Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:39:43 2012 Optimize a model with 2844 rows, 6320 columns and 14536 nonzeros Presolve removed 189 rows and 2449 columns Presolve time: 0.09s Presolved: 2655 rows, 3871 columns, 11692 nonzeros Variable types: 0 continuous, 3871 integer (3871 binary) Found heuristic solution: objective 17.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: cutoff, 3447 iterations, 0.06 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 (3447 simplex iterations) in 0.16 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%