Gurobi 5.0.1 (linux64) logging started Sun Nov 18 09:14:17 2012 Optimize a model with 619 rows, 550 columns and 2095 nonzeros Presolve removed 0 rows and 13 columns Presolve time: 0.00s Presolved: 619 rows, 537 columns, 2082 nonzeros Variable types: 0 continuous, 537 integer (536 binary) Found heuristic solution: objective 120.0000000 Root relaxation: objective 0.000000e+00, 368 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 227 120.00000 0.00000 100% - 0s H 0 0 107.0000000 0.00000 100% - 0s H 0 0 97.0000000 0.00000 100% - 0s H 0 0 93.0000000 0.00000 100% - 0s 0 0 0.32022 0 229 93.00000 0.32022 100% - 0s H 0 0 91.0000000 0.32022 100% - 0s 0 0 0.84031 0 231 91.00000 0.84031 99.1% - 0s H 0 0 88.0000000 0.84031 99.0% - 0s 0 0 0.84101 0 232 88.00000 0.84101 99.0% - 0s 0 0 0.84101 0 232 88.00000 0.84101 99.0% - 0s H 0 0 80.0000000 0.84101 98.9% - 0s H 0 0 68.0000000 0.84101 98.8% - 0s H 0 0 62.0000000 0.84101 98.6% - 0s 0 2 0.84239 0 232 62.00000 0.84239 98.6% - 0s H 27 27 53.0000000 1.00000 98.1% 51.4 0s H 54 54 46.0000000 1.00000 97.8% 37.5 0s * 62 47 42 25.0000000 1.00000 96.0% 38.6 0s * 967 443 31 24.0000000 8.37778 65.1% 42.9 2s 2271 687 16.46040 18 225 24.00000 12.00000 50.0% 37.6 5s 5074 1148 17.23000 20 227 24.00000 14.92063 37.8% 34.5 10s 7968 1227 cutoff 23 24.00000 16.44737 31.5% 34.4 15s 11052 1100 20.95652 21 242 24.00000 17.88557 25.5% 34.0 20s 14834 661 22.07282 21 241 24.00000 19.63768 18.2% 32.6 25s Explored 16836 nodes (537755 simplex iterations) in 27.34 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.400000000000e+01, best bound 2.400000000000e+01, gap 0.0%