Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:58:44 2012 Optimize a model with 377 rows, 382 columns and 1322 nonzeros Presolve removed 0 rows and 33 columns Presolve time: 0.01s Presolved: 377 rows, 349 columns, 1289 nonzeros Variable types: 0 continuous, 349 integer (348 binary) Found heuristic solution: objective 60.0000000 Root relaxation: objective 0.000000e+00, 202 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 152 60.00000 0.00000 100% - 0s H 0 0 48.0000000 0.00000 100% - 0s H 0 0 47.0000000 0.00000 100% - 0s H 0 0 43.0000000 0.00000 100% - 0s 0 0 0.21793 0 154 43.00000 0.21793 99.5% - 0s H 0 0 37.0000000 0.21793 99.4% - 0s H 0 0 28.0000000 0.21793 99.2% - 0s 0 0 0.86366 0 157 28.00000 0.86366 96.9% - 0s H 0 0 19.0000000 0.86366 95.5% - 0s 0 0 0.86432 0 159 19.00000 0.86432 95.5% - 0s 0 0 0.86432 0 159 19.00000 0.86432 95.5% - 0s 0 2 0.86802 0 159 19.00000 0.86802 95.4% - 0s H 27 27 16.0000000 1.00000 93.8% 26.7 0s * 53 41 36 13.0000000 1.00000 92.3% 18.8 0s H 63 40 12.0000000 1.00000 91.7% 20.6 0s H 137 63 10.0000000 1.00000 90.0% 18.5 0s * 301 86 16 9.0000000 1.06054 88.2% 25.6 0s * 436 87 10 8.0000000 2.52632 68.4% 28.7 0s Cutting planes: Gomory: 4 Zero half: 2 Explored 681 nodes (19719 simplex iterations) in 0.68 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%