current bounds on the number of colors: 0 -- 118 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:45:03 2012 Optimize a model with 39766 rows, 7634 columns and 125906 nonzeros Presolve time: 0.15s Presolved: 39766 rows, 7634 columns, 125906 nonzeros Variable types: 0 continuous, 7634 integer (7634 binary) Root relaxation: objective 0.000000e+00, 296 iterations, 0.05 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 (559 simplex iterations) in 0.25 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 -- 59 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:45:04 2012 Optimize a model with 19606 rows, 4094 columns and 61886 nonzeros Presolve time: 0.08s Presolved: 19606 rows, 4094 columns, 61886 nonzeros Variable types: 0 continuous, 4094 integer (4094 binary) Root relaxation: objective 0.000000e+00, 288 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 (546 simplex iterations) in 0.12 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 -- 29 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:45:04 2012 Optimize a model with 9526 rows, 2324 columns and 29876 nonzeros Presolve time: 0.03s Presolved: 9526 rows, 2324 columns, 29876 nonzeros Variable types: 0 continuous, 2324 integer (2324 binary) Root relaxation: objective 0.000000e+00, 246 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 (463 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 -- 14 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:45:04 2012 Optimize a model with 4822 rows, 1498 columns and 14938 nonzeros Presolve time: 0.01s Presolved: 4822 rows, 1498 columns, 14938 nonzeros Variable types: 0 continuous, 1498 integer (1498 binary) Root relaxation: objective 0.000000e+00, 250 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 (1081 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:45:04 2012 Optimize a model with 2134 rows, 1026 columns and 6402 nonzeros Presolve time: 0.01s Presolved: 2134 rows, 1026 columns, 6402 nonzeros Variable types: 0 continuous, 1026 integer (1026 binary) Root relaxation: objective 0.000000e+00, 253 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 0 190 - 0.00000 - - 0s 0 0 0.00000 0 236 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3560 simplex iterations) in 0.34 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:45:05 2012 Optimize a model with 3478 rows, 1262 columns and 10670 nonzeros Presolve time: 0.01s Presolved: 3478 rows, 1262 columns, 10670 nonzeros Variable types: 0 continuous, 1262 integer (1262 binary) Root relaxation: objective 0.000000e+00, 257 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 0 236 - 0.00000 - - 0s 0 0 0.00000 0 186 - 0.00000 - - 0s 0 0 0.00000 0 252 - 0.00000 - - 0s 0 0 0.00000 0 242 - 0.00000 - - 0s 0 0 0.00000 0 262 - 0.00000 - - 0s 0 0 0.00000 0 258 - 0.00000 - - 1s 0 0 0.00000 0 252 - 0.00000 - - 1s 0 0 0.00000 0 275 - 0.00000 - - 1s 0 0 0.00000 0 287 - 0.00000 - - 2s 0 0 0.00000 0 279 - 0.00000 - - 2s 0 2 0.00000 0 279 - 0.00000 - - 2s H 253 0 0.0000000 0.00000 0.0% 79.3 3s Cutting planes: Gomory: 2 Clique: 5 Zero half: 39 Explored 253 nodes (42172 simplex iterations) in 3.73 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: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:45:08 2012 Optimize a model with 2806 rows, 1144 columns and 8536 nonzeros Presolve time: 0.01s Presolved: 2806 rows, 1144 columns, 8536 nonzeros Variable types: 0 continuous, 1144 integer (1144 binary) Root relaxation: objective 0.000000e+00, 263 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 0 234 - 0.00000 - - 0s 0 0 0.00000 0 232 - 0.00000 - - 0s 0 0 0.00000 0 224 - 0.00000 - - 0s 0 0 0.00000 0 361 - 0.00000 - - 0s 0 0 0.00000 0 309 - 0.00000 - - 1s 0 0 0.00000 0 344 - 0.00000 - - 2s 0 0 0.00000 0 335 - 0.00000 - - 2s 0 0 0.00000 0 330 - 0.00000 - - 2s 0 0 0.00000 0 332 - 0.00000 - - 3s 0 0 0.00000 0 322 - 0.00000 - - 3s 0 2 0.00000 0 322 - 0.00000 - - 4s Cutting planes: Clique: 12 Zero half: 24 Explored 15 nodes (29185 simplex iterations) in 4.44 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - optimal solution found: number of colors: 5