anchor.diff:  
                  %% Prepare 3 txs:
                  %% 1st tx has the lowest gas
  -               %% 2nd tx has greater gas than 1st and 3rd tx
  +               %% Depends on aec_geovernance settings whether 2nd or 3rd is largest
                  STx1 = a_signed_tx(me, PK1, 1, 100),
                  STx2 = signed_ct_create_tx(PK2, 1, 100, 1000),
                  STx3 = signed_ct_call_tx(PK3, 1, 100, 1000),
  
positive.code:                aec_tx_pool:restore_mempool(),
  
                 %% Get only 2 txs, the 1st + 2nd or 1st + 3rd.
                 {ok, STxs1} = aec_tx_pool:get_candidate(GasTx1 + GasTx2, aec_chain:top_block_hash()),
                 ?assert(lists:member(STx1, STxs1) and (lists:member(STx2, STxs1) or lists:member(STx3, STxs1))),
  
                 aec_tx_pool:restore_mempool(),
  
negative.code:                GasTx3 = aetx:gas(aetx_sign:tx(STx3)),
  
                 ?assert(GasTx2 > GasTx1),
                 ?assert(GasTx3 > GasTx1),
                 {MinGasTx, MaxGasTx} = 
                     case GasTx2 > GasTx3 of
                         true -> { {STx3, GasTx3}, {STx2, GasTx2} };
                         false ->  { {STx2, GasTx2}, {STx3, GasTx3} }
                       end,
  
                 %% Push all txs to the pool.
                 ?assertEqual(ok, aec_tx_pool:push(STx1)),
  