Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:16:15 2012 Optimize a model with 23546 rows, 28056 columns and 97860 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.48s Presolved: 23711 rows, 28054 columns, 125467 nonzeros Variable types: 0 continuous, 28054 integer (28054 binary) Found heuristic solution: objective 167.0000000 Root relaxation: objective 2.000000e+00, 17092 iterations, 1.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 244 167.00000 2.00000 98.8% - 3s H 0 0 152.0000000 2.00000 98.7% - 3s H 0 0 4.0000000 2.00000 50.0% - 3s H 0 0 3.0000000 2.00000 33.3% - 3s 0 0 infeasible 0 3.00000 2.00000 33.3% - 3s Cutting planes: Gomory: 1 Zero half: 12 Explored 0 nodes (52918 simplex iterations) in 3.36 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%