Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:53:45 2012 Optimize a model with 700 rows, 119 columns and 1400 nonzeros Presolve removed 263 rows and 0 columns Presolve time: 0.00s Presolved: 437 rows, 119 columns, 1097 nonzeros Variable types: 0 continuous, 119 integer (119 binary) Found heuristic solution: objective 28.0000000 Root relaxation: objective 4.130000e+01, 270 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 41.30000 0 117 28.00000 41.30000 47.5% - 0s H 0 0 31.0000000 41.30000 33.2% - 0s 0 0 40.85663 0 118 31.00000 40.85663 31.8% - 0s 0 0 40.74057 0 119 31.00000 40.74057 31.4% - 0s 0 0 40.57427 0 119 31.00000 40.57427 30.9% - 0s 0 0 40.43550 0 119 31.00000 40.43550 30.4% - 0s 0 0 40.04666 0 118 31.00000 40.04666 29.2% - 0s 0 0 39.96683 0 118 31.00000 39.96683 28.9% - 0s 0 0 39.89740 0 117 31.00000 39.89740 28.7% - 0s 0 0 39.86243 0 117 31.00000 39.86243 28.6% - 0s 0 0 39.71840 0 119 31.00000 39.71840 28.1% - 0s H 0 0 33.0000000 39.71840 20.4% - 0s 0 0 39.67098 0 118 33.00000 39.67098 20.2% - 0s 0 0 39.63630 0 117 33.00000 39.63630 20.1% - 0s 0 0 39.63364 0 118 33.00000 39.63364 20.1% - 0s 0 0 39.63364 0 117 33.00000 39.63364 20.1% - 0s 0 2 39.63274 0 117 33.00000 39.63274 20.1% - 0s Cutting planes: Gomory: 4 Clique: 1 Zero half: 36 Explored 2060 nodes (54686 simplex iterations) in 4.97 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.300000000000e+01, best bound 3.300000000000e+01, gap 0.0%