current bounds on the number of colors: 0 -- 87 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:43:09 2012 Optimize a model with 16470 rows, 4122 columns and 52890 nonzeros Presolve time: 0.09s Presolved: 16470 rows, 4122 columns, 52890 nonzeros Variable types: 0 continuous, 4122 integer (4122 binary) Root relaxation: objective 0.000000e+00, 246 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 (429 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 19:43:09 2012 Optimize a model with 8088 rows, 2208 columns and 25830 nonzeros Presolve time: 0.03s Presolved: 8088 rows, 2208 columns, 25830 nonzeros Variable types: 0 continuous, 2208 integer (2208 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 (371 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 19:43:09 2012 Optimize a model with 3897 rows, 1251 columns and 12300 nonzeros Presolve time: 0.01s Presolved: 3897 rows, 1251 columns, 12300 nonzeros Variable types: 0 continuous, 1251 integer (1251 binary) Root relaxation: objective 0.000000e+00, 192 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 (480 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 19:43:10 2012 Optimize a model with 1992 rows, 816 columns and 6150 nonzeros Presolve time: 0.01s Presolved: 1992 rows, 816 columns, 6150 nonzeros Variable types: 0 continuous, 816 integer (816 binary) Root relaxation: objective 0.000000e+00, 190 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 (1363 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 19:43:10 2012 Optimize a model with 849 rows, 555 columns and 2460 nonzeros Presolve removed 87 rows and 87 columns Presolve time: 0.00s Presolved: 762 rows, 468 columns, 2286 nonzeros Variable types: 0 continuous, 468 integer (468 binary) Root relaxation: objective 0.000000e+00, 92 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 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (373 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 19:43:10 2012 Optimize a model with 1230 rows, 642 columns and 3690 nonzeros Presolve time: 0.00s Presolved: 1230 rows, 642 columns, 3690 nonzeros Variable types: 0 continuous, 642 integer (642 binary) Root relaxation: objective 0.000000e+00, 190 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 0 168 - 0.00000 - - 0s 0 0 0.00000 0 174 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2088 simplex iterations) in 0.14 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 19:43:10 2012 Optimize a model with 1611 rows, 729 columns and 4920 nonzeros Presolve time: 0.00s Presolved: 1611 rows, 729 columns, 4920 nonzeros Variable types: 0 continuous, 729 integer (729 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 0 160 - 0.00000 - - 0s 0 0 0.00000 0 154 - 0.00000 - - 0s 0 0 0.00000 0 162 - 0.00000 - - 0s 0 0 0.00000 0 187 - 0.00000 - - 0s 0 0 0.00000 0 185 - 0.00000 - - 0s 0 0 0.00000 0 225 - 0.00000 - - 0s 0 0 0.00000 0 223 - 0.00000 - - 0s 0 0 0.00000 0 216 - 0.00000 - - 0s 0 0 0.00000 0 220 - 0.00000 - - 0s 0 0 0.00000 0 220 - 0.00000 - - 0s 0 2 0.00000 0 220 - 0.00000 - - 1s Cutting planes: Clique: 1 Zero half: 26 Explored 251 nodes (32359 simplex iterations) in 1.96 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