current bounds on the number of colors: 0 -- 209 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 12:57:29 2012 Optimize a model with 115753 rows, 22847 columns and 368368 nonzeros Presolve time: 0.40s Presolved: 115753 rows, 22847 columns, 368368 nonzeros Variable types: 0 continuous, 22847 integer (22847 binary) Root relaxation: objective 0.000000e+00, 547 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 (977 simplex iterations) in 0.71 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 -- 104 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 12:57:31 2012 Optimize a model with 57981 rows, 11979 columns and 184184 nonzeros Presolve time: 0.18s Presolved: 57981 rows, 11979 columns, 184184 nonzeros Variable types: 0 continuous, 11979 integer (11979 binary) Root relaxation: objective 0.000000e+00, 677 iterations, 0.05 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 (1190 simplex iterations) in 0.32 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 -- 52 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 12:57:32 2012 Optimize a model with 29095 rows, 6545 columns and 92092 nonzeros Presolve time: 0.12s Presolved: 29095 rows, 6545 columns, 92092 nonzeros Variable types: 0 continuous, 6545 integer (6545 binary) Root relaxation: objective 0.000000e+00, 524 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 (982 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 12:57:33 2012 Optimize a model with 14652 rows, 3828 columns and 46046 nonzeros Presolve time: 0.05s Presolved: 14652 rows, 3828 columns, 46046 nonzeros Variable types: 0 continuous, 3828 integer (3828 binary) Root relaxation: objective 0.000000e+00, 431 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 (857 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 12:57:33 2012 Optimize a model with 6875 rows, 2365 columns and 21252 nonzeros Presolve time: 0.02s Presolved: 6875 rows, 2365 columns, 21252 nonzeros Variable types: 0 continuous, 2365 integer (2365 binary) Root relaxation: objective 0.000000e+00, 463 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 (2095 simplex iterations) in 0.15 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 12:57:33 2012 Optimize a model with 3542 rows, 1738 columns and 10626 nonzeros Presolve time: 0.01s Presolved: 3542 rows, 1738 columns, 10626 nonzeros Variable types: 0 continuous, 1738 integer (1738 binary) Root relaxation: objective 0.000000e+00, 470 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 0 352 - 0.00000 - - 0s 0 0 0.00000 0 489 - 0.00000 - - 0s 0 0 0.00000 0 584 - 0.00000 - - 1s 0 0 infeasible 0 - 0.10000 - - 1s Cutting planes: Gomory: 17 Zero half: 1495 Explored 0 nodes (11486 simplex iterations) in 1.87 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 12:57:35 2012 Optimize a model with 4653 rows, 1947 columns and 14168 nonzeros Presolve time: 0.01s Presolved: 4653 rows, 1947 columns, 14168 nonzeros Variable types: 0 continuous, 1947 integer (1947 binary) Root relaxation: objective 0.000000e+00, 471 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 0 414 - 0.00000 - - 0s 0 0 0.00000 0 408 - 0.00000 - - 0s 0 0 0.00000 0 402 - 0.00000 - - 1s 0 0 0.00000 0 573 - 0.00000 - - 1s 0 0 0.00000 0 376 - 0.00000 - - 2s 0 0 0.00000 0 370 - 0.00000 - - 3s 0 0 0.00000 0 366 - 0.00000 - - 4s 0 0 0.00000 0 370 - 0.00000 - - 4s 0 0 0.00000 0 374 - 0.00000 - - 5s 0 0 0.00000 0 370 - 0.00000 - - 6s 0 0 0.00000 0 377 - 0.00000 - - 6s 0 0 0.00000 0 370 - 0.00000 - - 7s 0 0 0.00000 0 377 - 0.00000 - - 8s 0 0 0.00000 0 377 - 0.00000 - - 8s 0 2 0.00000 0 377 - 0.00000 - - 10s 291 17 infeasible 12 - 0.00000 - 187 15s 604 34 0.00000 18 598 - 0.00000 - 154 20s 605 35 0.00000 16 514 - 0.00000 - 154 25s 607 36 0.00000 20 513 - 0.00000 - 153 32s 608 37 0.00000 11 518 - 0.00000 - 153 35s 610 38 0.00000 14 409 - 0.00000 - 152 41s 612 39 0.00000 14 446 - 0.00000 - 152 47s 617 43 0.00000 14 474 - 0.00000 - 246 50s 656 41 infeasible 23 - 0.00000 - 249 55s 759 25 0.00000 19 467 - 0.00000 - 264 60s 882 24 0.00000 20 458 - 0.00000 - 273 65s 1006 6 0.00000 19 388 - 0.00000 - 282 70s Cutting planes: Gomory: 1 Zero half: 22 Explored 1091 nodes (374310 simplex iterations) in 73.71 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 12:58:49 2012 Optimize a model with 5764 rows, 2156 columns and 17710 nonzeros Presolve time: 0.02s Presolved: 5764 rows, 2156 columns, 17710 nonzeros Variable types: 0 continuous, 2156 integer (2156 binary) Root relaxation: objective 0.000000e+00, 452 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 0 374 - 0.00000 - - 0s * 0 0 0 0.0000000 0.00000 0.0% - 1s Explored 0 nodes (12639 simplex iterations) in 1.47 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