Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:54:38 2012 Optimize a model with 710 rows, 120 columns and 1420 nonzeros Presolve removed 260 rows and 0 columns Presolve time: 0.00s Presolved: 450 rows, 120 columns, 1143 nonzeros Variable types: 0 continuous, 120 integer (120 binary) Found heuristic solution: objective 27.0000000 Root relaxation: objective 4.111927e+01, 297 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 41.11927 0 115 27.00000 41.11927 52.3% - 0s H 0 0 29.0000000 41.11927 41.8% - 0s 0 0 40.49117 0 119 29.00000 40.49117 39.6% - 0s H 0 0 30.0000000 40.49117 35.0% - 0s 0 0 40.34374 0 118 30.00000 40.34374 34.5% - 0s 0 0 40.18929 0 119 30.00000 40.18929 34.0% - 0s 0 0 39.93069 0 117 30.00000 39.93069 33.1% - 0s 0 0 39.64024 0 119 30.00000 39.64024 32.1% - 0s 0 0 39.58260 0 119 30.00000 39.58260 31.9% - 0s 0 0 39.52948 0 120 30.00000 39.52948 31.8% - 0s 0 0 39.51664 0 120 30.00000 39.51664 31.7% - 0s 0 0 39.51664 0 120 30.00000 39.51664 31.7% - 0s 0 2 39.51407 0 120 30.00000 39.51407 31.7% - 0s * 96 41 15 31.0000000 38.87457 25.4% 32.0 0s * 227 72 11 32.0000000 38.06667 19.0% 30.1 0s H 230 51 33.0000000 38.06667 15.4% 29.8 0s 613 135 35.04348 16 118 33.00000 36.62500 11.0% 27.3 5s Cutting planes: Gomory: 1 Clique: 1 Zero half: 49 Explored 1764 nodes (48570 simplex iterations) in 8.41 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%