current bounds on the number of colors: 0 -- 193 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 06:17:42 2012 Optimize a model with 91393 rows, 19478 columns and 292128 nonzeros Presolve time: 0.29s Presolved: 91393 rows, 19478 columns, 292128 nonzeros Variable types: 0 continuous, 19478 integer (19478 binary) Root relaxation: objective 0.000000e+00, 810 iterations, 0.10 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 (1243 simplex iterations) in 0.53 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 -- 96 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 06:17:44 2012 Optimize a model with 45793 rows, 10214 columns and 146064 nonzeros Presolve time: 0.16s Presolved: 45793 rows, 10214 columns, 146064 nonzeros Variable types: 0 continuous, 10214 integer (10214 binary) Root relaxation: objective 0.000000e+00, 550 iterations, 0.03 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 (973 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 -- 48 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 06:17:45 2012 Optimize a model with 22993 rows, 5582 columns and 73032 nonzeros Presolve time: 0.09s Presolved: 22993 rows, 5582 columns, 73032 nonzeros Variable types: 0 continuous, 5582 integer (5582 binary) Root relaxation: objective 0.000000e+00, 393 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 (742 simplex iterations) in 0.14 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 -- 24 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 06:17:45 2012 Optimize a model with 11593 rows, 3266 columns and 36516 nonzeros Presolve time: 0.04s Presolved: 11593 rows, 3266 columns, 36516 nonzeros Variable types: 0 continuous, 3266 integer (3266 binary) Root relaxation: objective 0.000000e+00, 405 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 (735 simplex iterations) in 0.06 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 -- 12 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 06:17:45 2012 Optimize a model with 5893 rows, 2108 columns and 18258 nonzeros Presolve time: 0.02s Presolved: 5893 rows, 2108 columns, 18258 nonzeros Variable types: 0 continuous, 2108 integer (2108 binary) Root relaxation: objective 0.000000e+00, 406 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 (2323 simplex iterations) in 0.13 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 06:17:45 2012 Optimize a model with 3043 rows, 1529 columns and 9129 nonzeros Presolve time: 0.01s Presolved: 3043 rows, 1529 columns, 9129 nonzeros Variable types: 0 continuous, 1529 integer (1529 binary) Root relaxation: objective 0.000000e+00, 446 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 0 374 - 0.00000 - - 0s 0 0 0.00000 0 382 - 0.00000 - - 0s 0 0 0.00000 0 528 - 0.00000 - - 1s 0 0 0.00000 0 541 - 0.00000 - - 1s 0 0 0.00000 0 528 - 0.00000 - - 2s 0 0 infeasible 0 - 0.10000 - - 2s Cutting planes: Zero half: 1173 Explored 0 nodes (13963 simplex iterations) in 2.67 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 06:17:48 2012 Optimize a model with 3993 rows, 1722 columns and 12172 nonzeros Presolve time: 0.01s Presolved: 3993 rows, 1722 columns, 12172 nonzeros Variable types: 0 continuous, 1722 integer (1722 binary) Root relaxation: objective 0.000000e+00, 423 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 0 376 - 0.00000 - - 0s 0 0 0.00000 0 362 - 0.00000 - - 0s 0 0 0.00000 0 338 - 0.00000 - - 1s 0 0 0.00000 0 415 - 0.00000 - - 1s 0 0 0.00000 0 324 - 0.00000 - - 2s 0 0 0.00000 0 318 - 0.00000 - - 2s 0 0 0.00000 0 312 - 0.00000 - - 3s 0 0 0.00000 0 306 - 0.00000 - - 3s 0 0 0.00000 0 298 - 0.00000 - - 4s 0 0 0.00000 0 316 - 0.00000 - - 5s 0 0 0.00000 0 290 - 0.00000 - - 6s 0 0 0.00000 0 292 - 0.00000 - - 6s 0 0 0.00000 0 326 - 0.00000 - - 7s 0 0 0.00000 0 284 - 0.00000 - - 8s 0 0 0.00000 0 278 - 0.00000 - - 8s 0 0 0.00000 0 282 - 0.00000 - - 9s 0 0 0.00000 0 282 - 0.00000 - - 9s 0 2 0.00000 0 282 - 0.00000 - - 10s 334 17 infeasible 18 - 0.00000 - 150 15s 713 19 0.00000 0 519 - 0.00000 - 138 20s 716 21 0.00000 0 302 - 0.00000 - 138 27s 718 22 0.00000 0 491 - 0.00000 - 137 31s 723 26 infeasible 13 - 0.00000 - 197 35s 897 11 infeasible 24 - 0.00000 - 212 40s 1081 13 infeasible 21 - 0.00000 - 227 45s 1276 18 infeasible 23 - 0.00000 - 235 50s 1460 10 infeasible 20 - 0.00000 - 245 55s 1690 8 infeasible 22 - 0.00000 - 247 60s Cutting planes: Gomory: 3 Clique: 3 Zero half: 4 Explored 1869 nodes (539948 simplex iterations) in 64.71 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - current bounds on the number of colors: 4 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 06:18:53 2012 Optimize a model with 4943 rows, 1915 columns and 15215 nonzeros Presolve time: 0.01s Presolved: 4943 rows, 1915 columns, 15215 nonzeros Variable types: 0 continuous, 1915 integer (1915 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 0 160 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (3614 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% optimal solution found: number of colors: 5