Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:20:31 2012 Optimize a model with 25518 rows, 28730 columns and 104440 nonzeros Presolve removed 1042 rows and 4396 columns Presolve time: 0.60s Presolved: 24476 rows, 24334 columns, 97221 nonzeros Variable types: 0 continuous, 24334 integer (24334 binary) Found heuristic solution: objective 169.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 252 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 infeasible 0 3.00000 2.00000 33.3% - 0s Explored 0 nodes (252 simplex iterations) in 0.68 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%