current bounds on the number of colors: 0 -- 118 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:45:42 2012 Optimize a model with 39353 rows, 7627 columns and 124667 nonzeros Presolve time: 0.15s Presolved: 39353 rows, 7627 columns, 124667 nonzeros Variable types: 0 continuous, 7627 integer (7627 binary) Root relaxation: objective 0.000000e+00, 295 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 (552 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 20:45:42 2012 Optimize a model with 19403 rows, 4087 columns and 61277 nonzeros Presolve time: 0.08s Presolved: 19403 rows, 4087 columns, 61277 nonzeros Variable types: 0 continuous, 4087 integer (4087 binary) Root relaxation: objective 0.000000e+00, 294 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 (665 simplex iterations) in 0.13 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 20:45:43 2012 Optimize a model with 9428 rows, 2317 columns and 29582 nonzeros Presolve time: 0.03s Presolved: 9428 rows, 2317 columns, 29582 nonzeros Variable types: 0 continuous, 2317 integer (2317 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 (469 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 20:45:43 2012 Optimize a model with 4773 rows, 1491 columns and 14791 nonzeros Presolve time: 0.01s Presolved: 4773 rows, 1491 columns, 14791 nonzeros Variable types: 0 continuous, 1491 integer (1491 binary) Root relaxation: objective 0.000000e+00, 251 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 (835 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 20:45:43 2012 Optimize a model with 2113 rows, 1019 columns and 6339 nonzeros Presolve time: 0.01s Presolved: 2113 rows, 1019 columns, 6339 nonzeros Variable types: 0 continuous, 1019 integer (1019 binary) Root relaxation: objective 0.000000e+00, 273 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 0 182 - 0.00000 - - 0s 0 0 0.00000 0 236 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4033 simplex iterations) in 0.37 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 20:45:43 2012 Optimize a model with 3443 rows, 1255 columns and 10565 nonzeros Presolve time: 0.01s Presolved: 3443 rows, 1255 columns, 10565 nonzeros Variable types: 0 continuous, 1255 integer (1255 binary) Root relaxation: objective 0.000000e+00, 251 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 0 151 - 0.00000 - - 0s 0 0 0.00000 0 257 - 0.00000 - - 0s 0 0 0.00000 0 168 - 0.00000 - - 0s 0 0 0.00000 0 288 - 0.00000 - - 0s 0 0 0.00000 0 138 - 0.00000 - - 1s 0 0 0.00000 0 251 - 0.00000 - - 1s 0 0 0.00000 0 294 - 0.00000 - - 1s 0 0 0.00000 0 294 - 0.00000 - - 1s 0 2 0.00000 0 294 - 0.00000 - - 2s * 121 2 27 0.0000000 0.00000 0.0% 106 2s Cutting planes: Clique: 3 Zero half: 22 Explored 122 nodes (32630 simplex iterations) in 2.92 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 20:45:46 2012 Optimize a model with 2778 rows, 1137 columns and 8452 nonzeros Presolve time: 0.01s Presolved: 2778 rows, 1137 columns, 8452 nonzeros Variable types: 0 continuous, 1137 integer (1137 binary) Root relaxation: objective 0.000000e+00, 273 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 0 232 - 0.00000 - - 0s 0 0 0.00000 0 232 - 0.00000 - - 0s 0 0 0.00000 0 325 - 0.00000 - - 0s 0 0 0.00000 0 348 - 0.00000 - - 1s 0 0 0.00000 0 328 - 0.00000 - - 1s 0 0 0.00000 0 325 - 0.00000 - - 2s 0 0 0.00000 0 320 - 0.00000 - - 2s 0 0 0.00000 0 315 - 0.00000 - - 3s 0 0 0.00000 0 334 - 0.00000 - - 3s 0 0 0.00000 0 327 - 0.00000 - - 3s 0 0 0.00000 0 326 - 0.00000 - - 4s 0 0 0.00000 0 325 - 0.00000 - - 4s 0 0 0.00000 0 335 - 0.00000 - - 5s 0 0 0.00000 0 330 - 0.00000 - - 5s 0 0 0.00000 0 330 - 0.00000 - - 5s 0 0 0.00000 0 330 - 0.00000 - - 6s 0 2 0.00000 0 330 - 0.00000 - - 6s Cutting planes: Clique: 19 Zero half: 32 Explored 126 nodes (64020 simplex iterations) in 9.04 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