current bounds on the number of colors: 0 -- 115 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:21:59 2012 Optimize a model with 36424 rows, 7192 columns and 115482 nonzeros Presolve time: 0.14s Presolved: 36424 rows, 7192 columns, 115482 nonzeros Variable types: 0 continuous, 7192 integer (7192 binary) Root relaxation: objective 0.000000e+00, 275 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 (528 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 -- 57 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:22:00 2012 Optimize a model with 17951 rows, 3857 columns and 56728 nonzeros Presolve time: 0.08s Presolved: 17951 rows, 3857 columns, 56728 nonzeros Variable types: 0 continuous, 3857 integer (3857 binary) Root relaxation: objective 0.000000e+00, 265 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 (493 simplex iterations) in 0.11 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 -- 28 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:22:00 2012 Optimize a model with 9033 rows, 2247 columns and 28364 nonzeros Presolve time: 0.03s Presolved: 9033 rows, 2247 columns, 28364 nonzeros Variable types: 0 continuous, 2247 integer (2247 binary) Root relaxation: objective 0.000000e+00, 241 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 (594 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 20:22:01 2012 Optimize a model with 4574 rows, 1442 columns and 14182 nonzeros Presolve time: 0.01s Presolved: 4574 rows, 1442 columns, 14182 nonzeros Variable types: 0 continuous, 1442 integer (1442 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (822 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:22:01 2012 Optimize a model with 2026 rows, 982 columns and 6078 nonzeros Presolve time: 0.00s Presolved: 2026 rows, 982 columns, 6078 nonzeros Variable types: 0 continuous, 982 integer (982 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 0 230 - 0.00000 - - 0s 0 0 0.00000 0 230 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2944 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:22:01 2012 Optimize a model with 3300 rows, 1212 columns and 10130 nonzeros Presolve time: 0.01s Presolved: 3300 rows, 1212 columns, 10130 nonzeros Variable types: 0 continuous, 1212 integer (1212 binary) Root relaxation: objective 0.000000e+00, 261 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 0 220 - 0.00000 - - 0s 0 0 0.00000 0 188 - 0.00000 - - 0s 0 0 0.00000 0 96 - 0.00000 - - 0s 0 0 0.00000 0 289 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Gomory: 4 Clique: 3 Zero half: 7 Explored 0 nodes (7252 simplex iterations) in 0.63 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 20:22:02 2012 Optimize a model with 2663 rows, 1097 columns and 8104 nonzeros Presolve time: 0.01s Presolved: 2663 rows, 1097 columns, 8104 nonzeros Variable types: 0 continuous, 1097 integer (1097 binary) Root relaxation: objective 0.000000e+00, 242 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 0 226 - 0.00000 - - 0s 0 0 0.00000 0 303 - 0.00000 - - 0s 0 0 0.00000 0 314 - 0.00000 - - 0s 0 0 0.00000 0 311 - 0.00000 - - 1s 0 0 0.00000 0 308 - 0.00000 - - 1s 0 0 0.00000 0 313 - 0.00000 - - 2s 0 0 0.00000 0 314 - 0.00000 - - 2s 0 0 0.00000 0 305 - 0.00000 - - 2s 0 0 0.00000 0 325 - 0.00000 - - 3s 0 0 0.00000 0 321 - 0.00000 - - 3s 0 2 0.00000 0 321 - 0.00000 - - 3s 105 3 infeasible 5 - 0.00000 - 159 5s Cutting planes: Clique: 10 Zero half: 19 Explored 245 nodes (57508 simplex iterations) in 6.17 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