Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:04:20 2012 Optimize a model with 20799 rows, 25760 columns and 87358 nonzeros Presolve removed 32 rows and 4802 columns Presolve time: 0.45s Presolved: 20767 rows, 20958 columns, 82298 nonzeros Variable types: 0 continuous, 20958 integer (20958 binary) Found heuristic solution: objective 160.0000000 Root relaxation: objective 2.000000e+00, 13995 iterations, 0.65 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 182 160.00000 2.00000 98.8% - 2s H 0 0 107.0000000 2.00000 98.1% - 2s H 0 0 3.0000000 2.00000 33.3% - 2s Cutting planes: Gomory: 1 Explored 0 nodes (44768 simplex iterations) in 2.40 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%