Gurobi 5.0.1 (linux64) logging started Sun Nov 18 08:26:09 2012 Optimize a model with 615 rows, 544 columns and 2079 nonzeros Presolve removed 0 rows and 12 columns Presolve time: 0.00s Presolved: 615 rows, 532 columns, 2067 nonzeros Variable types: 0 continuous, 532 integer (531 binary) Found heuristic solution: objective 115.0000000 Root relaxation: objective 0.000000e+00, 314 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 0 210 115.00000 0.00000 100% - 0s H 0 0 101.0000000 0.00000 100% - 0s H 0 0 95.0000000 0.00000 100% - 0s H 0 0 87.0000000 0.00000 100% - 0s 0 0 0.40217 0 212 87.00000 0.40217 100% - 0s H 0 0 85.0000000 0.40217 100% - 0s 0 0 0.82449 0 213 85.00000 0.82449 99.0% - 0s H 0 0 78.0000000 0.82449 98.9% - 0s 0 0 0.82475 0 216 78.00000 0.82475 98.9% - 0s 0 0 0.82475 0 214 78.00000 0.82475 98.9% - 0s H 0 0 73.0000000 0.82475 98.9% - 0s H 0 0 44.0000000 0.82475 98.1% - 0s 0 2 0.82564 0 214 44.00000 0.82564 98.1% - 0s * 77 63 47 29.0000000 1.00000 96.6% 24.3 0s * 251 189 16 28.0000000 1.00000 96.4% 37.2 0s H 543 286 27.0000000 4.53846 83.2% 37.1 1s 2528 840 cutoff 29 27.00000 14.69531 45.6% 28.8 5s 5351 1682 23.43750 24 217 27.00000 17.31081 35.9% 26.6 10s H 8193 2040 26.0000000 18.67769 28.2% 25.8 14s 8264 2036 cutoff 26 26.00000 18.69231 28.1% 25.8 15s 11346 2155 cutoff 26 26.00000 19.66434 24.4% 25.6 20s 14796 2029 23.72619 25 208 26.00000 20.48000 21.2% 25.0 25s 18227 1727 24.40741 28 208 26.00000 21.17293 18.6% 25.0 30s 21409 1195 cutoff 26 26.00000 22.06780 15.1% 25.1 35s *23408 256 31 25.0000000 23.40385 6.38% 25.1 37s Explored 23691 nodes (594243 simplex iterations) in 38.45 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.500000000000e+01, best bound 2.500000000000e+01, gap 0.0%