Gurobi 5.0.1 (linux64) logging started Fri Nov 16 23:34:27 2012 Optimize a model with 42611 rows, 40602 columns and 167431 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.98s Presolved: 42810 rows, 40600 columns, 207408 nonzeros Variable types: 0 continuous, 40600 integer (40600 binary) Found heuristic solution: objective 201.0000000 Root relaxation: objective 2.000000e+00, 27672 iterations, 2.34 seconds Total elapsed time = 6.17s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 344 201.00000 2.00000 99.0% - 7s H 0 0 192.0000000 2.00000 99.0% - 7s H 0 0 4.0000000 2.00000 50.0% - 7s H 0 0 3.0000000 2.00000 33.3% - 7s Cutting planes: Gomory: 1 Explored 0 nodes (88120 simplex iterations) in 7.38 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%