current bounds on the number of colors: 0 -- 133 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:36:01 2012 Optimize a model with 28843 rows, 9213 columns and 94908 nonzeros Presolve time: 0.14s Presolved: 28843 rows, 9213 columns, 94908 nonzeros Variable types: 0 continuous, 9213 integer (9213 binary) Root relaxation: objective 0.000000e+00, 403 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 (667 simplex iterations) in 0.20 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 -- 66 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:36:01 2012 Optimize a model with 14488 rows, 4824 columns and 47454 nonzeros Presolve time: 0.07s Presolved: 14488 rows, 4824 columns, 47454 nonzeros Variable types: 0 continuous, 4824 integer (4824 binary) Root relaxation: objective 0.000000e+00, 352 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 (623 simplex iterations) in 0.10 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 -- 33 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:36:02 2012 Optimize a model with 7093 rows, 2563 columns and 23008 nonzeros Presolve time: 0.03s Presolved: 7093 rows, 2563 columns, 23008 nonzeros Variable types: 0 continuous, 2563 integer (2563 binary) Root relaxation: objective 0.000000e+00, 274 iterations, 0.00 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 (482 simplex iterations) in 0.04 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 -- 16 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:36:02 2012 Optimize a model with 3613 rows, 1499 columns and 11504 nonzeros Presolve time: 0.01s Presolved: 3613 rows, 1499 columns, 11504 nonzeros Variable types: 0 continuous, 1499 integer (1499 binary) Root relaxation: objective 0.000000e+00, 297 iterations, 0.00 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 (546 simplex iterations) in 0.02 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 -- 8 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:36:02 2012 Optimize a model with 1873 rows, 967 columns and 5752 nonzeros Presolve time: 0.00s Presolved: 1873 rows, 967 columns, 5752 nonzeros Variable types: 0 continuous, 967 integer (967 binary) Root relaxation: objective 0.000000e+00, 300 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 0 183 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (2346 simplex iterations) in 0.11 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 -- 4 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:36:02 2012 Optimize a model with 1003 rows, 701 columns and 2876 nonzeros Presolve removed 133 rows and 133 columns Presolve time: 0.00s Presolved: 870 rows, 568 columns, 2610 nonzeros Variable types: 0 continuous, 568 integer (568 binary) Root relaxation: objective 0.000000e+00, 146 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 0 133 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (542 simplex iterations) in 0.01 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 -- 4 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:36:02 2012 Optimize a model with 1438 rows, 834 columns and 4314 nonzeros Presolve time: 0.00s Presolved: 1438 rows, 834 columns, 4314 nonzeros Variable types: 0 continuous, 834 integer (834 binary) Root relaxation: objective 0.000000e+00, 301 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 0 252 - 0.00000 - - 0s 0 0 0.00000 0 248 - 0.00000 - - 0s 0 0 0.00000 0 250 - 0.00000 - - 0s 0 0 0.00000 0 342 - 0.00000 - - 0s 0 0 0.00000 0 305 - 0.00000 - - 0s 0 0 0.00000 0 311 - 0.00000 - - 0s 0 0 0.00000 0 345 - 0.00000 - - 0s 0 0 0.00000 0 336 - 0.00000 - - 0s 0 0 0.00000 0 339 - 0.00000 - - 1s 0 0 0.00000 0 339 - 0.00000 - - 1s 0 2 0.00000 0 339 - 0.00000 - - 1s Cutting planes: Zero half: 41 Explored 5 nodes (14456 simplex iterations) in 1.33 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - optimal solution found: number of colors: 4