current bounds on the number of colors: 0 -- 202 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 10:08:45 2012 Optimize a model with 105646 rows, 21446 columns and 336734 nonzeros Presolve time: 0.35s Presolved: 105646 rows, 21446 columns, 336734 nonzeros Variable types: 0 continuous, 21446 integer (21446 binary) Root relaxation: objective 0.000000e+00, 768 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 (1222 simplex iterations) in 0.58 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 10:08:47 2012 Optimize a model with 52402 rows, 11144 columns and 166700 nonzeros Presolve time: 0.17s Presolved: 52402 rows, 11144 columns, 166700 nonzeros Variable types: 0 continuous, 11144 integer (11144 binary) Root relaxation: objective 0.000000e+00, 636 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 (1087 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 -- 50 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 10:08:48 2012 Optimize a model with 26302 rows, 6094 columns and 83350 nonzeros Presolve time: 0.11s Presolved: 26302 rows, 6094 columns, 83350 nonzeros Variable types: 0 continuous, 6094 integer (6094 binary) Root relaxation: objective 0.000000e+00, 485 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 (879 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 10:08:48 2012 Optimize a model with 12730 rows, 3468 columns and 40008 nonzeros Presolve time: 0.04s Presolved: 12730 rows, 3468 columns, 40008 nonzeros Variable types: 0 continuous, 3468 integer (3468 binary) Root relaxation: objective 0.000000e+00, 420 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 (801 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 10:08:48 2012 Optimize a model with 6466 rows, 2256 columns and 20004 nonzeros Presolve time: 0.02s Presolved: 6466 rows, 2256 columns, 20004 nonzeros Variable types: 0 continuous, 2256 integer (2256 binary) Root relaxation: objective 0.000000e+00, 449 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 (2399 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 10:08:49 2012 Optimize a model with 3334 rows, 1650 columns and 10002 nonzeros Presolve time: 0.01s Presolved: 3334 rows, 1650 columns, 10002 nonzeros Variable types: 0 continuous, 1650 integer (1650 binary) Root relaxation: objective 0.000000e+00, 456 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 0 400 - 0.00000 - - 0s 0 0 0.00000 0 398 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (5705 simplex iterations) in 0.80 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 10:08:50 2012 Optimize a model with 4378 rows, 1852 columns and 13336 nonzeros Presolve time: 0.01s Presolved: 4378 rows, 1852 columns, 13336 nonzeros Variable types: 0 continuous, 1852 integer (1852 binary) Root relaxation: objective 0.000000e+00, 453 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 0 400 - 0.00000 - - 0s 0 0 0.00000 0 376 - 0.00000 - - 0s 0 0 0.00000 0 378 - 0.00000 - - 1s 0 0 0.00000 0 474 - 0.00000 - - 1s 0 0 0.00000 0 376 - 0.00000 - - 2s 0 0 0.00000 0 376 - 0.00000 - - 2s 0 0 0.00000 0 364 - 0.00000 - - 3s 0 0 0.00000 0 364 - 0.00000 - - 4s 0 0 0.00000 0 354 - 0.00000 - - 4s 0 0 0.00000 0 348 - 0.00000 - - 5s 0 0 0.00000 0 348 - 0.00000 - - 6s 0 0 0.00000 0 348 - 0.00000 - - 6s 0 2 0.00000 0 347 - 0.00000 - - 7s 158 30 infeasible 20 - 0.00000 - 201 10s 525 61 0.00000 25 352 - 0.00000 - 181 15s 804 64 0.00000 13 542 - 0.00000 - 176 20s 806 65 0.00000 13 460 - 0.00000 - 175 27s 808 67 0.00000 16 467 - 0.00000 - 175 33s 809 67 0.00000 15 473 - 0.00000 - 174 35s 813 70 0.00000 20 471 - 0.00000 - 174 40s 913 55 0.00000 24 378 - 0.00000 - 239 45s 1047 16 0.00000 25 476 - 0.00000 - 254 50s 1189 16 infeasible 27 - 0.00000 - 263 55s 1334 11 infeasible 27 - 0.00000 - 271 60s Cutting planes: Zero half: 39 Explored 1374 nodes (426099 simplex iterations) in 61.89 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 10:09:52 2012 Optimize a model with 5422 rows, 2054 columns and 16670 nonzeros Presolve time: 0.01s Presolved: 5422 rows, 2054 columns, 16670 nonzeros Variable types: 0 continuous, 2054 integer (2054 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 0.00000 0 382 - 0.00000 - - 0s 0 0 0.00000 0 380 - 0.00000 - - 0s 0 0 0.00000 0 384 - 0.00000 - - 1s H 0 0 0.0000000 0.00000 0.0% - 1s Explored 0 nodes (12346 simplex iterations) in 1.39 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