Gurobi 5.0.1 (linux64) logging started Wed Dec 19 14:01:18 2012 Optimize a model with 442 rows, 441 columns and 1923 nonzeros Presolve removed 322 rows and 306 columns Presolve time: 0.00s Presolved: 120 rows, 135 columns, 847 nonzeros Variable types: 20 continuous, 115 integer (115 binary) Found heuristic solution: objective 379.0000000 Root relaxation: objective 3.272537e+02, 51 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 327.25373 0 14 379.00000 327.25373 13.7% - 0s H 0 0 377.0000000 327.25373 13.2% - 0s H 0 0 367.0000000 327.25373 10.8% - 0s 0 0 330.58945 0 23 367.00000 330.58945 9.92% - 0s 0 0 333.75490 0 24 367.00000 333.75490 9.06% - 0s 0 0 334.21154 0 24 367.00000 334.21154 8.93% - 0s 0 0 336.50000 0 22 367.00000 336.50000 8.31% - 0s 0 0 336.50000 0 22 367.00000 336.50000 8.31% - 0s H 0 0 364.0000000 336.50000 7.55% - 0s H 0 0 359.0000000 336.50000 6.27% - 0s 0 0 336.50000 0 14 359.00000 336.50000 6.27% - 0s 0 0 336.50000 0 20 359.00000 336.50000 6.27% - 0s 0 0 336.83077 0 22 359.00000 336.83077 6.18% - 0s 0 0 337.85714 0 15 359.00000 337.85714 5.89% - 0s 0 0 338.16667 0 19 359.00000 338.16667 5.80% - 0s 0 0 338.16667 0 19 359.00000 338.16667 5.80% - 0s 0 2 342.00000 0 17 359.00000 342.00000 4.74% - 0s * 22 4 6 357.0000000 344.90192 3.39% 5.9 0s * 36 2 7 352.0000000 349.30645 0.77% 5.6 0s Cutting planes: Gomory: 1 Cover: 7 Implied bound: 8 Clique: 4 MIR: 5 GUB cover: 2 Explored 39 nodes (424 simplex iterations) in 0.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.520000000000e+02, best bound 3.520000000000e+02, gap 0.0%