Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:53:55 2012 Optimize a model with 379 rows, 375 columns and 1320 nonzeros Presolve removed 0 rows and 18 columns Presolve time: 0.00s Presolved: 379 rows, 357 columns, 1302 nonzeros Variable types: 0 continuous, 357 integer (356 binary) Found heuristic solution: objective 81.0000000 Root relaxation: objective 0.000000e+00, 226 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 0 158 81.00000 0.00000 100% - 0s H 0 0 55.0000000 0.00000 100% - 0s H 0 0 38.0000000 0.00000 100% - 0s 0 0 0.39420 0 159 38.00000 0.39420 99.0% - 0s H 0 0 27.0000000 0.39420 98.5% - 0s 0 0 1.00000 0 161 27.00000 1.00000 96.3% - 0s H 0 0 17.0000000 1.00000 94.1% - 0s 0 0 1.00000 0 162 17.00000 1.00000 94.1% - 0s 0 0 1.00000 0 160 17.00000 1.00000 94.1% - 0s 0 2 1.00000 0 158 17.00000 1.00000 94.1% - 0s * 36 22 20 9.0000000 2.21661 75.4% 33.0 0s * 105 14 6 8.0000000 5.00000 37.5% 34.8 0s Cutting planes: Gomory: 3 Explored 131 nodes (5243 simplex iterations) in 0.21 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%