Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:01:58 2012 Optimize a model with 10499 rows, 1260 columns and 32583 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.11s Presolved: 10532 rows, 1258 columns, 34179 nonzeros Variable types: 0 continuous, 1258 integer (1258 binary) Found heuristic solution: objective 35.0000000 Root relaxation: objective 3.000000e+00, 8619 iterations, 0.61 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 68 35.00000 3.00000 91.4% - 2s H 0 0 34.0000000 3.00000 91.2% - 2s H 0 0 11.0000000 3.00000 72.7% - 2s 0 0 3.46018 0 1094 11.00000 3.46018 68.5% - 3s 0 0 3.46018 0 1108 11.00000 3.46018 68.5% - 4s H 0 0 9.0000000 3.46018 61.6% - 4s 0 0 3.46018 0 1039 9.00000 3.46018 61.6% - 6s 0 0 3.46018 0 1056 9.00000 3.46018 61.6% - 8s 0 0 3.46018 0 1077 9.00000 3.46018 61.6% - 9s 0 0 3.46018 0 1066 9.00000 3.46018 61.6% - 11s 0 0 3.46018 0 1046 9.00000 3.46018 61.6% - 13s 0 0 3.46018 0 1043 9.00000 3.46018 61.6% - 15s 0 0 3.46018 0 1073 9.00000 3.46018 61.6% - 16s 0 0 3.46018 0 1080 9.00000 3.46018 61.6% - 18s 0 0 3.46018 0 1039 9.00000 3.46018 61.6% - 19s 0 2 4.14286 0 1011 9.00000 4.14286 54.0% - 25s H 54 25 7.0000000 4.14286 40.8% 125 27s 431 40 infeasible 17 7.00000 5.00000 28.6% 74.0 30s 901 53 6.00000 5 1039 7.00000 5.00000 28.6% 72.4 36s Explored 902 nodes (140237 simplex iterations) in 37.30 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%