Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:58:18 2012 Optimize a model with 42335 rows, 38612 columns and 164638 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.97s Presolved: 42529 rows, 38610 columns, 202622 nonzeros Variable types: 0 continuous, 38610 integer (38610 binary) Found heuristic solution: objective 196.0000000 Root relaxation: objective 2.000000e+00, 24560 iterations, 2.04 seconds Total elapsed time = 5.58s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 324 196.00000 2.00000 99.0% - 6s H 0 0 141.0000000 2.00000 98.6% - 6s H 0 0 4.0000000 2.00000 50.0% - 6s 0 0 2.23529 0 691 4.00000 2.23529 44.1% - 20s H 0 0 3.0000000 2.23529 25.5% - 20s Cutting planes: Gomory: 2 Zero half: 10 Explored 0 nodes (102557 simplex iterations) in 20.61 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%