Gurobi 5.0.1 (linux64) logging started Sun Nov 18 08:49:58 2012 Optimize a model with 593 rows, 535 columns and 2015 nonzeros Presolve removed 0 rows and 24 columns Presolve time: 0.00s Presolved: 593 rows, 511 columns, 1991 nonzeros Variable types: 0 continuous, 511 integer (510 binary) Found heuristic solution: objective 105.0000000 Root relaxation: objective 0.000000e+00, 299 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 0 210 105.00000 0.00000 100% - 0s H 0 0 95.0000000 0.00000 100% - 0s H 0 0 91.0000000 0.00000 100% - 0s 0 0 0.38209 0 212 91.00000 0.38209 100% - 0s H 0 0 85.0000000 0.38209 100% - 0s 0 0 0.79309 0 213 85.00000 0.79309 99.1% - 0s H 0 0 75.0000000 0.79309 98.9% - 0s 0 0 0.79521 0 215 75.00000 0.79521 98.9% - 0s 0 0 0.79521 0 215 75.00000 0.79521 98.9% - 0s 0 2 0.79573 0 215 75.00000 0.79573 98.9% - 0s H 27 27 53.0000000 1.00000 98.1% 53.4 0s H 54 54 32.0000000 1.00000 96.9% 40.1 0s H 66 54 30.0000000 1.00000 96.7% 35.0 0s H 108 78 28.0000000 1.00000 96.4% 35.5 0s * 111 72 27 27.0000000 1.00000 96.3% 35.1 0s H 143 75 25.0000000 1.00000 96.0% 37.1 0s * 1439 438 35 24.0000000 9.03448 62.4% 38.1 3s 2328 664 cutoff 24 24.00000 12.52381 47.8% 34.7 5s 4724 970 22.55172 25 215 24.00000 15.92982 33.6% 33.2 10s 7345 838 20.80556 22 215 24.00000 17.88298 25.5% 32.2 15s 10294 105 22.81818 28 205 24.00000 22.22807 7.38% 30.7 20s Explored 10415 nodes (318533 simplex iterations) in 20.10 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%