Build (method = -2) #dp: 923 Step-3' Graph: 48 vertices and 254 arcs (0.00s) Step-4' Graph: 44 vertices and 246 arcs (0.00s) #V4/#V3 = 0.92 #A4/#A3 = 0.97 Ready! (0.00s) Optimize a model with 104 rows, 247 columns and 672 nonzeros Presolve removed 58 rows and 67 columns Presolve time: 0.00s Presolved: 46 rows, 180 columns, 475 nonzeros Variable types: 0 continuous, 180 integer (0 binary) Found heuristic solution: objective 1795.0000000 Found heuristic solution: objective 1709.0000000 Found heuristic solution: objective 1661.0000000 Optimize a model with 46 rows, 180 columns and 475 nonzeros Presolved: 46 rows, 180 columns, 475 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.660e+02 Factor NZ : 7.730e+02 Factor Ops : 1.530e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 4.47565263e+03 -1.30701371e+04 1.28e+04 2.22e-16 1.87e+02 0s 1 2.33194542e+03 -5.09668822e+03 2.01e+03 7.22e-16 3.70e+01 0s 2 1.73458189e+03 -7.78621860e+01 2.48e+01 3.11e-15 5.02e+00 0s 3 1.48583135e+03 9.53315179e+02 2.02e-01 4.37e-16 1.44e+00 0s 4 1.37579143e+03 1.24797506e+03 6.50e-02 8.88e-16 3.46e-01 0s 5 1.33726637e+03 1.27686970e+03 2.17e-02 5.07e-16 1.64e-01 0s 6 1.32201666e+03 1.30699015e+03 2.50e-03 4.98e-16 4.07e-02 0s 7 1.31955080e+03 1.31943242e+03 2.76e-05 7.51e-16 3.21e-04 0s 8 1.31950005e+03 1.31949993e+03 1.48e-12 5.55e-16 3.21e-07 0s 9 1.31950000e+03 1.31950000e+03 5.68e-13 4.21e-16 3.34e-13 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 1.31950000e+03 Root relaxation: objective 1.319500e+03, 73 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 1319.50000 0 4 1661.00000 1319.50000 20.6% - 0s H 0 0 1320.0000000 1319.50000 0.04% - 0s Explored 0 nodes (92 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.320000000000e+03, best bound 1.320000000000e+03, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 1320 Solution: 14 x [44] 48 x [35] 19 x [25] 25 x [48] 45 x [20] 48 x [4] 40 x [58] 6 x [46] 48 x [26] 13 x [15] 11 x [41] 25 x [55] 6 x [30] 5 x [59] 14 x [53] 16 x [18] 31 x [6] 1 x [39] 19 x [29, 39] 28 x [29, 36] 42 x [3] 4 x [2, 43] 31 x [2, 56] 16 x [2, 16] 42 x [8] 35 x [24, 27] 21 x [7, 27] 39 x [57] 31 x [10, 27] 38 x [31] 48 x [12] 17 x [2, 33] 27 x [2, 19, 29] 7 x [38, 54] 19 x [17, 54] 2 x [32, 54] 38 x [28, 54] 27 x [54, 60] 2 x [23, 54] 1 x [49] 1 x [22] 6 x [51] 15 x [40] 5 x [1, 54] 2 x [1, 27] 38 x [14, 21] 1 x [42] 28 x [37] 5 x [14, 37] 11 x [50] 11 x [11, 50] 11 x [13] 91 x [47, 52] 6 x [9, 52] 75 x [5, 34] 50 x [45, 45] 1 x [5] 1 x [5, 5] 4 x [5, 5, 27] 9 x [9, 47]