Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:20:33 2012 Optimize a model with 22476 rows, 28730 columns and 95314 nonzeros Presolve removed 42 rows and 6762 columns Presolve time: 0.49s Presolved: 22434 rows, 21968 columns, 88288 nonzeros Variable types: 0 continuous, 21968 integer (21968 binary) Found heuristic solution: objective 169.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 301 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 220 3.00000 2.00000 33.3% - 0s 0 0 infeasible 0 3.00000 2.00000 33.3% - 0s Explored 0 nodes (502 simplex iterations) in 0.61 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%