Gurobi 5.0.1 (linux64) logging started Sun Nov 18 08:25:38 2012 Optimize a model with 563 rows, 518 columns and 1923 nonzeros Presolve removed 0 rows and 20 columns Presolve time: 0.00s Presolved: 563 rows, 498 columns, 1903 nonzeros Variable types: 0 continuous, 498 integer (497 binary) Found heuristic solution: objective 107.0000000 Root relaxation: objective 0.000000e+00, 327 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 0 204 107.00000 0.00000 100% - 0s H 0 0 80.0000000 0.00000 100% - 0s H 0 0 78.0000000 0.00000 100% - 0s 0 0 0.26502 0 206 78.00000 0.26502 100% - 0s H 0 0 71.0000000 0.26502 100% - 0s 0 0 0.73609 0 207 71.00000 0.73609 99.0% - 0s H 0 0 68.0000000 0.73609 98.9% - 0s H 0 0 59.0000000 0.73609 98.8% - 0s 0 0 0.73619 0 209 59.00000 0.73619 98.8% - 0s 0 0 0.73619 0 209 59.00000 0.73619 98.8% - 0s H 0 0 57.0000000 0.73619 98.7% - 0s H 0 0 52.0000000 0.73619 98.6% - 0s H 0 0 51.0000000 0.73619 98.6% - 0s 0 2 0.73619 0 209 51.00000 0.73619 98.6% - 0s H 27 27 44.0000000 1.00000 97.7% 37.5 0s H 54 38 22.0000000 1.00000 95.5% 30.8 0s * 115 74 16 21.0000000 2.75758 86.9% 34.8 0s 3097 903 19.35404 26 197 21.00000 12.00000 42.9% 24.8 5s 7038 1724 17.35294 25 205 21.00000 14.23077 32.2% 21.7 10s 11265 2103 18.23077 23 214 21.00000 15.30597 27.1% 20.9 15s 15356 2044 17.77457 23 203 21.00000 16.05634 23.5% 21.1 20s 19628 1578 18.56627 24 198 21.00000 16.87805 19.6% 21.1 25s 24065 601 infeasible 29 21.00000 18.18987 13.4% 21.2 30s Explored 25155 nodes (528838 simplex iterations) in 30.96 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.100000000000e+01, best bound 2.100000000000e+01, gap 0.0%