Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:51:27 2012 Optimize a model with 355 rows, 239 columns and 1124 nonzeros Presolve time: 0.00s Presolved: 355 rows, 239 columns, 1124 nonzeros Variable types: 0 continuous, 239 integer (239 binary) Found heuristic solution: objective 78.0000000 Root relaxation: objective 0.000000e+00, 107 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 61 78.00000 0.00000 100% - 0s H 0 0 63.0000000 0.00000 100% - 0s 0 0 0.50876 0 62 63.00000 0.50876 99.2% - 0s H 0 0 61.0000000 0.50876 99.2% - 0s 0 0 1.34782 0 64 61.00000 1.34782 97.8% - 0s 0 0 1.49011 0 64 61.00000 1.49011 97.6% - 0s 0 2 1.49589 0 64 61.00000 1.49589 97.5% - 0s * 44 42 27 50.0000000 4.68659 90.6% 35.1 0s H 88 77 49.0000000 5.41194 89.0% 31.0 0s H 88 75 48.0000000 5.41194 88.7% 31.0 0s * 127 98 20 47.0000000 7.15670 84.8% 31.0 0s * 277 218 27 44.0000000 9.45312 78.5% 33.9 0s * 852 481 31 43.0000000 13.54209 68.5% 31.6 1s * 890 455 31 42.0000000 13.54209 67.8% 31.0 1s * 1692 457 29 41.0000000 20.66667 49.6% 28.2 1s H 1726 444 40.0000000 20.66667 48.3% 28.0 1s H 1915 452 39.0000000 21.23913 45.5% 27.2 1s 5113 665 36.55556 23 102 39.00000 28.50000 26.9% 24.8 5s Cutting planes: Gomory: 3 Explored 9236 nodes (211872 simplex iterations) in 7.98 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.900000000000e+01, best bound 3.900000000000e+01, gap 0.0%