS">
                     <property name="join_timeout">
                            5000
                        </property>
                    </protocol>
                    <protocol type="MFC"/>
                    <protocol type="FRAG2"/>
                    <protocol type="RSVP"/>
                </stack>

<subsystem xmlns="urn:jboss:domain:infinispan:3.0">
            <cache-container aliases="singleton cluster" default-cache="default" module="org.wildfly.clustering.server" name="server">
                <transport lock-timeout="120000"/>
                <replicated-cache mode="ASYNC" name="default">
                    <state-transfer enabled="true" timeout="300000"/>
                    <transaction locking="OPTIMISTIC" mode="BATCH"/>
                </replicated-cache>
            </cache-container>
            <cache-container default-cache="session" module="org.wildfly.clustering.web.infinispan" name="web">
                <transport lock-timeout="120000"/>
                <replicated-cache mode="ASYNC" name="session">
                    <state-transfer enabled="true" timeout="300000"/>
                    <locking isolation="READ_COMMITTED"/>
                    <transaction locking="OPTIMISTIC" mode="BATCH"/>
                </replicated-cache>
            </cache-container>
</subsystem>

public class SingletonServiceActivator implements ServiceActivator {
    public static final ServiceName SINGLETON_SERVICE_NAME =
            ServiceName.JBOSS.append("ha", "singleton");
    private static final String CONTAINER_NAME = "server";
    private static final String CACHE_NAME = "default";

     @Override
    public void activate(ServiceActivatorContext context) throws ServiceRegistryException {
         int quorum = 2;
        InjectedValue<ServerEnvironment> env = new InjectedValue<>();
        SingletonServiceClient srv = new SingletonServiceClient(env);
        ServiceController<?> factoryService = context.getServiceRegistry().getRequiredService(SingletonServiceBuilderFactory.SERVICE_NAME.append(CONTAINER_NAME, CACHE_NAME));
        SingletonServiceBuilderFactory factory = (SingletonServiceBuilderFactory) factoryService.getValue();
        SingletonElectionPolicy policy = new SimpleSingletonElectionPolicy(0);
        factory.createSingletonServiceBuilder(SINGLETON_SERVICE_NAME, srv)
        .requireQuorum(quorum)
        .electionPolicy(policy)
        .build(new DelegatingServiceContainer(context.getServiceTarget(),context.getServiceRegistry()))
        .addDependency(ServerEnvironmentService.SERVICE_NAME, ServerEnvironment.class, env)
        .setInitialMode(ServiceController.Mode.ACTIVE)
        .install();
}

public final class SingletonServiceClient extends AbstractService<Serializable> {
private final Value<ServerEnvironment> env;

    public SingletonServiceClient(Value<ServerEnvironment> env) {
        this.env = env;
    }

@Override
    public void start(StartContext startContext) {
        //        startContext.
        log("SingletonService started");
        //do work
    }

    @Override
    public void stop(StopContext stopContext) {
        log("SingletonService stopped");            // THIS NEVER GETS CALLED
       //stop
    }
}