Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:36:53 2012 Optimize a model with 337 rows, 336 columns and 1176 nonzeros Presolve removed 0 rows and 24 columns Presolve time: 0.00s Presolved: 337 rows, 312 columns, 1152 nonzeros Variable types: 0 continuous, 312 integer (311 binary) Found heuristic solution: objective 57.0000000 Root relaxation: objective 0.000000e+00, 206 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 0 134 57.00000 0.00000 100% - 0s H 0 0 55.0000000 0.00000 100% - 0s H 0 0 41.0000000 0.00000 100% - 0s H 0 0 37.0000000 0.00000 100% - 0s 0 0 0.28108 0 136 37.00000 0.28108 99.2% - 0s H 0 0 33.0000000 0.28108 99.1% - 0s 0 0 0.74704 0 142 33.00000 0.74704 97.7% - 0s H 0 0 21.0000000 0.74704 96.4% - 0s 0 0 0.74775 0 145 21.00000 0.74775 96.4% - 0s 0 0 0.74775 0 145 21.00000 0.74775 96.4% - 0s H 0 0 20.0000000 0.74775 96.3% - 0s 0 2 0.74836 0 144 20.00000 0.74836 96.3% - 0s H 27 23 8.0000000 1.00000 87.5% 30.7 0s * 43 16 10 7.0000000 1.00000 85.7% 31.8 0s Cutting planes: Gomory: 4 Zero half: 2 Explored 163 nodes (6546 simplex iterations) in 0.23 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%