Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:50:21 2012 Optimize a model with 375 rows, 249 columns and 1184 nonzeros Presolve time: 0.00s Presolved: 375 rows, 249 columns, 1184 nonzeros Variable types: 0 continuous, 249 integer (249 binary) Found heuristic solution: objective 80.0000000 Root relaxation: objective 0.000000e+00, 86 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 62 80.00000 0.00000 100% - 0s H 0 0 76.0000000 0.00000 100% - 0s 0 0 0.75000 0 64 76.00000 0.75000 99.0% - 0s H 0 0 69.0000000 0.75000 98.9% - 0s 0 0 0.82692 0 64 69.00000 0.82692 98.8% - 0s 0 0 0.96154 0 64 69.00000 0.96154 98.6% - 0s 0 0 0.96154 0 65 69.00000 0.96154 98.6% - 0s 0 0 0.96154 0 64 69.00000 0.96154 98.6% - 0s H 0 0 65.0000000 0.96154 98.5% - 0s 0 2 1.16026 0 64 65.00000 1.16026 98.2% - 0s * 52 52 31 61.0000000 5.33333 91.3% 25.6 0s * 91 69 22 56.0000000 5.35043 90.4% 26.7 0s * 95 62 21 54.0000000 5.35043 90.1% 26.3 0s * 128 81 21 50.0000000 10.03448 79.9% 25.8 0s H 326 204 48.0000000 15.63415 67.4% 23.3 0s * 1485 348 35 47.0000000 23.65854 49.7% 22.9 1s * 1990 422 27 46.0000000 26.41026 42.6% 22.5 1s 5446 691 37.13333 20 110 46.00000 33.66667 26.8% 20.8 5s * 5456 676 27 45.0000000 33.66667 25.2% 20.7 5s Cutting planes: Gomory: 1 Zero half: 2 Explored 9773 nodes (187006 simplex iterations) in 7.87 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.500000000000e+01, best bound 4.500000000000e+01, gap 0.0%