current bounds on the number of colors: 0 -- 173 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 22:09:57 2012 Optimize a model with 67253 rows, 15658 columns and 216118 nonzeros Presolve time: 0.20s Presolved: 67253 rows, 15658 columns, 216118 nonzeros Variable types: 0 continuous, 15658 integer (15658 binary) Root relaxation: objective 0.000000e+00, 667 iterations, 0.06 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 (1039 simplex iterations) in 0.36 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 -- 86 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 22:09:58 2012 Optimize a model with 33713 rows, 8219 columns and 108059 nonzeros Presolve time: 0.14s Presolved: 33713 rows, 8219 columns, 108059 nonzeros Variable types: 0 continuous, 8219 integer (8219 binary) Root relaxation: objective 0.000000e+00, 586 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 (992 simplex iterations) in 0.23 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 -- 43 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 22:09:59 2012 Optimize a model with 16553 rows, 4413 columns and 52773 nonzeros Presolve time: 0.06s Presolved: 16553 rows, 4413 columns, 52773 nonzeros Variable types: 0 continuous, 4413 integer (4413 binary) Root relaxation: objective 0.000000e+00, 380 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 (694 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 -- 21 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 22:09:59 2012 Optimize a model with 7973 rows, 2510 columns and 25130 nonzeros Presolve time: 0.02s Presolved: 7973 rows, 2510 columns, 25130 nonzeros Variable types: 0 continuous, 2510 integer (2510 binary) Root relaxation: objective 0.000000e+00, 375 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 (710 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 22:09:59 2012 Optimize a model with 4073 rows, 1645 columns and 12565 nonzeros Presolve time: 0.01s Presolved: 4073 rows, 1645 columns, 12565 nonzeros Variable types: 0 continuous, 1645 integer (1645 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 0.00000 0 302 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1863 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 -- 5 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 22:09:59 2012 Optimize a model with 1733 rows, 1126 columns and 5026 nonzeros Presolve removed 173 rows and 173 columns Presolve time: 0.00s Presolved: 1560 rows, 953 columns, 4680 nonzeros Variable types: 0 continuous, 953 integer (953 binary) Root relaxation: objective 0.000000e+00, 182 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 0 173 - 0.00000 - - 0s Explored 0 nodes (743 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 22:09:59 2012 Optimize a model with 2513 rows, 1299 columns and 7539 nonzeros Presolve time: 0.01s Presolved: 2513 rows, 1299 columns, 7539 nonzeros Variable types: 0 continuous, 1299 integer (1299 binary) Root relaxation: objective 0.000000e+00, 384 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 0 288 - 0.00000 - - 0s 0 0 0.00000 0 390 - 0.00000 - - 0s 0 0 0.00000 0 448 - 0.00000 - - 0s 0 0 0.00000 0 457 - 0.00000 - - 1s 0 0 infeasible 0 - 0.10000 - - 1s Cutting planes: Zero half: 937 Explored 0 nodes (8772 simplex iterations) in 1.17 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 22:10:01 2012 Optimize a model with 3293 rows, 1472 columns and 10052 nonzeros Presolve time: 0.01s Presolved: 3293 rows, 1472 columns, 10052 nonzeros Variable types: 0 continuous, 1472 integer (1472 binary) Root relaxation: objective 0.000000e+00, 398 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 0 322 - 0.00000 - - 0s 0 0 0.00000 0 338 - 0.00000 - - 0s 0 0 0.00000 0 322 - 0.00000 - - 0s 0 0 0.00000 0 442 - 0.00000 - - 0s 0 0 0.00000 0 314 - 0.00000 - - 1s 0 0 0.00000 0 302 - 0.00000 - - 1s 0 0 0.00000 0 298 - 0.00000 - - 1s 0 0 0.00000 0 296 - 0.00000 - - 2s 0 0 0.00000 0 296 - 0.00000 - - 2s 0 0 0.00000 0 288 - 0.00000 - - 2s 0 0 0.00000 0 295 - 0.00000 - - 2s 0 0 0.00000 0 274 - 0.00000 - - 3s 0 0 0.00000 0 272 - 0.00000 - - 3s 0 0 0.00000 0 285 - 0.00000 - - 3s 0 0 0.00000 0 273 - 0.00000 - - 4s 0 0 0.00000 0 277 - 0.00000 - - 4s 0 0 0.00000 0 277 - 0.00000 - - 4s 0 2 0.00000 0 277 - 0.00000 - - 5s 703 141 0.00000 13 322 - 0.00000 - 120 10s 709 145 0.00000 3 305 - 0.00000 - 119 15s 713 148 0.00000 12 270 - 0.00000 - 118 20s 798 142 0.00000 22 353 - 0.00000 - 192 25s 1205 58 0.00000 29 296 - 0.00000 - 192 30s 1614 47 infeasible 33 - 0.00000 - 194 35s 1939 56 infeasible 25 - 0.00000 - 200 40s 2253 48 infeasible 32 - 0.00000 - 206 45s 2663 58 infeasible 27 - 0.00000 - 204 50s 3044 51 0.00000 25 333 - 0.00000 - 204 55s 3354 47 infeasible 26 - 0.00000 - 207 60s 3699 46 infeasible 23 - 0.00000 - 209 65s 4086 39 infeasible 24 - 0.00000 - 208 70s 4471 34 0.00000 22 350 - 0.00000 - 207 75s 4837 46 infeasible 28 - 0.00000 - 208 80s 5203 22 infeasible 30 - 0.00000 - 208 85s 5534 3 infeasible 27 - 0.00000 - 209 90s Cutting planes: Gomory: 1 Zero half: 6 Explored 5548 nodes (1206145 simplex iterations) in 90.29 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