current bounds on the number of colors: 0 -- 87 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:42:45 2012 Optimize a model with 16685 rows, 4127 columns and 53535 nonzeros Presolve time: 0.09s Presolved: 16685 rows, 4127 columns, 53535 nonzeros Variable types: 0 continuous, 4127 integer (4127 binary) Root relaxation: objective 0.000000e+00, 252 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 (438 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 -- 43 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:42:46 2012 Optimize a model with 8193 rows, 2213 columns and 26145 nonzeros Presolve time: 0.03s Presolved: 8193 rows, 2213 columns, 26145 nonzeros Variable types: 0 continuous, 2213 integer (2213 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (358 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 19:42:46 2012 Optimize a model with 3947 rows, 1256 columns and 12450 nonzeros Presolve time: 0.01s Presolved: 3947 rows, 1256 columns, 12450 nonzeros Variable types: 0 continuous, 1256 integer (1256 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 (348 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 19:42:46 2012 Optimize a model with 2017 rows, 821 columns and 6225 nonzeros Presolve time: 0.01s Presolved: 2017 rows, 821 columns, 6225 nonzeros Variable types: 0 continuous, 821 integer (821 binary) Root relaxation: objective 0.000000e+00, 194 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 (964 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 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:42:46 2012 Optimize a model with 859 rows, 560 columns and 2490 nonzeros Presolve removed 87 rows and 87 columns Presolve time: 0.00s Presolved: 772 rows, 473 columns, 2316 nonzeros Variable types: 0 continuous, 473 integer (473 binary) Root relaxation: objective 0.000000e+00, 90 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 87 - 0.00000 - - 0s Explored 0 nodes (369 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 19:42:46 2012 Optimize a model with 1245 rows, 647 columns and 3735 nonzeros Presolve time: 0.00s Presolved: 1245 rows, 647 columns, 3735 nonzeros Variable types: 0 continuous, 647 integer (647 binary) Root relaxation: objective 0.000000e+00, 183 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 0 174 - 0.00000 - - 0s 0 0 0.00000 0 162 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2045 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 19:42:46 2012 Optimize a model with 1631 rows, 734 columns and 4980 nonzeros Presolve time: 0.00s Presolved: 1631 rows, 734 columns, 4980 nonzeros Variable types: 0 continuous, 734 integer (734 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 0 162 - 0.00000 - - 0s 0 0 0.00000 0 203 - 0.00000 - - 0s 0 0 0.00000 0 160 - 0.00000 - - 0s 0 0 0.00000 0 223 - 0.00000 - - 0s 0 0 0.00000 0 154 - 0.00000 - - 0s 0 0 0.00000 0 158 - 0.00000 - - 0s 0 0 0.00000 0 220 - 0.00000 - - 0s 0 0 0.00000 0 195 - 0.00000 - - 0s 0 2 0.00000 0 195 - 0.00000 - - 0s Cutting planes: Clique: 1 Zero half: 5 Explored 239 nodes (24497 simplex iterations) in 1.35 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