current bounds on the number of colors: 0 -- 162 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 19:35:02 2012 Optimize a model with 53136 rows, 13776 columns and 172044 nonzeros Presolve time: 0.17s Presolved: 53136 rows, 13776 columns, 172044 nonzeros Variable types: 0 continuous, 13776 integer (13776 binary) Root relaxation: objective 0.000000e+00, 524 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 (821 simplex iterations) in 0.28 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 -- 81 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 19:35:03 2012 Optimize a model with 26322 rows, 7134 columns and 84960 nonzeros Presolve time: 0.13s Presolved: 26322 rows, 7134 columns, 84960 nonzeros Variable types: 0 continuous, 7134 integer (7134 binary) Root relaxation: objective 0.000000e+00, 413 iterations, 0.02 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 (712 simplex iterations) in 0.18 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 -- 40 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 19:35:03 2012 Optimize a model with 13242 rows, 3894 columns and 42480 nonzeros Presolve time: 0.05s Presolved: 13242 rows, 3894 columns, 42480 nonzeros Variable types: 0 continuous, 3894 integer (3894 binary) Root relaxation: objective 0.000000e+00, 331 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 (608 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 -- 20 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 19:35:04 2012 Optimize a model with 6702 rows, 2274 columns and 21240 nonzeros Presolve time: 0.02s Presolved: 6702 rows, 2274 columns, 21240 nonzeros Variable types: 0 continuous, 2274 integer (2274 binary) Root relaxation: objective 0.000000e+00, 338 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 (606 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 -- 10 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 19:35:04 2012 Optimize a model with 3432 rows, 1464 columns and 10620 nonzeros Presolve time: 0.01s Presolved: 3432 rows, 1464 columns, 10620 nonzeros Variable types: 0 continuous, 1464 integer (1464 binary) Root relaxation: objective 0.000000e+00, 367 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 (2405 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 -- 5 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 19:35:04 2012 Optimize a model with 1470 rows, 978 columns and 4248 nonzeros Presolve removed 162 rows and 162 columns Presolve time: 0.00s Presolved: 1308 rows, 816 columns, 3924 nonzeros Variable types: 0 continuous, 816 integer (816 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 0 162 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (724 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 Fri Dec 14 19:35:04 2012 Optimize a model with 2124 rows, 1140 columns and 6372 nonzeros Presolve time: 0.01s Presolved: 2124 rows, 1140 columns, 6372 nonzeros Variable types: 0 continuous, 1140 integer (1140 binary) Root relaxation: objective 0.000000e+00, 385 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 0 314 - 0.00000 - - 0s 0 0 0.00000 0 320 - 0.00000 - - 0s 0 0 0.00000 0 450 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Cutting planes: Gomory: 41 Zero half: 355 Explored 0 nodes (5964 simplex iterations) in 0.70 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 Fri Dec 14 19:35:05 2012 Optimize a model with 2778 rows, 1302 columns and 8496 nonzeros Presolve time: 0.01s Presolved: 2778 rows, 1302 columns, 8496 nonzeros Variable types: 0 continuous, 1302 integer (1302 binary) Root relaxation: objective 0.000000e+00, 357 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 0 306 - 0.00000 - - 0s 0 0 0.00000 0 232 - 0.00000 - - 0s 0 0 0.00000 0 351 - 0.00000 - - 0s 0 0 0.00000 0 353 - 0.00000 - - 0s 0 0 0.00000 0 325 - 0.00000 - - 1s 0 0 0.00000 0 363 - 0.00000 - - 1s 0 0 0.00000 0 366 - 0.00000 - - 2s 0 0 0.00000 0 377 - 0.00000 - - 2s 0 0 0.00000 0 377 - 0.00000 - - 2s 0 2 0.00000 0 377 - 0.00000 - - 3s H 253 1 0.0000000 0.00000 0.0% 91.5 4s Cutting planes: Zero half: 9 Explored 253 nodes (46896 simplex iterations) in 4.22 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% optimal solution found: number of colors: 4