Build (method = -2) #dp: 2723 Step-3' Graph: 94 vertices and 299 arcs (0.01s) Step-4' Graph: 29 vertices and 169 arcs (0.01s) #V4/#V3 = 0.31 #A4/#A3 = 0.57 Ready! (0.01s) Optimize a model with 100 rows, 170 columns and 457 nonzeros Presolve removed 29 rows and 30 columns Presolve time: 0.00s Presolved: 71 rows, 140 columns, 368 nonzeros Variable types: 0 continuous, 140 integer (1 binary) Found heuristic solution: objective 494.0000000 Found heuristic solution: objective 334.0000000 Found heuristic solution: objective 281.0000000 Optimize a model with 71 rows, 140 columns and 368 nonzeros Presolved: 71 rows, 140 columns, 368 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.390e+02 Factor NZ : 1.022e+03 Factor Ops : 2.093e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 7.48729039e+03 -9.85784858e+03 1.57e+03 2.22e-16 1.81e+02 0s 1 1.73973683e+03 -2.66871230e+03 2.01e+02 8.88e-16 2.60e+01 0s 2 4.37886067e+02 -3.09416610e+02 3.16e+00 3.38e-14 2.42e+00 0s 3 3.15960929e+02 9.27398434e+01 3.37e-02 9.77e-15 6.87e-01 0s 4 2.60691767e+02 1.94286385e+02 1.07e-03 2.33e-15 2.04e-01 0s 5 2.50711462e+02 2.44848633e+02 6.23e-05 4.44e-16 1.80e-02 0s 6 2.50000341e+02 2.49997563e+02 2.71e-08 2.26e-16 8.55e-06 0s 7 2.50000000e+02 2.50000000e+02 3.04e-13 2.98e-16 8.79e-12 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 2.50000000e+02 Root relaxation: objective 2.500000e+02, 65 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 250.0000000 250.00000 0.0% - 0s Explored 0 nodes (65 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.500000000000e+02, best bound 2.500000000000e+02, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 250 Solution: 1 x [18, 71] 5 x [13, 71] 7 x [14, 70] 1 x [4, 70] 10 x [8, 69] 10 x [6, 68] 2 x [17, 67] 7 x [9, 66] 1 x [4, 66] 6 x [23, 65] 2 x [17, 65] 10 x [27, 64] 3 x [22, 63] 6 x [2, 62] 1 x [1, 62] 9 x [28, 61] 6 x [29, 60] 2 x [12, 60] 10 x [5, 59] 9 x [26, 58] 2 x [35, 57] 5 x [33, 57] 9 x [19, 56] 7 x [34, 55] 2 x [10, 55] 12 x [35, 54] 8 x [39, 53] 7 x [38, 52] 1 x [1, 52] 5 x [7, 51] 11 x [42, 50] 7 x [43, 49] 6 x [44, 48] 1 x [1, 48] 5 x [36, 47] 1 x [1, 47] 8 x [45, 46] 3 x [41, 46] 5 x [40, 41] 1 x [41, 41] 7 x [25, 37] 2 x [10, 37] 3 x [18, 32] 4 x [21, 31] 5 x [11, 30] 6 x [20, 24] 1 x [4, 24] 1 x [3, 16] 7 x [3, 15]