current bounds on the number of colors: 0 -- 187 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 03:41:32 2012 Optimize a model with 88072 rows, 18336 columns and 281046 nonzeros Presolve time: 0.28s Presolved: 88072 rows, 18336 columns, 281046 nonzeros Variable types: 0 continuous, 18336 integer (18336 binary) Root relaxation: objective 0.000000e+00, 726 iterations, 0.08 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 (1146 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 -- 93 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 03:41:34 2012 Optimize a model with 43657 rows, 9547 columns and 139012 nonzeros Presolve time: 0.15s Presolved: 43657 rows, 9547 columns, 139012 nonzeros Variable types: 0 continuous, 9547 integer (9547 binary) Root relaxation: objective 0.000000e+00, 482 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 (887 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 -- 46 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 03:41:35 2012 Optimize a model with 21922 rows, 5246 columns and 69506 nonzeros Presolve time: 0.09s Presolved: 21922 rows, 5246 columns, 69506 nonzeros Variable types: 0 continuous, 5246 integer (5246 binary) Root relaxation: objective 0.000000e+00, 409 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 (748 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 03:41:35 2012 Optimize a model with 10582 rows, 3002 columns and 33242 nonzeros Presolve time: 0.03s Presolved: 10582 rows, 3002 columns, 33242 nonzeros Variable types: 0 continuous, 3002 integer (3002 binary) Root relaxation: objective 0.000000e+00, 390 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 (737 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 03:41:35 2012 Optimize a model with 4912 rows, 1880 columns and 15110 nonzeros Presolve time: 0.01s Presolved: 4912 rows, 1880 columns, 15110 nonzeros Variable types: 0 continuous, 1880 integer (1880 binary) Root relaxation: objective 0.000000e+00, 394 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 H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (5105 simplex iterations) in 0.48 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 03:41:36 2012 Optimize a model with 2077 rows, 1319 columns and 6044 nonzeros Presolve removed 187 rows and 187 columns Presolve time: 0.01s Presolved: 1890 rows, 1132 columns, 5670 nonzeros Variable types: 0 continuous, 1132 integer (1132 binary) Root relaxation: objective 0.000000e+00, 192 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 0 187 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (803 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 03:41:36 2012 Optimize a model with 3022 rows, 1506 columns and 9066 nonzeros Presolve time: 0.01s Presolved: 3022 rows, 1506 columns, 9066 nonzeros Variable types: 0 continuous, 1506 integer (1506 binary) Root relaxation: objective 0.000000e+00, 422 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 0 370 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4593 simplex iterations) in 0.58 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 03:41:37 2012 Optimize a model with 3967 rows, 1693 columns and 12088 nonzeros Presolve time: 0.01s Presolved: 3967 rows, 1693 columns, 12088 nonzeros Variable types: 0 continuous, 1693 integer (1693 binary) Root relaxation: objective 0.000000e+00, 426 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 0 358 - 0.00000 - - 0s 0 0 0.00000 0 362 - 0.00000 - - 0s 0 0 0.00000 0 346 - 0.00000 - - 0s 0 0 0.00000 0 447 - 0.00000 - - 1s 0 0 0.00000 0 363 - 0.00000 - - 2s 0 0 0.00000 0 300 - 0.00000 - - 2s 0 0 0.00000 0 292 - 0.00000 - - 3s 0 0 0.00000 0 472 - 0.00000 - - 4s 0 0 0.00000 0 463 - 0.00000 - - 5s 0 0 0.00000 0 455 - 0.00000 - - 6s 0 0 0.00000 0 445 - 0.00000 - - 7s 0 0 0.00000 0 444 - 0.00000 - - 8s 0 0 0.00000 0 435 - 0.00000 - - 8s 0 0 0.00000 0 445 - 0.00000 - - 9s 0 0 0.00000 0 416 - 0.00000 - - 10s 0 2 0.00000 0 416 - 0.00000 - - 10s 257 18 0.00000 14 459 - 0.00000 - 186 15s 616 19 0.00000 12 428 - 0.00000 - 178 20s 909 24 0.00000 6 346 - 0.00000 - 180 25s 913 27 0.00000 14 324 - 0.00000 - 179 32s 915 28 0.00000 15 320 - 0.00000 - 179 35s 918 30 0.00000 11 333 - 0.00000 - 178 41s 1024 8 infeasible 21 - 0.00000 - 239 45s Cutting planes: Clique: 1 Zero half: 5 Explored 1123 nodes (336686 simplex iterations) in 48.15 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