Definition cn_send_trans :=
  SendTrans cn_safe_coh cn_safe_in cn_safe_def cn_step_coh.Program Definition cn_send_prep_trans : send_trans TPCCoh :=
  @cn_send_trans prep_req send_prep_prec _.Program Definition cn_send_commit_trans : send_trans TPCCoh :=
  @cn_send_trans commit_req send_commit_prec _.Program Definition cn_send_abort_trans : send_trans TPCCoh :=
  @cn_send_trans abort_req send_abort_prec _.

Lemma rc_step_coh : r_step_coh_t rc_wf rc_tag rc_step.