current bounds on the number of colors: 0 -- 182 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 01:55:51 2012 Optimize a model with 74802 rows, 17382 columns and 240422 nonzeros Presolve time: 0.24s Presolved: 74802 rows, 17382 columns, 240422 nonzeros Variable types: 0 continuous, 17382 integer (17382 binary) Root relaxation: objective 0.000000e+00, 703 iterations, 0.06 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 (1152 simplex iterations) in 0.42 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 -- 91 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 01:55:52 2012 Optimize a model with 37082 rows, 9010 columns and 118890 nonzeros Presolve time: 0.15s Presolved: 37082 rows, 9010 columns, 118890 nonzeros Variable types: 0 continuous, 9010 integer (9010 binary) Root relaxation: objective 0.000000e+00, 472 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 (817 simplex iterations) in 0.22 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 -- 45 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 01:55:53 2012 Optimize a model with 18222 rows, 4824 columns and 58124 nonzeros Presolve time: 0.07s Presolved: 18222 rows, 4824 columns, 58124 nonzeros Variable types: 0 continuous, 4824 integer (4824 binary) Root relaxation: objective 0.000000e+00, 371 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 (848 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 -- 22 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 01:55:53 2012 Optimize a model with 9202 rows, 2822 columns and 29062 nonzeros Presolve time: 0.03s Presolved: 9202 rows, 2822 columns, 29062 nonzeros Variable types: 0 continuous, 2822 integer (2822 binary) Root relaxation: objective 0.000000e+00, 381 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 (702 simplex iterations) in 0.05 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 01:55:53 2012 Optimize a model with 4282 rows, 1730 columns and 13210 nonzeros Presolve time: 0.01s Presolved: 4282 rows, 1730 columns, 13210 nonzeros Variable types: 0 continuous, 1730 integer (1730 binary) Root relaxation: objective 0.000000e+00, 421 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 0 104 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (2916 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 01:55:54 2012 Optimize a model with 1822 rows, 1184 columns and 5284 nonzeros Presolve removed 182 rows and 182 columns Presolve time: 0.00s Presolved: 1640 rows, 1002 columns, 4920 nonzeros Variable types: 0 continuous, 1002 integer (1002 binary) Root relaxation: objective 0.000000e+00, 191 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 182 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (794 simplex iterations) in 0.02 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: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 01:55:54 2012 Optimize a model with 2642 rows, 1366 columns and 7926 nonzeros Presolve time: 0.01s Presolved: 2642 rows, 1366 columns, 7926 nonzeros Variable types: 0 continuous, 1366 integer (1366 binary) Root relaxation: objective 0.000000e+00, 419 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 0 356 - 0.00000 - - 0s 0 0 0.00000 0 360 - 0.00000 - - 0s 0 0 0.00000 0 484 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Cutting planes: Gomory: 42 Zero half: 955 Explored 0 nodes (7582 simplex iterations) in 0.99 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 01:55:55 2012 Optimize a model with 3462 rows, 1548 columns and 10568 nonzeros Presolve time: 0.01s Presolved: 3462 rows, 1548 columns, 10568 nonzeros Variable types: 0 continuous, 1548 integer (1548 binary) Root relaxation: objective 0.000000e+00, 404 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 0 348 - 0.00000 - - 0s 0 0 0.00000 0 348 - 0.00000 - - 0s 0 0 0.00000 0 346 - 0.00000 - - 0s 0 0 0.00000 0 437 - 0.00000 - - 1s 0 0 0.00000 0 328 - 0.00000 - - 1s 0 0 0.00000 0 328 - 0.00000 - - 1s 0 0 0.00000 0 388 - 0.00000 - - 2s 0 0 0.00000 0 391 - 0.00000 - - 2s 0 0 0.00000 0 391 - 0.00000 - - 3s 0 2 0.00000 0 391 - 0.00000 - - 3s 204 20 0.00000 15 294 - 0.00000 - 128 5s 612 25 0.00000 10 322 - 0.00000 - 125 10s 617 29 0.00000 6 414 - 0.00000 - 124 15s 623 33 0.00000 5 393 - 0.00000 - 122 20s 820 27 0.00000 16 378 - 0.00000 - 208 25s 1086 23 0.00000 21 319 - 0.00000 - 219 30s 1388 23 0.00000 22 362 - 0.00000 - 220 35s Cutting planes: Gomory: 1 Zero half: 17 Explored 1534 nodes (367938 simplex iterations) in 37.79 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - optimal solution found: number of colors: 5