Gurobi 5.0.1 (linux64) logging started Fri Nov 16 23:01:10 2012 Optimize a model with 43339 rows, 39006 columns and 168039 nonzeros Presolve removed 623 rows and 5912 columns Presolve time: 1.16s Presolved: 42716 rows, 33094 columns, 160316 nonzeros Variable types: 0 continuous, 33094 integer (33094 binary) Found heuristic solution: objective 197.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 283 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% - 1s Explored 0 nodes (283 simplex iterations) in 1.28 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%