Gurobi 5.0.1 (linux64) logging started Sun Nov 18 02:53:57 2012 Optimize a model with 417 rows, 274 columns and 1314 nonzeros Presolve time: 0.00s Presolved: 417 rows, 274 columns, 1314 nonzeros Variable types: 0 continuous, 274 integer (274 binary) Found heuristic solution: objective 104.0000000 Found heuristic solution: objective 102.0000000 Root relaxation: objective 0.000000e+00, 93 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 66 102.00000 0.00000 100% - 0s H 0 0 87.0000000 0.00000 100% - 0s H 0 0 86.0000000 0.00000 100% - 0s 0 0 0.56250 0 68 86.00000 0.56250 99.3% - 0s 0 0 0.73437 0 68 86.00000 0.73437 99.1% - 0s 0 0 0.82500 0 73 86.00000 0.82500 99.0% - 0s 0 0 0.92187 0 68 86.00000 0.92187 98.9% - 0s 0 0 0.95313 0 68 86.00000 0.95313 98.9% - 0s 0 0 0.96094 0 70 86.00000 0.96094 98.9% - 0s 0 0 0.96094 0 70 86.00000 0.96094 98.9% - 0s 0 2 0.97610 0 70 86.00000 0.97610 98.9% - 0s * 48 41 30 59.0000000 4.19429 92.9% 27.0 0s * 390 289 29 58.0000000 12.18125 79.0% 27.0 0s * 394 281 30 57.0000000 12.18125 78.6% 26.7 0s * 528 362 20 55.0000000 14.08000 74.4% 26.0 0s * 1507 589 28 54.0000000 23.00000 57.4% 25.0 1s * 2097 620 29 52.0000000 27.00000 48.1% 23.8 2s * 2282 664 24 51.0000000 27.34615 46.4% 23.7 2s * 3485 931 25 50.0000000 30.33333 39.3% 22.5 4s 4294 1068 47.48148 21 142 50.00000 31.58537 36.8% 22.1 5s 10282 1347 cutoff 22 50.00000 38.50000 23.0% 20.1 10s 17307 811 48.98113 21 141 50.00000 42.20000 15.6% 18.9 15s Cutting planes: Gomory: 1 Zero half: 5 Explored 20068 nodes (372649 simplex iterations) in 16.72 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.000000000000e+01, best bound 5.000000000000e+01, gap 0.0%