Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:44:06 2012 Optimize a model with 29735 rows, 31506 columns and 119827 nonzeros Presolve removed 380 rows and 4250 columns Presolve time: 0.72s Presolved: 29355 rows, 27256 columns, 114362 nonzeros Variable types: 0 continuous, 27256 integer (27256 binary) Found heuristic solution: objective 177.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 266 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 (266 simplex iterations) in 0.82 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%