Gurobi 5.0.1 (linux64) logging started Sat Nov 17 09:31:07 2012 Optimize a model with 70712 rows, 59292 columns and 270214 nonzeros Presolve removed 513 rows and 6077 columns Presolve time: 2.01s Presolved: 70199 rows, 53215 columns, 262346 nonzeros Variable types: 0 continuous, 53215 integer (53215 binary) Found heuristic solution: objective 243.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 397 iterations, 0.04 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% - 2s Explored 0 nodes (397 simplex iterations) in 2.23 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%