Gurobi 5.0.1 (linux64) logging started Fri Nov 16 23:54:26 2012 Optimize a model with 43655 rows, 41820 columns and 171766 nonzeros Presolve removed 26 rows and 4898 columns Presolve time: 1.00s Presolved: 43629 rows, 36922 columns, 166442 nonzeros Variable types: 0 continuous, 36922 integer (36922 binary) Found heuristic solution: objective 204.0000000 Root relaxation: objective 2.000000e+00, 25150 iterations, 1.90 seconds Total elapsed time = 5.65s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 334 204.00000 2.00000 99.0% - 6s H 0 0 197.0000000 2.00000 99.0% - 6s H 0 0 4.0000000 2.00000 50.0% - 6s H 0 0 3.0000000 2.00000 33.3% - 6s Cutting planes: Gomory: 1 Explored 0 nodes (84765 simplex iterations) in 6.94 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%