current bounds on the number of colors: 0 -- 108 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:01:02 2012 Optimize a model with 29700 rows, 6380 columns and 94608 nonzeros Presolve time: 0.14s Presolved: 29700 rows, 6380 columns, 94608 nonzeros Variable types: 0 continuous, 6380 integer (6380 binary) Root relaxation: objective 0.000000e+00, 372 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 (638 simplex iterations) in 0.21 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 -- 54 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:01:03 2012 Optimize a model with 14904 rows, 3464 columns and 47304 nonzeros Presolve time: 0.06s Presolved: 14904 rows, 3464 columns, 47304 nonzeros Variable types: 0 continuous, 3464 integer (3464 binary) Root relaxation: objective 0.000000e+00, 279 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 (514 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 -- 27 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:01:03 2012 Optimize a model with 7232 rows, 1952 columns and 22776 nonzeros Presolve time: 0.02s Presolved: 7232 rows, 1952 columns, 22776 nonzeros Variable types: 0 continuous, 1952 integer (1952 binary) Root relaxation: objective 0.000000e+00, 227 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 (437 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 20:01:03 2012 Optimize a model with 3396 rows, 1196 columns and 10512 nonzeros Presolve time: 0.01s Presolved: 3396 rows, 1196 columns, 10512 nonzeros Variable types: 0 continuous, 1196 integer (1196 binary) Root relaxation: objective 0.000000e+00, 238 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 12 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1404 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:01:03 2012 Optimize a model with 1752 rows, 872 columns and 5256 nonzeros Presolve time: 0.00s Presolved: 1752 rows, 872 columns, 5256 nonzeros Variable types: 0 continuous, 872 integer (872 binary) Root relaxation: objective 0.000000e+00, 255 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 0 216 - 0.00000 - - 0s 0 0 0.00000 0 245 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3330 simplex iterations) in 0.29 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 20:01:04 2012 Optimize a model with 2300 rows, 980 columns and 7008 nonzeros Presolve time: 0.01s Presolved: 2300 rows, 980 columns, 7008 nonzeros Variable types: 0 continuous, 980 integer (980 binary) Root relaxation: objective 0.000000e+00, 236 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 0 214 - 0.00000 - - 0s 0 0 0.00000 0 200 - 0.00000 - - 0s 0 0 0.00000 0 218 - 0.00000 - - 0s 0 0 0.00000 0 311 - 0.00000 - - 0s 0 0 0.00000 0 186 - 0.00000 - - 0s 0 0 0.00000 0 186 - 0.00000 - - 1s 0 0 0.00000 0 208 - 0.00000 - - 1s 0 0 0.00000 0 284 - 0.00000 - - 1s 0 0 0.00000 0 284 - 0.00000 - - 1s 0 2 0.00000 0 284 - 0.00000 - - 1s Cutting planes: Gomory: 1 Clique: 2 Zero half: 25 Explored 57 nodes (27263 simplex iterations) in 2.52 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 20:01:06 2012 Optimize a model with 2848 rows, 1088 columns and 8760 nonzeros Presolve time: 0.01s Presolved: 2848 rows, 1088 columns, 8760 nonzeros Variable types: 0 continuous, 1088 integer (1088 binary) Root relaxation: objective 0.000000e+00, 228 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 93 - 0.00000 - - 0s 0 0 0.00000 0 206 - 0.00000 - - 0s Cutting planes: Clique: 9 Explored 0 nodes (3880 simplex iterations) in 0.28 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