Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:14:26 2012 Optimize a model with 34407 rows, 35156 columns and 137443 nonzeros Presolve removed 401 rows and 4677 columns Presolve time: 0.78s Presolved: 34006 rows, 30479 columns, 131469 nonzeros Variable types: 0 continuous, 30479 integer (30479 binary) Found heuristic solution: objective 187.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 298 iterations, 0.02 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 (298 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%