Gurobi 5.0.1 (linux64) logging started Sun Nov 18 08:37:31 2012 Optimize a model with 587 rows, 531 columns and 1996 nonzeros Presolve removed 0 rows and 18 columns Presolve time: 0.00s Presolved: 587 rows, 513 columns, 1978 nonzeros Variable types: 0 continuous, 513 integer (512 binary) Found heuristic solution: objective 109.0000000 Root relaxation: objective 0.000000e+00, 309 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 215 109.00000 0.00000 100% - 0s H 0 0 93.0000000 0.00000 100% - 0s H 0 0 91.0000000 0.00000 100% - 0s H 0 0 88.0000000 0.00000 100% - 0s 0 0 0.48163 0 216 88.00000 0.48163 99.5% - 0s H 0 0 85.0000000 0.48163 99.4% - 0s 0 0 1.00000 0 218 85.00000 1.00000 98.8% - 0s H 0 0 81.0000000 1.00000 98.8% - 0s 0 0 1.00000 0 217 81.00000 1.00000 98.8% - 0s H 0 0 75.0000000 1.00000 98.7% - 0s 0 0 1.00000 0 215 75.00000 1.00000 98.7% - 0s H 0 0 73.0000000 1.00000 98.6% - 0s H 0 0 72.0000000 1.00000 98.6% - 0s H 0 0 71.0000000 1.00000 98.6% - 0s 0 2 1.00000 0 215 71.00000 1.00000 98.6% - 0s H 27 27 47.0000000 2.30469 95.1% 55.2 0s * 42 42 22 25.0000000 2.30469 90.8% 43.4 0s * 78 52 22 24.0000000 2.40000 90.0% 37.6 0s * 114 66 21 23.0000000 5.00000 78.3% 35.4 0s * 277 114 17 22.0000000 8.16832 62.9% 36.5 0s Cutting planes: Gomory: 2 Explored 1448 nodes (49547 simplex iterations) in 2.57 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.200000000000e+01, best bound 2.200000000000e+01, gap 0.0%