Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:04:46 2012 Optimize a model with 455 rows, 324 columns and 1459 nonzeros Presolve time: 0.00s Presolved: 455 rows, 324 columns, 1459 nonzeros Variable types: 0 continuous, 324 integer (324 binary) Found heuristic solution: objective 112.0000000 Found heuristic solution: objective 110.0000000 Root relaxation: objective 0.000000e+00, 130 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 96 110.00000 0.00000 100% - 0s H 0 0 84.0000000 0.00000 100% - 0s 0 0 0.51087 0 97 84.00000 0.51087 99.4% - 0s H 0 0 83.0000000 0.51087 99.4% - 0s 0 0 1.02803 0 99 83.00000 1.02803 98.8% - 0s H 0 0 81.0000000 1.02803 98.7% - 0s 0 0 1.08089 0 100 81.00000 1.08089 98.7% - 0s 0 0 1.09117 0 103 81.00000 1.09117 98.7% - 0s 0 0 1.09117 0 103 81.00000 1.09117 98.7% - 0s H 0 0 74.0000000 1.09117 98.5% - 0s H 0 0 71.0000000 1.09117 98.5% - 0s H 0 0 70.0000000 1.09117 98.4% - 0s 0 2 1.09951 0 103 70.00000 1.09951 98.4% - 0s * 51 45 26 42.0000000 1.52174 96.4% 35.6 0s * 1998 544 29 41.0000000 23.22222 43.4% 28.0 2s 3983 929 38.20253 22 149 41.00000 26.03846 36.5% 25.2 5s 9477 1448 38.17073 20 148 41.00000 30.13158 26.5% 22.9 10s 15708 1422 cutoff 23 41.00000 32.51351 20.7% 21.8 15s 22574 832 37.59036 20 150 41.00000 34.36735 16.2% 21.1 20s Explored 26023 nodes (537122 simplex iterations) in 22.18 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.100000000000e+01, best bound 4.100000000000e+01, gap 0.0%