Build (method = -2) #dp: 1394 Step-3' Graph: 179 vertices and 764 arcs (0.01s) Step-4' Graph: 147 vertices and 700 arcs (0.01s) #V4/#V3 = 0.82 #A4/#A3 = 0.92 Ready! (0.01s) Optimize a model with 166 rows, 701 columns and 1829 nonzeros Presolve removed 30 rows and 49 columns Presolve time: 0.01s Presolved: 136 rows, 652 columns, 1749 nonzeros Variable types: 0 continuous, 652 integer (0 binary) Found heuristic solution: objective 1570.0000000 Found heuristic solution: objective 1471.0000000 Found heuristic solution: objective 1323.0000000 Optimize a model with 136 rows, 652 columns and 1749 nonzeros Presolved: 136 rows, 652 columns, 1749 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.050e+03 Factor NZ : 3.556e+03 Factor Ops : 1.220e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.15588032e+04 -1.20966839e+05 1.05e+05 2.22e-16 6.09e+02 0s 1 4.33703907e+03 -5.44583399e+04 1.91e+04 6.66e-16 1.22e+02 0s 2 2.19299199e+03 -1.44918337e+04 2.10e+03 7.77e-16 1.87e+01 0s 3 1.82390089e+03 -3.98247004e+03 8.19e+00 3.44e-15 4.42e+00 0s 4 1.45993882e+03 -1.92409861e+03 3.12e+00 1.78e-15 2.57e+00 0s 5 1.12288396e+03 -1.05002683e+03 1.69e+00 1.44e-15 1.65e+00 0s 6 9.30189687e+02 -1.71542931e+02 9.99e-01 7.77e-16 8.37e-01 0s 7 7.43240635e+02 2.04217467e+02 2.74e-01 6.00e-16 4.09e-01 0s 8 7.27511836e+02 4.83397655e+02 1.86e-01 5.77e-16 1.85e-01 0s 9 6.80596826e+02 5.83789079e+02 4.41e-02 3.95e-16 7.35e-02 0s 10 6.69706040e+02 6.21096852e+02 2.43e-02 5.06e-16 3.69e-02 0s 11 6.64186861e+02 6.33059134e+02 1.34e-02 5.85e-16 2.36e-02 0s 12 6.60700871e+02 6.42636352e+02 6.99e-03 5.59e-16 1.37e-02 0s 13 6.58210648e+02 6.50582894e+02 3.86e-03 6.36e-16 5.79e-03 0s 14 6.57073914e+02 6.52222934e+02 2.37e-03 5.49e-16 3.68e-03 0s 15 6.55356654e+02 6.53298340e+02 5.72e-04 4.66e-16 1.56e-03 0s 16 6.54717493e+02 6.54548607e+02 2.05e-05 6.41e-16 1.28e-04 0s 17 6.54656750e+02 6.54655534e+02 4.91e-08 5.58e-16 9.24e-07 0s 18 6.54656250e+02 6.54656250e+02 8.22e-11 4.58e-16 1.89e-11 0s Barrier solved model in 18 iterations and 0.01 seconds Optimal objective 6.54656250e+02 Root relaxation: objective 6.546562e+02, 125 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 654.65625 0 25 1323.00000 654.65625 50.5% - 0s H 0 0 656.0000000 654.65625 0.20% - 0s H 0 0 655.0000000 654.65625 0.05% - 0s Explored 0 nodes (233 simplex iterations) in 0.04 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 6.550000000000e+02, best bound 6.550000000000e+02, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.04 seconds Total run time: 0.06 seconds Objective: 655 Solution: 17 x [6, 14] 2 x [6, 8, 15] 25 x [8, 10, 10] 37 x [9, 17] 20 x [17, 19] 107 x [1, 7, 15] 19 x [1, 9, 11] 17 x [1, 5, 13] 10 x [1, 10, 10, 11, 15] 1 x [4, 10, 12] 146 x [2, 3] 43 x [2, 4, 16] 48 x [18, 19, 19] 48 x [4, 6, 9, 10] 14 x [4, 4, 9, 11] 29 x [6, 6, 13, 16] 64 x [11, 11, 13, 13, 16] 1 x [4, 6, 6, 6] 6 x [6, 6, 6, 11, 16] 1 x [10, 10, 10, 11, 11, 11]