Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:14:45 2012 Optimize a model with 517 rows, 485 columns and 1775 nonzeros Presolve removed 0 rows and 24 columns Presolve time: 0.00s Presolved: 517 rows, 461 columns, 1751 nonzeros Variable types: 0 continuous, 461 integer (460 binary) Found heuristic solution: objective 100.0000000 Root relaxation: objective 0.000000e+00, 282 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 0 199 100.00000 0.00000 100% - 0s H 0 0 76.0000000 0.00000 100% - 0s H 0 0 74.0000000 0.00000 100% - 0s H 0 0 69.0000000 0.00000 100% - 0s 0 0 0.43216 0 200 69.00000 0.43216 99.4% - 0s H 0 0 68.0000000 0.43216 99.4% - 0s 0 0 1.00000 0 204 68.00000 1.00000 98.5% - 0s H 0 0 55.0000000 1.00000 98.2% - 0s H 0 0 38.0000000 1.00000 97.4% - 0s 0 0 1.00000 0 202 38.00000 1.00000 97.4% - 0s H 0 0 37.0000000 1.00000 97.3% - 0s 0 0 1.00000 0 205 37.00000 1.00000 97.3% - 0s 0 0 1.00000 0 201 37.00000 1.00000 97.3% - 0s H 0 0 35.0000000 1.00000 97.1% - 0s 0 2 1.00000 0 201 35.00000 1.00000 97.1% - 0s * 46 46 25 20.0000000 1.43361 92.8% 43.8 0s * 122 101 51 19.0000000 1.44608 92.4% 31.7 0s * 133 53 59 18.0000000 1.44608 92.0% 30.2 0s H 550 161 16.0000000 7.75000 51.6% 28.2 0s * 629 133 9 15.0000000 7.95364 47.0% 29.7 0s Cutting planes: Gomory: 3 Zero half: 3 Explored 1074 nodes (33820 simplex iterations) in 1.48 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%