current bounds on the number of colors: 0 -- 47 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:07:47 2012 Optimize a model with 13295 rows, 1657 columns and 40825 nonzeros Presolve time: 0.05s Presolved: 13295 rows, 1657 columns, 40825 nonzeros Variable types: 0 continuous, 1657 integer (1657 binary) Root relaxation: objective 0.000000e+00, 105 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 (252 simplex iterations) in 0.08 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 -- 23 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:07:47 2012 Optimize a model with 6383 rows, 1093 columns and 19525 nonzeros Presolve time: 0.02s Presolved: 6383 rows, 1093 columns, 19525 nonzeros Variable types: 0 continuous, 1093 integer (1093 binary) Root relaxation: objective 0.000000e+00, 102 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 28 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1149 simplex iterations) in 0.09 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 -- 11 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:07:48 2012 Optimize a model with 2927 rows, 811 columns and 8875 nonzeros Presolve time: 0.01s Presolved: 2927 rows, 811 columns, 8875 nonzeros Variable types: 0 continuous, 811 integer (811 binary) Root relaxation: objective 0.000000e+00, 94 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 92 - 0.00000 - - 0s 0 0 0.00000 0 94 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (1815 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: 5 -- 11 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:07:48 2012 Optimize a model with 4655 rows, 952 columns and 14200 nonzeros Presolve time: 0.01s Presolved: 4655 rows, 952 columns, 14200 nonzeros Variable types: 0 continuous, 952 integer (952 binary) Root relaxation: objective 0.000000e+00, 94 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 52 - 0.00000 - - 0s 0 0 0.00000 0 50 - 0.00000 - - 0s 0 0 0.00000 0 215 - 0.00000 - - 0s 0 0 0.00000 0 252 - 0.00000 - - 0s 0 0 0.00000 0 254 - 0.00000 - - 1s 0 0 0.00000 0 197 - 0.00000 - - 2s 0 0 0.00000 0 267 - 0.00000 - - 2s 0 0 0.00000 0 261 - 0.00000 - - 3s 0 2 0.00000 0 261 - 0.00000 - - 3s Cutting planes: Clique: 98 Zero half: 8 Explored 11 nodes (23364 simplex iterations) in 3.90 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: 8 -- 11 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:07:52 2012 Optimize a model with 5231 rows, 999 columns and 15975 nonzeros Presolve time: 0.01s Presolved: 5231 rows, 999 columns, 15975 nonzeros Variable types: 0 continuous, 999 integer (999 binary) Root relaxation: objective 0.000000e+00, 103 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 44 - 0.00000 - - 0s 0 0 0.00000 0 67 - 0.00000 - - 0s 0 0 0.00000 0 94 - 0.00000 - - 0s 0 0 0.00000 0 114 - 0.00000 - - 0s 0 0 0.00000 0 100 - 0.00000 - - 1s 0 0 0.00000 0 128 - 0.00000 - - 1s 0 0 0.00000 0 161 - 0.00000 - - 1s 0 0 0.00000 0 127 - 0.00000 - - 2s 0 0 0.00000 0 177 - 0.00000 - - 2s 0 0 0.00000 0 177 - 0.00000 - - 3s 0 2 0.00000 0 177 - 0.00000 - - 3s 194 10 0.00000 12 98 - 0.00000 - 97.8 5s Cutting planes: Clique: 73 Zero half: 20 Explored 241 nodes (46510 simplex iterations) in 5.40 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: 9 -- 11 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:07:58 2012 Optimize a model with 5807 rows, 1046 columns and 17750 nonzeros Presolve time: 0.02s Presolved: 5807 rows, 1046 columns, 17750 nonzeros Variable types: 0 continuous, 1046 integer (1046 binary) Root relaxation: objective 0.000000e+00, 105 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 36 - 0.00000 - - 0s * 0 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Gomory: 1 Clique: 29 MIR: 5 Zero half: 37 Explored 0 nodes (1249 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% optimal solution found: number of colors: 10