Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:09:47 2012 Optimize a model with 14097 rows, 17822 columns and 59449 nonzeros Presolve removed 29 rows and 3593 columns Presolve time: 0.25s Presolved: 14068 rows, 14229 columns, 55646 nonzeros Variable types: 0 continuous, 14229 integer (14229 binary) Found heuristic solution: objective 133.0000000 Root relaxation: objective 2.000000e+00, 9563 iterations, 0.41 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 172 133.00000 2.00000 98.5% - 1s H 0 0 128.0000000 2.00000 98.4% - 1s H 0 0 4.0000000 2.00000 50.0% - 1s H 0 0 3.0000000 2.00000 33.3% - 1s Explored 0 nodes (29596 simplex iterations) in 1.50 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%