current bounds on the number of colors: 0 -- 105 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:57:18 2012 Optimize a model with 31409 rows, 6062 columns and 99372 nonzeros Presolve time: 0.15s Presolved: 31409 rows, 6062 columns, 99372 nonzeros Variable types: 0 continuous, 6062 integer (6062 binary) Root relaxation: objective 0.000000e+00, 277 iterations, 0.04 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 (550 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 -- 52 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:57:19 2012 Optimize a model with 15757 rows, 3332 columns and 49686 nonzeros Presolve time: 0.06s Presolved: 15757 rows, 3332 columns, 49686 nonzeros Variable types: 0 continuous, 3332 integer (3332 binary) Root relaxation: objective 0.000000e+00, 252 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 (484 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 -- 26 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:57:19 2012 Optimize a model with 7931 rows, 1967 columns and 24843 nonzeros Presolve time: 0.02s Presolved: 7931 rows, 1967 columns, 24843 nonzeros Variable types: 0 continuous, 1967 integer (1967 binary) Root relaxation: objective 0.000000e+00, 218 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 (418 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 -- 13 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:57:19 2012 Optimize a model with 3717 rows, 1232 columns and 11466 nonzeros Presolve time: 0.01s Presolved: 3717 rows, 1232 columns, 11466 nonzeros Variable types: 0 continuous, 1232 integer (1232 binary) Root relaxation: objective 0.000000e+00, 221 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 61 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1962 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:57:19 2012 Optimize a model with 1911 rows, 917 columns and 5733 nonzeros Presolve time: 0.00s Presolved: 1911 rows, 917 columns, 5733 nonzeros Variable types: 0 continuous, 917 integer (917 binary) Root relaxation: objective 0.000000e+00, 241 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 0 166 - 0.00000 - - 0s 0 0 0.00000 0 210 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3394 simplex iterations) in 0.33 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:57:20 2012 Optimize a model with 2513 rows, 1022 columns and 7644 nonzeros Presolve time: 0.01s Presolved: 2513 rows, 1022 columns, 7644 nonzeros Variable types: 0 continuous, 1022 integer (1022 binary) Root relaxation: objective 0.000000e+00, 233 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 0 210 - 0.00000 - - 0s 0 0 0.00000 0 208 - 0.00000 - - 0s 0 0 0.00000 0 320 - 0.00000 - - 0s 0 0 0.00000 0 312 - 0.00000 - - 0s 0 0 0.00000 0 307 - 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 0 313 - 0.00000 - - 1s 0 0 0.00000 0 303 - 0.00000 - - 1s 0 0 0.00000 0 305 - 0.00000 - - 2s 0 0 0.00000 0 303 - 0.00000 - - 2s 0 0 0.00000 0 306 - 0.00000 - - 3s 0 0 0.00000 0 314 - 0.00000 - - 3s 0 0 0.00000 0 314 - 0.00000 - - 3s 0 2 0.00000 0 314 - 0.00000 - - 4s Cutting planes: Clique: 3 Zero half: 15 Explored 9 nodes (22908 simplex iterations) in 4.47 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: 4 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:57:24 2012 Optimize a model with 3115 rows, 1127 columns and 9555 nonzeros Presolve time: 0.01s Presolved: 3115 rows, 1127 columns, 9555 nonzeros Variable types: 0 continuous, 1127 integer (1127 binary) Root relaxation: objective 0.000000e+00, 226 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 0 200 - 0.00000 - - 0s 0 0 0.00000 0 180 - 0.00000 - - 0s 0 0 0.00000 0 178 - 0.00000 - - 0s 0 0 0.00000 0 238 - 0.00000 - - 0s 0 0 0.00000 0 251 - 0.00000 - - 0s 0 0 0.00000 0 251 - 0.00000 - - 0s 0 2 0.00000 0 251 - 0.00000 - - 1s * 63 1 23 0.0000000 0.00000 0.0% 110 1s Cutting planes: Clique: 7 Zero half: 18 Explored 64 nodes (17445 simplex iterations) in 1.69 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: 5