current bounds on the number of colors: 0 -- 99 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:51:04 2012 Optimize a model with 23619 rows, 5331 columns and 75411 nonzeros Presolve time: 0.13s Presolved: 23619 rows, 5331 columns, 75411 nonzeros Variable types: 0 continuous, 5331 integer (5331 binary) Root relaxation: objective 0.000000e+00, 278 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 (489 simplex iterations) in 0.17 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 -- 49 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:51:05 2012 Optimize a model with 11619 rows, 2856 columns and 36936 nonzeros Presolve time: 0.05s Presolved: 11619 rows, 2856 columns, 36936 nonzeros Variable types: 0 continuous, 2856 integer (2856 binary) Root relaxation: objective 0.000000e+00, 223 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 (419 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 -- 24 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:51:05 2012 Optimize a model with 5859 rows, 1668 columns and 18468 nonzeros Presolve time: 0.02s Presolved: 5859 rows, 1668 columns, 18468 nonzeros Variable types: 0 continuous, 1668 integer (1668 binary) Root relaxation: objective 0.000000e+00, 204 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 (405 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 -- 12 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:51:05 2012 Optimize a model with 2979 rows, 1074 columns and 9234 nonzeros Presolve time: 0.01s Presolved: 2979 rows, 1074 columns, 9234 nonzeros Variable types: 0 continuous, 1074 integer (1074 binary) Root relaxation: objective 0.000000e+00, 226 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 (845 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:51:05 2012 Optimize a model with 1539 rows, 777 columns and 4617 nonzeros Presolve time: 0.00s Presolved: 1539 rows, 777 columns, 4617 nonzeros Variable types: 0 continuous, 777 integer (777 binary) Root relaxation: objective 0.000000e+00, 224 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 0 196 - 0.00000 - - 0s 0 0 0.00000 0 194 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2471 simplex iterations) in 0.19 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 Thu Dec 13 19:51:05 2012 Optimize a model with 2019 rows, 876 columns and 6156 nonzeros Presolve time: 0.01s Presolved: 2019 rows, 876 columns, 6156 nonzeros Variable types: 0 continuous, 876 integer (876 binary) Root relaxation: objective 0.000000e+00, 222 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 0 196 - 0.00000 - - 0s 0 0 0.00000 0 170 - 0.00000 - - 0s 0 0 0.00000 0 249 - 0.00000 - - 0s 0 0 0.00000 0 277 - 0.00000 - - 0s 0 0 0.00000 0 274 - 0.00000 - - 0s 0 0 0.00000 0 231 - 0.00000 - - 0s 0 0 0.00000 0 233 - 0.00000 - - 1s 0 0 0.00000 0 245 - 0.00000 - - 1s 0 0 0.00000 0 245 - 0.00000 - - 1s 0 2 0.00000 0 245 - 0.00000 - - 1s Cutting planes: Gomory: 1 Clique: 3 Zero half: 35 Explored 73 nodes (23136 simplex iterations) in 2.11 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 Thu Dec 13 19:51:07 2012 Optimize a model with 2499 rows, 975 columns and 7695 nonzeros Presolve time: 0.01s Presolved: 2499 rows, 975 columns, 7695 nonzeros Variable types: 0 continuous, 975 integer (975 binary) Root relaxation: objective 0.000000e+00, 221 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 0 184 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (965 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% optimal solution found: number of colors: 5