Build (method = -2) #dp: 161 Step-3' Graph: 19 vertices and 75 arcs (0.00s) Step-4' Graph: 11 vertices and 59 arcs (0.00s) #V4/#V3 = 0.58 #A4/#A3 = 0.79 Ready! (0.00s) Optimize a model with 30 rows, 60 columns and 165 nonzeros Presolve removed 11 rows and 12 columns Presolve time: 0.00s Presolved: 19 rows, 48 columns, 132 nonzeros Variable types: 0 continuous, 48 integer (0 binary) Found heuristic solution: objective 1997.0000000 Found heuristic solution: objective 1517.0000000 Optimize a model with 19 rows, 48 columns and 132 nonzeros Presolved: 19 rows, 48 columns, 132 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 5.800e+01 Factor NZ : 1.900e+02 Factor Ops : 2.470e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 4.54421878e+03 -5.67217758e+03 3.05e+03 1.11e-16 2.38e+02 0s 1 1.82504864e+03 -1.39449479e+03 8.20e+01 4.44e-16 3.30e+01 0s 2 1.39082849e+03 2.31317964e+02 6.60e+00 4.44e-16 1.10e+01 0s 3 1.13844662e+03 9.57562392e+02 2.30e-02 2.22e-16 1.71e+00 0s 4 1.05166334e+03 1.04017307e+03 7.81e-04 2.56e-16 1.08e-01 0s 5 1.04851479e+03 1.04848663e+03 2.19e-06 2.22e-16 2.66e-04 0s 6 1.04850000e+03 1.04850000e+03 5.68e-12 3.33e-16 2.71e-10 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 1.04850000e+03 Root relaxation: objective 1.048500e+03, 19 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 1048.50000 0 2 1517.00000 1048.50000 30.9% - 0s H 0 0 1049.0000000 1048.50000 0.05% - 0s Explored 0 nodes (20 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.049000000000e+03, best bound 1.049000000000e+03, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 1049 Solution: 21 x [7] 77 x [12, 14] 70 x [6, 19] 17 x [4] 1 x [4, 14] 1 x [4, 6] 10 x [1, 6] 136 x [1, 8] 59 x [16] 25 x [10, 16] 127 x [10, 18] 30 x [10, 13] 121 x [2, 17] 37 x [15, 17] 1 x [11] 175 x [9, 11] 4 x [5, 11] 18 x [2, 11] 83 x [3, 5] 36 x [5, 5]