Build (method = -2) #dp: 714 Step-3' Graph: 109 vertices and 401 arcs (0.00s) Step-4' Graph: 90 vertices and 363 arcs (0.00s) #V4/#V3 = 0.83 #A4/#A3 = 0.91 Ready! (0.00s) Optimize a model with 109 rows, 364 columns and 918 nonzeros Presolve removed 25 rows and 46 columns Presolve time: 0.00s Presolved: 84 rows, 318 columns, 820 nonzeros Variable types: 0 continuous, 318 integer (0 binary) Found heuristic solution: objective 167.0000000 Optimize a model with 84 rows, 318 columns and 820 nonzeros Presolved: 84 rows, 318 columns, 820 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 5.100e+02 Factor NZ : 1.616e+03 Factor Ops : 3.526e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 4.09571734e+02 -3.32789581e+03 2.07e+03 1.11e-16 2.83e+01 0s 1 2.31568345e+02 -1.50605867e+03 2.35e+02 6.66e-16 4.81e+00 0s 2 1.79902642e+02 -2.16179690e+02 1.80e+01 7.77e-16 6.92e-01 0s 3 1.55652574e+02 2.30773114e+00 6.49e-01 5.27e-16 2.40e-01 0s 4 1.41255730e+02 9.74397691e+01 1.06e-01 3.47e-16 6.81e-02 0s 5 1.37513882e+02 1.34609991e+02 1.26e-02 4.06e-16 4.52e-03 0s 6 1.37003113e+02 1.36988563e+02 6.63e-05 2.22e-16 2.26e-05 0s 7 1.37000000e+02 1.37000000e+02 8.86e-11 3.46e-16 2.85e-11 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 1.37000000e+02 Root relaxation: objective 1.370000e+02, 184 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 137.0000000 137.00000 0.0% - 0s Explored 0 nodes (184 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.370000000000e+02, best bound 1.370000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 137 Solution: 13 x [19] 14 x [14] 4 x [9, 14] 8 x [4] 11 x [2] 1 x [2, 15] 4 x [2, 13, 13] 9 x [1] 4 x [1, 15] 1 x [1, 11] 1 x [1, 11, 11] 7 x [17] 7 x [15, 17] 3 x [8, 12, 15] 11 x [18] 3 x [6, 18] 3 x [3, 18] 9 x [10] 3 x [10, 15] 5 x [7, 10] 15 x [5, 16] 1 x [5, 5]