Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:04:46 2012 Optimize a model with 32015 rows, 34040 columns and 129166 nonzeros Presolve removed 26 rows and 4418 columns Presolve time: 0.70s Presolved: 31989 rows, 29622 columns, 124402 nonzeros Variable types: 0 continuous, 29622 integer (29622 binary) Found heuristic solution: objective 184.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 356 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 274 3.00000 2.00000 33.3% - 0s 0 0 infeasible 0 3.00000 2.00000 33.3% - 0s Explored 0 nodes (692 simplex iterations) in 0.88 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%