Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:25:56 2012 Optimize a model with 587 rows, 522 columns and 1987 nonzeros Presolve removed 0 rows and 12 columns Presolve time: 0.00s Presolved: 587 rows, 510 columns, 1975 nonzeros Variable types: 0 continuous, 510 integer (509 binary) Found heuristic solution: objective 110.0000000 Root relaxation: objective 0.000000e+00, 279 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 0 210 110.00000 0.00000 100% - 0s H 0 0 96.0000000 0.00000 100% - 0s H 0 0 90.0000000 0.00000 100% - 0s H 0 0 88.0000000 0.00000 100% - 0s 0 0 0.29799 0 212 88.00000 0.29799 100% - 0s H 0 0 86.0000000 0.29799 100% - 0s 0 0 0.92294 0 215 86.00000 0.92294 98.9% - 0s H 0 0 81.0000000 0.92294 98.9% - 0s 0 0 0.92389 0 216 81.00000 0.92389 98.9% - 0s 0 0 0.92389 0 216 81.00000 0.92389 98.9% - 0s H 0 0 80.0000000 0.92389 98.8% - 0s H 0 0 48.0000000 0.92389 98.1% - 0s 0 2 0.92756 0 216 48.00000 0.92756 98.1% - 0s H 27 27 43.0000000 1.00000 97.7% 56.3 0s H 81 68 31.0000000 1.00000 96.8% 30.3 0s H 108 82 30.0000000 1.00000 96.7% 33.5 0s H 135 87 28.0000000 1.00000 96.4% 29.3 0s H 234 152 26.0000000 1.11015 95.7% 32.0 0s H 1017 407 25.0000000 7.54054 69.8% 35.4 2s * 1209 359 33 24.0000000 10.37278 56.8% 35.0 2s 2446 346 cutoff 25 24.00000 15.06780 37.2% 33.6 5s * 3195 307 30 23.0000000 16.37234 28.8% 33.6 6s Explored 4438 nodes (147179 simplex iterations) in 8.79 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.300000000000e+01, best bound 2.300000000000e+01, gap 0.0%