let subst,metasenv',ugraph,_,selected_terms_with_context =
ProofEngineHelpers.select
~metasenv:metasenv' ~ugraph ~conjecture:lifted_conjecture
let subst,metasenv',ugraph,_,selected_terms_with_context =
ProofEngineHelpers.select
~metasenv:metasenv' ~ugraph ~conjecture:lifted_conjecture