Gurobi 5.0.1 (linux64) logging started Sat Nov 17 00:43:07 2012 Optimize a model with 49532 rows, 43890 columns and 191442 nonzeros Presolve removed 438 rows and 3764 columns Presolve time: 1.24s Presolved: 49094 rows, 40126 columns, 186165 nonzeros Variable types: 0 continuous, 40126 integer (40126 binary) Found heuristic solution: objective 209.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 336 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 (336 simplex iterations) in 1.39 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%