Gurobi 5.0.1 (linux64) logging started Mon Feb 4 18:53:51 2013 Optimize a model with 16261 rows, 2116 columns and 49726 nonzeros Presolve removed 4369 rows and 1151 columns Presolve time: 0.11s Presolved: 11892 rows, 965 columns, 36318 nonzeros Variable types: 15 continuous, 950 integer (950 binary) Found heuristic solution: objective 45688.000000 Root relaxation: objective 3.530250e+04, 3462 iterations, 0.15 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 35302.5000 0 4 45688.0000 35302.5000 22.7% - 0s H 0 0 35309.000000 35302.5000 0.02% - 0s H 0 0 35307.000000 35302.5000 0.01% - 0s 0 0 35305.2015 0 5 35307.0000 35305.2015 0.01% - 0s Cutting planes: Gomory: 3 Implied bound: 2 MIR: 4 Explored 0 nodes (3500 simplex iterations) in 0.35 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.530700000000e+04, best bound 3.530600000000e+04, gap 0.0028%