Build (method = -2) #dp: 515 Step-3' Graph: 60 vertices and 271 arcs (0.00s) Step-4' Graph: 45 vertices and 241 arcs (0.00s) #V4/#V3 = 0.75 #A4/#A3 = 0.89 Ready! (0.00s) Optimize a model with 65 rows, 242 columns and 649 nonzeros Presolve removed 12 rows and 15 columns Presolve time: 0.00s Presolved: 53 rows, 227 columns, 612 nonzeros Variable types: 0 continuous, 227 integer (0 binary) Found heuristic solution: objective 1872.0000000 Found heuristic solution: objective 1474.0000000 Optimize a model with 53 rows, 227 columns and 612 nonzeros Presolved: 53 rows, 227 columns, 612 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 3.500e+02 Factor NZ : 1.074e+03 Factor Ops : 2.615e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 6.71069830e+03 -2.47546253e+04 2.51e+04 2.22e-16 3.07e+02 0s 1 2.69781959e+03 -1.08968932e+04 3.54e+03 5.55e-16 5.67e+01 0s 2 1.70730493e+03 -1.77386782e+03 2.14e+02 1.78e-15 8.39e+00 0s 3 1.28767859e+03 -4.45489151e+01 8.71e+00 2.22e-16 2.89e+00 0s 4 1.03511351e+03 6.05398492e+02 3.00e-01 3.33e-16 9.25e-01 0s 5 9.92497746e+02 9.03478153e+02 7.72e-02 2.22e-16 1.92e-01 0s 6 9.83296499e+02 9.80930615e+02 1.44e-03 3.39e-16 5.09e-03 0s 7 9.83000018e+02 9.82999853e+02 2.27e-13 3.33e-16 3.55e-07 0s 8 9.83000000e+02 9.83000000e+02 3.41e-13 2.22e-16 3.55e-10 0s 9 9.83000000e+02 9.83000000e+02 1.14e-12 3.70e-16 6.66e-16 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 9.83000000e+02 Root relaxation: objective 9.830000e+02, 115 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 983.0000000 983.00000 0.0% - 0s Explored 0 nodes (115 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 9.830000000000e+02, best bound 9.830000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 983 Solution: 11 x [14, 15] 35 x [14, 15, 19] 79 x [15, 19] 24 x [1, 7] 107 x [1, 14] 7 x [13] 15 x [8] 46 x [7, 8] 54 x [4, 7] 55 x [3, 4] 24 x [17] 84 x [11, 17] 30 x [10] 81 x [9, 10] 43 x [5, 12] 27 x [5, 9] 79 x [5, 18] 15 x [2, 5] 70 x [16, 20] 22 x [18, 20] 75 x [6, 19, 20]