Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:23:45 2012 Optimize a model with 7504 rows, 4556 columns and 26800 nonzeros Presolve removed 607 rows and 268 columns Presolve time: 0.14s Presolved: 6897 rows, 4288 columns, 25058 nonzeros Variable types: 0 continuous, 4288 integer (4288 binary) Found heuristic solution: objective 39.0000000 Root relaxation: objective 3.000000e+00, 6913 iterations, 0.64 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 3.0000000 3.00000 0.0% - 1s Explored 0 nodes (9942 simplex iterations) in 1.09 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%