Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:57:30 2013 Optimize a model with 44352 rows, 43692 columns and 174372 nonzeros Presolve removed 66 rows and 0 columns Presolve time: 0.19s Presolved: 44286 rows, 43692 columns, 174306 nonzeros Variable types: 43626 continuous, 66 integer (66 binary) Root relaxation: objective 6.012254e+04, 6683 iterations, 4.23 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 60122.5398 0 52 - 60122.5398 - - 4s H 0 0 99038.000000 60122.5398 39.3% - 8s 0 0 80589.2436 0 10 99038.0000 80589.2436 18.6% - 13s H 0 0 94414.048762 80589.2436 14.6% - 13s H 0 0 88342.000000 80589.2436 8.78% - 14s 0 0 84042.8213 0 5 88342.0000 84042.8213 4.87% - 15s H 0 0 87708.000000 84042.8213 4.18% - 15s H 0 0 84280.000000 84042.8213 0.28% - 15s 0 0 84096.3619 0 4 84280.0000 84096.3619 0.22% - 15s 0 0 84114.7666 0 3 84280.0000 84114.7666 0.20% - 15s H 0 0 84158.000000 84114.7666 0.05% - 16s 0 0 84114.7666 0 45 84158.0000 84114.7666 0.05% - 20s 0 0 84114.7666 0 6 84158.0000 84114.7666 0.05% - 26s 0 0 84114.7666 0 4 84158.0000 84114.7666 0.05% - 26s 0 0 84125.1929 0 3 84158.0000 84125.1929 0.04% - 26s 0 0 84128.7273 0 1 84158.0000 84128.7273 0.03% - 27s 0 0 84128.7273 0 1 84158.0000 84128.7273 0.03% - 27s 0 2 84130.9615 0 1 84158.0000 84130.9615 0.03% - 27s Cutting planes: Gomory: 3 Implied bound: 48 Explored 2 nodes (24138 simplex iterations) in 27.67 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.415800000000e+04, best bound 8.415400000000e+04, gap 0.0048%