current bounds on the number of colors: 0 -- 188 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:09:17 2012 Optimize a model with 86198 rows, 18587 columns and 275702 nonzeros Presolve time: 0.27s Presolved: 86198 rows, 18587 columns, 275702 nonzeros Variable types: 0 continuous, 18587 integer (18587 binary) Root relaxation: objective 0.000000e+00, 759 iterations, 0.09 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 (1204 simplex iterations) in 0.49 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 -- 94 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:09:18 2012 Optimize a model with 43193 rows, 9751 columns and 137851 nonzeros Presolve time: 0.15s Presolved: 43193 rows, 9751 columns, 137851 nonzeros Variable types: 0 continuous, 9751 integer (9751 binary) Root relaxation: objective 0.000000e+00, 582 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 (1031 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 -- 47 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:09:19 2012 Optimize a model with 21233 rows, 5239 columns and 67459 nonzeros Presolve time: 0.09s Presolved: 21233 rows, 5239 columns, 67459 nonzeros Variable types: 0 continuous, 5239 integer (5239 binary) Root relaxation: objective 0.000000e+00, 428 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 (777 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 -- 23 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:09:19 2012 Optimize a model with 10253 rows, 2983 columns and 32263 nonzeros Presolve time: 0.03s Presolved: 10253 rows, 2983 columns, 32263 nonzeros Variable types: 0 continuous, 2983 integer (2983 binary) Root relaxation: objective 0.000000e+00, 418 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 (777 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:09:19 2012 Optimize a model with 4763 rows, 1855 columns and 14665 nonzeros Presolve time: 0.01s Presolved: 4763 rows, 1855 columns, 14665 nonzeros Variable types: 0 continuous, 1855 integer (1855 binary) Root relaxation: objective 0.000000e+00, 413 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 0 342 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (2168 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:09:20 2012 Optimize a model with 2018 rows, 1291 columns and 5866 nonzeros Presolve removed 188 rows and 188 columns Presolve time: 0.01s Presolved: 1830 rows, 1103 columns, 5490 nonzeros Variable types: 0 continuous, 1103 integer (1103 binary) Root relaxation: objective 0.000000e+00, 201 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 0 188 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (834 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 04:09:20 2012 Optimize a model with 2933 rows, 1479 columns and 8799 nonzeros Presolve time: 0.01s Presolved: 2933 rows, 1479 columns, 8799 nonzeros Variable types: 0 continuous, 1479 integer (1479 binary) Root relaxation: objective 0.000000e+00, 418 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 0 372 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (5070 simplex iterations) in 0.59 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 04:09:20 2012 Optimize a model with 3848 rows, 1667 columns and 11732 nonzeros Presolve time: 0.01s Presolved: 3848 rows, 1667 columns, 11732 nonzeros Variable types: 0 continuous, 1667 integer (1667 binary) Root relaxation: objective 0.000000e+00, 433 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 0 352 - 0.00000 - - 0s 0 0 0.00000 0 362 - 0.00000 - - 0s 0 0 0.00000 0 342 - 0.00000 - - 0s 0 0 0.00000 0 448 - 0.00000 - - 1s 0 0 0.00000 0 334 - 0.00000 - - 1s 0 0 0.00000 0 328 - 0.00000 - - 2s 0 0 0.00000 0 318 - 0.00000 - - 2s 0 0 0.00000 0 314 - 0.00000 - - 2s 0 0 0.00000 0 314 - 0.00000 - - 3s 0 0 0.00000 0 338 - 0.00000 - - 4s 0 0 0.00000 0 294 - 0.00000 - - 4s 0 0 0.00000 0 274 - 0.00000 - - 5s 0 0 0.00000 0 278 - 0.00000 - - 5s 0 0 0.00000 0 278 - 0.00000 - - 6s 0 2 0.00000 0 278 - 0.00000 - - 6s 232 18 infeasible 15 - 0.00000 - 146 10s 607 35 0.00000 8 501 - 0.00000 - 129 15s 609 36 0.00000 20 443 - 0.00000 - 129 20s 612 38 0.00000 18 401 - 0.00000 - 128 25s 705 24 infeasible 28 - 0.00000 - 195 30s 893 22 0.00000 24 421 - 0.00000 - 216 35s 1090 13 infeasible 26 - 0.00000 - 229 40s Cutting planes: Gomory: 1 Zero half: 24 Explored 1212 nodes (337491 simplex iterations) in 43.65 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