Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:20:52 2012 Optimize a model with 34027 rows, 35532 columns and 136674 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.84s Presolved: 34213 rows, 35530 columns, 171656 nonzeros Variable types: 0 continuous, 35530 integer (35530 binary) Found heuristic solution: objective 188.0000000 Root relaxation: objective 2.000000e+00, 23976 iterations, 1.87 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 276 188.00000 2.00000 98.9% - 5s H 0 0 185.0000000 2.00000 98.9% - 5s H 0 0 4.0000000 2.00000 50.0% - 5s 0 0 2.14286 0 867 4.00000 2.14286 46.4% - 13s H 0 0 3.0000000 2.14286 28.6% - 13s Cutting planes: Gomory: 1 Zero half: 5 Explored 0 nodes (88373 simplex iterations) in 13.44 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%