Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:38:36 2012 Optimize a model with 1656 rows, 4830 columns and 9522 nonzeros Presolve removed 34 rows and 2346 columns Presolve time: 0.04s Presolved: 1622 rows, 2484 columns, 7176 nonzeros Variable types: 0 continuous, 2484 integer (2484 binary) Found heuristic solution: objective 12.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 1434 iterations, 0.01 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 (1434 simplex iterations) in 0.06 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%