current bounds on the number of colors: 0 -- 122 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:39:24 2012 Optimize a model with 46177 rows, 8197 columns and 145607 nonzeros Presolve time: 0.16s Presolved: 46177 rows, 8197 columns, 145607 nonzeros Variable types: 0 continuous, 8197 integer (8197 binary) Root relaxation: objective 0.000000e+00, 323 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 (664 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% current bounds on the number of colors: 0 -- 61 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:39:25 2012 Optimize a model with 22772 rows, 4415 columns and 71610 nonzeros Presolve time: 0.10s Presolved: 22772 rows, 4415 columns, 71610 nonzeros Variable types: 0 continuous, 4415 integer (4415 binary) Root relaxation: objective 0.000000e+00, 294 iterations, 0.02 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 (556 simplex iterations) in 0.15 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 -- 30 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:39:26 2012 Optimize a model with 11447 rows, 2585 columns and 35805 nonzeros Presolve time: 0.04s Presolved: 11447 rows, 2585 columns, 35805 nonzeros Variable types: 0 continuous, 2585 integer (2585 binary) Root relaxation: objective 0.000000e+00, 251 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 (479 simplex iterations) in 0.06 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 -- 15 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:39:26 2012 Optimize a model with 5407 rows, 1609 columns and 16709 nonzeros Presolve time: 0.01s Presolved: 5407 rows, 1609 columns, 16709 nonzeros Variable types: 0 continuous, 1609 integer (1609 binary) Root relaxation: objective 0.000000e+00, 260 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 45 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (2085 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 -- 7 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:39:26 2012 Optimize a model with 2387 rows, 1121 columns and 7161 nonzeros Presolve time: 0.01s Presolved: 2387 rows, 1121 columns, 7161 nonzeros Variable types: 0 continuous, 1121 integer (1121 binary) Root relaxation: objective 0.000000e+00, 272 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 0 240 - 0.00000 - - 0s 0 0 0.00000 0 260 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4173 simplex iterations) in 0.48 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 21:39:26 2012 Optimize a model with 3897 rows, 1365 columns and 11935 nonzeros Presolve time: 0.01s Presolved: 3897 rows, 1365 columns, 11935 nonzeros Variable types: 0 continuous, 1365 integer (1365 binary) Root relaxation: objective 0.000000e+00, 267 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 0 238 - 0.00000 - - 0s 0 0 0.00000 0 224 - 0.00000 - - 0s 0 0 0.00000 0 267 - 0.00000 - - 0s 0 0 0.00000 0 283 - 0.00000 - - 0s 0 0 0.00000 0 291 - 0.00000 - - 1s 0 0 0.00000 0 300 - 0.00000 - - 1s 0 0 0.00000 0 300 - 0.00000 - - 1s 0 2 0.00000 0 300 - 0.00000 - - 2s 454 98 infeasible 25 - 0.00000 - 95.4 5s 608 139 0.00000 20 270 - 0.00000 - 92.6 10s 616 144 0.00000 23 259 - 0.00000 - 91.4 15s 935 113 0.00000 25 282 - 0.00000 - 156 20s 1337 91 0.00000 34 229 - 0.00000 - 165 25s 1787 109 0.00000 30 208 - 0.00000 - 166 30s 2232 120 0.00000 38 215 - 0.00000 - 169 35s 2612 110 infeasible 35 - 0.00000 - 174 40s 2996 120 infeasible 32 - 0.00000 - 177 45s * 3098 0 39 0.0000000 0.00000 0.0% 177 46s Cutting planes: Gomory: 1 Clique: 1 Zero half: 10 Explored 3099 nodes (563715 simplex iterations) in 46.25 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: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 21:40:13 2012 Optimize a model with 3142 rows, 1243 columns and 9548 nonzeros Presolve time: 0.01s Presolved: 3142 rows, 1243 columns, 9548 nonzeros Variable types: 0 continuous, 1243 integer (1243 binary) Root relaxation: objective 0.000000e+00, 278 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 242 - 0.00000 - - 0s 0 0 0.00000 0 234 - 0.00000 - - 0s 0 0 0.00000 0 363 - 0.00000 - - 0s 0 0 0.00000 0 360 - 0.00000 - - 1s 0 0 0.00000 0 357 - 0.00000 - - 1s 0 0 0.00000 0 360 - 0.00000 - - 1s 0 0 0.00000 0 355 - 0.00000 - - 2s 0 0 0.00000 0 352 - 0.00000 - - 3s 0 0 0.00000 0 353 - 0.00000 - - 4s 0 0 0.00000 0 354 - 0.00000 - - 5s 0 0 0.00000 0 338 - 0.00000 - - 5s 0 0 0.00000 0 348 - 0.00000 - - 6s 0 0 0.00000 0 347 - 0.00000 - - 6s 0 2 0.00000 0 347 - 0.00000 - - 7s Cutting planes: Clique: 15 Zero half: 21 Explored 25 nodes (35818 simplex iterations) in 7.86 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