Build (method = -2) #dp: 1475 Step-3' Graph: 32 vertices and 182 arcs (0.00s) Step-4' Graph: 15 vertices and 148 arcs (0.01s) #V4/#V3 = 0.47 #A4/#A3 = 0.81 Ready! (0.01s) Optimize a model with 95 rows, 149 columns and 422 nonzeros Presolve removed 38 rows and 38 columns Presolve time: 0.00s Presolved: 57 rows, 111 columns, 310 nonzeros Variable types: 0 continuous, 111 integer (0 binary) Found heuristic solution: objective 1424.0000000 Found heuristic solution: objective 909.0000000 Optimize a model with 57 rows, 111 columns and 310 nonzeros Presolved: 57 rows, 111 columns, 310 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.110e+02 Factor NZ : 8.500e+02 Factor Ops : 1.663e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.50300713e+04 -6.37446172e+03 3.43e+03 1.11e-16 1.97e+02 0s 1 2.78445269e+03 -1.48337443e+03 2.65e+02 5.55e-16 2.30e+01 0s 2 1.14547100e+03 2.62667451e+02 9.12e+00 4.88e-15 3.45e+00 0s 3 8.43122398e+02 7.02772753e+02 8.47e-02 4.44e-16 5.28e-01 0s 4 8.03906386e+02 7.70517374e+02 1.53e-02 3.33e-16 1.26e-01 0s 5 7.97033463e+02 7.95711677e+02 3.67e-04 3.33e-16 4.97e-03 0s 6 7.96500012e+02 7.96499981e+02 7.46e-09 3.33e-16 1.16e-07 0s 7 7.96500000e+02 7.96500000e+02 2.56e-13 4.44e-16 1.16e-13 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 7.96500000e+02 Root relaxation: objective 7.965000e+02, 50 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 796.50000 0 6 909.00000 796.50000 12.4% - 0s H 0 0 798.0000000 796.50000 0.19% - 0s H 0 0 797.0000000 796.50000 0.06% - 0s Explored 0 nodes (50 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 7.970000000000e+02, best bound 7.970000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 797 Solution: 25 x [27] 2 x [27, 50] 7 x [27, 42] 10 x [2, 23] 18 x [23, 78] 8 x [10, 22] 2 x [22, 50] 22 x [22, 36] 10 x [19, 37] 19 x [37, 67] 17 x [35, 77] 10 x [26, 77] 2 x [26, 70] 24 x [41, 70] 8 x [51, 70] 4 x [19, 49] 15 x [49, 80] 2 x [49, 50] 1 x [25, 26] 24 x [25, 40] 1 x [2, 25] 8 x [4, 25] 35 x [5] 12 x [58, 61] 27 x [53] 18 x [34, 48] 8 x [32, 58] 27 x [20] 9 x [30, 75] 1 x [43, 54] 27 x [31] 21 x [28, 52] 12 x [48, 55] 22 x [44] 4 x [24, 52] 3 x [24, 43] 2 x [8] 5 x [8, 48] 1 x [8, 30] 2 x [13, 47] 34 x [62, 73] 8 x [17, 68] 2 x [17, 47] 14 x [3, 9] 24 x [63, 74] 11 x [18, 45] 1 x [16, 38] 10 x [9, 38] 13 x [14, 66] 1 x [11, 15] 1 x [29, 33] 3 x [33, 63] 2 x [15, 33] 2 x [60, 72] 17 x [29, 72] 14 x [57, 69] 9 x [56, 60] 24 x [56, 59] 3 x [46, 71] 19 x [21, 76] 1 x [1, 21] 7 x [21, 21] 1 x [1] 1 x [39, 71] 2 x [7, 71] 21 x [7, 39] 10 x [6, 7] 23 x [64, 79] 15 x [16, 66] 5 x [15, 65] 24 x [12, 65]