Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:07:45 2012 Optimize a model with 54 rows, 90 columns and 216 nonzeros Presolve removed 22 rows and 36 columns Presolve time: 0.00s Presolved: 32 rows, 54 columns, 135 nonzeros Variable types: 0 continuous, 54 integer (54 binary) Found heuristic solution: objective 3.0000000 Root relaxation: cutoff, 28 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 (28 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%