Gurobi 5.0.1 (linux64) logging started Wed Apr 24 08:55:36 2013 Optimize a model with 97118 rows, 96138 columns and 384258 nonzeros Presolve removed 4092 rows and 0 columns Presolve time: 0.71s Presolved: 93026 rows, 96138 columns, 376074 nonzeros Variable types: 96040 continuous, 98 integer (98 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 19460 1.3722316e+05 2.026547e+03 0.000000e+00 5s 20348 1.3745792e+05 0.000000e+00 0.000000e+00 6s Root relaxation: objective 1.374579e+05, 20348 iterations, 5.52 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 137457.917 0 4 - 137457.917 - - 6s H 0 0 143292.00000 137457.917 4.07% - 7s H 0 0 140043.00000 137457.917 1.85% - 7s 0 0 137459.864 0 5 140043.000 137459.864 1.84% - 8s 0 0 137460.418 0 5 140043.000 137460.418 1.84% - 8s H 0 0 138037.00000 137460.418 0.42% - 12s 0 0 137460.418 0 4 138037.000 137460.418 0.42% - 16s 0 0 137460.418 0 5 138037.000 137460.418 0.42% - 16s 0 0 137460.632 0 6 138037.000 137460.632 0.42% - 17s 0 0 137460.632 0 6 138037.000 137460.632 0.42% - 17s 0 2 137468.426 0 6 138037.000 137468.426 0.41% - 19s 3 5 137576.302 3 1 138037.000 137573.163 0.34% 98.0 20s H 7 6 137967.07241 137573.163 0.29% 53.6 20s H 8 6 137918.60000 137573.163 0.25% 58.4 20s * 9 5 9 137763.00000 137573.163 0.14% 66.8 20s * 14 2 3 137713.00000 137641.060 0.05% 61.8 20s Cutting planes: Gomory: 1 Flow cover: 7 Explored 18 nodes (29538 simplex iterations) in 20.83 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.377130000000e+05, best bound 1.377039069767e+05, gap 0.0066%