Build (method = -2) #dp: 2117 Step-3' Graph: 64 vertices and 234 arcs (0.01s) Step-4' Graph: 34 vertices and 174 arcs (0.01s) #V4/#V3 = 0.53 #A4/#A3 = 0.74 Ready! (0.01s) Optimize a model with 115 rows, 175 columns and 462 nonzeros Presolve removed 55 rows and 58 columns Presolve time: 0.00s Presolved: 60 rows, 117 columns, 292 nonzeros Variable types: 0 continuous, 117 integer (0 binary) Found heuristic solution: objective 486.0000000 Found heuristic solution: objective 337.0000000 Optimize a model with 60 rows, 117 columns and 292 nonzeros Presolve removed 1 rows and 1 columns Presolved: 59 rows, 116 columns, 290 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.150e+02 Factor NZ : 9.310e+02 Factor Ops : 1.898e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 5.48823827e+03 -4.22641339e+03 3.98e+03 0.00e+00 9.18e+01 0s 1 1.26511341e+03 -9.98127707e+02 4.33e+02 1.89e-15 1.27e+01 0s 2 4.37419510e+02 1.62330942e+02 1.14e-13 1.67e-15 1.05e+00 0s 3 3.45486071e+02 2.84351234e+02 5.77e-13 7.95e-16 2.34e-01 0s 4 3.14449183e+02 3.03540306e+02 9.15e-14 1.36e-15 4.18e-02 0s 5 3.13068283e+02 3.08650490e+02 1.42e-13 1.11e-15 1.69e-02 0s 6 3.10620637e+02 3.10335424e+02 3.07e-13 1.33e-15 1.09e-03 0s 7 3.10500096e+02 3.10499868e+02 1.42e-13 1.05e-15 8.75e-07 0s 8 3.10500000e+02 3.10500000e+02 1.73e-13 1.44e-15 8.75e-10 0s 9 3.10500000e+02 3.10500000e+02 1.59e-13 9.99e-16 8.75e-13 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 3.10500000e+02 Root relaxation: objective 3.105000e+02, 44 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 310.50000 0 2 337.00000 310.50000 7.86% - 0s H 0 0 311.0000000 310.50000 0.16% - 0s Explored 0 nodes (44 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 3.110000000000e+02, best bound 3.110000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 311 Solution: 4 x [81] 8 x [80] 6 x [79] 6 x [78] 5 x [77] 9 x [76] 7 x [75] 6 x [74] 6 x [73] 3 x [72] 6 x [71] 7 x [70] 5 x [69] 3 x [68] 4 x [67] 6 x [66] 3 x [65] 2 x [64] 8 x [63] 8 x [62] 9 x [61] 2 x [1, 61] 5 x [1, 60] 5 x [3, 59] 1 x [2, 59] 2 x [4, 58] 7 x [2, 57] 6 x [6, 56] 1 x [4, 56] 1 x [2, 56] 7 x [7, 55] 1 x [8, 54] 5 x [5, 54] 6 x [9, 53] 2 x [8, 53] 4 x [10, 52] 5 x [11, 51] 2 x [10, 51] 3 x [12, 50] 3 x [13, 49] 1 x [12, 49] 4 x [14, 48] 9 x [15, 47] 7 x [16, 46] 5 x [14, 45] 4 x [16, 44] 6 x [19, 43] 6 x [17, 42] 1 x [17, 41] 2 x [15, 41] 8 x [21, 40] 7 x [23, 39] 1 x [24, 38] 2 x [12, 38] 5 x [24, 37] 10 x [26, 36] 1 x [23, 36] 6 x [25, 35] 1 x [34] 2 x [28, 34] 1 x [25, 34] 1 x [22, 34] 1 x [14, 34] 6 x [29, 33] 1 x [30, 32] 3 x [29, 32] 6 x [30, 31] 1 x [30, 30] 4 x [20, 27] 8 x [18, 22] 2 x [10, 11]