[2022-01-21 09:04:55] (24s) Tuple counts for dom#FlowSummaryImpl::Private::TConsSummaryComponentStack#ff/2@i28#07224gwr after 14.1s:
                      0         ~0%         {2} r1 = SCAN FlowSummaryImpl::Private::derivedFluentFlowPush#ffffff#reorder_3_4_5_0_1_2#prev_delta OUTPUT In.1 'tail', In.0 'head'
                      
                      110216000 ~6471%      {2} r2 = JOIN FlowSummaryImpl::Private::External::interpretSpec#ffff#reorder_3_2_0_1#prev_delta WITH FlowSummaryImpl::Private::External::interpretSpec#ffff#reorder_3_2_0_1#prev ON FIRST 1 OUTPUT Lhs.0 'tail', Rhs.1 'head'
                      
                      110215000 ~6471%      {2} r3 = JOIN FlowSummaryImpl::Private::External::interpretSpec#ffff#reorder_3_2_0_1#prev WITH FlowSummaryImpl::Private::External::interpretSpec#ffff#reorder_3_2_0_1#prev_delta ON FIRST 1 OUTPUT Lhs.0, Rhs.1
                      
                      220431000 ~13042%     {2} r4 = r2 UNION r3
                      220431000 ~13042%     {2} r5 = r1 UNION r4
                      6027000   ~259%       {2} r6 = r5 AND NOT dom#FlowSummaryImpl::Private::TConsSummaryComponentStack#ff#prev(Lhs.1 'head', Lhs.0 'tail')
                      6027000   ~269%       {2} r7 = SCAN r6 OUTPUT In.1 'head', In.0 'tail'
                                            return r7