current bounds on the number of colors: 0 -- 212 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 14:15:18 2012 Optimize a model with 118190 rows, 23585 columns and 376406 nonzeros Presolve time: 0.41s Presolved: 118190 rows, 23585 columns, 376406 nonzeros Variable types: 0 continuous, 23585 integer (23585 binary) Root relaxation: objective 0.000000e+00, 555 iterations, 0.15 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 (1001 simplex iterations) in 0.72 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 -- 106 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 14:15:20 2012 Optimize a model with 59201 rows, 12349 columns and 188203 nonzeros Presolve time: 0.18s Presolved: 59201 rows, 12349 columns, 188203 nonzeros Variable types: 0 continuous, 12349 integer (12349 binary) Root relaxation: objective 0.000000e+00, 603 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 (1076 simplex iterations) in 0.30 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 -- 53 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 14:15:21 2012 Optimize a model with 29150 rows, 6625 columns and 92326 nonzeros Presolve time: 0.12s Presolved: 29150 rows, 6625 columns, 92326 nonzeros Variable types: 0 continuous, 6625 integer (6625 binary) Root relaxation: objective 0.000000e+00, 526 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 (961 simplex iterations) in 0.18 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 -- 26 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 14:15:22 2012 Optimize a model with 14681 rows, 3869 columns and 46163 nonzeros Presolve time: 0.05s Presolved: 14681 rows, 3869 columns, 46163 nonzeros Variable types: 0 continuous, 3869 integer (3869 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (855 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 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 14:15:22 2012 Optimize a model with 6890 rows, 2385 columns and 21306 nonzeros Presolve time: 0.02s Presolved: 6890 rows, 2385 columns, 21306 nonzeros Variable types: 0 continuous, 2385 integer (2385 binary) Root relaxation: objective 0.000000e+00, 450 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 70 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (3156 simplex iterations) in 0.18 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 14:15:22 2012 Optimize a model with 3551 rows, 1749 columns and 10653 nonzeros Presolve time: 0.01s Presolved: 3551 rows, 1749 columns, 10653 nonzeros Variable types: 0 continuous, 1749 integer (1749 binary) Root relaxation: objective 0.000000e+00, 473 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 0 424 - 0.00000 - - 0s 0 0 0.00000 0 422 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (6475 simplex iterations) in 0.92 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 14:15:23 2012 Optimize a model with 4664 rows, 1961 columns and 14204 nonzeros Presolve time: 0.01s Presolved: 4664 rows, 1961 columns, 14204 nonzeros Variable types: 0 continuous, 1961 integer (1961 binary) Root relaxation: objective 0.000000e+00, 458 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 0 404 - 0.00000 - - 0s 0 0 0.00000 0 368 - 0.00000 - - 0s 0 0 0.00000 0 390 - 0.00000 - - 1s 0 0 0.00000 0 479 - 0.00000 - - 1s 0 0 0.00000 0 401 - 0.00000 - - 2s 0 0 0.00000 0 372 - 0.00000 - - 3s 0 0 0.00000 0 376 - 0.00000 - - 4s 0 0 0.00000 0 364 - 0.00000 - - 5s 0 0 0.00000 0 364 - 0.00000 - - 5s 0 0 0.00000 0 410 - 0.00000 - - 6s 0 0 0.00000 0 410 - 0.00000 - - 6s 0 2 0.00000 0 410 - 0.00000 - - 7s 100 48 0.00000 22 433 - 0.00000 - 233 10s 449 55 0.00000 13 380 - 0.00000 - 185 15s 604 85 0.00000 19 587 - 0.00000 - 182 20s 606 86 0.00000 10 374 - 0.00000 - 181 26s 608 88 0.00000 15 360 - 0.00000 - 180 31s 610 89 0.00000 8 360 - 0.00000 - 180 36s 612 90 0.00000 17 340 - 0.00000 - 179 41s 615 92 0.00000 8 401 - 0.00000 - 178 45s 719 68 infeasible 19 - 0.00000 - 304 50s 870 28 0.00000 20 497 - 0.00000 - 306 55s 1024 11 infeasible 23 - 0.00000 - 310 60s 1164 15 0.00000 18 388 - 0.00000 - 315 65s 1298 11 0.00000 20 409 - 0.00000 - 319 70s Cutting planes: Zero half: 26 Explored 1374 nodes (491438 simplex iterations) in 73.03 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 14:16:36 2012 Optimize a model with 5777 rows, 2173 columns and 17755 nonzeros Presolve time: 0.02s Presolved: 5777 rows, 2173 columns, 17755 nonzeros Variable types: 0 continuous, 2173 integer (2173 binary) Root relaxation: objective 0.000000e+00, 461 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 0 382 - 0.00000 - - 0s 0 0 0.00000 0 464 - 0.00000 - - 1s 0 0 0.00000 0 492 - 0.00000 - - 1s 0 0 0.00000 0 429 - 0.00000 - - 2s H 0 0 0.0000000 0.00000 0.0% - 2s Cutting planes: Zero half: 4 Explored 0 nodes (17026 simplex iterations) in 2.59 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