prevent ATP thread for staying around for 1 minute if an exception occurred earlier;
this is a workaround for what could be a misfeature of "Async_Manager", which I'd rather not touch
header {* Main HOL *}
theory Main
imports Plain Predicate_Compile Nitpick SMT
begin
text {*
Classical Higher-order Logic -- only ``Main'', excluding real and
complex numbers etc.
*}
text {* See further \cite{Nipkow-et-al:2002:tutorial} *}
end