Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:59:28 2012 Optimize a model with 19994 rows, 24180 columns and 83388 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.38s Presolved: 20147 rows, 24178 columns, 107155 nonzeros Variable types: 0 continuous, 24178 integer (24178 binary) Found heuristic solution: objective 155.0000000 Root relaxation: objective 2.000000e+00, 13433 iterations, 0.64 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 200 155.00000 2.00000 98.7% - 2s H 0 0 123.0000000 2.00000 98.4% - 2s H 0 0 4.0000000 2.00000 50.0% - 2s 0 0 2.22222 0 3300 4.00000 2.22222 44.4% - 4s H 0 0 3.0000000 2.22222 25.9% - 5s Cutting planes: Zero half: 5 Explored 0 nodes (48490 simplex iterations) in 5.36 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%