Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:59:33 2012 Optimize a model with 421 rows, 405 columns and 1455 nonzeros Presolve removed 0 rows and 17 columns Presolve time: 0.00s Presolved: 421 rows, 388 columns, 1438 nonzeros Variable types: 0 continuous, 388 integer (387 binary) Found heuristic solution: objective 91.0000000 Root relaxation: objective 0.000000e+00, 238 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 0 170 91.00000 0.00000 100% - 0s H 0 0 62.0000000 0.00000 100% - 0s H 0 0 61.0000000 0.00000 100% - 0s H 0 0 55.0000000 0.00000 100% - 0s 0 0 0.41415 0 171 55.00000 0.41415 99.2% - 0s H 0 0 52.0000000 0.41415 99.2% - 0s 0 0 1.00000 0 175 52.00000 1.00000 98.1% - 0s H 0 0 50.0000000 1.00000 98.0% - 0s 0 0 1.00000 0 177 50.00000 1.00000 98.0% - 0s 0 0 1.00000 0 170 50.00000 1.00000 98.0% - 0s H 0 0 43.0000000 1.00000 97.7% - 0s H 0 0 41.0000000 1.00000 97.6% - 0s H 0 0 36.0000000 1.00000 97.2% - 0s 0 2 1.00000 0 170 36.00000 1.00000 97.2% - 0s H 27 27 33.0000000 1.35593 95.9% 37.5 0s * 33 24 20 13.0000000 1.35593 89.6% 38.9 0s Cutting planes: Gomory: 3 Explored 760 nodes (23676 simplex iterations) in 0.83 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%