Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:13:52 2012 Optimize a model with 23405 rows, 27722 columns and 97108 nonzeros Presolve removed 367 rows and 5480 columns Presolve time: 0.53s Presolved: 23038 rows, 22242 columns, 90522 nonzeros Variable types: 0 continuous, 22242 integer (22242 binary) Found heuristic solution: objective 166.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: infeasible, 218 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% - 0s Explored 0 nodes (218 simplex iterations) in 0.60 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%