Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:29:50 2012 Optimize a model with 7952 rows, 5112 columns and 28684 nonzeros Presolve removed 569 rows and 71 columns Presolve time: 0.13s Presolved: 7383 rows, 5041 columns, 27264 nonzeros Variable types: 0 continuous, 5041 integer (5041 binary) Found heuristic solution: objective 39.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: cutoff, 7147 iterations, 0.40 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 cutoff 0 3.00000 2.00000 33.3% - 0s Explored 0 nodes (7147 simplex iterations) in 0.55 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%