Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:23 2012 Optimize a model with 745 rows, 55 columns and 1490 nonzeros Presolve removed 523 rows and 0 columns Presolve time: 0.02s Presolved: 222 rows, 55 columns, 1325 nonzeros Variable types: 0 continuous, 55 integer (55 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 9.715483e+00, 119 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 9.71548 0 47 6.00000 9.71548 61.9% - 0s 0 0 9.34790 0 46 6.00000 9.34790 55.8% - 0s 0 0 9.28159 0 49 6.00000 9.28159 54.7% - 0s H 0 0 7.0000000 9.28159 32.6% - 0s 0 0 9.25247 0 50 7.00000 9.25247 32.2% - 0s 0 0 9.21480 0 49 7.00000 9.21480 31.6% - 0s 0 0 9.20360 0 49 7.00000 9.20360 31.5% - 0s 0 0 9.20284 0 51 7.00000 9.20284 31.5% - 0s 0 0 9.19837 0 50 7.00000 9.19837 31.4% - 0s 0 0 9.19784 0 50 7.00000 9.19784 31.4% - 0s 0 0 9.18528 0 49 7.00000 9.18528 31.2% - 0s 0 0 9.16889 0 48 7.00000 9.16889 31.0% - 0s 0 0 9.16473 0 49 7.00000 9.16473 30.9% - 0s 0 0 9.15990 0 49 7.00000 9.15990 30.9% - 0s 0 0 9.15855 0 49 7.00000 9.15855 30.8% - 0s 0 0 9.15807 0 49 7.00000 9.15807 30.8% - 0s 0 2 9.15523 0 49 7.00000 9.15523 30.8% - 0s Cutting planes: Clique: 34 Zero half: 7 Explored 23 nodes (944 simplex iterations) in 0.16 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%