Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:49:34 2012 Optimize a model with 27744 rows, 32220 columns and 114558 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.66s Presolved: 27921 rows, 32218 columns, 146289 nonzeros Variable types: 0 continuous, 32218 integer (32218 binary) Found heuristic solution: objective 179.0000000 Root relaxation: objective 2.000000e+00, 17575 iterations, 1.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 256 179.00000 2.00000 98.9% - 3s H 0 0 140.0000000 2.00000 98.6% - 3s H 0 0 4.0000000 2.00000 50.0% - 3s H 0 0 3.0000000 2.00000 33.3% - 3s Cutting planes: Gomory: 1 Explored 0 nodes (57398 simplex iterations) in 4.05 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%