Gurobi 5.0.1 (linux64) logging started Sat Nov 17 10:13:02 2012 Optimize a model with 74479 rows, 60270 columns and 282483 nonzeros Presolve removed 1494 rows and 5880 columns (presolve time = 5s) ... Presolve removed 1496 rows and 5882 columns Presolve time: 6.60s Presolved: 72983 rows, 54388 columns, 272332 nonzeros Variable types: 0 continuous, 54388 integer (54388 binary) Found heuristic solution: objective 245.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 375 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% - 6s Explored 0 nodes (375 simplex iterations) in 6.83 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%