Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:03:33 2012 Optimize a model with 411 rows, 405 columns and 1430 nonzeros Presolve removed 0 rows and 30 columns Presolve time: 0.00s Presolved: 411 rows, 375 columns, 1400 nonzeros Variable types: 0 continuous, 375 integer (374 binary) Found heuristic solution: objective 76.0000000 Root relaxation: objective 0.000000e+00, 243 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 0 167 76.00000 0.00000 100% - 0s H 0 0 56.0000000 0.00000 100% - 0s H 0 0 54.0000000 0.00000 100% - 0s 0 0 0.40000 0 169 54.00000 0.40000 99.3% - 0s H 0 0 46.0000000 0.40000 99.1% - 0s 0 0 0.84657 0 175 46.00000 0.84657 98.2% - 0s H 0 0 39.0000000 0.84657 97.8% - 0s 0 0 0.84661 0 174 39.00000 0.84661 97.8% - 0s H 0 0 20.0000000 0.84661 95.8% - 0s 0 0 0.84661 0 174 20.00000 0.84661 95.8% - 0s 0 2 0.84702 0 174 20.00000 0.84702 95.8% - 0s * 75 66 56 11.0000000 1.00000 90.9% 24.8 0s * 79 30 59 10.0000000 1.00000 90.0% 23.9 0s H 308 80 9.0000000 1.39005 84.6% 29.5 0s Cutting planes: Gomory: 4 Zero half: 3 Explored 663 nodes (20132 simplex iterations) in 0.80 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%