Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:09:45 2012 Optimize a model with 63 rows, 90 columns and 243 nonzeros Presolve removed 20 rows and 18 columns Presolve time: 0.00s Presolved: 43 rows, 72 columns, 180 nonzeros Variable types: 0 continuous, 72 integer (72 binary) Found heuristic solution: objective 4.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: cutoff, 38 iterations, 0.00 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 (38 simplex iterations) in 0.00 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%