current bounds on the number of colors: 0 -- 86 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:42:17 2012 Optimize a model with 16469 rows, 4079 columns and 52847 nonzeros Presolve time: 0.09s Presolved: 16469 rows, 4079 columns, 52847 nonzeros Variable types: 0 continuous, 4079 integer (4079 binary) Root relaxation: objective 0.000000e+00, 242 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 (421 simplex iterations) in 0.12 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 -- 43 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:42:17 2012 Optimize a model with 8087 rows, 2187 columns and 25809 nonzeros Presolve time: 0.03s Presolved: 8087 rows, 2187 columns, 25809 nonzeros Variable types: 0 continuous, 2187 integer (2187 binary) Root relaxation: objective 0.000000e+00, 196 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 (467 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 -- 21 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:42:18 2012 Optimize a model with 3896 rows, 1241 columns and 12290 nonzeros Presolve time: 0.01s Presolved: 3896 rows, 1241 columns, 12290 nonzeros Variable types: 0 continuous, 1241 integer (1241 binary) Root relaxation: objective 0.000000e+00, 178 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 (350 simplex iterations) in 0.02 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 -- 10 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:42:18 2012 Optimize a model with 1991 rows, 811 columns and 6145 nonzeros Presolve time: 0.01s Presolved: 1991 rows, 811 columns, 6145 nonzeros Variable types: 0 continuous, 811 integer (811 binary) Root relaxation: objective 0.000000e+00, 191 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 94 - 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 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:42:18 2012 Optimize a model with 848 rows, 553 columns and 2458 nonzeros Presolve removed 86 rows and 86 columns Presolve time: 0.00s Presolved: 762 rows, 467 columns, 2286 nonzeros Variable types: 0 continuous, 467 integer (467 binary) Root relaxation: objective 0.000000e+00, 87 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 86 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (365 simplex iterations) in 0.01 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: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:42:18 2012 Optimize a model with 1229 rows, 639 columns and 3687 nonzeros Presolve time: 0.00s Presolved: 1229 rows, 639 columns, 3687 nonzeros Variable types: 0 continuous, 639 integer (639 binary) Root relaxation: objective 0.000000e+00, 191 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 0 172 - 0.00000 - - 0s 0 0 0.00000 0 168 - 0.00000 - - 0s 0 0 0.00000 0 246 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Cutting planes: Gomory: 31 Zero half: 440 Explored 0 nodes (3147 simplex iterations) in 0.26 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 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:42:18 2012 Optimize a model with 1610 rows, 725 columns and 4916 nonzeros Presolve time: 0.00s Presolved: 1610 rows, 725 columns, 4916 nonzeros Variable types: 0 continuous, 725 integer (725 binary) Root relaxation: objective 0.000000e+00, 195 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 0 170 - 0.00000 - - 0s 0 0 0.00000 0 166 - 0.00000 - - 0s 0 0 0.00000 0 207 - 0.00000 - - 0s 0 0 0.00000 0 224 - 0.00000 - - 0s 0 0 0.00000 0 188 - 0.00000 - - 0s 0 0 0.00000 0 213 - 0.00000 - - 0s 0 0 0.00000 0 209 - 0.00000 - - 0s 0 0 0.00000 0 194 - 0.00000 - - 0s 0 0 0.00000 0 211 - 0.00000 - - 0s 0 0 0.00000 0 206 - 0.00000 - - 1s 0 0 0.00000 0 208 - 0.00000 - - 1s 0 0 0.00000 0 208 - 0.00000 - - 1s 0 2 0.00000 0 208 - 0.00000 - - 1s 615 21 0.00000 0 152 - 0.00000 - 68.5 5s Cutting planes: Clique: 1 Zero half: 7 Explored 713 nodes (80238 simplex iterations) in 6.18 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