Build (method = -2) #dp: 1554 Step-3' Graph: 240 vertices and 713 arcs (0.01s) Step-4' Graph: 113 vertices and 459 arcs (0.01s) #V4/#V3 = 0.47 #A4/#A3 = 0.64 Ready! (0.01s) Optimize a model with 153 rows, 460 columns and 1158 nonzeros Presolve removed 36 rows and 45 columns Presolve time: 0.01s Presolved: 117 rows, 415 columns, 1071 nonzeros Variable types: 0 continuous, 415 integer (0 binary) Found heuristic solution: objective 1241.0000000 Optimize a model with 117 rows, 415 columns and 1071 nonzeros Presolved: 117 rows, 415 columns, 1071 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 8.220e+02 Factor NZ : 2.746e+03 Factor Ops : 8.111e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 3.89799599e+03 -3.69871612e+04 2.54e+04 2.22e-16 2.04e+02 0s 1 2.04552341e+03 -1.47370734e+04 4.45e+03 5.55e-16 4.28e+01 0s 2 1.45240065e+03 -3.80376741e+03 4.78e+02 4.44e-16 8.01e+00 0s 3 1.22440164e+03 1.65996835e+01 4.44e+01 5.27e-16 1.51e+00 0s 4 1.13197372e+03 5.12081859e+02 6.66e+00 2.27e-16 7.42e-01 0s 5 1.10374883e+03 9.68502429e+02 2.77e+00 2.50e-16 1.62e-01 0s 6 1.08922832e+03 1.08139451e+03 4.80e-01 3.33e-16 9.52e-03 0s 7 1.08702361e+03 1.08695674e+03 3.95e-03 2.22e-16 8.11e-05 0s 8 1.08700003e+03 1.08699996e+03 3.91e-13 2.57e-16 8.11e-08 0s 9 1.08700000e+03 1.08700000e+03 4.87e-13 2.62e-16 8.11e-11 0s Barrier solved model in 9 iterations and 0.01 seconds Optimal objective 1.08700000e+03 Root relaxation: objective 1.087000e+03, 255 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 1087.0000000 1087.00000 0.0% - 0s Explored 0 nodes (255 simplex iterations) in 0.02 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.087000000000e+03, best bound 1.087000000000e+03, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.02 seconds Total run time: 0.04 seconds Objective: 1087 Solution: 77 x [12] 13 x [6] 2 x [13, 22] 78 x [23] 3 x [22, 23] 43 x [24] 32 x [5, 24] 20 x [40] 25 x [39] 3 x [22, 39] 52 x [14] 2 x [11, 14] 1 x [14, 22] 2 x [22, 26] 14 x [27] 57 x [10] 2 x [2, 22] 11 x [31] 34 x [4, 31] 36 x [38] 5 x [22, 38] 28 x [36] 8 x [17, 36] 17 x [18, 36] 9 x [18, 28, 36] 3 x [22, 36] 38 x [15, 18] 15 x [15, 34] 35 x [15, 21, 34] 5 x [15, 22] 8 x [22, 30] 3 x [29] 11 x [29, 34] 56 x [11, 21, 28, 29, 37] 8 x [22, 29] 7 x [33] 29 x [1, 33] 17 x [20, 33] 6 x [22, 33] 22 x [19] 17 x [19, 34] 3 x [19, 22, 34] 7 x [1, 19] 11 x [19, 22] 67 x [35] 7 x [9, 35] 21 x [1, 35] 3 x [16, 35] 10 x [9, 22, 32] 1 x [8] 16 x [8, 37] 19 x [3, 25] 22 x [7, 25] 46 x [3, 7]