Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:20:44 2012 Optimize a model with 34779 rows, 35532 columns and 138930 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.81s Presolved: 34965 rows, 35530 columns, 173904 nonzeros Variable types: 0 continuous, 35530 integer (35530 binary) Found heuristic solution: objective 188.0000000 Root relaxation: objective 2.000000e+00, 21602 iterations, 1.39 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 312 188.00000 2.00000 98.9% - 4s H 0 0 172.0000000 2.00000 98.8% - 4s H 0 0 4.0000000 2.00000 50.0% - 4s H 0 0 3.0000000 2.00000 33.3% - 4s 0 0 infeasible 0 3.00000 2.00000 33.3% - 4s Cutting planes: Gomory: 1 Clique: 4 Zero half: 20 Explored 0 nodes (70001 simplex iterations) in 5.00 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%