Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:59:48 2012 Optimize a model with 351 rows, 259 columns and 1134 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 351 rows, 258 columns, 1133 nonzeros Variable types: 0 continuous, 258 integer (257 binary) Found heuristic solution: objective 85.0000000 Found heuristic solution: objective 81.0000000 Root relaxation: objective 0.000000e+00, 124 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 82 81.00000 0.00000 100% - 0s H 0 0 72.0000000 0.00000 100% - 0s H 0 0 70.0000000 0.00000 100% - 0s 0 0 0.52736 0 83 70.00000 0.52736 99.2% - 0s H 0 0 68.0000000 0.52736 99.2% - 0s 0 0 1.18515 0 85 68.00000 1.18515 98.3% - 0s H 0 0 63.0000000 1.18515 98.1% - 0s 0 0 1.48143 0 85 63.00000 1.48143 97.6% - 0s 0 0 1.48989 0 85 63.00000 1.48989 97.6% - 0s H 0 0 60.0000000 1.48989 97.5% - 0s H 0 0 52.0000000 1.48989 97.1% - 0s H 0 0 51.0000000 1.48989 97.1% - 0s 0 2 1.50179 0 85 51.00000 1.50179 97.1% - 0s * 33 32 20 35.0000000 5.00249 85.7% 33.9 0s * 1405 342 27 34.0000000 17.56250 48.3% 27.7 1s * 2006 348 26 33.0000000 20.59016 37.6% 26.5 1s * 4256 309 28 32.0000000 25.60000 20.0% 24.5 3s Explored 5433 nodes (126747 simplex iterations) in 4.79 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.200000000000e+01, best bound 3.200000000000e+01, gap 0.0%