Gurobi 5.0.1 (linux64) logging started Sun Nov 18 08:03:45 2012 Optimize a model with 597 rows, 532 columns and 2022 nonzeros Presolve removed 0 rows and 17 columns Presolve time: 0.00s Presolved: 597 rows, 515 columns, 2005 nonzeros Variable types: 0 continuous, 515 integer (514 binary) Found heuristic solution: objective 107.0000000 Root relaxation: objective 0.000000e+00, 289 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 0 214 107.00000 0.00000 100% - 0s H 0 0 98.0000000 0.00000 100% - 0s H 0 0 97.0000000 0.00000 100% - 0s H 0 0 92.0000000 0.00000 100% - 0s 0 0 0.45327 0 215 92.00000 0.45327 100% - 0s H 0 0 89.0000000 0.45327 99.5% - 0s 0 0 1.14598 0 217 89.00000 1.14598 98.7% - 0s H 0 0 84.0000000 1.14598 98.6% - 0s 0 0 1.22015 0 218 84.00000 1.22015 98.5% - 0s H 0 0 71.0000000 1.22015 98.3% - 0s 0 0 1.22101 0 221 71.00000 1.22101 98.3% - 0s 0 0 1.22101 0 221 71.00000 1.22101 98.3% - 0s 0 2 1.22391 0 221 71.00000 1.22391 98.3% - 0s H 54 48 26.0000000 1.40090 94.6% 41.0 0s * 120 83 22 25.0000000 1.45702 94.2% 37.3 0s * 294 202 26 24.0000000 1.62106 93.2% 44.5 0s H 875 379 23.0000000 7.86111 65.8% 42.1 2s 2573 326 21.56216 23 223 23.00000 16.00000 30.4% 33.1 5s * 2675 276 27 22.0000000 16.13953 26.6% 33.2 5s Explored 3685 nodes (114834 simplex iterations) in 6.63 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%