Build (method = -2) #dp: 1868 Step-3' Graph: 64 vertices and 231 arcs (0.01s) Step-4' Graph: 31 vertices and 165 arcs (0.01s) #V4/#V3 = 0.48 #A4/#A3 = 0.71 Ready! (0.01s) Optimize a model with 109 rows, 166 columns and 441 nonzeros Presolve removed 65 rows and 68 columns Presolve time: 0.00s Presolved: 44 rows, 98 columns, 240 nonzeros Variable types: 0 continuous, 98 integer (13 binary) Found heuristic solution: objective 176.0000000 Found heuristic solution: objective 166.0000000 Found heuristic solution: objective 151.0000000 Optimize a model with 44 rows, 98 columns and 240 nonzeros Presolved: 44 rows, 98 columns, 240 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 8.500e+01 Factor NZ : 6.130e+02 Factor Ops : 1.165e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 3.13662516e+03 -2.66963967e+03 1.21e+02 2.22e-16 8.30e+01 0s 1 7.67029753e+02 -8.89390929e+02 2.40e+01 6.66e-16 1.33e+01 0s 2 2.01089296e+02 -2.42791491e+01 7.93e-01 3.11e-14 1.19e+00 0s 3 1.61302063e+02 8.04559093e+01 6.76e-03 1.20e-14 3.80e-01 0s 4 1.40332051e+02 1.26136068e+02 3.12e-04 1.33e-15 6.67e-02 0s 5 1.37370160e+02 1.34738656e+02 1.39e-04 2.22e-16 1.24e-02 0s 6 1.36016145e+02 1.35976972e+02 2.96e-06 2.22e-16 1.84e-04 0s 7 1.36000000e+02 1.36000000e+02 1.53e-11 3.33e-16 1.25e-09 0s 8 1.36000000e+02 1.36000000e+02 1.31e-13 3.33e-16 1.25e-12 0s Barrier solved model in 8 iterations and 0.00 seconds Optimal objective 1.36000000e+02 Root relaxation: objective 1.360000e+02, 45 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 136.0000000 136.00000 0.0% - 0s Explored 0 nodes (45 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.360000000000e+02, best bound 1.360000000000e+02, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.01 seconds Total run time: 0.03 seconds Objective: 136 Solution: 1 x [78] 3 x [77] 5 x [76] 1 x [75] 3 x [74] 3 x [73] 1 x [72] 2 x [71] 2 x [70] 2 x [69] 3 x [68] 1 x [67] 2 x [66] 4 x [65] 2 x [64] 4 x [63] 5 x [62] 4 x [61] 1 x [60] 1 x [59] 1 x [58] 2 x [1, 58] 1 x [2, 57] 4 x [56] 1 x [4, 55] 1 x [5, 54] 1 x [3, 54] 1 x [6, 53] 3 x [4, 52] 1 x [7, 51] 2 x [8, 50] 1 x [6, 50] 5 x [49] 2 x [13, 48] 4 x [47] 1 x [15, 46] 1 x [14, 46] 4 x [14, 45] 8 x [44] 1 x [19, 43] 2 x [18, 43] 1 x [20, 42] 2 x [16, 42] 1 x [21, 41] 3 x [17, 41] 1 x [22, 40] 3 x [9, 40] 3 x [23, 39] 1 x [24, 38] 1 x [12, 38] 4 x [23, 37] 1 x [26, 36] 1 x [11, 36] 2 x [25, 35] 1 x [10, 35] 2 x [28, 34] 1 x [2, 34] 4 x [29, 33] 1 x [30, 32] 4 x [27, 32] 1 x [30, 31] 1 x [31, 31]