Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:23:56 2012 Optimize a model with 34208 rows, 35910 columns and 137590 nonzeros Presolve removed 21 rows and 3593 columns Presolve time: 0.76s Presolved: 34187 rows, 32317 columns, 133637 nonzeros Variable types: 0 continuous, 32317 integer (32317 binary) Found heuristic solution: objective 189.0000000 Root relaxation: objective 2.000000e+00, 22275 iterations, 1.48 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 292 189.00000 2.00000 98.9% - 4s H 0 0 179.0000000 2.00000 98.9% - 4s H 0 0 4.0000000 2.00000 50.0% - 4s H 0 0 3.0000000 2.00000 33.3% - 5s Cutting planes: Gomory: 1 Explored 0 nodes (75089 simplex iterations) in 5.13 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 2.000000000000e+00, gap 33.3333%