Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:03:33 2012 Optimize a model with 449 rows, 424 columns and 1544 nonzeros Presolve removed 0 rows and 20 columns Presolve time: 0.00s Presolved: 449 rows, 404 columns, 1524 nonzeros Variable types: 0 continuous, 404 integer (403 binary) Found heuristic solution: objective 79.0000000 Root relaxation: objective 0.000000e+00, 240 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 0 169 79.00000 0.00000 100% - 0s H 0 0 61.0000000 0.00000 100% - 0s H 0 0 59.0000000 0.00000 100% - 0s 0 0 0.44717 0 170 59.00000 0.44717 99.2% - 0s H 0 0 47.0000000 0.44717 99.0% - 0s 0 0 1.00000 0 175 47.00000 1.00000 97.9% - 0s H 0 0 30.0000000 1.00000 96.7% - 0s 0 0 1.00000 0 176 30.00000 1.00000 96.7% - 0s 0 0 1.00000 0 172 30.00000 1.00000 96.7% - 0s 0 2 1.00000 0 172 30.00000 1.00000 96.7% - 0s H 27 27 20.0000000 1.00000 95.0% 45.5 0s H 54 54 18.0000000 1.00000 94.4% 27.2 0s * 71 64 51 17.0000000 1.00000 94.1% 23.1 0s * 77 24 54 16.0000000 1.00000 93.7% 21.8 0s H 108 32 14.0000000 3.22273 77.0% 22.6 0s * 238 40 11 13.0000000 7.40000 43.1% 27.5 0s Cutting planes: Gomory: 2 Zero half: 12 Explored 331 nodes (10539 simplex iterations) in 0.50 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%