Build (method = -2) #dp: 174 Step-3' Graph: 47 vertices and 134 arcs (0.00s) Step-4' Graph: 19 vertices and 78 arcs (0.00s) #V4/#V3 = 0.40 #A4/#A3 = 0.58 Ready! (0.00s) Optimize a model with 38 rows, 79 columns and 203 nonzeros Presolve removed 12 rows and 14 columns Presolve time: 0.00s Presolved: 26 rows, 65 columns, 165 nonzeros Variable types: 0 continuous, 65 integer (0 binary) Found heuristic solution: objective 1508.0000000 Found heuristic solution: objective 1298.0000000 Optimize a model with 26 rows, 65 columns and 165 nonzeros Presolved: 26 rows, 65 columns, 165 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 9.100e+01 Factor NZ : 2.670e+02 Factor Ops : 3.345e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 6.49587727e+03 -1.01177985e+04 1.35e+04 1.11e-16 4.27e+02 0s 1 2.40879821e+03 -3.13216161e+03 1.43e+03 3.66e-15 6.34e+01 0s 2 1.38860081e+03 2.40634305e+02 5.39e+00 1.22e-14 8.30e+00 0s 3 1.06534217e+03 8.56876802e+02 1.02e-01 1.78e-15 1.50e+00 0s 4 9.88215951e+02 9.44723643e+02 1.32e-02 2.53e-15 3.13e-01 0s 5 9.80592629e+02 9.75297616e+02 2.89e-03 2.36e-15 3.81e-02 0s 6 9.79503437e+02 9.79494768e+02 1.26e-06 1.83e-15 6.24e-05 0s 7 9.79500000e+02 9.79500000e+02 1.02e-12 1.67e-15 6.31e-11 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 9.79500000e+02 Root relaxation: objective 9.795000e+02, 23 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 979.50000 0 6 1298.00000 979.50000 24.5% - 0s H 0 0 980.0000000 979.50000 0.05% - 0s Explored 0 nodes (28 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 9.800000000000e+02, best bound 9.800000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 980 Solution: 69 x [1] 68 x [2, 17] 22 x [2, 19] 84 x [3, 16] 8 x [3, 19] 169 x [4, 15] 2 x [5, 15] 159 x [5, 18] 2 x [5, 19] 12 x [6, 19] 64 x [7, 11] 63 x [8, 13] 1 x [9] 23 x [9, 11] 124 x [9, 12] 32 x [9, 17, 19] 15 x [10, 17, 19] 36 x [11, 17, 19] 27 x [12, 14, 19]