current bounds on the number of colors: 0 -- 198 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 08:17:56 2012 Optimize a model with 97218 rows, 20582 columns and 310662 nonzeros Presolve time: 0.32s Presolved: 97218 rows, 20582 columns, 310662 nonzeros Variable types: 0 continuous, 20582 integer (20582 binary) Root relaxation: objective 0.000000e+00, 679 iterations, 0.07 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 (1122 simplex iterations) in 0.53 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 -- 99 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 08:17:58 2012 Optimize a model with 48218 rows, 10682 columns and 153762 nonzeros Presolve time: 0.16s Presolved: 48218 rows, 10682 columns, 153762 nonzeros Variable types: 0 continuous, 10682 integer (10682 binary) Root relaxation: objective 0.000000e+00, 706 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 (1183 simplex iterations) in 0.29 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 -- 49 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 08:17:59 2012 Optimize a model with 23718 rows, 5732 columns and 75312 nonzeros Presolve time: 0.09s Presolved: 23718 rows, 5732 columns, 75312 nonzeros Variable types: 0 continuous, 5732 integer (5732 binary) Root relaxation: objective 0.000000e+00, 431 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 (825 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 -- 24 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 08:17:59 2012 Optimize a model with 11958 rows, 3356 columns and 37656 nonzeros Presolve time: 0.04s Presolved: 11958 rows, 3356 columns, 37656 nonzeros Variable types: 0 continuous, 3356 integer (3356 binary) Root relaxation: objective 0.000000e+00, 404 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 (990 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 -- 12 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 08:18:00 2012 Optimize a model with 6078 rows, 2168 columns and 18828 nonzeros Presolve time: 0.02s Presolved: 6078 rows, 2168 columns, 18828 nonzeros Variable types: 0 continuous, 2168 integer (2168 binary) Root relaxation: objective 0.000000e+00, 440 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 10 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (2406 simplex iterations) in 0.12 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 08:18:00 2012 Optimize a model with 3138 rows, 1574 columns and 9414 nonzeros Presolve time: 0.01s Presolved: 3138 rows, 1574 columns, 9414 nonzeros Variable types: 0 continuous, 1574 integer (1574 binary) Root relaxation: objective 0.000000e+00, 443 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 0 392 - 0.00000 - - 0s 0 0 0.00000 0 396 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4805 simplex iterations) in 0.66 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 08:18:00 2012 Optimize a model with 4118 rows, 1772 columns and 12552 nonzeros Presolve time: 0.01s Presolved: 4118 rows, 1772 columns, 12552 nonzeros Variable types: 0 continuous, 1772 integer (1772 binary) Root relaxation: objective 0.000000e+00, 447 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 0 384 - 0.00000 - - 0s 0 0 0.00000 0 364 - 0.00000 - - 0s 0 0 0.00000 0 397 - 0.00000 - - 1s 0 0 0.00000 0 360 - 0.00000 - - 1s 0 0 0.00000 0 358 - 0.00000 - - 2s 0 0 0.00000 0 360 - 0.00000 - - 2s 0 0 0.00000 0 354 - 0.00000 - - 3s 0 0 0.00000 0 354 - 0.00000 - - 3s 0 0 0.00000 0 352 - 0.00000 - - 4s 0 0 0.00000 0 348 - 0.00000 - - 5s 0 0 0.00000 0 348 - 0.00000 - - 5s 0 0 0.00000 0 334 - 0.00000 - - 6s 0 0 0.00000 0 334 - 0.00000 - - 6s 0 0 0.00000 0 334 - 0.00000 - - 7s 0 2 0.00000 0 334 - 0.00000 - - 7s 164 32 infeasible 18 - 0.00000 - 173 10s 591 82 0.00000 11 356 - 0.00000 - 162 15s 606 90 0.00000 10 359 - 0.00000 - 160 20s 609 92 0.00000 17 350 - 0.00000 - 159 25s 612 94 0.00000 13 324 - 0.00000 - 158 31s 616 97 0.00000 20 316 - 0.00000 - 157 35s 773 70 infeasible 21 - 0.00000 - 261 40s 946 20 0.00000 25 393 - 0.00000 - 271 45s 1104 6 0.00000 20 356 - 0.00000 - 280 50s Cutting planes: Clique: 1 Zero half: 17 Explored 1119 nodes (367875 simplex iterations) in 50.39 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 08:18:51 2012 Optimize a model with 5098 rows, 1970 columns and 15690 nonzeros Presolve time: 0.01s Presolved: 5098 rows, 1970 columns, 15690 nonzeros Variable types: 0 continuous, 1970 integer (1970 binary) Root relaxation: objective 0.000000e+00, 440 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 0 354 - 0.00000 - - 0s Cutting planes: Clique: 11 Zero half: 3 Explored 0 nodes (4842 simplex iterations) in 0.46 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