current bounds on the number of colors: 0 -- 182 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:01:34 2012 Optimize a model with 77077 rows, 17407 columns and 247247 nonzeros Presolve time: 0.24s Presolved: 77077 rows, 17407 columns, 247247 nonzeros Variable types: 0 continuous, 17407 integer (17407 binary) Root relaxation: objective 0.000000e+00, 757 iterations, 0.08 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 (1174 simplex iterations) in 0.43 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 -- 91 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:01:36 2012 Optimize a model with 38207 rows, 9035 columns and 122265 nonzeros Presolve time: 0.15s Presolved: 38207 rows, 9035 columns, 122265 nonzeros Variable types: 0 continuous, 9035 integer (9035 binary) Root relaxation: objective 0.000000e+00, 629 iterations, 0.04 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 (1043 simplex iterations) in 0.24 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 -- 45 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:01:36 2012 Optimize a model with 18772 rows, 4849 columns and 59774 nonzeros Presolve time: 0.07s Presolved: 18772 rows, 4849 columns, 59774 nonzeros Variable types: 0 continuous, 4849 integer (4849 binary) Root relaxation: objective 0.000000e+00, 377 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 (695 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 -- 22 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:01:37 2012 Optimize a model with 9477 rows, 2847 columns and 29887 nonzeros Presolve time: 0.03s Presolved: 9477 rows, 2847 columns, 29887 nonzeros Variable types: 0 continuous, 2847 integer (2847 binary) Root relaxation: objective 0.000000e+00, 403 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 (732 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:01:37 2012 Optimize a model with 4407 rows, 1755 columns and 13585 nonzeros Presolve time: 0.01s Presolved: 4407 rows, 1755 columns, 13585 nonzeros Variable types: 0 continuous, 1755 integer (1755 binary) Root relaxation: objective 0.000000e+00, 391 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 0 176 - 0.00000 - - 0s * 0 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Gomory: 6 Clique: 15 Zero half: 60 Explored 0 nodes (4430 simplex iterations) in 0.34 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 Sat Dec 15 02:01:37 2012 Optimize a model with 1872 rows, 1209 columns and 5434 nonzeros Presolve removed 182 rows and 182 columns Presolve time: 0.00s Presolved: 1690 rows, 1027 columns, 5070 nonzeros Variable types: 0 continuous, 1027 integer (1027 binary) Root relaxation: objective 0.000000e+00, 194 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 0 182 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (796 simplex iterations) in 0.02 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 Sat Dec 15 02:01:37 2012 Optimize a model with 2717 rows, 1391 columns and 8151 nonzeros Presolve time: 0.01s Presolved: 2717 rows, 1391 columns, 8151 nonzeros Variable types: 0 continuous, 1391 integer (1391 binary) Root relaxation: objective 0.000000e+00, 414 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 0 288 - 0.00000 - - 0s 0 0 0.00000 0 358 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (6117 simplex iterations) in 0.58 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 Sat Dec 15 02:01:38 2012 Optimize a model with 3562 rows, 1573 columns and 10868 nonzeros Presolve time: 0.01s Presolved: 3562 rows, 1573 columns, 10868 nonzeros Variable types: 0 continuous, 1573 integer (1573 binary) Root relaxation: objective 0.000000e+00, 403 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 0 350 - 0.00000 - - 0s 0 0 0.00000 0 340 - 0.00000 - - 0s 0 0 0.00000 0 346 - 0.00000 - - 0s 0 0 0.00000 0 360 - 0.00000 - - 0s 0 0 0.00000 0 334 - 0.00000 - - 1s 0 0 0.00000 0 322 - 0.00000 - - 1s 0 0 0.00000 0 324 - 0.00000 - - 1s 0 0 0.00000 0 326 - 0.00000 - - 2s 0 0 0.00000 0 328 - 0.00000 - - 2s 0 0 0.00000 0 322 - 0.00000 - - 2s 0 0 0.00000 0 318 - 0.00000 - - 3s 0 0 0.00000 0 316 - 0.00000 - - 3s 0 0 0.00000 0 312 - 0.00000 - - 3s 0 0 0.00000 0 317 - 0.00000 - - 4s 0 0 0.00000 0 315 - 0.00000 - - 4s 0 2 0.00000 0 315 - 0.00000 - - 4s 12 12 0.00000 7 314 - 0.00000 - 277 5s 706 84 0.00000 21 485 - 0.00000 - 116 10s 710 87 0.00000 12 290 - 0.00000 - 115 15s 714 89 0.00000 10 280 - 0.00000 - 115 20s 719 93 infeasible 14 - 0.00000 - 189 25s 1062 44 infeasible 27 - 0.00000 - 192 30s 1375 70 infeasible 30 - 0.00000 - 199 35s 1698 47 infeasible 25 - 0.00000 - 203 40s 2006 69 0.00000 25 300 - 0.00000 - 207 45s 2331 68 infeasible 28 - 0.00000 - 211 50s 2618 63 infeasible 27 - 0.00000 - 215 55s 2967 52 0.00000 20 334 - 0.00000 - 216 60s 3282 35 infeasible 22 - 0.00000 - 217 65s 3547 38 0.00000 22 407 - 0.00000 - 220 70s 3808 21 0.00000 22 312 - 0.00000 - 223 75s Cutting planes: Zero half: 18 Explored 4086 nodes (956968 simplex iterations) in 79.94 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