Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:11:43 2012 Optimize a model with 2700 rows, 1406 columns and 9322 nonzeros Presolve removed 483 rows and 2 columns Presolve time: 0.09s Presolved: 2217 rows, 1404 columns, 8055 nonzeros Variable types: 0 continuous, 1404 integer (1404 binary) Found heuristic solution: objective 37.0000000 Root relaxation: objective 3.000000e+00, 1592 iterations, 0.08 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 18 37.00000 3.00000 91.9% - 0s H 0 0 3.0000000 3.00000 0.0% - 0s Explored 0 nodes (6498 simplex iterations) in 0.49 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%