Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:07:02 2012 Optimize a model with 553 rows, 502 columns and 1882 nonzeros Presolve removed 0 rows and 16 columns Presolve time: 0.00s Presolved: 553 rows, 486 columns, 1866 nonzeros Variable types: 0 continuous, 486 integer (485 binary) Found heuristic solution: objective 99.0000000 Root relaxation: objective 0.000000e+00, 282 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 0 195 99.00000 0.00000 100% - 0s H 0 0 91.0000000 0.00000 100% - 0s H 0 0 70.0000000 0.00000 100% - 0s H 0 0 60.0000000 0.00000 100% - 0s 0 0 0.42051 0 196 60.00000 0.42051 99.3% - 0s H 0 0 59.0000000 0.42051 99.3% - 0s 0 0 1.06678 0 200 59.00000 1.06678 98.2% - 0s 0 0 1.06758 0 203 59.00000 1.06758 98.2% - 0s 0 0 1.06758 0 201 59.00000 1.06758 98.2% - 0s H 0 0 53.0000000 1.06758 98.0% - 0s H 0 0 51.0000000 1.06758 97.9% - 0s H 0 0 45.0000000 1.06758 97.6% - 0s 0 2 1.06758 0 199 45.00000 1.06758 97.6% - 0s H 27 27 39.0000000 1.07136 97.3% 37.8 0s * 49 40 27 22.0000000 1.07136 95.1% 32.3 0s * 314 177 24 21.0000000 4.43243 78.9% 34.7 0s H 924 299 20.0000000 7.64516 61.8% 34.6 1s 2573 117 16.68605 25 204 20.00000 15.54118 22.3% 34.5 5s Explored 2809 nodes (96173 simplex iterations) in 5.34 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+01, best bound 2.000000000000e+01, gap 0.0%