Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:55:21 2012 Optimize a model with 369 rows, 373 columns and 1293 nonzeros Presolve removed 0 rows and 25 columns Presolve time: 0.00s Presolved: 369 rows, 348 columns, 1268 nonzeros Variable types: 0 continuous, 348 integer (347 binary) Found heuristic solution: objective 69.0000000 Root relaxation: objective 0.000000e+00, 209 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 0 152 69.00000 0.00000 100% - 0s H 0 0 50.0000000 0.00000 100% - 0s H 0 0 45.0000000 0.00000 100% - 0s 0 0 0.25495 0 154 45.00000 0.25495 99.4% - 0s H 0 0 29.0000000 0.25495 99.1% - 0s 0 0 0.84692 0 158 29.00000 0.84692 97.1% - 0s H 0 0 13.0000000 0.84692 93.5% - 0s 0 0 0.84692 0 158 13.00000 0.84692 93.5% - 0s 0 2 0.84806 0 158 13.00000 0.84806 93.5% - 0s H 27 27 11.0000000 1.00000 90.9% 24.8 0s H 82 33 8.0000000 1.00000 87.5% 15.6 0s Cutting planes: Gomory: 3 Mod-K: 1 Explored 443 nodes (10806 simplex iterations) in 0.38 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%