current bounds on the number of colors: 0 -- 189 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:47:42 2012 Optimize a model with 86387 rows, 18683 columns and 276360 nonzeros Presolve time: 0.28s Presolved: 86387 rows, 18683 columns, 276360 nonzeros Variable types: 0 continuous, 18683 integer (18683 binary) Root relaxation: objective 0.000000e+00, 779 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 (1225 simplex iterations) in 0.50 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 04:47:44 2012 Optimize a model with 43288 rows, 9800 columns and 138180 nonzeros Presolve time: 0.15s Presolved: 43288 rows, 9800 columns, 138180 nonzeros Variable types: 0 continuous, 9800 integer (9800 binary) Root relaxation: objective 0.000000e+00, 547 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 (953 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 -- 47 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:47:44 2012 Optimize a model with 21280 rows, 5264 columns and 67620 nonzeros Presolve time: 0.08s Presolved: 21280 rows, 5264 columns, 67620 nonzeros Variable types: 0 continuous, 5264 integer (5264 binary) Root relaxation: objective 0.000000e+00, 395 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 (958 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 -- 23 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:47:45 2012 Optimize a model with 10276 rows, 2996 columns and 32340 nonzeros Presolve time: 0.03s Presolved: 10276 rows, 2996 columns, 32340 nonzeros Variable types: 0 continuous, 2996 integer (2996 binary) Root relaxation: objective 0.000000e+00, 407 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 (751 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 04:47:45 2012 Optimize a model with 4774 rows, 1862 columns and 14700 nonzeros Presolve time: 0.01s Presolved: 4774 rows, 1862 columns, 14700 nonzeros Variable types: 0 continuous, 1862 integer (1862 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 0 233 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (4590 simplex iterations) in 0.34 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 04:47:45 2012 Optimize a model with 2023 rows, 1295 columns and 5880 nonzeros Presolve removed 189 rows and 189 columns Presolve time: 0.01s Presolved: 1834 rows, 1106 columns, 5502 nonzeros Variable types: 0 continuous, 1106 integer (1106 binary) Root relaxation: objective 0.000000e+00, 195 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 0 189 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (821 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 04:47:45 2012 Optimize a model with 2940 rows, 1484 columns and 8820 nonzeros Presolve time: 0.01s Presolved: 2940 rows, 1484 columns, 8820 nonzeros Variable types: 0 continuous, 1484 integer (1484 binary) Root relaxation: objective 0.000000e+00, 420 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 0 292 - 0.00000 - - 0s 0 0 0.00000 0 374 - 0.00000 - - 0s 0 0 0.00000 0 521 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 1s Cutting planes: Gomory: 41 Zero half: 924 Explored 0 nodes (9253 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 Sat Dec 15 04:47:47 2012 Optimize a model with 3857 rows, 1673 columns and 11760 nonzeros Presolve time: 0.01s Presolved: 3857 rows, 1673 columns, 11760 nonzeros Variable types: 0 continuous, 1673 integer (1673 binary) Root relaxation: objective 0.000000e+00, 412 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 0 368 - 0.00000 - - 0s 0 0 0.00000 0 356 - 0.00000 - - 0s 0 0 0.00000 0 366 - 0.00000 - - 0s 0 0 0.00000 0 442 - 0.00000 - - 0s 0 0 0.00000 0 342 - 0.00000 - - 1s 0 0 0.00000 0 338 - 0.00000 - - 1s 0 0 0.00000 0 340 - 0.00000 - - 2s 0 0 0.00000 0 338 - 0.00000 - - 2s 0 0 0.00000 0 338 - 0.00000 - - 3s 0 0 0.00000 0 338 - 0.00000 - - 3s 0 0 0.00000 0 338 - 0.00000 - - 3s 0 2 0.00000 0 338 - 0.00000 - - 4s 82 12 0.00000 17 334 - 0.00000 - 142 5s 797 81 infeasible 19 - 0.00000 - 117 10s 907 98 0.00000 15 351 - 0.00000 - 114 15s 911 101 0.00000 20 333 - 0.00000 - 113 20s 914 103 0.00000 13 311 - 0.00000 - 113 25s 918 105 0.00000 4 297 - 0.00000 - 113 30s 940 120 0.00000 19 346 - 0.00000 - 203 35s 1235 47 infeasible 21 - 0.00000 - 211 40s 1501 32 infeasible 19 - 0.00000 - 221 45s 1731 6 0.00000 17 344 - 0.00000 - 229 50s Cutting planes: Zero half: 9 Explored 2010 nodes (492518 simplex iterations) in 54.82 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