Build (method = -2) #dp: 7071 Step-3' Graph: 120 vertices and 1651 arcs (0.04s) Step-4' Graph: 85 vertices and 1581 arcs (0.04s) #V4/#V3 = 0.71 #A4/#A3 = 0.96 Ready! (0.04s) Optimize a model with 166 rows, 1582 columns and 4582 nonzeros Presolve removed 28 rows and 47 columns Presolve time: 0.02s Presolved: 138 rows, 1535 columns, 4463 nonzeros Variable types: 0 continuous, 1535 integer (0 binary) Found heuristic solution: objective 864.0000000 Found heuristic solution: objective 718.0000000 Optimize a model with 138 rows, 1535 columns and 4463 nonzeros Presolved: 138 rows, 1535 columns, 4463 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.908e+03 Factor NZ : 5.306e+03 Factor Ops : 2.752e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.92134551e+04 -7.51958030e+04 1.79e+05 2.22e-16 1.94e+02 0s 1 5.42823923e+03 -1.83397573e+04 3.06e+04 2.66e-15 3.39e+01 0s 2 1.57328002e+03 -6.97457475e+03 4.65e+03 1.98e-14 6.13e+00 0s 3 8.29110498e+02 -1.97495881e+03 1.79e+02 1.73e-14 9.83e-01 0s 4 6.60651573e+02 -1.00369079e+03 4.61e+01 9.10e-15 5.49e-01 0s 5 5.29198749e+02 -2.82564136e+02 1.85e+01 4.44e-15 2.64e-01 0s 6 4.78080152e+02 7.27574777e+01 1.05e+01 2.78e-15 1.31e-01 0s 7 4.54641339e+02 1.73028059e+02 6.87e+00 2.27e-15 9.08e-02 0s 8 4.21590634e+02 3.46527715e+02 1.05e+00 3.22e-15 2.41e-02 0s 9 4.12000973e+02 3.79273280e+02 4.37e-01 2.64e-15 1.05e-02 0s 10 4.04664473e+02 3.93853129e+02 9.70e-02 2.14e-15 3.46e-03 0s 11 4.02681742e+02 3.99737020e+02 2.67e-02 2.52e-15 9.43e-04 0s 12 4.01991115e+02 4.01402799e+02 4.97e-03 2.58e-15 1.88e-04 0s 13 4.01808530e+02 4.01799115e+02 1.47e-05 2.76e-15 3.01e-06 0s 14 4.01806667e+02 4.01806667e+02 2.90e-11 2.74e-15 5.78e-12 0s Barrier solved model in 14 iterations and 0.02 seconds Optimal objective 4.01806667e+02 Root relaxation: objective 4.018067e+02, 651 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 401.80667 0 56 718.00000 401.80667 44.0% - 0s H 0 0 405.0000000 401.80667 0.79% - 0s H 0 0 403.0000000 401.80667 0.30% - 0s 0 0 401.80667 0 60 403.00000 401.80667 0.30% - 0s H 0 0 402.0000000 401.80667 0.05% - 0s Cutting planes: Gomory: 1 Explored 0 nodes (1263 simplex iterations) in 0.24 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 4.020000000000e+02, best bound 4.020000000000e+02, gap 0.0% Preprocessing time: 0.06 seconds Gurobi run time: 0.24 seconds Total run time: 0.30 seconds Objective: 402 Solution: 9 x [31, 81] 11 x [32, 80] 8 x [33, 79] 9 x [34, 78] 10 x [35, 77] 2 x [33, 77] 3 x [3, 13, 77] 1 x [1, 13, 77] 2 x [7, 9, 77] 12 x [36, 76] 5 x [37, 75] 3 x [3, 15, 75] 7 x [38, 74] 2 x [5, 14, 74] 3 x [39, 73] 1 x [2, 18, 73] 1 x [4, 16, 73] 7 x [10, 10, 73] 1 x [40, 72] 9 x [5, 16, 72] 7 x [6, 15, 72] 3 x [8, 13, 72] 4 x [41, 71] 11 x [1, 21, 71] 3 x [42, 70] 5 x [1, 22, 70] 3 x [2, 21, 70] 6 x [6, 17, 70] 9 x [43, 69] 1 x [4, 20, 69] 2 x [7, 17, 69] 4 x [12, 12, 69] 7 x [44, 68] 5 x [2, 23, 68] 1 x [4, 21, 68] 2 x [45, 67] 10 x [8, 18, 67] 1 x [13, 13, 67] 12 x [46, 66] 3 x [4, 24, 65] 9 x [9, 19, 65] 9 x [48, 64] 5 x [4, 25, 64] 9 x [49, 63] 10 x [50, 62] 9 x [7, 24, 62] 12 x [51, 61] 1 x [9, 23, 61] 11 x [52, 60] 1 x [9, 24, 60] 1 x [2, 22, 60] 16 x [53, 59] 2 x [5, 29, 59] 11 x [54, 58] 1 x [3, 29, 58] 9 x [55, 57] 1 x [8, 28, 57] 1 x [17, 20, 56] 5 x [56, 56] 4 x [9, 29, 55] 1 x [3, 33, 54] 1 x [14, 24, 54] 1 x [18, 22, 53] 1 x [12, 28, 51] 1 x [6, 40, 47] 1 x [3, 39, 47] 8 x [20, 26, 47] 4 x [23, 23, 47] 1 x [23, 24, 46] 8 x [14, 34, 45] 4 x [20, 29, 44] 3 x [23, 26, 44] 9 x [11, 40, 42] 6 x [25, 27, 41] 2 x [15, 39, 39] 1 x [26, 30, 37] 6 x [28, 28, 37] 9 x [30, 30, 33] 1 x [30, 30, 32] 2 x [31, 31, 31]