current bounds on the number of colors: 0 -- 183 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:35:35 2012 Optimize a model with 79171 rows, 17521 columns and 253617 nonzeros Presolve time: 0.25s Presolved: 79171 rows, 17521 columns, 253617 nonzeros Variable types: 0 continuous, 17521 integer (17521 binary) Root relaxation: objective 0.000000e+00, 686 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 (1095 simplex iterations) in 0.44 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 02:35:36 2012 Optimize a model with 39243 rows, 9103 columns and 125415 nonzeros Presolve time: 0.16s Presolved: 39243 rows, 9103 columns, 125415 nonzeros Variable types: 0 continuous, 9103 integer (9103 binary) Root relaxation: objective 0.000000e+00, 486 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 (979 simplex iterations) in 0.25 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 02:35:37 2012 Optimize a model with 19279 rows, 4894 columns and 61314 nonzeros Presolve time: 0.07s Presolved: 19279 rows, 4894 columns, 61314 nonzeros Variable types: 0 continuous, 4894 integer (4894 binary) Root relaxation: objective 0.000000e+00, 373 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 (716 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 02:35:37 2012 Optimize a model with 9731 rows, 2881 columns and 30657 nonzeros Presolve time: 0.03s Presolved: 9731 rows, 2881 columns, 30657 nonzeros Variable types: 0 continuous, 2881 integer (2881 binary) Root relaxation: objective 0.000000e+00, 389 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 (718 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 02:35:37 2012 Optimize a model with 4523 rows, 1783 columns and 13935 nonzeros Presolve time: 0.01s Presolved: 4523 rows, 1783 columns, 13935 nonzeros Variable types: 0 continuous, 1783 integer (1783 binary) Root relaxation: objective 0.000000e+00, 399 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 0 164 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (3769 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:35:38 2012 Optimize a model with 1919 rows, 1234 columns and 5574 nonzeros Presolve removed 183 rows and 183 columns Presolve time: 0.00s Presolved: 1736 rows, 1051 columns, 5208 nonzeros Variable types: 0 continuous, 1051 integer (1051 binary) Root relaxation: objective 0.000000e+00, 187 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 0 183 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (794 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 02:35:38 2012 Optimize a model with 2787 rows, 1417 columns and 8361 nonzeros Presolve time: 0.01s Presolved: 2787 rows, 1417 columns, 8361 nonzeros Variable types: 0 continuous, 1417 integer (1417 binary) Root relaxation: objective 0.000000e+00, 412 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 0 364 - 0.00000 - - 0s 0 0 0.00000 0 364 - 0.00000 - - 0s 0 0 0.00000 0 481 - 0.00000 - - 0s 0 0 0.00000 0 499 - 0.00000 - - 1s 0 0 infeasible 0 - 0.10000 - - 1s Cutting planes: Gomory: 1 Zero half: 953 Explored 0 nodes (8157 simplex iterations) in 1.28 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 02:35:39 2012 Optimize a model with 3655 rows, 1600 columns and 11148 nonzeros Presolve time: 0.01s Presolved: 3655 rows, 1600 columns, 11148 nonzeros Variable types: 0 continuous, 1600 integer (1600 binary) Root relaxation: objective 0.000000e+00, 434 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 0 348 - 0.00000 - - 0s 0 0 0.00000 0 346 - 0.00000 - - 0s 0 0 0.00000 0 326 - 0.00000 - - 0s 0 0 0.00000 0 479 - 0.00000 - - 0s 0 0 0.00000 0 302 - 0.00000 - - 1s 0 0 0.00000 0 300 - 0.00000 - - 1s 0 0 0.00000 0 284 - 0.00000 - - 2s 0 0 0.00000 0 284 - 0.00000 - - 2s 0 0 0.00000 0 264 - 0.00000 - - 3s 0 0 0.00000 0 265 - 0.00000 - - 3s 0 0 0.00000 0 270 - 0.00000 - - 4s 0 0 0.00000 0 287 - 0.00000 - - 4s 0 0 0.00000 0 287 - 0.00000 - - 4s 0 2 0.00000 0 287 - 0.00000 - - 5s 738 18 0.00000 20 314 - 0.00000 - 96.8 10s 806 49 0.00000 4 302 - 0.00000 - 101 15s 810 52 0.00000 12 268 - 0.00000 - 100 20s 814 55 0.00000 14 238 - 0.00000 - 100 26s 824 59 0.00000 15 336 - 0.00000 - 176 30s 1073 27 infeasible 25 - 0.00000 - 194 35s 1348 62 infeasible 31 - 0.00000 - 202 40s 1581 77 infeasible 26 - 0.00000 - 212 45s 1848 76 infeasible 22 - 0.00000 - 219 50s 2111 73 infeasible 26 - 0.00000 - 225 55s 2376 68 infeasible 27 - 0.00000 - 228 60s 2599 47 0.00000 22 393 - 0.00000 - 233 65s 2851 37 0.00000 24 437 - 0.00000 - 236 70s 3078 20 infeasible 25 - 0.00000 - 238 75s 3301 5 0.00000 24 387 - 0.00000 - 241 80s Cutting planes: Zero half: 13 Explored 3319 nodes (841460 simplex iterations) in 80.48 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