Gurobi 5.0.1 (linux64) logging started Sat Nov 17 01:18:02 2012 Optimize a model with 53423 rows, 45156 columns and 204366 nonzeros Presolve removed 21 rows and 4030 columns Presolve time: 1.16s Presolved: 53402 rows, 41126 columns, 199834 nonzeros Variable types: 0 continuous, 41126 integer (41126 binary) Found heuristic solution: objective 212.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 444 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 378 3.00000 2.00000 33.3% - 1s Explored 0 nodes (796 simplex iterations) in 1.47 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%