Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:13:59 2012 Optimize a model with 463 rows, 441 columns and 1596 nonzeros Presolve removed 0 rows and 11 columns Presolve time: 0.00s Presolved: 463 rows, 430 columns, 1585 nonzeros Variable types: 0 continuous, 430 integer (429 binary) Found heuristic solution: objective 91.0000000 Root relaxation: objective 0.000000e+00, 221 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 0 183 91.00000 0.00000 100% - 0s H 0 0 62.0000000 0.00000 100% - 0s H 0 0 59.0000000 0.00000 100% - 0s H 0 0 57.0000000 0.00000 100% - 0s 0 0 0.27416 0 185 57.00000 0.27416 100% - 0s H 0 0 54.0000000 0.27416 99.5% - 0s H 0 0 45.0000000 0.27416 99.4% - 0s 0 0 0.72540 0 188 45.00000 0.72540 98.4% - 0s H 0 0 38.0000000 0.72540 98.1% - 0s 0 0 0.72540 0 192 38.00000 0.72540 98.1% - 0s 0 0 0.72540 0 189 38.00000 0.72540 98.1% - 0s H 0 0 36.0000000 0.72540 98.0% - 0s H 0 0 32.0000000 0.72540 97.7% - 0s H 0 0 28.0000000 0.72540 97.4% - 0s 0 2 0.72557 0 188 28.00000 0.72557 97.4% - 0s H 27 27 25.0000000 1.00000 96.0% 41.6 0s * 47 37 28 14.0000000 1.00000 92.9% 31.1 0s H 67 37 12.0000000 1.00000 91.7% 30.5 0s Cutting planes: Gomory: 3 Zero half: 1 Explored 521 nodes (15176 simplex iterations) in 0.63 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.200000000000e+01, best bound 1.200000000000e+01, gap 0.0%