Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:09:21 2012 Optimize a model with 441 rows, 426 columns and 1526 nonzeros Presolve removed 0 rows and 23 columns Presolve time: 0.00s Presolved: 441 rows, 403 columns, 1503 nonzeros Variable types: 0 continuous, 403 integer (402 binary) Found heuristic solution: objective 76.0000000 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 0 174 76.00000 0.00000 100% - 0s H 0 0 70.0000000 0.00000 100% - 0s H 0 0 68.0000000 0.00000 100% - 0s H 0 0 65.0000000 0.00000 100% - 0s 0 0 0.26943 0 176 65.00000 0.26943 100% - 0s H 0 0 60.0000000 0.26943 100% - 0s 0 0 0.76412 0 178 60.00000 0.76412 98.7% - 0s H 0 0 56.0000000 0.76412 98.6% - 0s H 0 0 53.0000000 0.76412 98.6% - 0s 0 0 0.76412 0 178 53.00000 0.76412 98.6% - 0s H 0 0 48.0000000 0.76412 98.4% - 0s H 0 0 43.0000000 0.76412 98.2% - 0s H 0 0 41.0000000 0.76412 98.1% - 0s 0 2 0.76463 0 178 41.00000 0.76463 98.1% - 0s H 27 25 11.0000000 0.91146 91.7% 36.3 0s * 48 25 17 10.0000000 1.00000 90.0% 38.4 0s Cutting planes: Gomory: 4 Zero half: 1 Explored 392 nodes (12286 simplex iterations) in 0.49 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+01, best bound 1.000000000000e+01, gap 0.0%