Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:10:15 2012 Optimize a model with 447 rows, 430 columns and 1545 nonzeros Presolve removed 0 rows and 20 columns Presolve time: 0.00s Presolved: 447 rows, 410 columns, 1525 nonzeros Variable types: 0 continuous, 410 integer (409 binary) Found heuristic solution: objective 74.0000000 Root relaxation: objective 0.000000e+00, 247 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 74.00000 0.00000 100% - 0s H 0 0 55.0000000 0.00000 100% - 0s 0 0 0.25560 0 177 55.00000 0.25560 100% - 0s H 0 0 38.0000000 0.25560 99.3% - 0s 0 0 0.79059 0 183 38.00000 0.79059 97.9% - 0s H 0 0 36.0000000 0.79059 97.8% - 0s H 0 0 30.0000000 0.79059 97.4% - 0s 0 0 0.79059 0 183 30.00000 0.79059 97.4% - 0s H 0 0 27.0000000 0.79059 97.1% - 0s H 0 0 26.0000000 0.79059 97.0% - 0s 0 2 0.79115 0 183 26.00000 0.79115 97.0% - 0s H 27 27 20.0000000 1.00000 95.0% 32.8 0s * 53 41 31 15.0000000 1.00000 93.3% 21.2 0s H 77 30 11.0000000 1.88779 82.8% 22.0 0s * 158 27 12 10.0000000 4.00000 60.0% 24.7 0s Cutting planes: Gomory: 4 Explored 229 nodes (6887 simplex iterations) in 0.35 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%