Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:23:44 2012 Optimize a model with 4859 rows, 756 columns and 15199 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.07s Presolved: 4884 rows, 754 columns, 20798 nonzeros Variable types: 0 continuous, 754 integer (754 binary) Found heuristic solution: objective 27.0000000 Root relaxation: objective 3.578947e+00, 4606 iterations, 0.27 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.57895 0 693 27.00000 3.57895 86.7% - 0s H 0 0 22.0000000 3.57895 83.7% - 0s 0 0 5.00000 0 117 22.00000 5.00000 77.3% - 0s H 0 0 18.0000000 5.00000 72.2% - 0s 0 0 5.00000 0 130 18.00000 5.00000 72.2% - 0s H 0 0 11.0000000 5.00000 54.5% - 0s 0 0 5.05134 0 671 11.00000 5.05134 54.1% - 1s H 0 0 10.0000000 5.05134 49.5% - 1s 0 0 5.07845 0 695 10.00000 5.07845 49.2% - 1s H 0 0 9.0000000 5.07845 43.6% - 1s 0 0 5.11174 0 662 9.00000 5.11174 43.2% - 1s H 0 0 8.0000000 5.11174 36.1% - 1s H 0 0 7.0000000 5.11174 27.0% - 1s 0 0 5.14823 0 600 7.00000 5.14823 26.5% - 1s H 0 0 6.0000000 5.14823 14.2% - 1s Cutting planes: Gomory: 19 Clique: 3 Zero half: 12 Explored 0 nodes (8962 simplex iterations) in 1.96 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%