Build (method = -2) #dp: 5733 Step-3' Graph: 212 vertices and 1698 arcs (0.02s) Step-4' Graph: 155 vertices and 1584 arcs (0.02s) #V4/#V3 = 0.73 #A4/#A3 = 0.93 Ready! (0.02s) Optimize a model with 204 rows, 1585 columns and 4449 nonzeros Presolve removed 34 rows and 43 columns Presolve time: 0.04s Presolved: 170 rows, 1542 columns, 4454 nonzeros Variable types: 0 continuous, 1542 integer (1297 binary) Found heuristic solution: objective 29.0000000 Optimize a model with 170 rows, 1542 columns and 4454 nonzeros Presolved: 170 rows, 1542 columns, 4454 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.440e+03 Factor NZ : 5.710e+03 Factor Ops : 2.504e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 3.51453164e+02 -2.18587413e+03 5.04e+03 1.76e-01 8.87e+00 0s 1 2.43306769e+02 -8.88277042e+02 8.29e+02 5.55e-16 1.63e+00 0s 2 6.53446445e+01 -2.15833649e+02 7.98e+01 5.00e-16 2.00e-01 0s 3 2.77132232e+01 -1.73086911e+01 4.16e+00 3.05e-16 1.95e-02 0s 4 2.22456862e+01 6.41704059e+00 8.71e-01 2.22e-16 5.70e-03 0s 5 2.09690480e+01 1.14927570e+01 5.09e-01 2.22e-16 3.31e-03 0s 6 1.94016715e+01 1.33493508e+01 2.08e-01 2.22e-16 2.05e-03 0s 7 1.82644146e+01 1.50323626e+01 7.98e-02 2.22e-16 1.08e-03 0s 8 1.75284898e+01 1.60787092e+01 1.96e-02 2.22e-16 4.76e-04 0s 9 1.73345825e+01 1.62585883e+01 9.43e-03 2.22e-16 3.51e-04 0s 10 1.72257149e+01 1.66834485e+01 4.88e-03 2.22e-16 1.77e-04 0s 11 1.71950804e+01 1.66977865e+01 4.01e-03 2.22e-16 1.62e-04 0s 12 1.71472602e+01 1.67449963e+01 2.80e-03 4.44e-16 1.31e-04 0s 13 1.70980396e+01 1.69707367e+01 1.72e-03 2.29e-16 4.17e-05 0s 14 1.70078430e+01 1.69953184e+01 9.00e-05 2.44e-16 4.08e-06 0s 15 1.70001363e+01 1.69999957e+01 1.41e-06 2.38e-16 4.59e-08 0s 16 1.70000000e+01 1.70000000e+01 1.45e-12 2.22e-16 4.69e-14 0s Barrier solved model in 16 iterations and 0.02 seconds Optimal objective 1.70000000e+01 Root relaxation: objective 1.700000e+01, 137 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 17.0000000 17.00000 0.0% - 0s Explored 0 nodes (137 simplex iterations) in 0.07 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0% Preprocessing time: 0.03 seconds Gurobi run time: 0.07 seconds Total run time: 0.11 seconds Objective: 17 Solution: 1 x [1, 37, 49] 1 x [7, 11, 48] 1 x [6, 24, 45] 1 x [3, 31, 44] 1 x [2, 36, 43] 1 x [5, 29, 40] 1 x [9, 32, 33] 1 x [8, 27, 39] 1 x [22, 28, 30] 1 x [4, 21, 47] 1 x [14, 19, 42] 1 x [18, 25, 35] 1 x [12, 15, 46] 1 x [17, 26, 34] 1 x [13, 20, 41] 1 x [16, 20, 38] 1 x [10, 23, 41]