Gurobi 5.0.1 (linux64) logging started Sat Nov 17 00:00:30 2012 Optimize a model with 41003 rows, 41820 columns and 163810 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.92s Presolved: 41205 rows, 41818 columns, 205024 nonzeros Variable types: 0 continuous, 41818 integer (41818 binary) Found heuristic solution: objective 204.0000000 Root relaxation: objective 2.000000e+00, 25919 iterations, 1.97 seconds Total elapsed time = 5.44s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 328 204.00000 2.00000 99.0% - 6s H 0 0 189.0000000 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 (84188 simplex iterations) in 6.61 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%