Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:09:22 2012 Optimize a model with 435 rows, 423 columns and 1508 nonzeros Presolve removed 0 rows and 22 columns Presolve time: 0.00s Presolved: 435 rows, 401 columns, 1486 nonzeros Variable types: 0 continuous, 401 integer (400 binary) Found heuristic solution: objective 78.0000000 Root relaxation: objective 0.000000e+00, 268 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 0 177 78.00000 0.00000 100% - 0s H 0 0 55.0000000 0.00000 100% - 0s H 0 0 49.0000000 0.00000 100% - 0s H 0 0 43.0000000 0.00000 100% - 0s 0 0 0.40799 0 180 43.00000 0.40799 99.1% - 0s H 0 0 39.0000000 0.40799 99.0% - 0s H 0 0 37.0000000 0.40799 98.9% - 0s 0 0 0.89262 0 180 37.00000 0.89262 97.6% - 0s H 0 0 27.0000000 0.89262 96.7% - 0s 0 0 0.89296 0 182 27.00000 0.89296 96.7% - 0s 0 0 0.89296 0 182 27.00000 0.89296 96.7% - 0s H 0 0 20.0000000 0.89296 95.5% - 0s 0 2 0.89480 0 181 20.00000 0.89480 95.5% - 0s * 25 11 15 9.0000000 3.10967 65.4% 34.2 0s Cutting planes: Gomory: 3 Mod-K: 1 Explored 55 nodes (2627 simplex iterations) in 0.19 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%