Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:51:17 2012 Optimize a model with 633 rows, 113 columns and 1266 nonzeros Presolve removed 222 rows and 0 columns Presolve time: 0.00s Presolved: 411 rows, 113 columns, 1021 nonzeros Variable types: 0 continuous, 113 integer (113 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 3.973511e+01, 266 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 39.73511 0 109 29.00000 39.73511 37.0% - 0s H 0 0 30.0000000 39.73511 32.5% - 0s 0 0 39.15028 0 111 30.00000 39.15028 30.5% - 0s 0 0 38.67408 0 110 30.00000 38.67408 28.9% - 0s 0 0 38.47729 0 110 30.00000 38.47729 28.3% - 0s 0 0 38.38293 0 111 30.00000 38.38293 27.9% - 0s H 0 0 31.0000000 38.38293 23.8% - 0s 0 0 38.29885 0 111 31.00000 38.29885 23.5% - 0s 0 0 38.22052 0 111 31.00000 38.22052 23.3% - 0s 0 0 38.16067 0 112 31.00000 38.16067 23.1% - 0s 0 0 38.04601 0 106 31.00000 38.04601 22.7% - 0s 0 0 37.95509 0 111 31.00000 37.95509 22.4% - 0s 0 0 37.93550 0 113 31.00000 37.93550 22.4% - 0s 0 0 37.88830 0 112 31.00000 37.88830 22.2% - 0s 0 0 37.87547 0 112 31.00000 37.87547 22.2% - 0s 0 0 37.87547 0 112 31.00000 37.87547 22.2% - 0s 0 2 37.87526 0 112 31.00000 37.87526 22.2% - 0s H 96 29 32.0000000 37.04150 15.8% 27.8 0s 947 132 33.69173 27 85 32.00000 34.61111 8.16% 28.6 5s Cutting planes: Gomory: 4 Zero half: 48 Explored 1865 nodes (45123 simplex iterations) in 5.65 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%