Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:14:08 2012 Optimize a model with 23073 rows, 27722 columns and 96112 nonzeros Presolve removed 29 rows and 4484 columns Presolve time: 0.51s Presolved: 23044 rows, 23238 columns, 91352 nonzeros Variable types: 0 continuous, 23238 integer (23238 binary) Found heuristic solution: objective 166.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 295 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 232 3.00000 2.00000 33.3% - 0s Explored 0 nodes (551 simplex iterations) in 0.63 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%