Use com.sap.mobile.lib.supportability.ILogger#w(String, Throwable) What a Terrible Failure: Reports an exception that should never happen.
public void wtf ( final String tag, final Throwable tr )
Similar to wtf(String, final String), with an exception to log. Logger implementation is able to identify the source of the log message at the price of performance penalty. See SDMLogger#wtf(String,Throwable,String)