Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:20:27 2012 Optimize a model with 271 rows, 200 columns and 875 nonzeros Presolve time: 0.00s Presolved: 271 rows, 200 columns, 875 nonzeros Variable types: 0 continuous, 200 integer (200 binary) Found heuristic solution: objective 59.0000000 Root relaxation: objective 0.000000e+00, 100 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 64 59.00000 0.00000 100% - 0s H 0 0 49.0000000 0.00000 100% - 0s H 0 0 42.0000000 0.00000 100% - 0s 0 0 0.48074 0 66 42.00000 0.48074 98.9% - 0s 0 0 0.91111 0 69 42.00000 0.91111 97.8% - 0s H 0 0 40.0000000 0.91111 97.7% - 0s 0 0 0.91163 0 70 40.00000 0.91163 97.7% - 0s 0 0 0.91163 0 70 40.00000 0.91163 97.7% - 0s H 0 0 39.0000000 0.91163 97.7% - 0s 0 2 0.91522 0 70 39.00000 0.91522 97.7% - 0s * 26 26 17 30.0000000 3.42554 88.6% 33.0 0s * 30 23 16 29.0000000 3.42554 88.2% 29.0 0s * 131 85 17 28.0000000 5.20193 81.4% 29.5 0s H 138 66 24.0000000 6.14147 74.4% 29.9 0s H 165 73 22.0000000 6.14240 72.1% 30.2 0s * 241 76 9 21.0000000 7.97027 62.0% 29.2 0s * 243 44 10 19.0000000 7.97027 58.1% 29.2 0s Cutting planes: Gomory: 4 Mod-K: 1 Explored 405 nodes (11485 simplex iterations) in 0.44 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.900000000000e+01, best bound 1.900000000000e+01, gap 0.0%