Build (method = -2) #dp: 1419 Step-3' Graph: 231 vertices and 686 arcs (0.01s) Step-4' Graph: 80 vertices and 384 arcs (0.01s) #V4/#V3 = 0.35 #A4/#A3 = 0.56 Ready! (0.01s) Optimize a model with 140 rows, 385 columns and 999 nonzeros Presolve removed 45 rows and 56 columns Presolve time: 0.00s Presolved: 95 rows, 329 columns, 843 nonzeros Variable types: 0 continuous, 329 integer (0 binary) Found heuristic solution: objective 2855.0000000 Found heuristic solution: objective 2279.0000000 Optimize a model with 95 rows, 329 columns and 843 nonzeros Presolved: 95 rows, 329 columns, 843 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 4.960e+02 Factor NZ : 1.681e+03 Factor Ops : 3.319e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.03812788e+04 -5.00574352e+04 9.47e+04 2.22e-16 5.93e+02 0s 1 6.73855862e+03 -1.88774052e+04 1.45e+04 4.44e-16 1.03e+02 0s 2 3.11182179e+03 -3.64465979e+03 1.11e+03 1.78e-14 1.38e+01 0s 3 2.43191795e+03 3.18830863e+02 4.31e+01 5.44e-15 3.21e+00 0s 4 2.22457664e+03 1.04329996e+03 6.85e+00 3.33e-15 1.76e+00 0s 5 2.19684568e+03 2.08124499e+03 1.96e+00 2.78e-16 1.72e-01 0s 6 2.18349907e+03 2.18183216e+03 1.04e-01 2.61e-16 2.50e-03 0s 7 2.18300009e+03 2.18299986e+03 1.72e-07 3.33e-16 3.36e-07 0s 8 2.18300000e+03 2.18300000e+03 4.55e-13 2.83e-16 3.36e-10 0s 9 2.18300000e+03 2.18300000e+03 2.27e-13 2.22e-16 3.38e-16 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 2.18300000e+03 Root relaxation: objective 2.183000e+03, 214 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 2183.0000000 2183.00000 0.0% - 0s Explored 0 nodes (214 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.183000000000e+03, best bound 2.183000000000e+03, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.01 seconds Total run time: 0.03 seconds Objective: 2183 Solution: 54 x [22] 28 x [28] 23 x [34] 52 x [42] 71 x [18] 27 x [54] 35 x [31] 31 x [14, 23, 31] 49 x [36] 67 x [60] 85 x [6] 39 x [27] 12 x [47] 57 x [30] 8 x [59] 69 x [32] 93 x [24] 66 x [2] 96 x [5] 39 x [44] 4 x [10] 59 x [10, 45] 20 x [7] 57 x [7, 20] 16 x [20, 49, 57] 16 x [20, 49] 35 x [52] 4 x [1, 52] 14 x [45, 52] 4 x [58] 32 x [57, 58] 3 x [14, 43] 2 x [19] 44 x [19, 29] 1 x [19, 20] 1 x [14, 19] 20 x [13] 39 x [12, 13] 34 x [9] 19 x [9, 53] 31 x [25, 41] 3 x [41, 53] 11 x [17] 1 x [17, 53] 37 x [16] 8 x [16, 56] 13 x [26] 48 x [3, 26, 56] 4 x [26, 50] 10 x [14, 26] 94 x [4, 37] 39 x [46] 2 x [33] 10 x [33, 55] 67 x [33, 53] 2 x [8, 39] 32 x [8, 14, 39] 38 x [12, 39, 51] 20 x [12, 39] 7 x [40] 59 x [40, 51] 2 x [35, 40] 6 x [40, 53] 2 x [14, 40] 5 x [37] 16 x [21] 10 x [15] 54 x [15, 48] 32 x [11] 41 x [38] 39 x [8, 38] 15 x [14, 38]