Gurobi 5.0.1 (linux64) logging started Sat Nov 17 00:13:15 2012 Optimize a model with 49233 rows, 42642 columns and 189312 nonzeros Presolve removed 15 rows and 2680 columns Presolve time: 1.16s Presolved: 49218 rows, 39962 columns, 186156 nonzeros Variable types: 0 continuous, 39962 integer (39962 binary) Found heuristic solution: objective 206.0000000 Root relaxation: objective 2.000000e+00, 29211 iterations, 2.29 seconds Total elapsed time = 6.57s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 358 206.00000 2.00000 99.0% - 7s H 0 0 196.0000000 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 0 0 infeasible 0 3.00000 2.00000 33.3% - 7s Cutting planes: Gomory: 3 Clique: 4 Zero half: 33 Explored 0 nodes (94331 simplex iterations) in 7.96 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%