Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:11:30 2012 Optimize a model with 2200 rows, 1640 columns and 8080 nonzeros Presolve removed 81 rows and 40 columns Presolve time: 0.04s Presolved: 2119 rows, 1600 columns, 7840 nonzeros Variable types: 0 continuous, 1600 integer (1600 binary) Found heuristic solution: objective 25.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: cutoff, 1985 iterations, 0.05 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 (1985 simplex iterations) in 0.09 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%