current bounds on the number of colors: 0 -- 189 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:46:55 2012 Optimize a model with 85259 rows, 18671 columns and 272976 nonzeros Presolve time: 0.27s Presolved: 85259 rows, 18671 columns, 272976 nonzeros Variable types: 0 continuous, 18671 integer (18671 binary) Root relaxation: objective 0.000000e+00, 759 iterations, 0.08 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1160 simplex iterations) in 0.48 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 94 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:46:56 2012 Optimize a model with 42724 rows, 9788 columns and 136488 nonzeros Presolve time: 0.15s Presolved: 42724 rows, 9788 columns, 136488 nonzeros Variable types: 0 continuous, 9788 integer (9788 binary) Root relaxation: objective 0.000000e+00, 649 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1061 simplex iterations) in 0.26 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 47 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:46:57 2012 Optimize a model with 21004 rows, 5252 columns and 66792 nonzeros Presolve time: 0.08s Presolved: 21004 rows, 5252 columns, 66792 nonzeros Variable types: 0 continuous, 5252 integer (5252 binary) Root relaxation: objective 0.000000e+00, 400 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (734 simplex iterations) in 0.12 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 23 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:46:57 2012 Optimize a model with 10144 rows, 2984 columns and 31944 nonzeros Presolve time: 0.03s Presolved: 10144 rows, 2984 columns, 31944 nonzeros Variable types: 0 continuous, 2984 integer (2984 binary) Root relaxation: objective 0.000000e+00, 395 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (777 simplex iterations) in 0.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:46:57 2012 Optimize a model with 4714 rows, 1850 columns and 14520 nonzeros Presolve time: 0.01s Presolved: 4714 rows, 1850 columns, 14520 nonzeros Variable types: 0 continuous, 1850 integer (1850 binary) Root relaxation: objective 0.000000e+00, 408 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 0 342 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (2129 simplex iterations) in 0.10 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:46:57 2012 Optimize a model with 1999 rows, 1283 columns and 5808 nonzeros Presolve removed 189 rows and 189 columns Presolve time: 0.01s Presolved: 1810 rows, 1094 columns, 5430 nonzeros Variable types: 0 continuous, 1094 integer (1094 binary) Root relaxation: objective 0.000000e+00, 204 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 0 189 - 0.00000 - - 0s Explored 0 nodes (812 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - current bounds on the number of colors: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:46:58 2012 Optimize a model with 2904 rows, 1472 columns and 8712 nonzeros Presolve time: 0.01s Presolved: 2904 rows, 1472 columns, 8712 nonzeros Variable types: 0 continuous, 1472 integer (1472 binary) Root relaxation: objective 0.000000e+00, 418 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 0 372 - 0.00000 - - 0s 0 0 0.00000 0 376 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4630 simplex iterations) in 0.57 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - current bounds on the number of colors: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:46:58 2012 Optimize a model with 3809 rows, 1661 columns and 11616 nonzeros Presolve time: 0.01s Presolved: 3809 rows, 1661 columns, 11616 nonzeros Variable types: 0 continuous, 1661 integer (1661 binary) Root relaxation: objective 0.000000e+00, 421 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 0 303 - 0.00000 - - 0s 0 0 0.00000 0 244 - 0.00000 - - 0s 0 0 0.00000 0 360 - 0.00000 - - 1s 0 0 0.00000 0 358 - 0.00000 - - 1s 0 0 0.00000 0 507 - 0.00000 - - 1s 0 0 0.00000 0 353 - 0.00000 - - 2s 0 0 0.00000 0 344 - 0.00000 - - 2s 0 0 0.00000 0 340 - 0.00000 - - 3s 0 0 0.00000 0 334 - 0.00000 - - 3s 0 0 0.00000 0 334 - 0.00000 - - 4s 0 0 0.00000 0 336 - 0.00000 - - 4s 0 0 0.00000 0 302 - 0.00000 - - 5s 0 0 0.00000 0 300 - 0.00000 - - 5s 0 0 0.00000 0 306 - 0.00000 - - 6s 0 0 0.00000 0 298 - 0.00000 - - 6s 0 0 0.00000 0 292 - 0.00000 - - 7s 0 0 0.00000 0 290 - 0.00000 - - 7s 0 0 0.00000 0 280 - 0.00000 - - 8s 0 0 0.00000 0 290 - 0.00000 - - 8s 0 0 0.00000 0 290 - 0.00000 - - 8s 0 2 0.00000 0 290 - 0.00000 - - 9s 26 24 infeasible 15 - 0.00000 - 281 10s 701 76 0.00000 3 244 - 0.00000 - 123 15s 708 81 0.00000 10 402 - 0.00000 - 122 21s 711 83 0.00000 16 410 - 0.00000 - 122 25s 751 91 0.00000 25 340 - 0.00000 - 181 30s 1042 11 infeasible 22 - 0.00000 - 200 35s 1347 14 infeasible 24 - 0.00000 - 207 40s Cutting planes: Zero half: 19 Explored 1452 nodes (376517 simplex iterations) in 41.90 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - optimal solution found: number of colors: 5