current bounds on the number of colors: 0 -- 112 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:08:59 2012 Optimize a model with 33936 rows, 6876 columns and 107744 nonzeros Presolve time: 0.15s Presolved: 33936 rows, 6876 columns, 107744 nonzeros Variable types: 0 continuous, 6876 integer (6876 binary) Root relaxation: objective 0.000000e+00, 390 iterations, 0.03 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 (657 simplex iterations) in 0.23 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 Thu Dec 13 20:09:00 2012 Optimize a model with 17024 rows, 3740 columns and 53872 nonzeros Presolve time: 0.08s Presolved: 17024 rows, 3740 columns, 53872 nonzeros Variable types: 0 continuous, 3740 integer (3740 binary) Root relaxation: objective 0.000000e+00, 263 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 (568 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 -- 28 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:09:00 2012 Optimize a model with 8568 rows, 2172 columns and 26936 nonzeros Presolve time: 0.03s Presolved: 8568 rows, 2172 columns, 26936 nonzeros Variable types: 0 continuous, 2172 integer (2172 binary) Root relaxation: objective 0.000000e+00, 229 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 (451 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 -- 14 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:09:01 2012 Optimize a model with 4340 rows, 1388 columns and 13468 nonzeros Presolve time: 0.01s Presolved: 4340 rows, 1388 columns, 13468 nonzeros Variable types: 0 continuous, 1388 integer (1388 binary) Root relaxation: objective 0.000000e+00, 239 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 (862 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:09:01 2012 Optimize a model with 1924 rows, 940 columns and 5772 nonzeros Presolve time: 0.00s Presolved: 1924 rows, 940 columns, 5772 nonzeros Variable types: 0 continuous, 940 integer (940 binary) Root relaxation: objective 0.000000e+00, 272 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 0 224 - 0.00000 - - 0s 0 0 0.00000 0 260 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3322 simplex iterations) in 0.37 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:09:01 2012 Optimize a model with 3132 rows, 1164 columns and 9620 nonzeros Presolve time: 0.01s Presolved: 3132 rows, 1164 columns, 9620 nonzeros Variable types: 0 continuous, 1164 integer (1164 binary) Root relaxation: objective 0.000000e+00, 243 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 0 220 - 0.00000 - - 0s 0 0 0.00000 0 187 - 0.00000 - - 0s 0 0 0.00000 0 50 - 0.00000 - - 0s 0 0 0.00000 0 316 - 0.00000 - - 0s 0 0 0.00000 0 44 - 0.00000 - - 1s * 0 0 0 0.0000000 0.00000 0.0% - 1s Cutting planes: Clique: 1 Zero half: 11 Explored 0 nodes (10349 simplex iterations) in 1.06 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: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:09:02 2012 Optimize a model with 2528 rows, 1052 columns and 7696 nonzeros Presolve time: 0.01s Presolved: 2528 rows, 1052 columns, 7696 nonzeros Variable types: 0 continuous, 1052 integer (1052 binary) Root relaxation: objective 0.000000e+00, 248 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 0 220 - 0.00000 - - 0s 0 0 0.00000 0 216 - 0.00000 - - 0s 0 0 0.00000 0 305 - 0.00000 - - 0s 0 0 0.00000 0 305 - 0.00000 - - 0s 0 0 0.00000 0 303 - 0.00000 - - 1s 0 0 0.00000 0 300 - 0.00000 - - 1s 0 0 0.00000 0 306 - 0.00000 - - 1s 0 0 0.00000 0 306 - 0.00000 - - 2s 0 2 0.00000 0 306 - 0.00000 - - 2s Cutting planes: Clique: 13 Zero half: 29 Explored 33 nodes (22020 simplex iterations) in 2.89 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