Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:18:33 2012 Optimize a model with 944 rows, 136 columns and 1888 nonzeros Presolve removed 384 rows and 0 columns Presolve time: 0.01s Presolved: 560 rows, 136 columns, 1476 nonzeros Variable types: 0 continuous, 136 integer (136 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 4.473160e+01, 370 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 44.73160 0 132 29.00000 44.73160 54.2% - 0s 0 0 44.28635 0 134 29.00000 44.28635 52.7% - 0s 0 0 44.06450 0 133 29.00000 44.06450 51.9% - 0s 0 0 43.75494 0 134 29.00000 43.75494 50.9% - 0s 0 0 43.56237 0 134 29.00000 43.56237 50.2% - 0s 0 0 43.51487 0 133 29.00000 43.51487 50.1% - 0s 0 0 43.24729 0 132 29.00000 43.24729 49.1% - 0s 0 0 43.19649 0 135 29.00000 43.19649 49.0% - 0s H 0 0 30.0000000 43.19649 44.0% - 0s 0 0 42.90823 0 135 30.00000 42.90823 43.0% - 0s 0 0 42.76479 0 134 30.00000 42.76479 42.5% - 0s 0 0 42.69792 0 135 30.00000 42.69792 42.3% - 0s H 0 0 31.0000000 42.69792 37.7% - 0s 0 0 42.65337 0 135 31.00000 42.65337 37.6% - 0s 0 0 42.53193 0 134 31.00000 42.53193 37.2% - 0s 0 0 42.48412 0 133 31.00000 42.48412 37.0% - 0s 0 0 42.42008 0 133 31.00000 42.42008 36.8% - 0s 0 0 42.27247 0 135 31.00000 42.27247 36.4% - 0s 0 0 42.19786 0 134 31.00000 42.19786 36.1% - 0s 0 0 42.19073 0 134 31.00000 42.19073 36.1% - 0s 0 0 42.18266 0 135 31.00000 42.18266 36.1% - 0s 0 0 42.18266 0 135 31.00000 42.18266 36.1% - 0s H 0 0 33.0000000 42.18266 27.8% - 0s 0 2 42.18202 0 135 33.00000 42.18202 27.8% - 0s * 52 21 11 34.0000000 41.84748 23.1% 50.8 0s 612 202 37.11765 11 133 34.00000 39.48847 16.1% 39.3 5s 2932 687 35.12500 35 79 34.00000 37.62317 10.7% 37.0 10s Cutting planes: Gomory: 4 Clique: 2 Zero half: 54 Explored 6039 nodes (185560 simplex iterations) in 13.49 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%