Build (method = -2) #dp: 143850 Step-3' Graph: 916 vertices and 21184 arcs (1.06s) Step-4' Graph: 914 vertices and 21180 arcs (1.08s) #V4/#V3 = 1.00 #A4/#A3 = 1.00 Ready! (1.08s) Optimize a model with 950 rows, 21181 columns and 61763 nonzeros Presolve removed 10 rows and 15 columns Presolve time: 0.19s Presolved: 940 rows, 21166 columns, 61753 nonzeros Variable types: 0 continuous, 21166 integer (0 binary) Found heuristic solution: objective 3308.0000000 Optimize a model with 940 rows, 21166 columns and 61753 nonzeros Presolved: 940 rows, 21166 columns, 61753 nonzeros Root barrier log... Ordering time: 0.02s Barrier statistics: AA' NZ : 4.106e+04 Factor NZ : 1.843e+05 (roughly 10 MBytes of memory) Factor Ops : 4.641e+07 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.46859271e+05 -6.85901762e+06 4.32e+06 2.22e-16 3.27e+03 0s 1 4.06675784e+04 -4.61597642e+06 8.82e+05 4.22e-15 7.22e+02 0s 2 1.62360071e+04 -3.24826333e+06 2.47e+05 3.89e-15 2.41e+02 0s 3 8.38458466e+03 -1.25497631e+06 8.53e+04 7.11e-15 7.74e+01 0s 4 5.54651254e+03 -4.39088737e+05 3.00e+04 8.70e-14 2.49e+01 0s 5 4.27820446e+03 -2.32181859e+05 5.46e+03 8.35e-14 7.90e+00 0s 6 4.01464313e+03 -1.15782259e+05 3.77e+02 5.15e-14 2.96e+00 0s 7 3.99403488e+03 -2.27213562e+04 3.82e-11 1.24e-14 6.31e-01 0s 8 3.96933054e+03 -8.16907239e+03 1.73e-09 5.55e-15 2.87e-01 0s 9 3.92977118e+03 -8.01360793e+03 1.63e-09 6.99e-15 2.82e-01 0s 10 3.75060269e+03 -6.76500733e+03 1.51e-09 6.22e-15 2.48e-01 0s 11 3.09877696e+03 -5.91675689e+03 1.30e-09 6.33e-15 2.13e-01 0s 12 3.05561772e+03 -4.28606671e+03 1.26e-09 4.66e-15 1.73e-01 1s 13 2.75060776e+03 -3.97317832e+03 1.12e-09 4.77e-15 1.59e-01 1s 14 2.37546192e+03 -3.09915508e+03 9.56e-10 4.68e-15 1.29e-01 1s 15 2.23196059e+03 -2.16966233e+03 8.84e-10 4.21e-15 1.04e-01 1s 16 1.66437596e+03 -1.74238409e+03 6.23e-10 4.47e-15 8.04e-02 1s 17 1.46137648e+03 -1.00003494e+03 5.30e-10 3.68e-15 5.81e-02 1s 18 9.94413440e+02 -7.69531384e+02 3.19e-10 4.16e-15 4.16e-02 1s 19 6.65568003e+02 -4.55488034e+02 1.62e-10 3.96e-15 2.65e-02 1s 20 5.67890724e+02 -2.75219774e+02 1.17e-10 4.09e-15 1.99e-02 1s 21 5.26127125e+02 -2.32343611e+01 9.34e-11 3.29e-15 1.30e-02 1s 22 4.69417806e+02 1.05588064e+02 6.33e-11 3.17e-15 8.59e-03 1s 23 4.26788429e+02 1.80013572e+02 4.48e-11 3.45e-15 5.82e-03 1s 24 4.10446195e+02 2.62297792e+02 3.08e-11 3.06e-15 3.50e-03 1s 25 4.02109212e+02 3.08736334e+02 2.86e-11 2.95e-15 2.20e-03 1s 26 3.96347995e+02 3.35058733e+02 1.93e-11 3.31e-15 1.45e-03 1s 27 3.94992031e+02 3.52248846e+02 1.69e-11 3.68e-15 1.01e-03 1s 28 3.94386799e+02 3.53646159e+02 1.60e-11 4.34e-15 9.62e-04 1s 29 3.90529550e+02 3.64173090e+02 1.09e-11 3.52e-15 6.22e-04 1s 30 3.87875127e+02 3.74576504e+02 9.05e-12 2.86e-15 3.14e-04 1s 31 3.86479518e+02 3.78542946e+02 