Gurobi 5.0.1 (linux64) logging started Fri Nov 16 23:32:11 2012 Optimize a model with 38792 rows, 40602 columns and 155974 nonzeros Presolve removed 422 rows and 3620 columns Presolve time: 0.96s Presolved: 38370 rows, 36982 columns, 150969 nonzeros Variable types: 0 continuous, 36982 integer (36982 binary) Found heuristic solution: objective 201.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 313 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 (313 simplex iterations) in 1.08 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%