Build (method = -2) #dp: 3541 Step-3' Graph: 114 vertices and 359 arcs (0.01s) Step-4' Graph: 29 vertices and 189 arcs (0.01s) #V4/#V3 = 0.25 #A4/#A3 = 0.53 Ready! (0.01s) Optimize a model with 110 rows, 190 columns and 517 nonzeros Presolve removed 29 rows and 30 columns Presolve time: 0.00s Presolved: 81 rows, 160 columns, 428 nonzeros Variable types: 0 continuous, 160 integer (1 binary) Found heuristic solution: objective 498.0000000 Found heuristic solution: objective 312.0000000 Optimize a model with 81 rows, 160 columns and 428 nonzeros Presolve removed 1 rows and 1 columns Presolved: 80 rows, 159 columns, 426 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.570e+02 Factor NZ : 1.049e+03 Factor Ops : 2.101e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 6.86123894e+03 -7.89817956e+03 1.22e+03 2.22e-16 1.41e+02 0s 1 1.59211053e+03 -2.59462290e+03 1.55e+02 8.88e-16 2.12e+01 0s 2 4.17471487e+02 -3.23354681e+02 3.45e+00 2.75e-14 2.12e+00 0s 3 2.95413048e+02 8.09823061e+01 4.15e-02 6.44e-15 5.77e-01 0s 4 2.52935976e+02 2.26384172e+02 2.26e-03 4.44e-16 7.14e-02 0s 5 2.50038013e+02 2.49753763e+02 5.01e-06 2.60e-16 7.64e-04 0s 6 2.50000000e+02 2.49999999e+02 1.07e-11 4.37e-16 1.69e-09 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 2.50000000e+02 Root relaxation: objective 2.500000e+02, 78 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 (78 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: 0.03 seconds Objective: 250 Solution: 12 x [23, 81] 7 x [24, 80] 6 x [27, 79] 6 x [9, 78] 5 x [26, 77] 6 x [2, 76] 5 x [13, 75] 5 x [38, 74] 1 x [21, 74] 1 x [21, 73] 4 x [17, 73] 5 x [36, 72] 1 x [18, 72] 9 x [15, 71] 1 x [16, 70] 4 x [1, 70] 5 x [35, 69] 1 x [11, 69] 8 x [44, 68] 3 x [42, 67] 1 x [11, 67] 9 x [41, 66] 1 x [11, 66] 9 x [40, 65] 1 x [7, 65] 9 x [10, 64] 3 x [12, 63] 2 x [50, 62] 1 x [5, 62] 7 x [37, 61] 4 x [52, 60] 8 x [8, 59] 6 x [54, 58] 1 x [53, 58] 3 x [53, 57] 2 x [52, 56] 7 x [5, 55] 1 x [55, 55] 7 x [6, 51] 5 x [46, 49] 1 x [6, 49] 7 x [45, 48] 3 x [19, 47] 1 x [7, 47] 8 x [22, 43] 1 x [18, 39] 4 x [4, 39] 7 x [14, 34] 5 x [32, 33] 5 x [29, 31] 6 x [25, 30] 10 x [20, 28] 10 x [3, 18]