current bounds on the number of colors: 0 -- 92 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:46:14 2012 Optimize a model with 18998 rows, 4643 columns and 60950 nonzeros Presolve time: 0.11s Presolved: 18998 rows, 4643 columns, 60950 nonzeros Variable types: 0 continuous, 4643 integer (4643 binary) Root relaxation: objective 0.000000e+00, 256 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 (448 simplex iterations) in 0.15 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 -- 46 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:46:15 2012 Optimize a model with 9545 rows, 2527 columns and 30475 nonzeros Presolve time: 0.04s Presolved: 9545 rows, 2527 columns, 30475 nonzeros Variable types: 0 continuous, 2527 integer (2527 binary) Root relaxation: objective 0.000000e+00, 212 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 (373 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 -- 23 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:46:15 2012 Optimize a model with 4613 rows, 1423 columns and 14575 nonzeros Presolve time: 0.01s Presolved: 4613 rows, 1423 columns, 14575 nonzeros Variable types: 0 continuous, 1423 integer (1423 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (335 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 -- 11 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:46:15 2012 Optimize a model with 2147 rows, 871 columns and 6625 nonzeros Presolve time: 0.01s Presolved: 2147 rows, 871 columns, 6625 nonzeros Variable types: 0 continuous, 871 integer (871 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1158 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 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:46:15 2012 Optimize a model with 914 rows, 595 columns and 2650 nonzeros Presolve removed 92 rows and 92 columns Presolve time: 0.00s Presolved: 822 rows, 503 columns, 2466 nonzeros Variable types: 0 continuous, 503 integer (503 binary) Root relaxation: objective 0.000000e+00, 95 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 92 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (381 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 19:46:15 2012 Optimize a model with 1325 rows, 687 columns and 3975 nonzeros Presolve time: 0.00s Presolved: 1325 rows, 687 columns, 3975 nonzeros Variable types: 0 continuous, 687 integer (687 binary) Root relaxation: objective 0.000000e+00, 201 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 0 180 - 0.00000 - - 0s 0 0 0.00000 0 178 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2167 simplex iterations) in 0.16 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 19:46:15 2012 Optimize a model with 1736 rows, 779 columns and 5300 nonzeros Presolve time: 0.00s Presolved: 1736 rows, 779 columns, 5300 nonzeros Variable types: 0 continuous, 779 integer (779 binary) Root relaxation: objective 0.000000e+00, 200 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 0.00000 0 181 - 0.00000 - - 0s 0 0 0.00000 0 183 - 0.00000 - - 0s 0 0 0.00000 0 214 - 0.00000 - - 0s 0 0 0.00000 0 187 - 0.00000 - - 0s 0 0 0.00000 0 224 - 0.00000 - - 0s 0 0 0.00000 0 229 - 0.00000 - - 0s 0 0 0.00000 0 229 - 0.00000 - - 0s 0 2 0.00000 0 229 - 0.00000 - - 0s Cutting planes: Clique: 3 Zero half: 18 Explored 49 nodes (15019 simplex iterations) in 1.14 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