current bounds on the number of colors: 0 -- 201 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 09:24:48 2012 Optimize a model with 103501 rows, 21133 columns and 330000 nonzeros Presolve time: 0.34s Presolved: 103501 rows, 21133 columns, 330000 nonzeros Variable types: 0 continuous, 21133 integer (21133 binary) Root relaxation: objective 0.000000e+00, 735 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 (1167 simplex iterations) in 0.57 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 -- 100 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 09:24:50 2012 Optimize a model with 51851 rows, 11083 columns and 165000 nonzeros Presolve time: 0.17s Presolved: 51851 rows, 11083 columns, 165000 nonzeros Variable types: 0 continuous, 11083 integer (11083 binary) Root relaxation: objective 0.000000e+00, 749 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 (1225 simplex iterations) in 0.31 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 -- 50 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 09:24:51 2012 Optimize a model with 26026 rows, 6058 columns and 82500 nonzeros Presolve time: 0.11s Presolved: 26026 rows, 6058 columns, 82500 nonzeros Variable types: 0 continuous, 6058 integer (6058 binary) Root relaxation: objective 0.000000e+00, 460 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 (870 simplex iterations) in 0.16 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 -- 25 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 09:24:51 2012 Optimize a model with 12597 rows, 3445 columns and 39600 nonzeros Presolve time: 0.04s Presolved: 12597 rows, 3445 columns, 39600 nonzeros Variable types: 0 continuous, 3445 integer (3445 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1055 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 09:24:51 2012 Optimize a model with 6399 rows, 2239 columns and 19800 nonzeros Presolve time: 0.02s Presolved: 6399 rows, 2239 columns, 19800 nonzeros Variable types: 0 continuous, 2239 integer (2239 binary) Root relaxation: objective 0.000000e+00, 435 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 (1801 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 09:24:52 2012 Optimize a model with 3300 rows, 1636 columns and 9900 nonzeros Presolve time: 0.01s Presolved: 3300 rows, 1636 columns, 9900 nonzeros Variable types: 0 continuous, 1636 integer (1636 binary) Root relaxation: objective 0.000000e+00, 452 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 0 326 - 0.00000 - - 0s 0 0 0.00000 0 383 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 1s Explored 0 nodes (7911 simplex iterations) in 1.01 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 09:24:53 2012 Optimize a model with 4333 rows, 1837 columns and 13200 nonzeros Presolve time: 0.01s Presolved: 4333 rows, 1837 columns, 13200 nonzeros Variable types: 0 continuous, 1837 integer (1837 binary) Root relaxation: objective 0.000000e+00, 444 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 0 386 - 0.00000 - - 0s 0 0 0.00000 0 390 - 0.00000 - - 1s 0 0 0.00000 0 518 - 0.00000 - - 1s 0 0 0.00000 0 380 - 0.00000 - - 2s 0 0 0.00000 0 376 - 0.00000 - - 3s 0 0 0.00000 0 378 - 0.00000 - - 3s 0 0 0.00000 0 368 - 0.00000 - - 4s 0 0 0.00000 0 364 - 0.00000 - - 5s 0 0 0.00000 0 364 - 0.00000 - - 6s 0 0 0.00000 0 382 - 0.00000 - - 6s 0 0 0.00000 0 358 - 0.00000 - - 7s 0 0 0.00000 0 358 - 0.00000 - - 8s 0 0 0.00000 0 358 - 0.00000 - - 8s 0 2 0.00000 0 358 - 0.00000 - - 9s 44 20 0.00000 17 360 - 0.00000 - 252 10s 347 56 0.00000 15 391 - 0.00000 - 192 15s 604 93 0.00000 15 573 - 0.00000 - 174 21s 605 94 0.00000 15 380 - 0.00000 - 174 25s 608 96 0.00000 15 368 - 0.00000 - 173 31s 610 97 0.00000 12 366 - 0.00000 - 172 36s 612 98 0.00000 15 354 - 0.00000 - 172 41s 615 100 0.00000 14 378 - 0.00000 - 171 45s 747 88 infeasible 25 - 0.00000 - 278 50s 883 45 0.00000 21 372 - 0.00000 - 289 55s 1017 24 infeasible 26 - 0.00000 - 297 60s 1156 13 0.00000 24 362 - 0.00000 - 303 65s Cutting planes: Clique: 1 Zero half: 16 Explored 1220 nodes (429040 simplex iterations) in 67.31 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 09:26:00 2012 Optimize a model with 5366 rows, 2038 columns and 16500 nonzeros Presolve time: 0.01s Presolved: 5366 rows, 2038 columns, 16500 nonzeros Variable types: 0 continuous, 2038 integer (2038 binary) Root relaxation: objective 0.000000e+00, 459 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 0 378 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (2374 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% optimal solution found: number of colors: 5