Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:37:55 2012 Optimize a model with 35519 rows, 37056 columns and 142654 nonzeros Presolve removed 1184 rows and 5762 columns Presolve time: 0.96s Presolved: 34335 rows, 31294 columns, 133656 nonzeros Variable types: 0 continuous, 31294 integer (31294 binary) Found heuristic solution: objective 192.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 278 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 (278 simplex iterations) in 1.07 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%