Gurobi 5.0.1 (linux64) logging started Mon Feb 4 18:53:39 2013 Optimize a model with 15225 rows, 2025 columns and 46575 nonzeros Presolve removed 2218 rows and 1046 columns Presolve time: 0.10s Presolved: 13007 rows, 979 columns, 39818 nonzeros Variable types: 19 continuous, 960 integer (960 binary) Found heuristic solution: objective 45095.000000 Root relaxation: objective 3.492749e+04, 4321 iterations, 0.18 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 34927.4911 0 9 45095.0000 34927.4911 22.5% - 0s H 0 0 34939.000000 34927.4911 0.03% - 0s H 0 0 34936.000000 34927.4911 0.02% - 0s 0 0 34931.0074 0 32 34936.0000 34931.0074 0.01% - 0s 0 0 34931.0074 0 9 34936.0000 34931.0074 0.01% - 0s 0 0 34931.5308 0 26 34936.0000 34931.5308 0.01% - 0s H 0 0 34935.000000 34931.5308 0.01% - 0s Cutting planes: Implied bound: 1 MIR: 7 Explored 0 nodes (4655 simplex iterations) in 0.45 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.493500000000e+04, best bound 3.493200000000e+04, gap 0.0086%