Build (method = -2) #dp: 3421 Step-3' Graph: 90 vertices and 624 arcs (0.01s) Step-4' Graph: 89 vertices and 622 arcs (0.01s) #V4/#V3 = 0.99 #A4/#A3 = 1.00 Ready! (0.01s) Optimize a model with 169 rows, 623 columns and 1727 nonzeros Presolve removed 102 rows and 317 columns Presolve time: 0.01s Presolved: 67 rows, 306 columns, 693 nonzeros Variable types: 0 continuous, 306 integer (7 binary) Found heuristic solution: objective 2702.0000000 Found heuristic solution: objective 2588.0000000 Optimize a model with 67 rows, 306 columns and 693 nonzeros Presolve removed 0 rows and 6 columns Presolved: 67 rows, 300 columns, 681 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 3.010e+02 Factor NZ : 1.186e+03 Factor Ops : 2.417e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 6.39332327e+03 -1.84931475e+04 7.99e+03 1.06e-01 1.76e+02 0s 1 3.56369421e+03 -7.35344441e+03 1.08e+03 7.77e-16 3.20e+01 0s 2 2.82566375e+03 3.13852176e+02 5.24e+01 6.66e-16 4.46e+00 0s 3 2.41491161e+03 1.74702403e+03 1.07e-01 3.33e-16 1.10e+00 0s 4 2.23687104e+03 2.09975535e+03 7.82e-03 3.01e-16 2.25e-01 0s 5 2.21054754e+03 2.17932739e+03 2.47e-03 3.26e-16 5.12e-02 0s 6 2.20436720e+03 2.18802750e+03 1.02e-03 2.06e-16 2.68e-02 0s 7 2.20292716e+03 2.18850482e+03 7.58e-04 2.15e-16 2.36e-02 0s 8 2.19820901e+03 2.19676066e+03 6.59e-06 3.33e-16 2.37e-03 0s 9 2.19801006e+03 2.19799712e+03 1.72e-07 2.22e-16 2.12e-05 0s 10 2.19800001e+03 2.19800000e+03 1.71e-13 2.47e-16 2.12e-08 0s 11 2.19800000e+03 2.19800000e+03 7.96e-13 2.04e-16 2.28e-14 0s Barrier solved model in 11 iterations and 0.00 seconds Optimal objective 2.19800000e+03 Root relaxation: objective 2.198000e+03, 89 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 2198.0000000 2198.00000 0.0% - 0s Explored 0 nodes (89 simplex iterations) in 0.02 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.198000000000e+03, best bound 2.198000000000e+03, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.02 seconds Total run time: 0.03 seconds Objective: 2198 Solution: 39 x [22] 13 x [5] 33 x [75] 23 x [50] 53 x [46] 32 x [80] 37 x [67] 33 x [61] 44 x [23] 33 x [31] 9 x [36] 36 x [52] 16 x [28] 14 x [10] 3 x [38] 42 x [19] 2 x [18] 32 x [17] 32 x [72] 20 x [35] 2 x [77] 12 x [48] 5 x [7] 20 x [60] 12 x [8] 37 x [26] 62 x [21] 16 x [21, 69] 27 x [14, 69] 3 x [58] 40 x [58, 70] 1 x [58, 69] 20 x [57] 81 x [32] 8 x [65] 19 x [34] 50 x [68] 29 x [3, 64] 51 x [47] 49 x [79] 35 x [3, 51] 35 x [3, 41] 2 x [12] 1 x [3, 12] 16 x [4, 12] 19 x [53] 38 x [16] 25 x [9] 13 x [73] 29 x [49, 73] 28 x [78] 48 x [62] 55 x [29] 48 x [42] 38 x [33] 8 x [27] 49 x [40] 8 x [76] 19 x [20, 76] 7 x [66] 6 x [66, 74] 3 x [54] 12 x [30] 85 x [30, 59] 73 x [55] 7 x [55, 59] 22 x [11, 74] 22 x [2, 56] 29 x [2, 43] 12 x [2, 24] 57 x [37, 45] 23 x [37, 71] 8 x [13, 63] 48 x [39, 63] 74 x [6, 13, 25] 4 x [25, 45] 13 x [25, 39] 16 x [13, 71] 1 x [13, 15] 14 x [1, 44] 4 x [44, 45] 1 x [39, 45] 31 x [44, 71] 16 x [39, 71] 6 x [2, 2, 2]