Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:10:16 2012 Optimize a model with 453 rows, 433 columns and 1563 nonzeros Presolve removed 0 rows and 14 columns Presolve time: 0.00s Presolved: 453 rows, 419 columns, 1549 nonzeros Variable types: 0 continuous, 419 integer (418 binary) Found heuristic solution: objective 86.0000000 Root relaxation: objective 0.000000e+00, 235 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 0 192 86.00000 0.00000 100% - 0s H 0 0 76.0000000 0.00000 100% - 0s H 0 0 61.0000000 0.00000 100% - 0s H 0 0 57.0000000 0.00000 100% - 0s 0 0 0.47432 0 193 57.00000 0.47432 99.2% - 0s H 0 0 56.0000000 0.47432 99.2% - 0s 0 0 1.05975 0 197 56.00000 1.05975 98.1% - 0s H 0 0 47.0000000 1.05975 97.7% - 0s H 0 0 42.0000000 1.05975 97.5% - 0s 0 0 1.06078 0 198 42.00000 1.06078 97.5% - 0s 0 0 1.06078 0 198 42.00000 1.06078 97.5% - 0s H 0 0 36.0000000 1.06078 97.1% - 0s H 0 0 27.0000000 1.06078 96.1% - 0s H 0 0 26.0000000 1.06078 95.9% - 0s 0 2 1.06342 0 198 26.00000 1.06342 95.9% - 0s H 54 50 14.0000000 1.08840 92.2% 51.1 0s * 57 40 34 13.0000000 1.08840 91.6% 51.0 0s * 125 59 25 11.0000000 1.10168 90.0% 37.8 0s Cutting planes: Gomory: 6 Zero half: 1 Explored 1021 nodes (41909 simplex iterations) in 2.08 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.100000000000e+01, best bound 1.100000000000e+01, gap 0.0%