current bounds on the number of colors: 0 -- 172 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 21:37:26 2012 Optimize a model with 70262 rows, 15607 columns and 225062 nonzeros Presolve time: 0.21s Presolved: 70262 rows, 15607 columns, 225062 nonzeros Variable types: 0 continuous, 15607 integer (15607 binary) Root relaxation: objective 0.000000e+00, 584 iterations, 0.05 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 (999 simplex iterations) in 0.37 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 21:37:27 2012 Optimize a model with 35217 rows, 8211 columns and 112531 nonzeros Presolve time: 0.15s Presolved: 35217 rows, 8211 columns, 112531 nonzeros Variable types: 0 continuous, 8211 integer (8211 binary) Root relaxation: objective 0.000000e+00, 444 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 (978 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 -- 43 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 21:37:28 2012 Optimize a model with 17287 rows, 4427 columns and 54957 nonzeros Presolve time: 0.07s Presolved: 17287 rows, 4427 columns, 54957 nonzeros Variable types: 0 continuous, 4427 integer (4427 binary) Root relaxation: objective 0.000000e+00, 349 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 (682 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 21:37:28 2012 Optimize a model with 8322 rows, 2535 columns and 26170 nonzeros Presolve time: 0.02s Presolved: 8322 rows, 2535 columns, 26170 nonzeros Variable types: 0 continuous, 2535 integer (2535 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 (723 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 -- 10 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 21:37:28 2012 Optimize a model with 4247 rows, 1675 columns and 13085 nonzeros Presolve time: 0.01s Presolved: 4247 rows, 1675 columns, 13085 nonzeros Variable types: 0 continuous, 1675 integer (1675 binary) Root relaxation: objective 0.000000e+00, 359 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 0 149 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (3774 simplex iterations) in 0.26 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 21:37:28 2012 Optimize a model with 1802 rows, 1159 columns and 5234 nonzeros Presolve removed 172 rows and 172 columns Presolve time: 0.00s Presolved: 1630 rows, 987 columns, 4890 nonzeros Variable types: 0 continuous, 987 integer (987 binary) Root relaxation: objective 0.000000e+00, 177 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 0 172 - 0.00000 - - 0s Explored 0 nodes (738 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 21:37:28 2012 Optimize a model with 2617 rows, 1331 columns and 7851 nonzeros Presolve time: 0.01s Presolved: 2617 rows, 1331 columns, 7851 nonzeros Variable types: 0 continuous, 1331 integer (1331 binary) Root relaxation: objective 0.000000e+00, 396 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 0 0 0.00000 0 340 - 0.00000 - - 0s 0 0 0.00000 0 466 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 1s Cutting planes: Gomory: 18 Zero half: 1007 Explored 0 nodes (8098 simplex iterations) in 1.05 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 21:37:30 2012 Optimize a model with 3432 rows, 1503 columns and 10468 nonzeros Presolve time: 0.01s Presolved: 3432 rows, 1503 columns, 10468 nonzeros Variable types: 0 continuous, 1503 integer (1503 binary) Root relaxation: objective 0.000000e+00, 381 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 0 336 - 0.00000 - - 0s 0 0 0.00000 0 326 - 0.00000 - - 0s 0 0 0.00000 0 326 - 0.00000 - - 0s 0 0 0.00000 0 458 - 0.00000 - - 0s 0 0 0.00000 0 284 - 0.00000 - - 1s 0 0 0.00000 0 284 - 0.00000 - - 1s 0 0 0.00000 0 278 - 0.00000 - - 2s 0 0 0.00000 0 270 - 0.00000 - - 2s 0 0 0.00000 0 270 - 0.00000 - - 3s 0 0 0.00000 0 258 - 0.00000 - - 3s 0 0 0.00000 0 254 - 0.00000 - - 3s 0 0 0.00000 0 254 - 0.00000 - - 4s 0 0 0.00000 0 291 - 0.00000 - - 4s 0 0 0.00000 0 291 - 0.00000 - - 5s 0 2 0.00000 0 291 - 0.00000 - - 5s 656 61 infeasible 15 - 0.00000 - 112 10s 906 61 0.00000 16 324 - 0.00000 - 110 15s 910 64 0.00000 19 291 - 0.00000 - 110 20s 913 66 0.00000 17 256 - 0.00000 - 109 25s 917 69 0.00000 16 236 - 0.00000 - 109 30s 1013 55 0.00000 23 352 - 0.00000 - 188 35s 1264 1 infeasible 19 - 0.00000 - 202 40s Cutting planes: Clique: 1 Zero half: 18 Explored 1266 nodes (299502 simplex iterations) in 40.04 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