Build (method = -2) #dp: 17758 Step-3' Graph: 658 vertices and 7116 arcs (0.13s) Step-4' Graph: 630 vertices and 7060 arcs (0.14s) #V4/#V3 = 0.96 #A4/#A3 = 0.99 Ready! (0.14s) Optimize a model with 669 rows, 7061 columns and 19943 nonzeros Presolve removed 21 rows and 38 columns Presolve time: 0.08s Presolved: 648 rows, 7023 columns, 19869 nonzeros Variable types: 0 continuous, 7023 integer (0 binary) Found heuristic solution: objective 303.0000000 Optimize a model with 648 rows, 7023 columns and 19869 nonzeros Presolved: 648 rows, 7023 columns, 19869 nonzeros Root barrier log... Ordering time: 0.01s Barrier statistics: AA' NZ : 1.289e+04 Factor NZ : 8.312e+04 (roughly 4 MBytes of memory) Factor Ops : 1.832e+07 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 7.23470801e+03 -2.57405911e+05 1.56e+05 2.22e-16 2.19e+02 0s 1 2.11172110e+03 -1.40043486e+05 2.97e+04 1.55e-15 4.60e+01 0s 2 9.17101841e+02 -7.24944576e+04 7.52e+03 2.66e-15 1.32e+01 0s 3 5.31799237e+02 -2.33429761e+04 1.31e+03 2.44e-14 2.81e+00 0s 4 4.54806779e+02 -6.15262211e+03 1.08e+02 9.77e-15 5.40e-01 0s 5 3.85039722e+02 -2.37978228e+03 3.74e+01 5.11e-15 2.11e-01 0s 6 3.91497933e+02 -1.74902469e+03 3.66e+01 4.11e-15 1.63e-01 0s 7 3.93255300e+02 -1.08731886e+03 1.97e+01 3.11e-15 1.10e-01 0s 8 3.77823531e+02 -9.27451227e+02 9.44e+00 3.11e-15 9.46e-02 0s 9 3.61743151e+02 -8.73855287e+02 6.10e+00 2.89e-15 8.90e-02 0s 10 3.45636134e+02 -6.02319167e+02 4.72e+00 2.22e-15 6.81e-02 0s 11 3.30581953e+02 -5.72193065e+02 4.21e+00 2.00e-15 6.48e-02 0s 12 2.91776396e+02 -2.78182479e+02 3.46e+00 9.83e-16 4.10e-02 0s 13 2.00971332e+02 -8.43635705e+01 1.30e+00 7.85e-16 2.04e-02 0s 14 1.74783775e+02 -9.41458574e+00 8.57e-01 6.80e-16 1.32e-02 0s 15 1.55067614e+02 1.83224370e+01 5.78e-01 9.99e-16 9.78e-03 0s 16 1.40224143e+02 7.00091218e+01 3.32e-01 7.24e-16 5.02e-03 0s 17 1.26811390e+02 9.57772922e+01 1.33e-01 6.05e-16 2.21e-03 0s 18 1.22881154e+02 1.01054134e+02 8.38e-02 8.48e-16 1.56e-03 0s 19 1.22151426e+02 1.03364972e+02 7.08e-02 8.30e-16 1.34e-03 0s 20 1.21598651e+02 1.05810154e+02 5.22e-02 9.69e-16 1.12e-03 0s 21 1.20565716e+02 1.09730975e+02 3.04e-02 8.80e-16 7.71e-04 0s 22 1.19346452e+02 1.12169586e+02 8.84e-03 8.63e-16 5.10e-04 0s 23 1.19177480e+02 1.14686103e+02 7.49e-03 8.17e-16 3.19e-04 0s 24 1.19006593e+02 1.15356227e+02 5.73e-03 8.22e-16 2.60e-04 0s 25 1.18916431e+02 1.15769092e+02 4.75e-03 9.80e-16 2.24e-04 0s 26 1.18692733e+02 