Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:14:00 2012 Optimize a model with 447 rows, 433 columns and 1548 nonzeros Presolve removed 0 rows and 25 columns Presolve time: 0.00s Presolved: 447 rows, 408 columns, 1523 nonzeros Variable types: 0 continuous, 408 integer (407 binary) Found heuristic solution: objective 88.0000000 Root relaxation: objective 0.000000e+00, 280 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 0 175 88.00000 0.00000 100% - 0s H 0 0 54.0000000 0.00000 100% - 0s H 0 0 51.0000000 0.00000 100% - 0s 0 0 0.38365 0 176 51.00000 0.38365 99.2% - 0s H 0 0 41.0000000 0.38365 99.1% - 0s 0 0 1.00000 0 177 41.00000 1.00000 97.6% - 0s H 0 0 31.0000000 1.00000 96.8% - 0s 0 0 1.00000 0 179 31.00000 1.00000 96.8% - 0s 0 0 1.00000 0 175 31.00000 1.00000 96.8% - 0s H 0 0 30.0000000 1.00000 96.7% - 0s 0 2 1.00000 0 175 30.00000 1.00000 96.7% - 0s H 54 35 16.0000000 3.08562 80.7% 27.0 0s H 81 40 14.0000000 3.10945 77.8% 25.2 0s * 108 43 14 13.0000000 3.19298 75.4% 24.5 0s Cutting planes: Gomory: 4 Explored 625 nodes (17975 simplex iterations) in 0.79 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.300000000000e+01, best bound 1.300000000000e+01, gap 0.0%