Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:27:31 2012 Optimize a model with 401 rows, 260 columns and 1260 nonzeros Presolve time: 0.00s Presolved: 401 rows, 260 columns, 1260 nonzeros Variable types: 0 continuous, 260 integer (260 binary) Found heuristic solution: objective 99.0000000 Found heuristic solution: objective 96.0000000 Root relaxation: objective 0.000000e+00, 96 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 60 96.00000 0.00000 100% - 0s H 0 0 78.0000000 0.00000 100% - 0s H 0 0 77.0000000 0.00000 100% - 0s 0 0 0.55556 0 61 77.00000 0.55556 99.3% - 0s 0 0 1.00000 0 62 77.00000 1.00000 98.7% - 0s 0 0 1.20000 0 61 77.00000 1.20000 98.4% - 0s 0 0 1.27407 0 62 77.00000 1.27407 98.3% - 0s 0 2 1.30741 0 62 77.00000 1.30741 98.3% - 0s H 32 32 72.0000000 5.06780 93.0% 40.2 0s * 42 42 23 62.0000000 5.06780 91.8% 35.7 0s * 83 71 23 61.0000000 6.55556 89.3% 32.2 0s * 122 101 23 60.0000000 7.31579 87.8% 32.7 0s * 292 243 25 59.0000000 10.64151 82.0% 34.4 0s * 453 336 23 58.0000000 12.22222 78.9% 31.9 0s H 679 439 55.0000000 15.51852 71.8% 32.1 1s H 1840 500 52.0000000 27.90909 46.3% 30.0 2s H 3871 721 51.0000000 33.06818 35.2% 29.2 4s H 4099 710 50.0000000 33.22222 33.6% 29.1 4s 4129 711 36.98077 21 115 50.00000 33.25926 33.5% 29.1 5s * 6755 614 27 49.0000000 37.00000 24.5% 28.3 7s 9326 130 cutoff 25 49.00000 44.00000 10.2% 27.8 10s Cutting planes: Gomory: 3 Explored 9489 nodes (262687 simplex iterations) in 10.10 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.900000000000e+01, best bound 4.900000000000e+01, gap 0.0%