current bounds on the number of colors: 0 -- 84 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:41:34 2012 Optimize a model with 16422 rows, 3917 columns and 52542 nonzeros Presolve time: 0.09s Presolved: 16422 rows, 3917 columns, 52542 nonzeros Variable types: 0 continuous, 3917 integer (3917 binary) Root relaxation: objective 0.000000e+00, 231 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 (434 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 -- 42 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:41:34 2012 Optimize a model with 8253 rows, 2153 columns and 26271 nonzeros Presolve time: 0.03s Presolved: 8253 rows, 2153 columns, 26271 nonzeros Variable types: 0 continuous, 2153 integer (2153 binary) Root relaxation: objective 0.000000e+00, 171 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 (316 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 -- 21 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:41:34 2012 Optimize a model with 3974 rows, 1229 columns and 12510 nonzeros Presolve time: 0.01s Presolved: 3974 rows, 1229 columns, 12510 nonzeros Variable types: 0 continuous, 1229 integer (1229 binary) Root relaxation: objective 0.000000e+00, 180 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 (320 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 -- 10 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:41:34 2012 Optimize a model with 2029 rows, 809 columns and 6255 nonzeros Presolve time: 0.01s Presolved: 2029 rows, 809 columns, 6255 nonzeros Variable types: 0 continuous, 809 integer (809 binary) Root relaxation: objective 0.000000e+00, 202 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 48 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1687 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 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:41:34 2012 Optimize a model with 862 rows, 557 columns and 2502 nonzeros Presolve removed 84 rows and 84 columns Presolve time: 0.00s Presolved: 778 rows, 473 columns, 2334 nonzeros Variable types: 0 continuous, 473 integer (473 binary) Root relaxation: objective 0.000000e+00, 86 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 84 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (346 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 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:41:34 2012 Optimize a model with 1251 rows, 641 columns and 3753 nonzeros Presolve time: 0.00s Presolved: 1251 rows, 641 columns, 3753 nonzeros Variable types: 0 continuous, 641 integer (641 binary) Root relaxation: objective 0.000000e+00, 198 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 0 166 - 0.00000 - - 0s 0 0 0.00000 0 166 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (1768 simplex iterations) in 0.13 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 Thu Dec 13 19:41:34 2012 Optimize a model with 1640 rows, 725 columns and 5004 nonzeros Presolve time: 0.00s Presolved: 1640 rows, 725 columns, 5004 nonzeros Variable types: 0 continuous, 725 integer (725 binary) Root relaxation: objective 0.000000e+00, 199 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 0 160 - 0.00000 - - 0s 0 0 0.00000 0 180 - 0.00000 - - 0s 0 0 0.00000 0 200 - 0.00000 - - 0s 0 0 0.00000 0 213 - 0.00000 - - 0s 0 0 0.00000 0 213 - 0.00000 - - 0s 0 0 0.00000 0 213 - 0.00000 - - 0s 0 2 0.00000 0 213 - 0.00000 - - 0s Cutting planes: Zero half: 22 Explored 147 nodes (17629 simplex iterations) in 1.11 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