Gurobi 5.0.1 (linux64) logging started Sun Nov 18 02:12:15 2012 Optimize a model with 188 rows, 437 columns and 437 nonzeros Model has 374 quadratic constraints Presolve time: 2.18s Presolved: 188 rows, 437 columns, 437 nonzeros Variable types: 374 continuous, 63 integer (63 binary) Root relaxation: objective 0.000000e+00, 31 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 97.0000000 - - - 2s 0 0 0.00000 0 29 97.00000 0.00000 100% - 2s 0 0 0.00000 0 44 97.00000 0.00000 100% - 2s 0 0 0.00000 0 44 97.00000 0.00000 100% - 2s 0 2 0.00000 0 44 97.00000 0.00000 100% - 2s H 54 54 58.0000000 4.92453 91.5% 37.5 2s * 59 57 34 57.0000000 4.92453 91.4% 35.1 2s H 111 102 56.0000000 7.13436 87.3% 31.1 2s * 112 96 32 54.0000000 7.13436 86.8% 30.9 2s H 188 145 51.0000000 8.47454 83.4% 32.9 2s H 200 147 50.0000000 8.47454 83.1% 31.8 2s * 203 139 26 49.0000000 8.47454 82.7% 31.5 2s 1210 601 46.00000 54 236 49.00000 17.27438 64.7% 40.2 5s * 2489 1091 63 48.0000000 22.07143 54.0% 30.3 6s H 2520 1057 47.0000000 22.23598 52.7% 30.2 6s 4686 1948 36.80882 43 250 47.00000 27.14286 42.2% 25.1 10s 5251 2166 43.69388 45 254 47.00000 27.95818 40.5% 24.4 15s 8060 2890 40.32876 38 257 47.00000 30.52941 35.0% 22.4 20s 10993 3466 39.44000 38 267 47.00000 32.37500 31.1% 21.5 25s *11608 3479 48 46.0000000 32.63636 29.1% 21.2 25s H12675 3439 45.0000000 33.16667 26.3% 21.0 27s 14612 3569 41.61538 49 262 45.00000 34.12903 24.2% 20.6 30s 18995 3579 39.14706 42 248 45.00000 36.37500 19.2% 20.2 35s 22158 3331 cutoff 43 45.00000 37.72414 16.2% 19.9 40s 26660 2351 42.96939 44 247 45.00000 39.69565 11.8% 19.6 45s Explored 31194 nodes (592700 simplex iterations) in 48.94 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.500000000005e+01, best bound 4.500000000005e+01, gap 0.0%