Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:20:57 2013 Optimize a model with 30910 rows, 30360 columns and 121110 nonzeros Presolve removed 55 rows and 0 columns Presolve time: 0.13s Presolved: 30855 rows, 30360 columns, 121055 nonzeros Variable types: 30305 continuous, 55 integer (55 binary) Root relaxation: objective 4.442285e+04, 3188 iterations, 1.27 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 44422.8453 0 43 - 44422.8453 - - 1s H 0 0 62285.000000 44422.8453 28.7% - 2s 0 0 51614.5482 0 13 62285.0000 51614.5482 17.1% - 4s H 0 0 60373.000000 51614.5482 14.5% - 4s 0 0 53269.9635 0 2 60373.0000 53269.9635 11.8% - 5s H 0 0 54072.826729 53269.9635 1.48% - 5s H 0 0 53711.000000 53269.9635 0.82% - 5s H 0 0 53567.000000 53269.9635 0.55% - 5s 0 2 53277.2402 0 2 53567.0000 53277.2402 0.54% - 5s * 7 4 6 53533.000000 53495.6154 0.07% 123 6s Cutting planes: Implied bound: 50 Explored 11 nodes (7568 simplex iterations) in 6.44 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.353300000000e+04, best bound 5.353300000000e+04, gap 0.0%