current bounds on the number of colors: 0 -- 203 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 10:18:09 2012 Optimize a model with 110697 rows, 21597 columns and 351985 nonzeros Presolve time: 0.37s Presolved: 110697 rows, 21597 columns, 351985 nonzeros Variable types: 0 continuous, 21597 integer (21597 binary) Root relaxation: objective 0.000000e+00, 539 iterations, 0.14 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 (972 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% current bounds on the number of colors: 0 -- 101 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 10:18:11 2012 Optimize a model with 54903 rows, 11244 columns and 174250 nonzeros Presolve time: 0.17s Presolved: 54903 rows, 11244 columns, 174250 nonzeros Variable types: 0 continuous, 11244 integer (11244 binary) Root relaxation: objective 0.000000e+00, 573 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 (1032 simplex iterations) in 0.27 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 -- 50 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 10:18:12 2012 Optimize a model with 27553 rows, 6169 columns and 87125 nonzeros Presolve time: 0.11s Presolved: 27553 rows, 6169 columns, 87125 nonzeros Variable types: 0 continuous, 6169 integer (6169 binary) Root relaxation: objective 0.000000e+00, 469 iterations, 0.02 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 (849 simplex iterations) in 0.16 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 -- 25 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 10:18:12 2012 Optimize a model with 13331 rows, 3530 columns and 41820 nonzeros Presolve time: 0.04s Presolved: 13331 rows, 3530 columns, 41820 nonzeros Variable types: 0 continuous, 3530 integer (3530 binary) Root relaxation: objective 0.000000e+00, 425 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 (816 simplex iterations) in 0.07 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 10:18:12 2012 Optimize a model with 6767 rows, 2312 columns and 20910 nonzeros Presolve time: 0.02s Presolved: 6767 rows, 2312 columns, 20910 nonzeros Variable types: 0 continuous, 2312 integer (2312 binary) Root relaxation: objective 0.000000e+00, 434 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 (1802 simplex iterations) in 0.09 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 10:18:12 2012 Optimize a model with 3485 rows, 1703 columns and 10455 nonzeros Presolve time: 0.01s Presolved: 3485 rows, 1703 columns, 10455 nonzeros Variable types: 0 continuous, 1703 integer (1703 binary) Root relaxation: objective 0.000000e+00, 448 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 0 406 - 0.00000 - - 0s 0 0 0.00000 0 402 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (6351 simplex iterations) in 0.95 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 10:18:13 2012 Optimize a model with 4579 rows, 1906 columns and 13940 nonzeros Presolve time: 0.01s Presolved: 4579 rows, 1906 columns, 13940 nonzeros Variable types: 0 continuous, 1906 integer (1906 binary) Root relaxation: objective 0.000000e+00, 457 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 0 402 - 0.00000 - - 0s 0 0 0.00000 0 396 - 0.00000 - - 0s 0 0 0.00000 0 387 - 0.00000 - - 1s 0 0 0.00000 0 397 - 0.00000 - - 1s 0 0 0.00000 0 372 - 0.00000 - - 2s 0 0 0.00000 0 372 - 0.00000 - - 3s 0 0 0.00000 0 377 - 0.00000 - - 4s 0 0 0.00000 0 368 - 0.00000 - - 5s 0 0 0.00000 0 383 - 0.00000 - - 6s 0 0 0.00000 0 364 - 0.00000 - - 6s 0 0 0.00000 0 358 - 0.00000 - - 7s 0 0 0.00000 0 354 - 0.00000 - - 8s 0 0 0.00000 0 359 - 0.00000 - - 9s 0 0 0.00000 0 358 - 0.00000 - - 10s 0 2 0.00000 0 356 - 0.00000 - - 11s 107 33 0.00000 19 398 - 0.00000 - 232 15s 360 38 0.00000 14 396 - 0.00000 - 207 20s 580 34 infeasible 11 - 0.00000 - 210 25s 605 51 0.00000 10 378 - 0.00000 - 207 32s 607 52 0.00000 5 370 - 0.00000 - 207 36s 609 53 0.00000 5 387 - 0.00000 - 206 42s 611 55 0.00000 16 373 - 0.00000 - 205 46s 646 60 0.00000 23 376 - 0.00000 - 301 50s 757 44 infeasible 26 - 0.00000 - 311 55s 854 13 infeasible 23 - 0.00000 - 324 60s 959 18 infeasible 32 - 0.00000 - 330 65s 1070 11 0.00000 29 409 - 0.00000 - 334 70s Cutting planes: Gomory: 1 Zero half: 27 Explored 1142 nodes (455646 simplex iterations) in 74.01 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 10:19:28 2012 Optimize a model with 5673 rows, 2109 columns and 17425 nonzeros Presolve time: 0.02s Presolved: 5673 rows, 2109 columns, 17425 nonzeros Variable types: 0 continuous, 2109 integer (2109 binary) Root relaxation: objective 0.000000e+00, 455 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 0 384 - 0.00000 - - 0s 0 0 0.00000 0 360 - 0.00000 - - 0s 0 0 0.00000 0 488 - 0.00000 - - 1s 0 0 0.00000 0 502 - 0.00000 - - 1s 0 0 0.00000 0 485 - 0.00000 - - 2s 0 0 0.00000 0 430 - 0.00000 - - 3s * 0 0 0 0.0000000 0.00000 0.0% - 3s Cutting planes: Zero half: 170 Explored 0 nodes (23248 simplex iterations) in 3.75 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