Gurobi 5.0.1 (linux64) logging started Sat Nov 17 01:43:56 2012 Optimize a model with 51599 rows, 46440 columns and 200163 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 1.21s Presolved: 51812 rows, 46438 columns, 245908 nonzeros Variable types: 0 continuous, 46438 integer (46438 binary) Found heuristic solution: objective 215.0000000 Root relaxation: objective 2.000000e+00, 30834 iterations, 2.52 seconds Total elapsed time = 7.07s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 378 215.00000 2.00000 99.1% - 8s H 0 0 206.0000000 2.00000 99.0% - 8s H 0 0 4.0000000 2.00000 50.0% - 8s H 0 0 3.0000000 2.00000 33.3% - 8s 0 0 infeasible 0 3.00000 2.00000 33.3% - 8s Cutting planes: Gomory: 2 Clique: 4 Zero half: 36 Explored 0 nodes (101312 simplex iterations) in 8.67 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%