Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:54:04 2012 Optimize a model with 701 rows, 119 columns and 1402 nonzeros Presolve removed 261 rows and 0 columns Presolve time: 0.00s Presolved: 440 rows, 119 columns, 1104 nonzeros Variable types: 0 continuous, 119 integer (119 binary) Found heuristic solution: objective 27.0000000 Root relaxation: objective 4.200598e+01, 275 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 42.00598 0 118 27.00000 42.00598 55.6% - 0s H 0 0 30.0000000 42.00598 40.0% - 0s 0 0 41.40353 0 116 30.00000 41.40353 38.0% - 0s 0 0 40.96951 0 113 30.00000 40.96951 36.6% - 0s 0 0 40.61168 0 118 30.00000 40.61168 35.4% - 0s 0 0 40.31475 0 116 30.00000 40.31475 34.4% - 0s H 0 0 31.0000000 40.31475 30.0% - 0s 0 0 40.15670 0 118 31.00000 40.15670 29.5% - 0s 0 0 40.03806 0 118 31.00000 40.03806 29.2% - 0s 0 0 39.88923 0 118 31.00000 39.88923 28.7% - 0s 0 0 39.82944 0 119 31.00000 39.82944 28.5% - 0s 0 0 39.82944 0 119 31.00000 39.82944 28.5% - 0s 0 0 39.82944 0 119 31.00000 39.82944 28.5% - 0s 0 2 39.82748 0 119 31.00000 39.82748 28.5% - 0s * 396 158 11 32.0000000 37.38889 16.8% 28.8 0s 618 220 34.25000 18 117 32.00000 36.88723 15.3% 27.2 5s 2358 456 33.50000 28 55 32.00000 35.16216 9.88% 27.5 10s Cutting planes: Clique: 5 Zero half: 88 Explored 4608 nodes (105435 simplex iterations) in 11.94 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.200000000000e+01, best bound 3.200000000000e+01, gap 0.0%