Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:25:15 2012 Optimize a model with 231 rows, 188 columns and 763 nonzeros Presolve removed 0 rows and 3 columns Presolve time: 0.00s Presolved: 231 rows, 185 columns, 760 nonzeros Variable types: 0 continuous, 185 integer (184 binary) Found heuristic solution: objective 47.0000000 Root relaxation: objective 0.000000e+00, 103 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 69 47.00000 0.00000 100% - 0s H 0 0 41.0000000 0.00000 100% - 0s H 0 0 33.0000000 0.00000 100% - 0s 0 0 0.47826 0 70 33.00000 0.47826 98.6% - 0s H 0 0 31.0000000 0.47826 98.5% - 0s 0 0 1.09577 0 72 31.00000 1.09577 96.5% - 0s H 0 0 26.0000000 1.09577 95.8% - 0s 0 0 1.42739 0 73 26.00000 1.42739 94.5% - 0s 0 0 1.43178 0 74 26.00000 1.43178 94.5% - 0s 0 0 1.43178 0 74 26.00000 1.43178 94.5% - 0s 0 2 1.43254 0 74 26.00000 1.43254 94.5% - 0s * 25 20 16 22.0000000 2.44652 88.9% 26.0 0s * 84 50 26 20.0000000 5.38552 73.1% 24.3 0s * 119 66 19 19.0000000 5.87921 69.1% 23.2 0s * 330 121 16 18.0000000 8.75441 51.4% 19.2 0s * 449 125 13 17.0000000 9.28386 45.4% 18.6 0s Cutting planes: Gomory: 4 Zero half: 2 Explored 1424 nodes (23269 simplex iterations) in 0.75 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0%