current bounds on the number of colors: 0 -- 195 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 07:06:34 2012 Optimize a model with 90308 rows, 19844 columns and 289254 nonzeros Presolve time: 0.29s Presolved: 90308 rows, 19844 columns, 289254 nonzeros Variable types: 0 continuous, 19844 integer (19844 binary) Root relaxation: objective 0.000000e+00, 684 iterations, 0.07 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 (1085 simplex iterations) in 0.49 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 -- 97 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 07:06:35 2012 Optimize a model with 44787 rows, 10289 columns and 143136 nonzeros Presolve time: 0.16s Presolved: 44787 rows, 10289 columns, 143136 nonzeros Variable types: 0 continuous, 10289 integer (10289 binary) Root relaxation: objective 0.000000e+00, 509 iterations, 0.03 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 (1115 simplex iterations) in 0.28 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 -- 48 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 07:06:36 2012 Optimize a model with 22491 rows, 5609 columns and 71568 nonzeros Presolve time: 0.09s Presolved: 22491 rows, 5609 columns, 71568 nonzeros Variable types: 0 continuous, 5609 integer (5609 binary) Root relaxation: objective 0.000000e+00, 412 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 (775 simplex iterations) in 0.13 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 -- 24 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 07:06:37 2012 Optimize a model with 11343 rows, 3269 columns and 35784 nonzeros Presolve time: 0.04s Presolved: 11343 rows, 3269 columns, 35784 nonzeros Variable types: 0 continuous, 3269 integer (3269 binary) Root relaxation: objective 0.000000e+00, 416 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 (1029 simplex iterations) in 0.08 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 -- 12 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 07:06:37 2012 Optimize a model with 5769 rows, 2099 columns and 17892 nonzeros Presolve time: 0.02s Presolved: 5769 rows, 2099 columns, 17892 nonzeros Variable types: 0 continuous, 2099 integer (2099 binary) Root relaxation: objective 0.000000e+00, 435 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 (1145 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 07:06:37 2012 Optimize a model with 2982 rows, 1514 columns and 8946 nonzeros Presolve time: 0.01s Presolved: 2982 rows, 1514 columns, 8946 nonzeros Variable types: 0 continuous, 1514 integer (1514 binary) Root relaxation: objective 0.000000e+00, 438 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 0 388 - 0.00000 - - 0s 0 0 0.00000 0 390 - 0.00000 - - 0s 0 0 0.00000 0 512 - 0.00000 - - 1s 0 0 0.00000 0 529 - 0.00000 - - 1s 0 0 0.00000 0 530 - 0.00000 - - 1s 0 0 0.00000 0 533 - 0.00000 - - 2s 0 0 0.00000 0 525 - 0.00000 - - 3s 0 0 infeasible 0 - 0.10000 - - 3s Cutting planes: Zero half: 1205 Explored 0 nodes (19265 simplex iterations) in 3.92 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 07:06:41 2012 Optimize a model with 3911 rows, 1709 columns and 11928 nonzeros Presolve time: 0.01s Presolved: 3911 rows, 1709 columns, 11928 nonzeros Variable types: 0 continuous, 1709 integer (1709 binary) Root relaxation: objective 0.000000e+00, 430 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 0 380 - 0.00000 - - 0s 0 0 0.00000 0 374 - 0.00000 - - 0s 0 0 0.00000 0 370 - 0.00000 - - 0s 0 0 0.00000 0 404 - 0.00000 - - 1s 0 0 0.00000 0 366 - 0.00000 - - 1s 0 0 0.00000 0 364 - 0.00000 - - 2s 0 0 0.00000 0 364 - 0.00000 - - 2s 0 0 0.00000 0 364 - 0.00000 - - 2s 0 0 0.00000 0 360 - 0.00000 - - 3s 0 0 0.00000 0 350 - 0.00000 - - 3s 0 0 0.00000 0 356 - 0.00000 - - 4s 0 0 0.00000 0 356 - 0.00000 - - 4s 0 2 0.00000 0 356 - 0.00000 - - 5s 532 72 infeasible 19 - 0.00000 - 138 10s 607 82 0.00000 13 368 - 0.00000 - 130 15s 611 85 0.00000 11 339 - 0.00000 - 129 22s 614 87 0.00000 9 314 - 0.00000 - 129 26s 617 89 0.00000 19 294 - 0.00000 - 128 30s 866 21 infeasible 26 - 0.00000 - 227 35s 1241 45 0.00000 29 336 - 0.00000 - 218 40s 1594 20 infeasible 28 - 0.00000 - 217 45s 1892 38 0.00000 30 330 - 0.00000 - 218 50s 2181 31 infeasible 28 - 0.00000 - 223 55s 2464 16 infeasible 29 - 0.00000 - 226 60s 2711 11 0.00000 25 334 - 0.00000 - 230 65s Cutting planes: Gomory: 1 Zero half: 16 Explored 2935 nodes (713865 simplex iterations) in 68.68 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - current bounds on the number of colors: 4 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 07:07:50 2012 Optimize a model with 4840 rows, 1904 columns and 14910 nonzeros Presolve time: 0.01s Presolved: 4840 rows, 1904 columns, 14910 nonzeros Variable types: 0 continuous, 1904 integer (1904 binary) Root relaxation: objective 0.000000e+00, 447 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 0 368 - 0.00000 - - 0s 0 0 0.00000 0 318 - 0.00000 - - 0s * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (7329 simplex iterations) in 0.67 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% optimal solution found: number of colors: 5