current bounds on the number of colors: 0 -- 79 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:39:38 2012 Optimize a model with 12364 rows, 3396 columns and 39936 nonzeros Presolve time: 0.07s Presolved: 12364 rows, 3396 columns, 39936 nonzeros Variable types: 0 continuous, 3396 integer (3396 binary) Root relaxation: objective 0.000000e+00, 221 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 (420 simplex iterations) in 0.09 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 -- 39 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:39:38 2012 Optimize a model with 6064 rows, 1816 columns and 19456 nonzeros Presolve time: 0.02s Presolved: 6064 rows, 1816 columns, 19456 nonzeros Variable types: 0 continuous, 1816 integer (1816 binary) Root relaxation: objective 0.000000e+00, 182 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 (338 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 -- 19 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:39:38 2012 Optimize a model with 2914 rows, 1026 columns and 9216 nonzeros Presolve time: 0.01s Presolved: 2914 rows, 1026 columns, 9216 nonzeros Variable types: 0 continuous, 1026 integer (1026 binary) Root relaxation: objective 0.000000e+00, 168 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 (309 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 -- 9 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:39:39 2012 Optimize a model with 1339 rows, 631 columns and 4096 nonzeros Presolve time: 0.00s Presolved: 1339 rows, 631 columns, 4096 nonzeros Variable types: 0 continuous, 631 integer (631 binary) Root relaxation: objective 0.000000e+00, 169 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 84 - 0.00000 - - 0s 0 0 0.00000 0 70 - 0.00000 - - 0s 0 0 0.00000 0 157 - 0.00000 - - 0s 0 0 0.00000 0 167 - 0.00000 - - 0s 0 0 0.00000 0 168 - 0.00000 - - 0s 0 0 0.00000 0 155 - 0.00000 - - 0s 0 2 0.00000 0 155 - 0.00000 - - 0s * 120 1 14 0.0000000 0.00000 0.0% 43.6 0s Cutting planes: Gomory: 7 Zero half: 31 Explored 121 nodes (10905 simplex iterations) in 0.54 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 -- 4 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:39:39 2012 Optimize a model with 709 rows, 473 columns and 2048 nonzeros Presolve removed 79 rows and 79 columns Presolve time: 0.00s Presolved: 630 rows, 394 columns, 1890 nonzeros Variable types: 0 continuous, 394 integer (394 binary) Root relaxation: objective 0.000000e+00, 82 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 79 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (323 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 -- 4 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:39:39 2012 Optimize a model with 1024 rows, 552 columns and 3072 nonzeros Presolve time: 0.00s Presolved: 1024 rows, 552 columns, 3072 nonzeros Variable types: 0 continuous, 552 integer (552 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 0.00000 0 154 - 0.00000 - - 0s 0 0 0.00000 0 158 - 0.00000 - - 0s 0 0 0.00000 0 219 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Cutting planes: Gomory: 13 Clique: 1 Zero half: 291 Explored 0 nodes (2482 simplex iterations) in 0.18 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - optimal solution found: number of colors: 4