Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:10:13 2012 Optimize a model with 433 rows, 423 columns and 1503 nonzeros Presolve removed 0 rows and 23 columns Presolve time: 0.00s Presolved: 433 rows, 400 columns, 1480 nonzeros Variable types: 0 continuous, 400 integer (399 binary) Found heuristic solution: objective 77.0000000 Root relaxation: objective 0.000000e+00, 279 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 0 181 77.00000 0.00000 100% - 0s H 0 0 50.0000000 0.00000 100% - 0s H 0 0 46.0000000 0.00000 100% - 0s 0 0 0.43094 0 182 46.00000 0.43094 99.1% - 0s H 0 0 40.0000000 0.43094 98.9% - 0s H 0 0 25.0000000 0.43094 98.3% - 0s 0 0 1.00000 0 181 25.00000 1.00000 96.0% - 0s 0 0 1.12929 0 183 25.00000 1.12929 95.5% - 0s H 0 0 14.0000000 1.12929 91.9% - 0s 0 0 1.21268 0 185 14.00000 1.21268 91.3% - 0s 0 0 1.21403 0 188 14.00000 1.21403 91.3% - 0s 0 0 1.21403 0 188 14.00000 1.21403 91.3% - 0s 0 2 1.22000 0 188 14.00000 1.22000 91.3% - 0s H 135 51 11.0000000 3.77749 65.7% 17.9 0s H 162 39 10.0000000 4.07309 59.3% 20.1 0s * 238 25 11 9.0000000 6.00000 33.3% 21.5 0s Cutting planes: Gomory: 4 Zero half: 4 Explored 284 nodes (7408 simplex iterations) in 0.49 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%