Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:56:45 2012 Optimize a model with 734 rows, 122 columns and 1468 nonzeros Presolve removed 289 rows and 0 columns Presolve time: 0.00s Presolved: 445 rows, 122 columns, 1150 nonzeros Variable types: 0 continuous, 122 integer (122 binary) Found heuristic solution: objective 27.0000000 Root relaxation: objective 4.123962e+01, 300 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 41.23962 0 119 27.00000 41.23962 52.7% - 0s H 0 0 29.0000000 41.23962 42.2% - 0s 0 0 40.74495 0 117 29.00000 40.74495 40.5% - 0s 0 0 40.55057 0 119 29.00000 40.55057 39.8% - 0s 0 0 40.34938 0 118 29.00000 40.34938 39.1% - 0s 0 0 40.20681 0 120 29.00000 40.20681 38.6% - 0s 0 0 40.14879 0 121 29.00000 40.14879 38.4% - 0s 0 0 40.04856 0 121 29.00000 40.04856 38.1% - 0s 0 0 40.01607 0 120 29.00000 40.01607 38.0% - 0s 0 0 39.91421 0 119 29.00000 39.91421 37.6% - 0s 0 0 39.89614 0 119 29.00000 39.89614 37.6% - 0s 0 0 39.85820 0 119 29.00000 39.85820 37.4% - 0s 0 0 39.78926 0 121 29.00000 39.78926 37.2% - 0s H 0 0 30.0000000 39.78926 32.6% - 0s 0 0 39.76029 0 121 30.00000 39.76029 32.5% - 0s H 0 0 31.0000000 39.76029 28.3% - 0s 0 0 39.73436 0 120 31.00000 39.73436 28.2% - 0s 0 0 39.67054 0 119 31.00000 39.67054 28.0% - 0s 0 0 39.64009 0 121 31.00000 39.64009 27.9% - 0s 0 0 39.63453 0 121 31.00000 39.63453 27.9% - 0s 0 0 39.63453 0 121 31.00000 39.63453 27.9% - 0s 0 2 39.63124 0 121 31.00000 39.63124 27.8% - 0s * 62 35 13 32.0000000 39.37165 23.0% 39.5 0s 614 198 36.00000 6 120 32.00000 37.09372 15.9% 30.5 5s 631 209 35.05556 8 121 32.00000 37.09372 15.9% 29.7 10s H 890 241 33.0000000 37.09372 12.4% 36.2 13s Cutting planes: Clique: 10 Zero half: 73 Explored 1971 nodes (61868 simplex iterations) in 14.46 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%