Gurobi 5.0.1 (linux64) logging started Wed Apr 24 06:46:00 2013 Optimize a model with 85744 rows, 84824 columns and 338744 nonzeros Presolve removed 92 rows and 0 columns Presolve time: 0.41s Presolved: 85652 rows, 84824 columns, 338652 nonzeros Variable types: 84732 continuous, 92 integer (92 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 8671 8.3469903e+04 2.652066e+05 0.000000e+00 5s 10331 8.5095768e+04 6.427556e+03 0.000000e+00 10s 11825 8.5677511e+04 5.229525e+04 0.000000e+00 15s 12338 8.5711120e+04 0.000000e+00 0.000000e+00 17s Root relaxation: objective 8.571112e+04, 12338 iterations, 16.60 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 85711.1202 0 71 - 85711.1202 - - 17s H 0 0 178146.00000 85711.1202 51.9% - 25s 0 0 126600.270 0 13 178146.000 126600.270 28.9% - 51s H 0 0 156584.18048 126600.270 19.1% - 51s H 0 0 143276.00000 126600.270 11.6% - 53s 0 0 136732.865 0 9 143276.000 136732.865 4.57% - 58s 0 0 137363.075 0 5 143276.000 137363.075 4.13% - 59s H 0 0 143233.00000 137363.075 4.10% - 59s 0 0 137663.313 0 5 143233.000 137663.313 3.89% - 61s H 0 0 137974.00000 137663.313 0.23% - 61s 0 0 137664.114 0 4 137974.000 137664.114 0.22% - 63s 0 2 137666.354 0 4 137974.000 137666.354 0.22% - 64s 1 3 137727.916 1 3 137974.000 137727.916 0.18% 231 65s H 5 4 137960.00000 137792.504 0.12% 338 66s H 6 5 137933.83186 137792.504 0.10% 314 66s H 7 5 137887.00000 137792.504 0.07% 277 66s * 8 5 6 137859.00000 137792.504 0.05% 272 66s Cutting planes: Implied bound: 86 Explored 13 nodes (34729 simplex iterations) in 67.14 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.378590000000e+05, best bound 1.378489198367e+05, gap 0.0073%