Build (method = -2) #dp: 390 Step-3' Graph: 28 vertices and 173 arcs (0.00s) Step-4' Graph: 28 vertices and 173 arcs (0.00s) #V4/#V3 = 1.00 #A4/#A3 = 1.00 Ready! (0.00s) Optimize a model with 48 rows, 174 columns and 479 nonzeros Presolve removed 14 rows and 18 columns Presolve time: 0.00s Presolved: 34 rows, 156 columns, 426 nonzeros Variable types: 0 continuous, 156 integer (0 binary) Found heuristic solution: objective 328.0000000 Found heuristic solution: objective 287.0000000 Optimize a model with 34 rows, 156 columns and 426 nonzeros Presolved: 34 rows, 156 columns, 426 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.210e+02 Factor NZ : 5.250e+02 Factor Ops : 1.018e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.13987885e+03 -2.79866937e+03 3.30e+03 2.22e-16 4.54e+01 0s 1 4.87375260e+02 -1.14260176e+03 5.47e+02 5.00e-16 9.27e+00 0s 2 2.83435500e+02 -9.51886750e+01 8.81e+00 3.33e-16 1.21e+00 0s 3 2.03400020e+02 1.17392874e+02 6.23e-03 2.49e-16 2.66e-01 0s 4 1.82218249e+02 1.63093121e+02 1.59e-03 2.57e-16 5.92e-02 0s 5 1.75708741e+02 1.70630983e+02 3.87e-04 3.33e-16 1.57e-02 0s 6 1.74690279e+02 1.73077705e+02 7.27e-05 2.22e-16 4.99e-03 0s 7 1.74263566e+02 1.74015655e+02 1.13e-05 2.77e-16 7.68e-04 0s 8 1.74166776e+02 1.74166337e+02 6.89e-13 2.28e-16 1.36e-06 0s 9 1.74166667e+02 1.74166667e+02 8.53e-13 3.14e-16 1.37e-12 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 1.74166667e+02 Root relaxation: objective 1.741667e+02, 73 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 174.16667 0 7 287.00000 174.16667 39.3% - 0s H 0 0 175.0000000 174.16667 0.48% - 0s Explored 0 nodes (96 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.750000000000e+02, best bound 1.750000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 175 Solution: 15 x [3] 5 x [14, 17] 11 x [2, 10] 5 x [5, 19] 4 x [17, 17, 19] 21 x [6, 15] 10 x [6, 17, 17] 5 x [7, 12] 2 x [7, 16] 20 x [5, 7] 5 x [8, 11] 11 x [11, 12] 11 x [11, 13, 18] 1 x [11, 15] 1 x [2, 11] 1 x [2, 11, 17] 15 x [4, 9] 13 x [1, 4] 13 x [9, 20] 2 x [9, 9] 1 x [12] 3 x [5, 5, 5, 13]