Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:04:31 2012 Optimize a model with 421 rows, 411 columns and 1461 nonzeros Presolve removed 0 rows and 17 columns Presolve time: 0.00s Presolved: 421 rows, 394 columns, 1444 nonzeros Variable types: 0 continuous, 394 integer (393 binary) Found heuristic solution: objective 85.0000000 Root relaxation: objective 0.000000e+00, 266 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 0 172 85.00000 0.00000 100% - 0s H 0 0 59.0000000 0.00000 100% - 0s H 0 0 57.0000000 0.00000 100% - 0s H 0 0 53.0000000 0.00000 100% - 0s 0 0 0.27013 0 174 53.00000 0.27013 99.5% - 0s H 0 0 48.0000000 0.27013 99.4% - 0s 0 0 0.85571 0 177 48.00000 0.85571 98.2% - 0s H 0 0 38.0000000 0.85571 97.7% - 0s H 0 0 34.0000000 0.85571 97.5% - 0s 0 2 0.85576 0 177 34.00000 0.85576 97.5% - 0s H 27 21 11.0000000 1.00000 90.9% 28.0 0s Cutting planes: Gomory: 3 Mod-K: 1 Explored 588 nodes (19046 simplex iterations) in 0.70 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.100000000000e+01, best bound 1.100000000000e+01, gap 0.0%