Build (method = -2) #dp: 281 Step-3' Graph: 76 vertices and 221 arcs (0.00s) Step-4' Graph: 26 vertices and 121 arcs (0.00s) #V4/#V3 = 0.34 #A4/#A3 = 0.55 Ready! (0.00s) Optimize a model with 46 rows, 122 columns and 318 nonzeros Presolve removed 12 rows and 18 columns Presolve time: 0.00s Presolved: 34 rows, 104 columns, 267 nonzeros Variable types: 0 continuous, 104 integer (13 binary) Found heuristic solution: objective 147.0000000 Optimize a model with 34 rows, 104 columns and 267 nonzeros Presolved: 34 rows, 104 columns, 267 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.460e+02 Factor NZ : 4.170e+02 Factor Ops : 6.025e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 9.09116957e+02 -1.42470080e+03 2.16e+03 1.09e-01 4.22e+01 0s 1 2.80020138e+02 -4.87516099e+02 1.80e+02 5.55e-16 5.58e+00 0s 2 1.54446263e+02 -5.41826339e+01 1.27e+01 4.44e-16 1.03e+00 0s 3 1.14145256e+02 4.22906811e+01 2.83e-01 2.22e-16 3.31e-01 0s 4 9.65521700e+01 8.16229694e+01 4.10e-02 1.94e-16 6.85e-02 0s 5 9.37450398e+01 8.94834738e+01 9.42e-03 2.22e-16 1.96e-02 0s 6 9.29880917e+01 9.21408879e+01 2.73e-03 3.35e-16 3.89e-03 0s 7 9.27950519e+01 9.26098969e+01 5.43e-04 3.33e-16 8.50e-04 0s 8 9.27501594e+01 9.27497300e+01 4.26e-14 1.93e-16 1.97e-06 0s 9 9.27500000e+01 9.27500000e+01 4.26e-14 2.22e-16 2.73e-12 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 9.27500000e+01 Root relaxation: objective 9.275000e+01, 28 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 92.75000 0 10 147.00000 92.75000 36.9% - 0s H 0 0 93.0000000 92.75000 0.27% - 0s Explored 0 nodes (42 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 9.300000000000e+01, best bound 9.300000000000e+01, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.01 seconds Objective: 93 Solution: 3 x [1, 17] 10 x [1, 19] 3 x [2, 16] 6 x [3, 15] 11 x [3, 16] 9 x [4, 14] 1 x [4, 15] 2 x [5, 12] 13 x [5, 13] 18 x [6, 11] 1 x [7, 11] 1 x [8, 10] 6 x [8, 17, 18] 1 x [8, 17, 19] 1 x [8, 19] 4 x [9, 17, 19] 2 x [12, 13, 17] 1 x [16, 18, 19, 20]