Gurobi 5.0.1 (linux64) logging started Sat Nov 17 21:26:30 2012 Optimize a model with 449 rows, 255 columns and 1375 nonzeros Presolve time: 0.00s Presolved: 449 rows, 255 columns, 1375 nonzeros Variable types: 0 continuous, 255 integer (255 binary) Found heuristic solution: objective 110.0000000 Root relaxation: objective 0.000000e+00, 57 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 31 110.00000 0.00000 100% - 0s H 0 0 105.0000000 0.00000 100% - 0s H 0 0 104.0000000 0.00000 100% - 0s 0 0 1.06093 0 33 104.00000 1.06093 99.0% - 0s 0 0 1.08961 0 33 104.00000 1.08961 99.0% - 0s 0 0 1.11828 0 33 104.00000 1.11828 98.9% - 0s 0 0 1.11828 0 33 104.00000 1.11828 98.9% - 0s 0 0 1.11828 0 33 104.00000 1.11828 98.9% - 0s 0 0 1.11828 0 33 104.00000 1.11828 98.9% - 0s 0 2 1.18519 0 33 104.00000 1.18519 98.9% - 0s * 113 82 22 102.0000000 17.13131 83.2% 36.8 0s * 290 219 22 101.0000000 23.16667 77.1% 39.3 0s * 356 238 21 100.0000000 23.21637 76.8% 36.2 0s * 362 233 21 99.0000000 23.21637 76.5% 35.9 0s H 488 305 97.0000000 28.49573 70.6% 35.9 0s * 588 350 20 95.0000000 30.21739 68.2% 35.1 0s * 1104 493 33 94.0000000 33.50000 64.4% 35.3 1s * 1211 493 32 91.0000000 33.50000 63.2% 35.0 1s H 2433 676 90.0000000 46.66667 48.1% 32.1 2s H 2460 678 89.0000000 46.71429 47.5% 32.0 2s H 2764 738 87.0000000 48.66667 44.1% 31.6 3s 4070 984 73.50000 24 137 87.00000 52.40000 39.8% 31.0 5s 9229 1556 83.78947 25 141 87.00000 62.75000 27.9% 29.2 10s 15160 1744 86.00000 26 142 87.00000 67.45455 22.5% 28.1 15s 22091 1403 cutoff 26 87.00000 71.40000 17.9% 27.0 20s Cutting planes: Gomory: 1 Zero half: 5 Explored 29927 nodes (774267 simplex iterations) in 24.93 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.700000000000e+01, best bound 8.700000000000e+01, gap 0.0%