Build (method = -2) #dp: 431 Step-3' Graph: 54 vertices and 231 arcs (0.00s) Step-4' Graph: 42 vertices and 207 arcs (0.00s) #V4/#V3 = 0.78 #A4/#A3 = 0.90 Ready! (0.00s) Optimize a model with 60 rows, 208 columns and 556 nonzeros Presolve removed 20 rows and 49 columns Presolve time: 0.00s Presolved: 40 rows, 159 columns, 394 nonzeros Variable types: 0 continuous, 159 integer (0 binary) Found heuristic solution: objective 159.0000000 Optimize a model with 40 rows, 159 columns and 394 nonzeros Presolved: 40 rows, 159 columns, 394 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.950e+02 Factor NZ : 6.000e+02 Factor Ops : 1.070e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 4.81131773e+02 -1.65714069e+03 1.13e+03 2.22e-16 2.48e+01 0s 1 2.08536207e+02 -6.79229815e+02 8.15e+01 4.44e-16 3.73e+00 0s 2 1.59847081e+02 -1.63104627e+02 1.10e+01 4.66e-15 1.06e+00 0s 3 1.29233954e+02 1.71509604e+01 1.16e+00 1.22e-15 3.49e-01 0s 4 1.10504933e+02 8.92100549e+01 2.07e-01 2.22e-16 6.59e-02 0s 5 1.05294741e+02 1.01880570e+02 4.04e-02 2.22e-16 1.06e-02 0s 6 1.04012241e+02 1.03982336e+02 2.27e-04 3.33e-16 9.23e-05 0s 7 1.04000000e+02 1.04000000e+02 1.80e-09 4.44e-16 6.43e-10 0s 8 1.04000000e+02 1.04000000e+02 7.11e-15 2.06e-16 6.43e-13 0s Barrier solved model in 8 iterations and 0.00 seconds Optimal objective 1.04000000e+02 Root relaxation: objective 1.040000e+02, 66 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 104.0000000 104.00000 0.0% - 0s Explored 0 nodes (66 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.040000000000e+02, best bound 1.040000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 104 Solution: 9 x [18] 8 x [7, 7, 18] 17 x [8] 10 x [4] 3 x [4, 15] 1 x [10, 15] 1 x [2, 15] 5 x [9, 11] 5 x [9, 12] 8 x [1, 14] 1 x [1, 13] 6 x [1, 12] 7 x [3, 17] 8 x [6, 11, 17] 2 x [13, 17] 1 x [16, 16] 3 x [3, 12, 12] 9 x [5, 12, 13]