Build (method = -2) #dp: 1238 Step-3' Graph: 65 vertices and 415 arcs (0.01s) Step-4' Graph: 64 vertices and 413 arcs (0.01s) #V4/#V3 = 0.98 #A4/#A3 = 1.00 Ready! (0.01s) Optimize a model with 124 rows, 414 columns and 1129 nonzeros Presolve removed 56 rows and 63 columns Presolve time: 0.00s Presolved: 68 rows, 351 columns, 947 nonzeros Variable types: 0 continuous, 351 integer (0 binary) Found heuristic solution: objective 1924.0000000 Found heuristic solution: objective 1911.0000000 Found heuristic solution: objective 1808.0000000 Found heuristic solution: objective 1722.0000000 Optimize a model with 68 rows, 351 columns and 947 nonzeros Presolved: 68 rows, 351 columns, 947 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 5.490e+02 Factor NZ : 1.430e+03 Factor Ops : 3.750e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 8.02189140e+03 -3.88593178e+04 3.24e+04 2.22e-16 3.02e+02 0s 1 3.51042154e+03 -1.63731775e+04 6.28e+03 5.55e-16 6.55e+01 0s 2 2.16680906e+03 -3.85370226e+03 5.01e+02 3.77e-15 1.03e+01 0s 3 1.92122206e+03 -3.95924134e+02 2.10e+00 1.33e-15 3.25e+00 0s 4 1.63101192e+03 7.15379000e+02 2.71e-01 9.16e-16 1.28e+00 0s 5 1.44059385e+03 1.07021816e+03 5.83e-02 9.33e-16 5.19e-01 0s 6 1.39580372e+03 1.30519922e+03 9.25e-03 8.95e-16 1.27e-01 0s 7 1.38652157e+03 1.37902702e+03 1.77e-03 1.14e-15 1.05e-02 0s 8 1.38400942e+03 1.38398702e+03 2.27e-12 1.06e-15 3.14e-05 0s 9 1.38400000e+03 1.38400000e+03 5.68e-13 1.22e-15 3.53e-11 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 1.38400000e+03 Root relaxation: objective 1.384000e+03, 124 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 1384.00000 0 10 1722.00000 1384.00000 19.6% - 0s H 0 0 1385.0000000 1384.00000 0.07% - 0s * 0 0 0 1384.0000000 1384.00000 0.0% - 0s Cutting planes: Gomory: 2 MIR: 2 Explored 0 nodes (199 simplex iterations) in 0.02 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.384000000000e+03, best bound 1.384000000000e+03, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.02 seconds Total run time: 0.03 seconds Objective: 1384 Solution: 16 x [54] 48 x [30] 11 x [19] 4 x [42] 49 x [39] 33 x [32] 99 x [52] 35 x [22] 35 x [26] 18 x [7] 10 x [58] 9 x [12, 18] 49 x [21] 1 x [4, 18] 18 x [15] 19 x [14] 37 x [11] 50 x [8] 14 x [56] 23 x [3, 56] 7 x [2] 36 x [47] 37 x [17, 60] 14 x [5] 11 x [5, 17] 22 x [25, 48] 13 x [25, 36] 12 x [25, 28] 52 x [17, 28] 22 x [18, 34] 2 x [10, 25] 1 x [10, 18] 49 x [3, 6] 7 x [25, 53] 15 x [25, 33] 64 x [23] 17 x [41] 7 x [31] 2 x [31, 35] 31 x [27] 31 x [29, 35] 7 x [35, 44] 4 x [35, 40] 13 x [13, 24] 1 x [13, 35] 38 x [50] 46 x [9, 9, 50] 31 x [16, 24] 20 x [24, 55] 7 x [24, 49] 8 x [18, 49] 35 x [43, 45] 13 x [43, 46] 5 x [38] 2 x [38, 43] 23 x [1, 43] 1 x [25, 51, 57] 5 x [18, 57, 57] 10 x [20, 59] 4 x [20, 35, 59] 10 x [35, 37, 59] 31 x [59, 59] 40 x [35, 51, 51]