current bounds on the number of colors: 0 -- 226 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:26 2012 Optimize a model with 32092 rows, 25820 columns and 121136 nonzeros Presolve removed 18 rows and 2034 columns Presolve time: 0.15s Presolved: 32074 rows, 23786 columns, 119102 nonzeros Variable types: 0 continuous, 23786 integer (23786 binary) Root relaxation: objective 0.000000e+00, 391 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 (391 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 -- 113 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:27 2012 Optimize a model with 16018 rows, 12938 columns and 60032 nonzeros Presolve removed 18 rows and 1008 columns Presolve time: 0.12s Presolved: 16000 rows, 11930 columns, 59024 nonzeros Variable types: 0 continuous, 11930 integer (11930 binary) Root relaxation: objective 0.000000e+00, 390 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 (390 simplex iterations) in 0.13 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 -- 56 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:27 2012 Optimize a model with 8122 rows, 6610 columns and 30016 nonzeros Presolve removed 18 rows and 504 columns Presolve time: 0.05s Presolved: 8104 rows, 6106 columns, 29512 nonzeros Variable types: 0 continuous, 6106 integer (6106 binary) Root relaxation: objective 0.000000e+00, 395 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 (395 simplex iterations) in 0.06 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 -- 28 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:27 2012 Optimize a model with 4174 rows, 3446 columns and 15008 nonzeros Presolve removed 18 rows and 252 columns Presolve time: 0.02s Presolved: 4156 rows, 3194 columns, 14756 nonzeros Variable types: 0 continuous, 3194 integer (3194 binary) Root relaxation: objective 0.000000e+00, 413 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 (652 simplex iterations) in 0.03 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 -- 14 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:27 2012 Optimize a model with 2200 rows, 1864 columns and 7504 nonzeros Presolve removed 18 rows and 126 columns Presolve time: 0.01s Presolved: 2182 rows, 1738 columns, 7378 nonzeros Variable types: 0 continuous, 1738 integer (1738 binary) Root relaxation: objective 0.000000e+00, 382 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 (382 simplex iterations) in 0.01 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:27 2012 Optimize a model with 1072 rows, 960 columns and 3216 nonzeros Presolve removed 18 rows and 54 columns Presolve time: 0.00s Presolved: 1054 rows, 906 columns, 3162 nonzeros Variable types: 0 continuous, 906 integer (906 binary) Root relaxation: objective 0.000000e+00, 438 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 (438 simplex iterations) in 0.01 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:27 2012 Optimize a model with 508 rows, 508 columns and 1072 nonzeros Presolve removed 508 rows and 508 columns Presolve time: 0.00s Explored 0 nodes (0 simplex iterations) in 0.00 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: 1 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:27 2012 Optimize a model with 790 rows, 734 columns and 2144 nonzeros Presolve removed 234 rows and 256 columns Presolve time: 0.00s Presolved: 556 rows, 478 columns, 1668 nonzeros Variable types: 0 continuous, 478 integer (478 binary) Root relaxation: objective 0.000000e+00, 241 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 0 200 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (753 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 - optimal solution found: number of colors: 3