Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:13:24 2012 Optimize a model with 3242 rows, 2256 columns and 11748 nonzeros Presolve removed 378 rows and 2 columns Presolve time: 0.10s Presolved: 2911 rows, 2254 columns, 12942 nonzeros Variable types: 0 continuous, 2254 integer (2254 binary) Found heuristic solution: objective 47.0000000 Root relaxation: objective 3.000000e+00, 2190 iterations, 0.09 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 16 47.00000 3.00000 93.6% - 0s H 0 0 44.0000000 3.00000 93.2% - 0s H 0 0 4.0000000 3.00000 25.0% - 0s H 0 0 3.0000000 3.00000 0.0% - 0s Explored 0 nodes (7512 simplex iterations) in 0.48 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%