Gurobi 5.0.1 (linux64) logging started Mon Feb 4 18:53:26 2013 Optimize a model with 14234 rows, 1936 columns and 43560 nonzeros Presolve removed 3330 rows and 1037 columns Presolve time: 0.10s Presolved: 10904 rows, 899 columns, 33326 nonzeros Variable types: 15 continuous, 884 integer (884 binary) Found heuristic solution: objective 42637.000000 Root relaxation: objective 3.350727e+04, 3178 iterations, 0.13 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 33507.2727 0 2 42637.0000 33507.2727 21.4% - 0s H 0 0 33514.000000 33507.2727 0.02% - 0s H 0 0 33508.000000 33507.2727 0.00% - 0s Explored 0 nodes (3181 simplex iterations) in 0.26 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.350800000000e+04, best bound 3.350800000000e+04, gap 0.0%