Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:54:52 2012 Optimize a model with 397 rows, 386 columns and 1376 nonzeros Presolve removed 0 rows and 20 columns Presolve time: 0.00s Presolved: 397 rows, 366 columns, 1356 nonzeros Variable types: 0 continuous, 366 integer (365 binary) Found heuristic solution: objective 81.0000000 Root relaxation: objective 0.000000e+00, 230 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 165 81.00000 0.00000 100% - 0s H 0 0 61.0000000 0.00000 100% - 0s H 0 0 58.0000000 0.00000 100% - 0s H 0 0 49.0000000 0.00000 100% - 0s 0 0 0.37827 0 170 49.00000 0.37827 99.2% - 0s H 0 0 43.0000000 0.37827 99.1% - 0s 0 0 1.01463 0 171 43.00000 1.01463 97.6% - 0s H 0 0 36.0000000 1.01463 97.2% - 0s 0 0 1.01495 0 173 36.00000 1.01495 97.2% - 0s 0 0 1.01495 0 172 36.00000 1.01495 97.2% - 0s H 0 0 33.0000000 1.01495 96.9% - 0s H 0 0 31.0000000 1.01495 96.7% - 0s H 0 0 27.0000000 1.01495 96.2% - 0s 0 2 1.01981 0 172 27.00000 1.01981 96.2% - 0s * 26 25 15 10.0000000 2.38529 76.1% 48.7 0s * 28 20 15 9.0000000 2.38529 73.5% 51.2 0s * 80 11 8 8.0000000 4.93934 38.3% 43.5 0s Cutting planes: Gomory: 4 Zero half: 8 Explored 104 nodes (4971 simplex iterations) in 0.27 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%