Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:41:08 2012 Optimize a model with 3608 rows, 7832 columns and 18304 nonzeros Presolve removed 39 rows and 3432 columns Presolve time: 0.11s Presolved: 3569 rows, 4400 columns, 14872 nonzeros Variable types: 0 continuous, 4400 integer (4400 binary) Found heuristic solution: objective 21.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 2493 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 cutoff 0 2.00000 1.00000 50.0% - 0s Explored 0 nodes (2493 simplex iterations) in 0.14 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%