Gurobi 5.0.1 (linux64) logging started Sat Nov 17 00:54:55 2012 Optimize a model with 52079 rows, 44310 columns and 199498 nonzeros Presolve removed 444 rows and 4622 columns Presolve time: 1.30s Presolved: 51635 rows, 39688 columns, 193336 nonzeros Variable types: 0 continuous, 39688 integer (39688 binary) Found heuristic solution: objective 210.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 363 iterations, 0.03 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% - 1s Explored 0 nodes (363 simplex iterations) in 1.45 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%