Build (method = -2) #dp: 1593 Step-3' Graph: 64 vertices and 228 arcs (0.01s) Step-4' Graph: 15 vertices and 130 arcs (0.01s) #V4/#V3 = 0.23 #A4/#A3 = 0.57 Ready! (0.01s) Optimize a model with 75 rows, 131 columns and 368 nonzeros Presolve removed 17 rows and 17 columns Presolve time: 0.00s Presolved: 58 rows, 114 columns, 318 nonzeros Variable types: 0 continuous, 114 integer (1 binary) Found heuristic solution: objective 1962.0000000 Found heuristic solution: objective 1237.0000000 Optimize a model with 58 rows, 114 columns and 318 nonzeros Presolved: 58 rows, 114 columns, 318 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.130e+02 Factor NZ : 8.770e+02 Factor Ops : 1.736e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.99209167e+04 -2.31353489e+04 3.12e+03 2.22e-16 6.67e+02 0s 1 6.54826962e+03 -6.45102688e+03 3.45e+02 6.66e-16 8.88e+01 0s 2 1.83556599e+03 -5.93548037e+02 1.04e+01 1.02e-14 9.70e+00 0s 3 1.30101914e+03 4.27904319e+02 1.02e-01 3.22e-15 3.20e+00 0s 4 1.02561490e+03 8.79524970e+02 1.15e-02 3.89e-16 5.35e-01 0s 5 1.00226679e+03 9.69838676e+02 2.24e-03 4.44e-16 1.19e-01 0s 6 9.92889764e+02 9.92149880e+02 1.14e-04 5.34e-16 2.71e-03 0s 7 9.92500055e+02 9.92499966e+02 8.23e-09 6.16e-16 3.25e-07 0s 8 9.92500000e+02 9.92500000e+02 1.39e-10 4.12e-16 3.25e-10 0s Barrier solved model in 8 iterations and 0.00 seconds Optimal objective 9.92500000e+02 Root relaxation: objective 9.925000e+02, 61 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 992.50000 0 2 1237.00000 992.50000 19.8% - 0s H 0 0 993.0000000 992.50000 0.05% - 0s Explored 0 nodes (61 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 9.930000000000e+02, best bound 9.930000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 993 Solution: 14 x [23] 49 x [23, 40] 31 x [23, 37] 14 x [4, 10] 20 x [11, 35] 12 x [6, 8] 48 x [17, 42] 3 x [17, 54] 2 x [11, 17] 29 x [17, 43] 5 x [18] 19 x [18, 53] 25 x [9, 18] 2 x [4, 18] 22 x [55, 60] 47 x [30, 60] 3 x [16, 49] 35 x [16, 41] 44 x [57, 58] 26 x [49, 57] 38 x [51, 59] 1 x [47, 51] 37 x [26, 51] 9 x [51, 55] 22 x [14, 56] 12 x [24, 48] 5 x [7, 33] 32 x [32, 33] 50 x [3, 33] 2 x [27, 45] 49 x [27, 44] 6 x [12, 27] 91 x [22, 52] 1 x [22, 34] 13 x [5, 12] 3 x [25, 46] 23 x [25, 50] 6 x [13, 25] 5 x [14, 25] 1 x [46] 42 x [13, 19] 14 x [1, 34] 3 x [31, 39] 29 x [21, 31] 1 x [31, 47] 3 x [36, 38] 6 x [29, 36] 1 x [15, 34] 16 x [28, 39] 19 x [2, 20] 3 x [2, 34]