Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:51:34 2012 Optimize a model with 666 rows, 114 columns and 1332 nonzeros Presolve removed 245 rows and 0 columns Presolve time: 0.00s Presolved: 421 rows, 114 columns, 1062 nonzeros Variable types: 0 continuous, 114 integer (114 binary) Found heuristic solution: objective 30.0000000 Root relaxation: objective 3.933949e+01, 271 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 39.33949 0 110 30.00000 39.33949 31.1% - 0s H 0 0 31.0000000 39.33949 26.9% - 0s 0 0 38.81851 0 112 31.00000 38.81851 25.2% - 0s H 0 0 32.0000000 38.81851 21.3% - 0s 0 0 38.62968 0 113 32.00000 38.62968 20.7% - 0s H 0 0 33.0000000 38.62968 17.1% - 0s 0 0 38.52640 0 112 33.00000 38.52640 16.7% - 0s 0 0 38.47582 0 113 33.00000 38.47582 16.6% - 0s 0 0 38.34096 0 111 33.00000 38.34096 16.2% - 0s 0 0 38.26606 0 110 33.00000 38.26606 16.0% - 0s 0 0 38.18182 0 111 33.00000 38.18182 15.7% - 0s 0 0 38.14715 0 110 33.00000 38.14715 15.6% - 0s 0 0 38.11285 0 112 33.00000 38.11285 15.5% - 0s 0 0 38.08170 0 113 33.00000 38.08170 15.4% - 0s 0 0 38.04974 0 111 33.00000 38.04974 15.3% - 0s 0 0 38.01728 0 111 33.00000 38.01728 15.2% - 0s 0 0 38.01685 0 111 33.00000 38.01685 15.2% - 0s 0 0 38.01685 0 111 33.00000 38.01685 15.2% - 0s 0 2 38.01685 0 109 33.00000 38.01685 15.2% - 0s * 170 24 6 34.0000000 36.67954 7.88% 31.7 0s Cutting planes: Clique: 3 Zero half: 49 Explored 274 nodes (8822 simplex iterations) in 0.40 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.400000000000e+01, best bound 3.400000000000e+01, gap 0.0%