Gurobi 5.0.1 (linux64) logging started Sat Jan 26 21:30:13 2013 Optimize a model with 30 rows, 100 columns and 3000 nonzeros Presolve time: 0.01s Presolved: 30 rows, 100 columns, 3000 nonzeros Variable types: 0 continuous, 100 integer (100 binary) Found heuristic solution: objective 57788.000000 Root relaxation: objective 6.048682e+04, 53 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 60486.8249 0 20 57788.0000 60486.8249 4.67% - 0s H 0 0 59813.000000 60486.8249 1.13% - 0s 0 0 60478.6888 0 22 59813.0000 60478.6888 1.11% - 0s 0 0 60473.9406 0 20 59813.0000 60473.9406 1.11% - 0s 0 0 60472.6593 0 22 59813.0000 60472.6593 1.10% - 0s 0 0 60471.7542 0 23 59813.0000 60471.7542 1.10% - 0s H 0 0 59944.000000 60471.7542 0.88% - 0s 0 2 60468.5728 0 23 59944.0000 60468.5728 0.88% - 0s H 6357 3776 59986.000000 60353.7535 0.61% 5.9 0s H 8320 4934 59992.000000 60341.2394 0.58% 5.9 1s H17399 9458 60026.000000 60305.9192 0.47% 6.0 2s 40805 18751 60105.2826 30 23 60026.0000 60260.3700 0.39% 6.0 6s 59926 22548 60102.9229 52 9 60026.0000 60260.3700 0.39% 6.0 10s H63539 21952 60027.000000 60260.3700 0.39% 6.0 10s 103056 25299 60056.0450 43 11 60027.0000 60230.2677 0.34% 6.0 15s 148274 36060 60196.4354 54 11 60027.0000 60200.6574 0.29% 5.9 20s 194533 43243 60064.2190 54 9 60027.0000 60179.6500 0.25% 5.8 25s 241180 47283 60066.2297 51 8 60027.0000 60163.0797 0.23% 5.7 30s 288467 48633 60049.4772 44 13 60027.0000 60148.6765 0.20% 5.7 35s 336549 47255 cutoff 58 60027.0000 60134.8432 0.18% 5.6 40s 385196 42720 60085.4833 43 14 60027.0000 60120.9803 0.16% 5.6 45s 434772 33772 60061.4247 45 9 60027.0000 60104.8039 0.13% 5.5 50s 485124 16679 cutoff 47 60027.0000 60078.9113 0.09% 5.4 55s Cutting planes: Gomory: 13 Explored 509329 nodes (2731916 simplex iterations) in 57.18 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.002700000000e+04, best bound 6.003299989862e+04, gap 0.0100%