current bounds on the number of colors: 0 -- 113 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:11:29 2012 Optimize a model with 34553 rows, 6943 columns and 109648 nonzeros Presolve time: 0.14s Presolved: 34553 rows, 6943 columns, 109648 nonzeros Variable types: 0 continuous, 6943 integer (6943 binary) Root relaxation: objective 0.000000e+00, 409 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 (710 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 -- 56 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:11:29 2012 Optimize a model with 17333 rows, 3779 columns and 54824 nonzeros Presolve time: 0.07s Presolved: 17333 rows, 3779 columns, 54824 nonzeros Variable types: 0 continuous, 3779 integer (3779 binary) Root relaxation: objective 0.000000e+00, 297 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 (554 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 -- 28 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:11:30 2012 Optimize a model with 8723 rows, 2197 columns and 27412 nonzeros Presolve time: 0.03s Presolved: 8723 rows, 2197 columns, 27412 nonzeros Variable types: 0 continuous, 2197 integer (2197 binary) Root relaxation: objective 0.000000e+00, 232 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 (442 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 20:11:30 2012 Optimize a model with 4418 rows, 1406 columns and 13706 nonzeros Presolve time: 0.01s Presolved: 4418 rows, 1406 columns, 13706 nonzeros Variable types: 0 continuous, 1406 integer (1406 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (599 simplex iterations) in 0.03 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 20:11:30 2012 Optimize a model with 1958 rows, 954 columns and 5874 nonzeros Presolve time: 0.00s Presolved: 1958 rows, 954 columns, 5874 nonzeros Variable types: 0 continuous, 954 integer (954 binary) Root relaxation: objective 0.000000e+00, 245 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 0 224 - 0.00000 - - 0s 0 0 0.00000 0 235 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3357 simplex iterations) in 0.30 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 20:11:30 2012 Optimize a model with 3188 rows, 1180 columns and 9790 nonzeros Presolve time: 0.01s Presolved: 3188 rows, 1180 columns, 9790 nonzeros Variable types: 0 continuous, 1180 integer (1180 binary) Root relaxation: objective 0.000000e+00, 239 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 0 212 - 0.00000 - - 0s 0 0 0.00000 0 190 - 0.00000 - - 0s 0 0 0.00000 0 172 - 0.00000 - - 0s 0 0 0.00000 0 240 - 0.00000 - - 0s 0 0 0.00000 0 162 - 0.00000 - - 0s 0 0 0.00000 0 160 - 0.00000 - - 0s 0 0 0.00000 0 152 - 0.00000 - - 1s * 0 0 0 0.0000000 0.00000 0.0% - 1s Cutting planes: Zero half: 86 Explored 0 nodes (13074 simplex iterations) in 1.06 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: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 20:11:32 2012 Optimize a model with 2573 rows, 1067 columns and 7832 nonzeros Presolve time: 0.01s Presolved: 2573 rows, 1067 columns, 7832 nonzeros Variable types: 0 continuous, 1067 integer (1067 binary) Root relaxation: objective 0.000000e+00, 260 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 0 224 - 0.00000 - - 0s 0 0 0.00000 0 226 - 0.00000 - - 0s 0 0 0.00000 0 234 - 0.00000 - - 0s 0 0 0.00000 0 345 - 0.00000 - - 0s 0 0 0.00000 0 321 - 0.00000 - - 1s 0 0 0.00000 0 202 - 0.00000 - - 1s 0 0 0.00000 0 276 - 0.00000 - - 1s 0 0 0.00000 0 279 - 0.00000 - - 2s 0 0 0.00000 0 273 - 0.00000 - - 2s 0 0 0.00000 0 288 - 0.00000 - - 3s 0 0 0.00000 0 287 - 0.00000 - - 3s 0 2 0.00000 0 287 - 0.00000 - - 3s Cutting planes: Clique: 9 Zero half: 21 Explored 49 nodes (36057 simplex iterations) in 4.35 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