Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:37:48 2012 Optimize a model with 37439 rows, 37056 columns and 148414 nonzeros Presolve removed 21 rows and 3650 columns Presolve time: 0.90s Presolved: 37418 rows, 33406 columns, 144376 nonzeros Variable types: 0 continuous, 33406 integer (33406 binary) Found heuristic solution: objective 192.0000000 Root relaxation: objective 2.000000e+00, 24157 iterations, 1.72 seconds Total elapsed time = 5.13s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 330 192.00000 2.00000 99.0% - 5s H 0 0 136.0000000 2.00000 98.5% - 5s H 0 0 4.0000000 2.00000 50.0% - 6s H 0 0 3.0000000 2.00000 33.3% - 6s Cutting planes: Gomory: 1 Explored 0 nodes (78954 simplex iterations) in 6.16 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 2.000000000000e+00, gap 33.3333%