5.29e-12 2.96e-15 1.87e-04 1s 32 3.85711638e+02 3.80952557e+02 3.93e-11 2.78e-15 1.12e-04 1s 33 3.85399637e+02 3.82002538e+02 2.83e-11 3.13e-15 8.02e-05 1s 34 3.85174283e+02 3.82652936e+02 2.08e-11 3.28e-15 5.95e-05 1s 35 3.85023088e+02 3.83138368e+02 1.54e-11 3.81e-15 4.45e-05 1s 36 3.84950997e+02 3.83507161e+02 1.22e-11 3.70e-15 3.41e-05 1s 37 3.84672501e+02 3.83648051e+02 5.97e-12 4.12e-15 2.42e-05 1s 38 3.84640769e+02 3.84034350e+02 3.76e-12 3.25e-15 1.43e-05 1s 39 3.84637220e+02 3.84184418e+02 3.60e-12 3.75e-15 1.07e-05 1s 40 3.84599498e+02 3.84585294e+02 1.30e-12 1.80e-15 3.35e-07 1s 41 3.84598002e+02 3.84597985e+02 9.43e-12 2.43e-15 3.92e-10 1s 42 3.84598000e+02 3.84598000e+02 1.90e-12 2.15e-15 4.71e-16 2s Barrier solved model in 42 iterations and 1.52 seconds Optimal objective 3.84598000e+02 Root relaxation: objective 3.845980e+02, 17509 iterations, 2.06 seconds Total elapsed time = 6.19s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 384.59800 0 105 3308.00000 384.59800 88.4% - 9s H 0 0 385.0000000 384.59800 0.10% - 9s Explored 0 nodes (35568 simplex iterations) in 9.56 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 3.850000000000e+02, best bound 3.850000000000e+02, gap 0.0% Preprocessing time: 1.15 seconds Gurobi run time: 9.56 seconds Total run time: 10.71 seconds Objective: 385 Solution: 4 x [8, 14, 17, 17, 19, 24, 27, 31] 15 x [1, 3, 8, 11, 15, 17, 17, 19, 24] 25 x [2, 3, 3, 4, 5, 24, 34] 2 x [3, 5, 10, 19, 19, 24, 27, 27, 29, 34] 3 x [3, 6, 7, 7, 8, 10, 19, 19, 24, 27, 27, 27, 29, 34] 1 x [3, 6, 8, 10, 19, 19, 24, 27, 27, 27, 29, 34] 22 x [8, 16, 19, 23, 28, 28, 29, 30, 33, 33, 35] 1 x [16, 23, 28, 28, 29, 29, 30, 33, 33, 35] 24 x [2, 4, 11, 14, 16, 18, 22, 30] 45 x [2, 6, 7, 8, 8, 14, 16, 18, 21, 22, 32] 22 x [2, 6, 13, 14, 15, 16, 18, 21, 22, 29] 17 x [3, 5, 18, 22, 32, 34, 35] 1 x [17, 17, 17, 17, 22] 5 x [3, 3, 6, 11, 11, 11, 11, 11, 20, 26, 27, 28, 30] 13 x [8, 11, 17, 17, 17, 18, 19, 21, 30] 10 x [8, 16, 17, 17, 17, 18, 19, 21, 26] 1 x [14, 14, 18, 18, 21, 21, 26, 28] 3 x [8, 11, 11, 11, 11, 11, 17, 17, 19, 27, 27, 30, 33] 19 x [8, 10, 10, 17, 17, 19, 21, 27, 27, 29, 29, 33] 2 x [11, 11, 11, 13, 17, 17, 17, 19, 19, 25, 27] 58 x [4, 5, 8, 12, 26, 28, 30, 35, 36] 13 x [4, 5, 8, 10, 12, 21, 26, 27, 28, 30, 35] 4 x [2, 7, 7, 11, 11, 11, 11, 12, 21, 21, 26, 30, 30, 35] 1 x [2, 10, 11, 12, 21, 21, 21, 26, 30, 30, 35] 10 x [3, 5, 11, 11, 11, 19, 21, 25, 30, 30, 33, 34] 9 x [3, 5, 7, 7, 7, 10, 10, 11, 11, 11, 15, 19, 27, 29, 29, 34] 14 x [3, 5, 11, 11, 11, 19, 25, 33, 34, 34, 34] 13 x [3, 3, 5, 10, 10, 15, 19, 21, 27, 27, 29, 34] 9 x [11, 11, 11, 13, 15, 16, 16, 21, 21, 29, 33, 33, 35, 35] 18 x [6, 8, 9, 10, 11, 11, 11, 11, 15, 16, 29, 29, 33, 33, 35, 35] 1 x [11, 11, 11, 13, 13, 15, 29, 29, 33, 33, 35, 35]