Build (method = -2) #dp: 717 Step-3' Graph: 165 vertices and 488 arcs (0.01s) Step-4' Graph: 70 vertices and 298 arcs (0.01s) #V4/#V3 = 0.42 #A4/#A3 = 0.61 Ready! (0.01s) Optimize a model with 90 rows, 299 columns and 761 nonzeros Presolve removed 13 rows and 19 columns Presolve time: 0.00s Presolved: 77 rows, 280 columns, 740 nonzeros Variable types: 0 continuous, 280 integer (0 binary) Found heuristic solution: objective 907.0000000 Optimize a model with 77 rows, 280 columns and 740 nonzeros Presolved: 77 rows, 280 columns, 740 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 4.980e+02 Factor NZ : 1.404e+03 Factor Ops : 2.955e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 6.55091917e+03 -2.89594804e+04 1.77e+04 2.22e-16 2.65e+02 0s 1 2.44243022e+03 -1.17380158e+04 2.65e+03 5.55e-16 4.97e+01 0s 2 1.04526137e+03 -2.33508066e+03 2.94e+02 8.88e-16 7.65e+00 0s 3 7.15679464e+02 -2.98280511e+02 2.02e+01 4.16e-16 1.83e+00 0s 4 5.79351169e+02 1.88605295e+02 4.31e+00 4.72e-16 6.85e-01 0s 5 5.15024535e+02 3.52391515e+02 1.13e+00 4.45e-16 2.83e-01 0s 6 4.92134297e+02 4.21623146e+02 4.31e-01 5.18e-16 1.23e-01 0s 7 4.81145500e+02 4.56557048e+02 1.20e-01 4.91e-16 4.27e-02 0s 8 4.76973197e+02 4.69741435e+02 1.13e-02 4.91e-16 1.25e-02 0s 9 4.75840645e+02 4.72829294e+02 2.69e-03 3.89e-16 5.22e-03 0s 10 4.75421110e+02 4.75266353e+02 5.24e-05 4.41e-16 2.68e-04 0s 11 4.75388924e+02 4.75388762e+02 4.65e-13 3.88e-16 2.81e-07 0s 12 4.75388889e+02 4.75388889e+02 3.53e-13 5.55e-16 2.81e-10 0s Barrier solved model in 12 iterations and 0.01 seconds Optimal objective 4.75388889e+02 Root relaxation: objective 4.753889e+02, 68 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 475.38889 0 30 907.00000 475.38889 47.6% - 0s H 0 0 481.0000000 475.38889 1.17% - 0s H 0 0 478.0000000 475.38889 0.55% - 0s 0 0 475.50000 0 35 478.00000 475.50000 0.52% - 0s H 0 0 476.0000000 475.50000 0.11% - 0s Cutting planes: Gomory: 1 Zero half: 2 Explored 0 nodes (151 simplex iterations) in 0.04 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 4.760000000000e+02, best bound 4.760000000000e+02, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.04 seconds Total run time: 0.05 seconds Objective: 476 Solution: 42 x [2, 8] 82 x [4, 20] 17 x [2, 4, 18] 14 x [2, 18, 20] 1 x [2, 3, 15] 62 x [10, 15, 19] 3 x [12, 14, 15] 8 x [14, 15, 19] 28 x [5, 12, 13, 16] 1 x [5, 16, 17] 20 x [5, 7, 13, 14] 37 x [1, 5, 7, 17] 1 x [7, 9, 16] 14 x [9, 10, 13, 16] 19 x [6, 17, 18] 68 x [3, 6, 12] 14 x [3, 18, 19] 11 x [1, 10, 14, 18] 1 x [13, 14, 18] 10 x [3, 11, 13, 16] 1 x [1, 3, 11] 1 x [3, 7, 16] 21 x [1, 2, 7, 16, 17]