Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:52:59 2012 Optimize a model with 703 rows, 118 columns and 1406 nonzeros Presolve removed 267 rows and 0 columns Presolve time: 0.00s Presolved: 436 rows, 118 columns, 1105 nonzeros Variable types: 0 continuous, 118 integer (118 binary) Found heuristic solution: objective 24.0000000 Root relaxation: objective 4.039340e+01, 305 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 40.39340 0 116 24.00000 40.39340 68.3% - 0s H 0 0 28.0000000 40.39340 44.3% - 0s 0 0 40.00803 0 118 28.00000 40.00803 42.9% - 0s 0 0 39.83578 0 118 28.00000 39.83578 42.3% - 0s H 0 0 29.0000000 39.83578 37.4% - 0s 0 0 39.64127 0 117 29.00000 39.64127 36.7% - 0s 0 0 39.49277 0 117 29.00000 39.49277 36.2% - 0s 0 0 39.30440 0 117 29.00000 39.30440 35.5% - 0s 0 0 39.29960 0 117 29.00000 39.29960 35.5% - 0s 0 0 39.26179 0 117 29.00000 39.26179 35.4% - 0s 0 0 39.17985 0 117 29.00000 39.17985 35.1% - 0s 0 0 39.13845 0 117 29.00000 39.13845 35.0% - 0s 0 0 39.05688 0 118 29.00000 39.05688 34.7% - 0s 0 0 38.97404 0 117 29.00000 38.97404 34.4% - 0s 0 0 38.94041 0 118 29.00000 38.94041 34.3% - 0s 0 0 38.91097 0 117 29.00000 38.91097 34.2% - 0s 0 0 38.89970 0 118 29.00000 38.89970 34.1% - 0s 0 0 38.89970 0 118 29.00000 38.89970 34.1% - 0s 0 2 38.89958 0 118 29.00000 38.89958 34.1% - 0s H 18 18 30.0000000 38.89958 29.7% 43.8 0s * 78 41 17 31.0000000 38.25603 23.4% 36.8 0s * 349 106 16 32.0000000 36.50000 14.1% 29.5 0s Explored 3975 nodes (94799 simplex iterations) in 3.83 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.200000000000e+01, best bound 3.200000000000e+01, gap 0.0%