Build (method = -2) #dp: 1282 Step-3' Graph: 162 vertices and 479 arcs (0.01s) Step-4' Graph: 62 vertices and 279 arcs (0.01s) #V4/#V3 = 0.38 #A4/#A3 = 0.58 Ready! (0.01s) Optimize a model with 122 rows, 280 columns and 720 nonzeros Presolve removed 53 rows and 56 columns Presolve time: 0.00s Presolved: 69 rows, 224 columns, 558 nonzeros Variable types: 0 continuous, 224 integer (0 binary) Found heuristic solution: objective 3567.0000000 Found heuristic solution: objective 3388.0000000 Found heuristic solution: objective 3290.0000000 Optimize a model with 69 rows, 224 columns and 558 nonzeros Presolve removed 1 rows and 1 columns Presolved: 68 rows, 223 columns, 559 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 3.870e+02 Factor NZ : 1.205e+03 Factor Ops : 2.479e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 6.96787486e+03 -3.55675275e+04 3.76e+04 1.11e-16 4.20e+02 0s 1 4.30397833e+03 -1.27352487e+04 6.14e+03 6.66e-16 8.21e+01 0s 2 3.48048914e+03 -1.61065045e+03 2.10e+02 4.44e-16 1.21e+01 0s 3 3.29215077e+03 1.62714374e+03 4.01e+00 3.33e-16 3.66e+00 0s 4 3.23285369e+03 3.09849702e+03 1.42e-12 2.15e-16 2.95e-01 0s 5 3.21722931e+03 3.19121130e+03 5.12e-13 1.24e-16 5.71e-02 0s 6 3.21700034e+03 3.21699781e+03 7.96e-13 2.39e-16 5.55e-06 0s 7 3.21700000e+03 3.21700000e+03 1.82e-12 2.22e-16 6.86e-12 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 3.21700000e+03 Root relaxation: objective 3.217000e+03, 152 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 3217.0000000 3217.00000 0.0% - 0s Explored 0 nodes (152 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 3.217000000000e+03, best bound 3.217000000000e+03, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 3217 Solution: 61 x [16] 34 x [15] 13 x [43] 50 x [48] 58 x [7] 54 x [23] 97 x [30] 83 x [34] 96 x [4] 24 x [31] 97 x [17] 74 x [6] 57 x [21] 51 x [60] 88 x [5, 39] 67 x [45] 59 x [22] 64 x [24] 6 x [8] 60 x [9] 90 x [42] 58 x [40] 41 x [11, 50] 70 x [2] 91 x [10] 5 x [33] 5 x [33, 36] 100 x [47] 3 x [38] 18 x [26, 38, 55] 10 x [38, 55] 28 x [12, 26] 88 x [54] 1 x [54, 55] 57 x [18] 4 x [59] 75 x [29, 59] 68 x [14] 61 x [46] 88 x [56] 2 x [5, 56] 70 x [1] 83 x [19, 27] 83 x [28] 87 x [41, 58] 49 x [49] 10 x [49, 55] 43 x [20] 3 x [20, 50] 11 x [20, 55] 79 x [57] 30 x [44] 39 x [3, 44] 5 x [44, 55] 15 x [51] 83 x [35, 51] 54 x [32] 9 x [19, 32] 67 x [37] 52 x [53] 11 x [53, 55] 88 x [13] 10 x [13, 58] 40 x [25, 52] 35 x [25, 26] 5 x [25, 55]