current bounds on the number of colors: 0 -- 49 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:10:51 2012 Optimize a model with 14017 rows, 1758 columns and 43080 nonzeros Presolve time: 0.05s Presolved: 14017 rows, 1758 columns, 43080 nonzeros Variable types: 0 continuous, 1758 integer (1758 binary) Root relaxation: objective 0.000000e+00, 106 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 (440 simplex iterations) in 0.10 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 18:10:51 2012 Optimize a model with 7033 rows, 1170 columns and 21540 nonzeros Presolve time: 0.02s Presolved: 7033 rows, 1170 columns, 21540 nonzeros Variable types: 0 continuous, 1170 integer (1170 binary) Root relaxation: objective 0.000000e+00, 103 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 (805 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 -- 12 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:10:52 2012 Optimize a model with 3541 rows, 876 columns and 10770 nonzeros Presolve time: 0.01s Presolved: 3541 rows, 876 columns, 10770 nonzeros Variable types: 0 continuous, 876 integer (876 binary) Root relaxation: objective 0.000000e+00, 101 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 74 - 0.00000 - - 0s 0 0 0.00000 0 52 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2514 simplex iterations) in 0.28 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: 6 -- 12 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:10:52 2012 Optimize a model with 5287 rows, 1023 columns and 16155 nonzeros Presolve time: 0.01s Presolved: 5287 rows, 1023 columns, 16155 nonzeros Variable types: 0 continuous, 1023 integer (1023 binary) Root relaxation: objective 0.000000e+00, 104 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 40 - 0.00000 - - 0s 0 0 0.00000 0 53 - 0.00000 - - 0s 0 0 0.00000 0 121 - 0.00000 - - 0s 0 0 0.00000 0 136 - 0.00000 - - 0s 0 0 0.00000 0 45 - 0.00000 - - 1s 0 0 0.00000 0 84 - 0.00000 - - 1s 0 0 0.00000 0 20 - 0.00000 - - 1s 0 0 0.00000 0 76 - 0.00000 - - 1s 0 0 0.00000 0 92 - 0.00000 - - 2s 0 0 0.00000 0 173 - 0.00000 - - 2s 0 0 0.00000 0 144 - 0.00000 - - 3s 0 2 0.00000 0 22 - 0.00000 - - 4s 26 11 0.00000 7 102 - 0.00000 - 152 5s * 290 2 15 0.0000000 0.00000 0.0% 58.1 5s Cutting planes: Clique: 14 Zero half: 2 Explored 291 nodes (40292 simplex iterations) in 5.86 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: 6 -- 9 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:10:58 2012 Optimize a model with 4123 rows, 925 columns and 12565 nonzeros Presolve time: 0.01s Presolved: 4123 rows, 925 columns, 12565 nonzeros Variable types: 0 continuous, 925 integer (925 binary) Root relaxation: objective 0.000000e+00, 98 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 46 - 0.00000 - - 0s 0 0 0.00000 0 46 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2200 simplex iterations) in 0.28 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: 7 -- 9 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:10:58 2012 Optimize a model with 4705 rows, 974 columns and 14360 nonzeros Presolve time: 0.01s Presolved: 4705 rows, 974 columns, 14360 nonzeros Variable types: 0 continuous, 974 integer (974 binary) Root relaxation: objective 0.000000e+00, 98 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 34 - 0.00000 - - 0s 0 0 0.00000 0 62 - 0.00000 - - 0s 0 0 0.00000 0 151 - 0.00000 - - 0s 0 0 0.00000 0 197 - 0.00000 - - 0s 0 0 0.00000 0 149 - 0.00000 - - 1s 0 0 0.00000 0 138 - 0.00000 - - 1s 0 0 0.00000 0 154 - 0.00000 - - 2s 0 0 0.00000 0 154 - 0.00000 - - 2s 0 0 0.00000 0 174 - 0.00000 - - 3s 0 0 0.00000 0 174 - 0.00000 - - 3s 0 2 0.00000 0 174 - 0.00000 - - 4s Cutting planes: Clique: 69 Zero half: 5 Explored 31 nodes (30995 simplex iterations) in 4.79 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - optimal solution found: number of colors: 9