Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:27:43 2012 Optimize a model with 26143 rows, 29756 columns and 107326 nonzeros Presolve removed 33 rows and 5334 columns Presolve time: 0.56s Presolved: 26110 rows, 24422 columns, 101690 nonzeros Variable types: 0 continuous, 24422 integer (24422 binary) Found heuristic solution: objective 172.0000000 Root relaxation: objective 2.000000e+00, 17665 iterations, 1.10 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 256 172.00000 2.00000 98.8% - 3s H 0 0 162.0000000 2.00000 98.8% - 3s H 0 0 4.0000000 2.00000 50.0% - 3s H 0 0 3.0000000 2.00000 33.3% - 3s Cutting planes: Gomory: 1 Explored 0 nodes (55892 simplex iterations) in 3.84 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%