Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:56:53 2012 Optimize a model with 22490 rows, 23562 columns and 90268 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.45s Presolved: 22641 rows, 23560 columns, 113383 nonzeros Variable types: 0 continuous, 23560 integer (23560 binary) Found heuristic solution: objective 153.0000000 Root relaxation: objective 2.000000e+00, 13864 iterations, 0.78 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 234 153.00000 2.00000 98.7% - 2s H 0 0 101.0000000 2.00000 98.0% - 2s H 0 0 4.0000000 2.00000 50.0% - 2s 0 0 2.15385 0 303 4.00000 2.15385 46.2% - 6s H 0 0 3.0000000 2.15385 28.2% - 6s Cutting planes: Gomory: 1 Zero half: 7 Explored 0 nodes (54935 simplex iterations) in 6.53 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%