Build (method = -2) #dp: 207 Step-3' Graph: 24 vertices and 103 arcs (0.00s) Step-4' Graph: 17 vertices and 89 arcs (0.00s) #V4/#V3 = 0.71 #A4/#A3 = 0.86 Ready! (0.00s) Optimize a model with 37 rows, 90 columns and 244 nonzeros Presolve removed 16 rows and 21 columns Presolve time: 0.00s Presolved: 21 rows, 69 columns, 177 nonzeros Variable types: 0 continuous, 69 integer (6 binary) Found heuristic solution: objective 183.0000000 Found heuristic solution: objective 165.0000000 Optimize a model with 21 rows, 69 columns and 177 nonzeros Presolved: 21 rows, 69 columns, 177 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 8.000e+01 Factor NZ : 2.310e+02 Factor Ops : 3.311e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 6.86475757e+02 -9.84629795e+02 8.70e+02 1.43e-01 3.78e+01 0s 1 2.44132579e+02 -2.67371030e+02 8.12e+01 4.44e-16 5.31e+00 0s 2 1.59470464e+02 4.56031579e+01 3.21e+00 4.44e-16 8.12e-01 0s 3 1.21797167e+02 9.83141010e+01 9.61e-02 2.22e-16 1.62e-01 0s 4 1.15850110e+02 1.14221570e+02 4.35e-03 2.60e-16 1.12e-02 0s 5 1.15501082e+02 1.15497064e+02 3.64e-14 1.87e-16 2.77e-05 0s 6 1.15500000e+02 1.15500000e+02 4.26e-14 1.39e-16 2.79e-11 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 1.15500000e+02 Root relaxation: objective 1.155000e+02, 19 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 115.50000 0 2 165.00000 115.50000 30.0% - 0s H 0 0 116.0000000 115.50000 0.43% - 0s Explored 0 nodes (27 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.160000000000e+02, best bound 1.160000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 116 Solution: 8 x [6, 13] 1 x [9] 1 x [6, 9] 6 x [7] 17 x [3] 5 x [4, 17] 12 x [2] 4 x [2, 15] 1 x [5, 16] 16 x [1, 16] 12 x [10, 11] 5 x [11, 20] 2 x [17, 20] 1 x [15, 20] 12 x [14, 19] 1 x [8, 18] 1 x [8, 8] 1 x [12] 5 x [12, 12] 5 x [6, 18, 18]