Build (method = -2) #dp: 262 Step-3' Graph: 56 vertices and 161 arcs (0.00s) Step-4' Graph: 25 vertices and 99 arcs (0.00s) #V4/#V3 = 0.45 #A4/#A3 = 0.61 Ready! (0.00s) Optimize a model with 44 rows, 100 columns and 254 nonzeros Presolve removed 13 rows and 15 columns Presolve time: 0.00s Presolved: 31 rows, 85 columns, 214 nonzeros Variable types: 0 continuous, 85 integer (0 binary) Found heuristic solution: objective 1658.0000000 Found heuristic solution: objective 1473.0000000 Optimize a model with 31 rows, 85 columns and 214 nonzeros Presolved: 31 rows, 85 columns, 214 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.330e+02 Factor NZ : 3.360e+02 Factor Ops : 4.456e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 4.68155463e+03 -1.23366838e+04 7.54e+03 2.22e-16 3.02e+02 0s 1 2.24666179e+03 -3.68043174e+03 7.89e+02 7.77e-16 4.93e+01 0s 2 1.59474228e+03 -4.79167299e+01 5.17e+01 3.89e-15 9.66e+00 0s 3 1.30119750e+03 9.52301972e+02 1.61e+00 6.66e-16 1.96e+00 0s 4 1.22437377e+03 1.15558733e+03 2.36e-01 2.42e-15 3.85e-01 0s 5 1.20965929e+03 1.20361560e+03 3.04e-02 1.44e-15 3.39e-02 0s 6 1.20850238e+03 1.20848939e+03 5.27e-06 1.91e-15 7.26e-05 0s 7 1.20850000e+03 1.20850000e+03 6.14e-12 1.78e-15 7.30e-11 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 1.20850000e+03 Root relaxation: objective 1.208500e+03, 41 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 1208.50000 0 6 1473.00000 1208.50000 18.0% - 0s H 0 0 1209.0000000 1208.50000 0.04% - 0s Explored 0 nodes (47 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.209000000000e+03, best bound 1.209000000000e+03, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 1209 Solution: 162 x [1] 12 x [1, 17] 2 x [2] 143 x [3] 47 x [3, 16] 10 x [4] 13 x [4, 19] 41 x [5] 127 x [5, 17] 38 x [6] 110 x [6, 14] 80 x [7] 136 x [7, 13] 18 x [8, 13] 81 x [8, 15] 57 x [9, 11] 27 x [9, 12] 38 x [10, 11] 1 x [11] 7 x [11, 12] 59 x [11, 12, 18]