Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:56:36 2012 Optimize a model with 731 rows, 122 columns and 1462 nonzeros Presolve removed 274 rows and 0 columns Presolve time: 0.00s Presolved: 457 rows, 122 columns, 1153 nonzeros Variable types: 0 continuous, 122 integer (122 binary) Found heuristic solution: objective 27.0000000 Root relaxation: objective 4.277439e+01, 287 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 42.77439 0 122 27.00000 42.77439 58.4% - 0s H 0 0 30.0000000 42.77439 42.6% - 0s 0 0 42.26010 0 120 30.00000 42.26010 40.9% - 0s 0 0 42.07686 0 119 30.00000 42.07686 40.3% - 0s 0 0 41.85632 0 122 30.00000 41.85632 39.5% - 0s 0 0 41.61522 0 121 30.00000 41.61522 38.7% - 0s 0 0 41.32540 0 121 30.00000 41.32540 37.8% - 0s 0 0 41.03112 0 120 30.00000 41.03112 36.8% - 0s 0 0 40.94451 0 119 30.00000 40.94451 36.5% - 0s H 0 0 32.0000000 40.94451 28.0% - 0s 0 0 40.85842 0 121 32.00000 40.85842 27.7% - 0s 0 0 40.78116 0 119 32.00000 40.78116 27.4% - 0s 0 0 40.70061 0 120 32.00000 40.70061 27.2% - 0s 0 0 40.64996 0 119 32.00000 40.64996 27.0% - 0s 0 0 40.60683 0 121 32.00000 40.60683 26.9% - 0s 0 0 40.57089 0 120 32.00000 40.57089 26.8% - 0s 0 0 40.55647 0 121 32.00000 40.55647 26.7% - 0s 0 0 40.55647 0 121 32.00000 40.55647 26.7% - 0s 0 2 40.55407 0 121 32.00000 40.55407 26.7% - 0s H 108 45 33.0000000 39.49958 19.7% 37.8 0s 614 188 36.21569 11 121 33.00000 37.58868 13.9% 30.5 5s Cutting planes: Gomory: 4 Clique: 1 Zero half: 51 Explored 3429 nodes (87994 simplex iterations) in 8.23 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%