current bounds on the number of colors: 0 -- 109 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:02:52 2012 Optimize a model with 31699 rows, 6471 columns and 100656 nonzeros Presolve time: 0.15s Presolved: 31699 rows, 6471 columns, 100656 nonzeros Variable types: 0 continuous, 6471 integer (6471 binary) Root relaxation: objective 0.000000e+00, 389 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 (656 simplex iterations) in 0.22 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 20:02:53 2012 Optimize a model with 15904 rows, 3528 columns and 50328 nonzeros Presolve time: 0.07s Presolved: 15904 rows, 3528 columns, 50328 nonzeros Variable types: 0 continuous, 3528 integer (3528 binary) Root relaxation: objective 0.000000e+00, 269 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 0.10 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 -- 27 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:02:53 2012 Optimize a model with 7714 rows, 2002 columns and 24232 nonzeros Presolve time: 0.02s Presolved: 7714 rows, 2002 columns, 24232 nonzeros Variable types: 0 continuous, 2002 integer (2002 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (433 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 20:02:53 2012 Optimize a model with 3619 rows, 1239 columns and 11184 nonzeros Presolve time: 0.01s Presolved: 3619 rows, 1239 columns, 11184 nonzeros Variable types: 0 continuous, 1239 integer (1239 binary) Root relaxation: objective 0.000000e+00, 225 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 (1833 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:02:53 2012 Optimize a model with 1864 rows, 912 columns and 5592 nonzeros Presolve time: 0.00s Presolved: 1864 rows, 912 columns, 5592 nonzeros Variable types: 0 continuous, 912 integer (912 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 0 214 - 0.00000 - - 0s 0 0 0.00000 0 218 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2942 simplex iterations) in 0.25 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 20:02:54 2012 Optimize a model with 2449 rows, 1021 columns and 7456 nonzeros Presolve time: 0.01s Presolved: 2449 rows, 1021 columns, 7456 nonzeros Variable types: 0 continuous, 1021 integer (1021 binary) Root relaxation: objective 0.000000e+00, 252 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 0 185 - 0.00000 - - 0s 0 0 0.00000 0 304 - 0.00000 - - 0s 0 0 0.00000 0 303 - 0.00000 - - 0s 0 0 0.00000 0 302 - 0.00000 - - 0s 0 0 0.00000 0 296 - 0.00000 - - 1s 0 0 0.00000 0 291 - 0.00000 - - 1s 0 0 0.00000 0 289 - 0.00000 - - 1s 0 0 0.00000 0 294 - 0.00000 - - 1s 0 0 0.00000 0 293 - 0.00000 - - 1s 0 0 0.00000 0 292 - 0.00000 - - 1s 0 0 0.00000 0 296 - 0.00000 - - 2s 0 0 0.00000 0 262 - 0.00000 - - 2s 0 0 0.00000 0 269 - 0.00000 - - 3s 0 0 0.00000 0 287 - 0.00000 - - 3s 0 0 0.00000 0 302 - 0.00000 - - 3s 0 0 0.00000 0 302 - 0.00000 - - 4s 0 2 0.00000 0 302 - 0.00000 - - 4s 27 5 0.00000 5 299 - 0.00000 - 223 5s Cutting planes: Clique: 13 Zero half: 19 Explored 51 nodes (37237 simplex iterations) in 5.30 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 20:02:59 2012 Optimize a model with 3034 rows, 1130 columns and 9320 nonzeros Presolve time: 0.01s Presolved: 3034 rows, 1130 columns, 9320 nonzeros Variable types: 0 continuous, 1130 integer (1130 binary) Root relaxation: objective 0.000000e+00, 246 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 0 202 - 0.00000 - - 0s 0 0 0.00000 0 200 - 0.00000 - - 0s 0 0 0.00000 0 236 - 0.00000 - - 0s 0 0 0.00000 0 290 - 0.00000 - - 0s 0 0 0.00000 0 226 - 0.00000 - - 0s 0 0 0.00000 0 249 - 0.00000 - - 0s * 0 0 0 0.0000000 0.00000 0.0% - 1s Cutting planes: Clique: 4 Zero half: 100 Explored 0 nodes (13884 simplex iterations) in 1.26 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