Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:58:35 2012 Optimize a model with 757 rows, 124 columns and 1514 nonzeros Presolve removed 292 rows and 0 columns Presolve time: 0.00s Presolved: 465 rows, 124 columns, 1185 nonzeros Variable types: 0 continuous, 124 integer (124 binary) Found heuristic solution: objective 28.0000000 Root relaxation: objective 4.130113e+01, 297 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 41.30113 0 124 28.00000 41.30113 47.5% - 0s 0 0 40.84197 0 121 28.00000 40.84197 45.9% - 0s H 0 0 29.0000000 40.84197 40.8% - 0s 0 0 40.54616 0 120 29.00000 40.54616 39.8% - 0s H 0 0 30.0000000 40.54616 35.2% - 0s H 0 0 31.0000000 40.54616 30.8% - 0s 0 0 40.39086 0 123 31.00000 40.39086 30.3% - 0s 0 0 40.19759 0 122 31.00000 40.19759 29.7% - 0s 0 0 40.04245 0 122 31.00000 40.04245 29.2% - 0s 0 0 39.88838 0 120 31.00000 39.88838 28.7% - 0s H 0 0 32.0000000 39.88838 24.7% - 0s 0 0 39.84931 0 121 32.00000 39.84931 24.5% - 0s 0 0 39.82707 0 121 32.00000 39.82707 24.5% - 0s 0 0 39.80323 0 121 32.00000 39.80323 24.4% - 0s 0 0 39.76469 0 121 32.00000 39.76469 24.3% - 0s 0 0 39.74231 0 122 32.00000 39.74231 24.2% - 0s 0 0 39.68232 0 122 32.00000 39.68232 24.0% - 0s 0 0 39.60005 0 122 32.00000 39.60005 23.8% - 0s 0 0 39.50812 0 123 32.00000 39.50812 23.5% - 0s 0 0 39.45339 0 122 32.00000 39.45339 23.3% - 0s 0 0 39.44675 0 122 32.00000 39.44675 23.3% - 0s 0 0 39.44675 0 122 32.00000 39.44675 23.3% - 0s 0 2 39.44394 0 122 32.00000 39.44394 23.3% - 0s H 13 13 33.0000000 39.43726 19.5% 36.8 0s 614 162 36.72576 3 120 33.00000 37.08696 12.4% 30.7 5s Cutting planes: Gomory: 2 Clique: 1 Zero half: 49 Explored 2385 nodes (68299 simplex iterations) in 7.73 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.300000000000e+01, best bound 3.300000000000e+01, gap 0.0%