current bounds on the number of colors: 0 -- 49 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:10:24 2012 Optimize a model with 14137 rows, 1763 columns and 43440 nonzeros Presolve time: 0.05s Presolved: 14137 rows, 1763 columns, 43440 nonzeros Variable types: 0 continuous, 1763 integer (1763 binary) Root relaxation: objective 0.000000e+00, 118 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 (414 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 18:10:24 2012 Optimize a model with 7093 rows, 1175 columns and 21720 nonzeros Presolve time: 0.02s Presolved: 7093 rows, 1175 columns, 21720 nonzeros Variable types: 0 continuous, 1175 integer (1175 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 (783 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 18:10:24 2012 Optimize a model with 3571 rows, 881 columns and 10860 nonzeros Presolve time: 0.01s Presolved: 3571 rows, 881 columns, 10860 nonzeros Variable types: 0 continuous, 881 integer (881 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 48 - 0.00000 - - 0s 0 0 0.00000 0 52 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2320 simplex iterations) in 0.26 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 18:10:24 2012 Optimize a model with 5332 rows, 1028 columns and 16290 nonzeros Presolve time: 0.01s Presolved: 5332 rows, 1028 columns, 16290 nonzeros Variable types: 0 continuous, 1028 integer (1028 binary) Root relaxation: objective 0.000000e+00, 107 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 60 - 0.00000 - - 0s 0 0 0.00000 0 33 - 0.00000 - - 0s 0 0 0.00000 0 53 - 0.00000 - - 0s 0 0 0.00000 0 194 - 0.00000 - - 0s * 0 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Gomory: 6 Clique: 11 Zero half: 6 Explored 0 nodes (7110 simplex iterations) in 0.88 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 18:10:25 2012 Optimize a model with 4158 rows, 930 columns and 12670 nonzeros Presolve time: 0.01s Presolved: 4158 rows, 930 columns, 12670 nonzeros Variable types: 0 continuous, 930 integer (930 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 64 - 0.00000 - - 0s 0 0 0.00000 0 38 - 0.00000 - - 0s 0 0 0.00000 0 231 - 0.00000 - - 0s 0 0 0.00000 0 291 - 0.00000 - - 1s 0 0 0.00000 0 286 - 0.00000 - - 1s 0 0 0.00000 0 273 - 0.00000 - - 2s 0 0 0.00000 0 271 - 0.00000 - - 3s 0 0 0.00000 0 290 - 0.00000 - - 3s 0 0 0.00000 0 271 - 0.00000 - - 4s 0 0 0.00000 0 254 - 0.00000 - - 5s 0 0 0.00000 0 275 - 0.00000 - - 6s 0 0 0.00000 0 250 - 0.00000 - - 7s 0 0 0.00000 0 291 - 0.00000 - - 7s 0 0 0.00000 0 273 - 0.00000 - - 8s 0 2 0.00000 0 271 - 0.00000 - - 8s Cutting planes: Clique: 65 Zero half: 40 Explored 3 nodes (47088 simplex iterations) in 8.90 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - current bounds on the number of colors: 7 -- 9 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:10:34 2012 Optimize a model with 4745 rows, 979 columns and 14480 nonzeros Presolve time: 0.01s Presolved: 4745 rows, 979 columns, 14480 nonzeros Variable types: 0 continuous, 979 integer (979 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 0.00000 0 151 - 0.00000 - - 0s 0 0 0.00000 0 201 - 0.00000 - - 0s 0 0 0.00000 0 153 - 0.00000 - - 1s 0 0 0.00000 0 148 - 0.00000 - - 1s 0 0 0.00000 0 143 - 0.00000 - - 2s 0 0 0.00000 0 145 - 0.00000 - - 2s 0 0 0.00000 0 207 - 0.00000 - - 2s 0 0 0.00000 0 213 - 0.00000 - - 3s 0 0 0.00000 0 187 - 0.00000 - - 3s 0 2 0.00000 0 187 - 0.00000 - - 3s Cutting planes: Clique: 56 Zero half: 2 Explored 19 nodes (28552 simplex iterations) in 3.89 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - optimal solution found: number of colors: 9