Gurobi 5.0.1 (linux64) logging started Fri Nov 16 04:27:49 2012 Optimize a model with 8006 rows, 2652 columns and 26416 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.15s Presolved: 8004 rows, 2650 columns, 26102 nonzeros Variable types: 0 continuous, 2650 integer (2650 binary) Found heuristic solution: objective 51.0000000 Root relaxation: objective 2.000000e+00, 2013 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 102 51.00000 2.00000 96.1% - 0s H 0 0 49.0000000 2.00000 95.9% - 0s H 0 0 5.0000000 2.00000 60.0% - 0s 0 0 3.00000 0 472 5.00000 3.00000 40.0% - 1s 0 0 3.01031 0 1898 5.00000 3.01031 39.8% - 1s 0 0 3.01031 0 1896 5.00000 3.01031 39.8% - 2s 0 0 3.01031 0 1897 5.00000 3.01031 39.8% - 3s 0 0 3.01031 0 1598 5.00000 3.01031 39.8% - 5s H 0 0 4.0000000 3.01031 24.7% - 6s Cutting planes: Clique: 16 Zero half: 1 Explored 0 nodes (26892 simplex iterations) in 6.90 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%