Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:45:46 2012 Optimize a model with 41687 rows, 37442 columns and 161539 nonzeros Presolve removed 388 rows and 2 columns Presolve time: 0.92s Presolved: 41492 rows, 37440 columns, 197395 nonzeros Variable types: 0 continuous, 37440 integer (37440 binary) Found heuristic solution: objective 193.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 316 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% - 1s Explored 0 nodes (316 simplex iterations) in 1.05 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%