Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:47:35 2012 Optimize a model with 437 rows, 313 columns and 1403 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 437 rows, 312 columns, 1402 nonzeros Variable types: 0 continuous, 312 integer (311 binary) Found heuristic solution: objective 104.0000000 Found heuristic solution: objective 100.0000000 Root relaxation: objective 0.000000e+00, 117 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 93 100.00000 0.00000 100% - 0s H 0 0 87.0000000 0.00000 100% - 0s H 0 0 80.0000000 0.00000 100% - 0s 0 0 0.48643 0 95 80.00000 0.48643 99.4% - 0s 0 0 0.88721 0 98 80.00000 0.88721 98.9% - 0s H 0 0 79.0000000 0.88721 98.9% - 0s 0 0 0.88721 0 98 79.00000 0.88721 98.9% - 0s H 0 0 74.0000000 0.88721 98.8% - 0s 0 2 0.89271 0 98 74.00000 0.89271 98.8% - 0s H 27 27 66.0000000 5.25114 92.0% 42.0 0s H 44 44 54.0000000 5.25114 90.3% 35.2 0s H 44 44 53.0000000 5.25114 90.1% 35.2 0s * 46 46 26 52.0000000 5.25114 89.9% 34.5 0s * 102 75 31 50.0000000 5.25507 89.5% 28.7 0s H 108 74 48.0000000 8.11273 83.1% 29.2 0s * 236 168 28 45.0000000 8.22129 81.7% 28.1 0s * 496 300 24 44.0000000 13.12223 70.2% 26.8 0s * 1331 537 34 42.0000000 17.13984 59.2% 28.4 2s H 1881 592 41.0000000 19.40121 52.7% 27.7 2s H 2234 654 40.0000000 20.31392 49.2% 27.4 3s 3494 866 cutoff 28 40.00000 22.46307 43.8% 26.7 5s 7886 1156 30.46250 23 133 40.00000 27.87500 30.3% 25.6 10s 13394 855 cutoff 26 40.00000 31.09091 22.3% 24.7 15s Cutting planes: Gomory: 3 Mod-K: 1 Explored 17348 nodes (414160 simplex iterations) in 18.33 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+01, best bound 4.000000000000e+01, gap 0.0%