current bounds on the number of colors: 0 -- 202 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 10:09:55 2012 Optimize a model with 103121 rows, 21421 columns and 329159 nonzeros Presolve time: 0.34s Presolved: 103121 rows, 21421 columns, 329159 nonzeros Variable types: 0 continuous, 21421 integer (21421 binary) Root relaxation: objective 0.000000e+00, 744 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 (1376 simplex iterations) in 0.66 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 -- 101 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 10:09:57 2012 Optimize a model with 51152 rows, 11119 columns and 162950 nonzeros Presolve time: 0.17s Presolved: 51152 rows, 11119 columns, 162950 nonzeros Variable types: 0 continuous, 11119 integer (11119 binary) Root relaxation: objective 0.000000e+00, 526 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 (940 simplex iterations) in 0.27 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 -- 50 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 10:09:58 2012 Optimize a model with 25677 rows, 6069 columns and 81475 nonzeros Presolve time: 0.11s Presolved: 25677 rows, 6069 columns, 81475 nonzeros Variable types: 0 continuous, 6069 integer (6069 binary) Root relaxation: objective 0.000000e+00, 470 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 (875 simplex iterations) in 0.16 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 -- 25 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 10:09:58 2012 Optimize a model with 12430 rows, 3443 columns and 39108 nonzeros Presolve time: 0.04s Presolved: 12430 rows, 3443 columns, 39108 nonzeros Variable types: 0 continuous, 3443 integer (3443 binary) Root relaxation: objective 0.000000e+00, 421 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 (813 simplex iterations) in 0.07 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 10:09:59 2012 Optimize a model with 6316 rows, 2231 columns and 19554 nonzeros Presolve time: 0.02s Presolved: 6316 rows, 2231 columns, 19554 nonzeros Variable types: 0 continuous, 2231 integer (2231 binary) Root relaxation: objective 0.000000e+00, 430 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 (2547 simplex iterations) in 0.15 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 10:09:59 2012 Optimize a model with 3259 rows, 1625 columns and 9777 nonzeros Presolve time: 0.01s Presolved: 3259 rows, 1625 columns, 9777 nonzeros Variable types: 0 continuous, 1625 integer (1625 binary) Root relaxation: objective 0.000000e+00, 439 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 0 398 - 0.00000 - - 0s 0 0 0.00000 0 400 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (5558 simplex iterations) in 0.71 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 10:10:00 2012 Optimize a model with 4278 rows, 1827 columns and 13036 nonzeros Presolve time: 0.01s Presolved: 4278 rows, 1827 columns, 13036 nonzeros Variable types: 0 continuous, 1827 integer (1827 binary) Root relaxation: objective 0.000000e+00, 442 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 0 390 - 0.00000 - - 0s 0 0 0.00000 0 382 - 0.00000 - - 0s 0 0 0.00000 0 382 - 0.00000 - - 0s 0 0 0.00000 0 491 - 0.00000 - - 1s 0 0 0.00000 0 380 - 0.00000 - - 1s 0 0 0.00000 0 387 - 0.00000 - - 2s 0 0 0.00000 0 391 - 0.00000 - - 3s 0 0 0.00000 0 382 - 0.00000 - - 3s 0 0 0.00000 0 376 - 0.00000 - - 4s 0 0 0.00000 0 374 - 0.00000 - - 4s 0 0 0.00000 0 381 - 0.00000 - - 5s 0 0 0.00000 0 374 - 0.00000 - - 6s 0 2 0.00000 0 374 - 0.00000 - - 6s 270 70 0.00000 22 352 - 0.00000 - 157 10s 604 138 0.00000 11 551 - 0.00000 - 142 15s 607 140 0.00000 26 362 - 0.00000 - 141 21s 610 142 0.00000 12 381 - 0.00000 - 140 27s 612 143 0.00000 12 322 - 0.00000 - 140 32s 614 145 0.00000 17 312 - 0.00000 - 139 36s 646 152 infeasible 25 - 0.00000 - 258 40s 828 89 infeasible 24 - 0.00000 - 268 45s 983 33 0.00000 16 473 - 0.00000 - 278 50s 1151 4 0.00000 17 419 - 0.00000 - 282 55s Cutting planes: Zero half: 14 Explored 1264 nodes (402981 simplex iterations) in 58.27 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 10:10:58 2012 Optimize a model with 5297 rows, 2029 columns and 16295 nonzeros Presolve time: 0.01s Presolved: 5297 rows, 2029 columns, 16295 nonzeros Variable types: 0 continuous, 2029 integer (2029 binary) Root relaxation: objective 0.000000e+00, 438 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 0.0000000 0.00000 0.0% - 0s Cutting planes: Gomory: 2 Clique: 146 MIR: 3 Zero half: 381 Explored 0 nodes (3489 simplex iterations) in 0.27 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