Build (method = -2) #dp: 630 Step-3' Graph: 33 vertices and 240 arcs (0.00s) Step-4' Graph: 32 vertices and 238 arcs (0.00s) #V4/#V3 = 0.97 #A4/#A3 = 0.99 Ready! (0.00s) Optimize a model with 52 rows, 239 columns and 669 nonzeros Presolve removed 10 rows and 10 columns Presolve time: 0.00s Presolved: 42 rows, 229 columns, 641 nonzeros Variable types: 0 continuous, 229 integer (0 binary) Found heuristic solution: objective 472.0000000 Found heuristic solution: objective 374.0000000 Optimize a model with 42 rows, 229 columns and 641 nonzeros Presolved: 42 rows, 229 columns, 641 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 3.330e+02 Factor NZ : 7.530e+02 Factor Ops : 1.658e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.12766492e+03 -6.67651260e+03 5.24e+03 2.22e-16 8.66e+01 0s 1 6.82048085e+02 -3.02869463e+03 6.09e+02 4.44e-16 1.43e+01 0s 2 4.07852451e+02 -4.24923533e+02 6.64e+00 8.66e-15 1.80e+00 0s 3 3.10641161e+02 -1.25876828e+02 4.95e-02 4.33e-15 9.29e-01 0s 4 2.38342119e+02 1.02790842e+02 1.61e-02 6.66e-16 2.88e-01 0s 5 2.15632746e+02 1.45162530e+02 8.00e-03 2.22e-16 1.50e-01 0s 6 2.03011779e+02 1.62749981e+02 2.74e-03 4.44e-16 8.57e-02 0s 7 1.94627686e+02 1.82320399e+02 3.50e-04 1.25e-16 2.62e-02 0s 8 1.92240353e+02 1.89373203e+02 5.09e-05 2.22e-16 6.10e-03 0s 9 1.91640217e+02 1.91262404e+02 2.60e-06 2.22e-16 8.04e-04 0s 10 1.91600049e+02 1.91599642e+02 2.13e-13 3.17e-16 8.67e-07 0s 11 1.91600000e+02 1.91600000e+02 7.39e-13 1.88e-16 8.69e-13 0s Barrier solved model in 11 iterations and 0.00 seconds Optimal objective 1.91600000e+02 Root relaxation: objective 1.916000e+02, 83 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 191.60000 0 9 374.00000 191.60000 48.8% - 0s H 0 0 192.0000000 191.60000 0.21% - 0s Explored 0 nodes (105 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.920000000000e+02, best bound 1.920000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 192 Solution: 25 x [5, 6] 2 x [1, 6] 7 x [6, 11, 11] 1 x [1, 20] 15 x [4, 13] 17 x [1, 9, 16] 5 x [1, 3, 9] 4 x [2, 13] 1 x [2, 11, 13] 4 x [14, 18] 5 x [10, 11, 14] 8 x [13, 14, 19] 6 x [3, 13, 14] 1 x [14, 17, 19] 5 x [14, 17, 17] 30 x [12, 18] 22 x [7, 15] 3 x [7, 10] 15 x [8, 8] 12 x [3, 10, 16, 17] 1 x [3, 16, 19] 3 x [3, 3, 16, 19, 19]