Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:36:08 2013 Optimize a model with 52704 rows, 51984 columns and 207504 nonzeros Presolve removed 72 rows and 0 columns Presolve time: 0.24s Presolved: 52632 rows, 51984 columns, 207432 nonzeros Variable types: 51912 continuous, 72 integer (72 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 7895 6.1287705e+04 3.567374e+00 0.000000e+00 5s 7908 6.1287726e+04 0.000000e+00 0.000000e+00 5s Root relaxation: objective 6.128773e+04, 7908 iterations, 5.14 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 61287.7258 0 60 - 61287.7258 - - 5s H 0 0 105531.00000 61287.7258 41.9% - 10s 0 0 78765.4169 0 16 105531.000 78765.4169 25.4% - 20s H 0 0 102802.17983 78765.4169 23.4% - 20s H 0 0 91133.000000 78765.4169 13.6% - 20s 0 0 81937.0475 0 4 91133.0000 81937.0475 10.1% - 22s H 0 0 89564.150534 81937.0475 8.52% - 22s H 0 0 88486.000000 81937.0475 7.40% - 22s 0 0 81982.2607 0 4 88486.0000 81982.2607 7.35% - 22s H 0 0 86990.730891 81982.2607 5.76% - 22s H 0 0 86045.000000 81982.2607 4.72% - 22s 0 2 81996.1754 0 4 86045.0000 81996.1754 4.71% - 23s H 1 1 85275.597523 81996.1754 3.85% 0.0 24s H 2 2 83602.294118 82152.5632 1.73% 352 24s 6 8 82255.4513 6 1 83602.2941 82152.5632 1.73% 228 25s H 8 8 83390.652174 82152.5632 1.48% 182 25s H 10 8 82668.322581 82152.5632 0.62% 157 25s * 24 6 24 82590.000000 82152.5632 0.53% 138 27s H 27 4 82297.000000 82200.3725 0.12% 142 27s Cutting planes: Gomory: 1 Implied bound: 68 Explored 43 nodes (22448 simplex iterations) in 28.47 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.229700000000e+04, best bound 8.228920981818e+04, gap 0.0095%