Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:07:17 2012 Optimize a model with 32559 rows, 34410 columns and 131163 nonzeros Presolve removed 399 rows and 4997 columns Presolve time: 0.81s Presolved: 32160 rows, 29413 columns, 124895 nonzeros Variable types: 0 continuous, 29413 integer (29413 binary) Found heuristic solution: objective 185.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 270 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 (270 simplex iterations) in 0.90 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%