Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:46:26 2012 Optimize a model with 40739 rows, 37830 columns and 159078 nonzeros Presolve removed 27 rows and 4852 columns Presolve time: 0.86s Presolved: 40712 rows, 32978 columns, 153808 nonzeros Variable types: 0 continuous, 32978 integer (32978 binary) Found heuristic solution: objective 194.0000000 Root relaxation: objective 2.000000e+00, 24545 iterations, 1.98 seconds Total elapsed time = 5.21s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 320 194.00000 2.00000 99.0% - 6s H 0 0 174.0000000 2.00000 98.9% - 6s H 0 0 4.0000000 2.00000 50.0% - 6s H 0 0 3.0000000 2.00000 33.3% - 6s 0 0 infeasible 0 3.00000 2.00000 33.3% - 6s Cutting planes: Gomory: 2 Clique: 2 Zero half: 28 Explored 0 nodes (78807 simplex iterations) in 6.29 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%