Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:37:08 2012 Optimize a model with 543 rows, 490 columns and 1845 nonzeros Presolve removed 0 rows and 20 columns Presolve time: 0.00s Presolved: 543 rows, 470 columns, 1825 nonzeros Variable types: 0 continuous, 470 integer (469 binary) Found heuristic solution: objective 98.0000000 Root relaxation: objective 0.000000e+00, 257 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 0 194 98.00000 0.00000 100% - 0s H 0 0 94.0000000 0.00000 100% - 0s H 0 0 89.0000000 0.00000 100% - 0s H 0 0 84.0000000 0.00000 100% - 0s 0 0 0.28592 0 196 84.00000 0.28592 100% - 0s H 0 0 79.0000000 0.28592 100% - 0s 0 0 0.85935 0 200 79.00000 0.85935 98.9% - 0s H 0 0 73.0000000 0.85935 98.8% - 0s H 0 0 65.0000000 0.85935 98.7% - 0s 0 0 0.85936 0 202 65.00000 0.85936 98.7% - 0s 0 0 0.85936 0 201 65.00000 0.85936 98.7% - 0s H 0 0 63.0000000 0.85936 98.6% - 0s H 0 0 61.0000000 0.85936 98.6% - 0s H 0 0 58.0000000 0.85936 98.5% - 0s 0 2 0.86023 0 201 58.00000 0.86023 98.5% - 0s H 27 27 43.0000000 1.00000 97.7% 36.7 0s H 54 46 25.0000000 1.00000 96.0% 28.3 0s * 859 419 42 23.0000000 6.43850 72.0% 32.5 1s H 1317 408 22.0000000 9.02062 59.0% 30.7 2s 3332 801 18.33742 28 199 22.00000 13.21053 40.0% 26.5 5s 7298 1112 16.80952 24 200 22.00000 15.73282 28.5% 24.2 10s 11278 945 20.57692 27 193 22.00000 17.00000 22.7% 24.3 15s Explored 15457 nodes (373061 simplex iterations) in 19.77 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.200000000000e+01, best bound 2.200000000000e+01, gap 0.0%