Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:11:17 2012 Optimize a model with 487 rows, 451 columns and 1666 nonzeros Presolve removed 0 rows and 20 columns Presolve time: 0.00s Presolved: 487 rows, 431 columns, 1646 nonzeros Variable types: 0 continuous, 431 integer (430 binary) Found heuristic solution: objective 90.0000000 Root relaxation: objective 0.000000e+00, 249 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 0 175 90.00000 0.00000 100% - 0s H 0 0 63.0000000 0.00000 100% - 0s 0 0 0.33940 0 176 63.00000 0.33940 99.5% - 0s H 0 0 53.0000000 0.33940 99.4% - 0s 0 0 1.00000 0 177 53.00000 1.00000 98.1% - 0s H 0 0 46.0000000 1.00000 97.8% - 0s 0 0 1.08480 0 178 46.00000 1.08480 97.6% - 0s H 0 0 40.0000000 1.08480 97.3% - 0s 0 0 1.23121 0 184 40.00000 1.23121 96.9% - 0s 0 0 1.23127 0 182 40.00000 1.23127 96.9% - 0s 0 0 1.23127 0 182 40.00000 1.23127 96.9% - 0s 0 2 1.23238 0 182 40.00000 1.23238 96.9% - 0s H 27 27 14.0000000 2.70116 80.7% 39.3 0s Cutting planes: Gomory: 4 Zero half: 2 Explored 338 nodes (10173 simplex iterations) in 0.61 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.400000000000e+01, best bound 1.400000000000e+01, gap 0.0%