Gurobi 5.0.1 (linux64) logging started Sat Nov 17 08:08:35 2012 Optimize a model with 65925 rows, 56882 columns and 253468 nonzeros Presolve removed 20 rows and 4286 columns Presolve time: 1.66s Presolved: 65905 rows, 52596 columns, 248630 nonzeros Variable types: 0 continuous, 52596 integer (52596 binary) Found heuristic solution: objective 238.0000000 Root relaxation: objective 2.000000e+00, 36989 iterations, 3.61 seconds Total elapsed time = 10.19s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 430 238.00000 2.00000 99.2% - 11s H 0 0 218.0000000 2.00000 99.1% - 11s H 0 0 4.0000000 2.00000 50.0% - 12s H 0 0 3.0000000 2.00000 33.3% - 12s 0 0 infeasible 0 3.00000 2.00000 33.3% - 12s Cutting planes: Gomory: 2 Zero half: 41 Explored 0 nodes (123809 simplex iterations) in 12.62 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%