1.16627200e+02 2.34e-03 9.21e-16 1.47e-04 0s 27 1.18598058e+02 1.17029847e+02 1.51e-03 8.82e-16 1.11e-04 1s 28 1.18572347e+02 1.17200125e+02 1.39e-03 1.01e-15 9.75e-05 1s 29 1.18526720e+02 1.17511273e+02 1.08e-03 9.76e-16 7.22e-05 1s 30 1.18475020e+02 1.17569083e+02 7.95e-04 1.08e-15 6.44e-05 1s 31 1.18389690e+02 1.17690013e+02 3.41e-04 1.19e-15 4.97e-05 1s 32 1.18349060e+02 1.17932008e+02 2.13e-04 8.74e-16 2.96e-05 1s 33 1.18336961e+02 1.17994085e+02 1.82e-04 9.39e-16 2.44e-05 1s 34 1.18308679e+02 1.18055507e+02 1.24e-04 9.16e-16 1.80e-05 1s 35 1.18287233e+02 1.18120656e+02 8.13e-05 8.90e-16 1.18e-05 1s 36 1.18270396e+02 1.18147790e+02 5.39e-05 8.47e-16 8.71e-06 1s 37 1.18257901e+02 1.18177483e+02 3.37e-05 7.77e-16 5.71e-06 1s 38 1.18248696e+02 1.18207548e+02 2.04e-05 6.66e-16 2.92e-06 1s 39 1.18243950e+02 1.18223574e+02 1.16e-05 5.92e-16 1.45e-06 1s 40 1.18241453e+02 1.18227400e+02 6.89e-06 7.06e-16 9.98e-07 1s 41 1.18237794e+02 1.18230716e+02 2.80e-06 6.80e-16 5.03e-07 1s 42 1.18235541e+02 1.18234454e+02 1.24e-07 5.35e-16 7.72e-08 1s 43 1.18235324e+02 1.18235321e+02 8.36e-11 8.55e-16 2.46e-10 1s 44 1.18235324e+02 1.18235324e+02 8.02e-12 6.81e-16 2.46e-13 1s Barrier solved model in 44 iterations and 0.79 seconds Optimal objective 1.18235324e+02 Root relaxation: objective 1.182353e+02, 667 iterations, 0.81 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 118.23532 0 68 303.00000 118.23532 61.0% - 1s H 0 0 119.0000000 118.23532 0.64% - 1s Explored 0 nodes (929 simplex iterations) in 1.31 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.190000000000e+02, best bound 1.190000000000e+02, gap 0.0% Preprocessing time: 0.18 seconds Gurobi run time: 1.31 seconds Total run time: 1.50 seconds Objective: 119 Solution: 1 x [2, 5, 26] 11 x [2, 6, 25] 4 x [7, 24] 1 x [22, 23, 24] 7 x [5, 5, 20, 39] 1 x [16, 17, 20] 8 x [16, 17, 17, 20] 2 x [4, 6, 20] 2 x [5, 13, 34] 9 x [8, 22, 36] 1 x [3, 6, 22] 6 x [3, 12, 16] 2 x [11, 27, 33] 2 x [7, 11, 12] 1 x [6, 6, 6, 11] 2 x [35, 37, 38] 6 x [15, 23, 31] 2 x [9, 28, 31] 2 x [12, 27, 31] 3 x [13, 26, 31] 1 x [16, 25, 31, 38] 1 x [27, 30] 2 x [14, 28, 30, 35] 1 x [14, 26, 30, 36] 1 x [26, 30, 36] 2 x [6, 13, 21, 28] 2 x [21, 22, 33, 35] 6 x [19, 21, 32, 36] 2 x [4, 10, 15] 1 x [6, 10, 13, 36] 1 x [10, 26] 1 x [10, 16, 18, 26] 8 x [9, 27, 35] 1 x [9, 16, 22, 22] 8 x [1, 14, 18, 38] 5 x [16, 26, 29, 39] 2 x [13, 27, 33, 38] 1 x [35, 38, 38, 39]