current bounds on the number of colors: 0 -- 113 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:11:12 2012 Optimize a model with 36569 rows, 6979 columns and 115696 nonzeros Presolve time: 0.14s Presolved: 36569 rows, 6979 columns, 115696 nonzeros Variable types: 0 continuous, 6979 integer (6979 binary) Root relaxation: objective 0.000000e+00, 294 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 (535 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 -- 56 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:11:13 2012 Optimize a model with 18341 rows, 3815 columns and 57848 nonzeros Presolve time: 0.08s Presolved: 18341 rows, 3815 columns, 57848 nonzeros Variable types: 0 continuous, 3815 integer (3815 binary) Root relaxation: objective 0.000000e+00, 271 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 (496 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 20:11:13 2012 Optimize a model with 9227 rows, 2233 columns and 28924 nonzeros Presolve time: 0.03s Presolved: 9227 rows, 2233 columns, 28924 nonzeros Variable types: 0 continuous, 2233 integer (2233 binary) Root relaxation: objective 0.000000e+00, 234 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 (457 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 20:11:13 2012 Optimize a model with 4670 rows, 1442 columns and 14462 nonzeros Presolve time: 0.01s Presolved: 4670 rows, 1442 columns, 14462 nonzeros Variable types: 0 continuous, 1442 integer (1442 binary) Root relaxation: objective 0.000000e+00, 244 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 (911 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 20:11:13 2012 Optimize a model with 2066 rows, 990 columns and 6198 nonzeros Presolve time: 0.00s Presolved: 2066 rows, 990 columns, 6198 nonzeros Variable types: 0 continuous, 990 integer (990 binary) Root relaxation: objective 0.000000e+00, 240 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 0 272 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4423 simplex iterations) in 0.42 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 20:11:14 2012 Optimize a model with 3368 rows, 1216 columns and 10330 nonzeros Presolve time: 0.01s Presolved: 3368 rows, 1216 columns, 10330 nonzeros Variable types: 0 continuous, 1216 integer (1216 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 0 220 - 0.00000 - - 0s 0 0 0.00000 0 212 - 0.00000 - - 0s 0 0 0.00000 0 196 - 0.00000 - - 0s 0 0 0.00000 0 282 - 0.00000 - - 0s 0 0 0.00000 0 189 - 0.00000 - - 1s 0 0 0.00000 0 267 - 0.00000 - - 1s 0 0 0.00000 0 261 - 0.00000 - - 1s 0 0 0.00000 0 256 - 0.00000 - - 1s 0 0 0.00000 0 268 - 0.00000 - - 2s 0 0 0.00000 0 253 - 0.00000 - - 2s 0 2 0.00000 0 253 - 0.00000 - - 2s 703 88 0.00000 22 196 - 0.00000 - 67.4 5s * 742 79 27 0.0000000 0.00000 0.0% 96.5 9s Cutting planes: Gomory: 4 Clique: 2 Zero half: 6 Explored 743 nodes (93531 simplex iterations) in 9.86 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 20:11:24 2012 Optimize a model with 2717 rows, 1103 columns and 8264 nonzeros Presolve time: 0.01s Presolved: 2717 rows, 1103 columns, 8264 nonzeros Variable types: 0 continuous, 1103 integer (1103 binary) Root relaxation: objective 0.000000e+00, 243 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 0 218 - 0.00000 - - 0s 0 0 0.00000 0 138 - 0.00000 - - 0s 0 0 0.00000 0 278 - 0.00000 - - 0s 0 0 0.00000 0 336 - 0.00000 - - 0s 0 0 0.00000 0 327 - 0.00000 - - 1s 0 0 0.00000 0 320 - 0.00000 - - 1s 0 0 0.00000 0 311 - 0.00000 - - 2s 0 0 0.00000 0 322 - 0.00000 - - 2s 0 0 0.00000 0 320 - 0.00000 - - 3s 0 0 0.00000 0 312 - 0.00000 - - 3s 0 0 0.00000 0 314 - 0.00000 - - 3s 0 0 0.00000 0 314 - 0.00000 - - 4s 0 2 0.00000 0 314 - 0.00000 - - 4s Cutting planes: Clique: 7 Zero half: 24 Explored 11 nodes (29801 simplex iterations) in 4.56 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