Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:01:59 2012 Optimize a model with 405 rows, 400 columns and 1410 nonzeros Presolve removed 0 rows and 19 columns Presolve time: 0.00s Presolved: 405 rows, 381 columns, 1391 nonzeros Variable types: 0 continuous, 381 integer (380 binary) Found heuristic solution: objective 83.0000000 Root relaxation: objective 0.000000e+00, 207 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 0 159 83.00000 0.00000 100% - 0s H 0 0 53.0000000 0.00000 100% - 0s H 0 0 51.0000000 0.00000 100% - 0s 0 0 0.27259 0 161 51.00000 0.27259 99.5% - 0s H 0 0 41.0000000 0.27259 99.3% - 0s 0 0 0.79726 0 167 41.00000 0.79726 98.1% - 0s H 0 0 30.0000000 0.79726 97.3% - 0s 0 0 0.79726 0 171 30.00000 0.79726 97.3% - 0s 0 0 0.79726 0 169 30.00000 0.79726 97.3% - 0s H 0 0 25.0000000 0.79726 96.8% - 0s 0 2 0.80764 0 169 25.00000 0.80764 96.8% - 0s * 45 28 30 11.0000000 1.00000 90.9% 23.5 0s * 84 34 14 10.0000000 1.00000 90.0% 26.6 0s * 436 8 12 9.0000000 7.40000 17.8% 29.0 0s Cutting planes: Gomory: 4 Zero half: 1 Mod-K: 1 Explored 445 nodes (13667 simplex iterations) in 0.50 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%