Build (method = -2) #dp: 1113 Step-3' Graph: 111 vertices and 450 arcs (0.00s) Step-4' Graph: 103 vertices and 434 arcs (0.00s) #V4/#V3 = 0.93 #A4/#A3 = 0.96 Ready! (0.00s) Optimize a model with 123 rows, 435 columns and 1133 nonzeros Presolve removed 33 rows and 53 columns Presolve time: 0.01s Presolved: 90 rows, 382 columns, 1056 nonzeros Variable types: 0 continuous, 382 integer (20 binary) Found heuristic solution: objective 1565.0000000 Optimize a model with 90 rows, 382 columns and 1056 nonzeros Presolved: 90 rows, 382 columns, 1056 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 6.600e+02 Factor NZ : 1.936e+03 Factor Ops : 5.342e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.11869058e+04 -2.71533424e+04 2.98e+04 1.97e-01 3.15e+02 0s 1 3.99332371e+03 -1.23127556e+04 5.54e+03 6.66e-16 6.25e+01 0s 2 1.80036573e+03 -3.09316224e+03 3.34e+02 2.22e-15 8.11e+00 0s 3 1.44621776e+03 3.82567581e+01 5.36e+01 1.33e-15 1.97e+00 0s 4 1.12720854e+03 7.21519449e+02 3.55e+00 4.44e-16 5.31e-01 0s 5 1.05976873e+03 9.30674881e+02 1.09e+00 3.09e-16 1.68e-01 0s 6 1.03634074e+03 9.96282789e+02 2.77e-01 3.05e-16 5.20e-02 0s 7 1.02958811e+03 1.01120501e+03 6.61e-02 2.22e-16 2.38e-02 0s 8 1.02697260e+03 1.02628682e+03 1.39e-03 2.71e-16 8.87e-04 0s 9 1.02683804e+03 1.02680852e+03 3.42e-05 2.77e-16 3.81e-05 0s 10 1.02683334e+03 1.02683331e+03 4.89e-12 3.33e-16 3.81e-08 0s 11 1.02683333e+03 1.02683333e+03 1.22e-11 2.74e-16 3.81e-11 0s Barrier solved model in 11 iterations and 0.01 seconds Optimal objective 1.02683333e+03 Root relaxation: objective 1.026833e+03, 107 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 1026.83333 0 11 1565.00000 1026.83333 34.4% - 0s H 0 0 1028.0000000 1026.83333 0.11% - 0s H 0 0 1027.0000000 1026.83333 0.02% - 0s Explored 0 nodes (156 simplex iterations) in 0.02 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.027000000000e+03, best bound 1.027000000000e+03, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.02 seconds Total run time: 0.04 seconds Objective: 1027 Solution: 30 x [17] 81 x [5, 5, 17] 35 x [2] 30 x [2, 4, 20] 110 x [10] 2 x [10, 19] 1 x [10, 20] 47 x [7, 12] 132 x [11, 12] 59 x [9, 16] 83 x [7, 16] 1 x [11, 16] 136 x [9, 15] 122 x [3, 18] 15 x [3, 14] 44 x [6, 6] 49 x [1, 1] 1 x [7, 18] 39 x [18, 18] 5 x [7, 8, 8] 1 x [8, 11, 13] 4 x [8, 11, 11]