current bounds on the number of colors: 0 -- 180 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 00:47:53 2012 Optimize a model with 75960 rows, 17042 columns and 243540 nonzeros Presolve time: 0.24s Presolved: 75960 rows, 17042 columns, 243540 nonzeros Variable types: 0 continuous, 17042 integer (17042 binary) Root relaxation: objective 0.000000e+00, 727 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 (1167 simplex iterations) in 0.44 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 -- 90 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 00:47:55 2012 Optimize a model with 38070 rows, 8942 columns and 121770 nonzeros Presolve time: 0.15s Presolved: 38070 rows, 8942 columns, 121770 nonzeros Variable types: 0 continuous, 8942 integer (8942 binary) Root relaxation: objective 0.000000e+00, 573 iterations, 0.04 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 (1001 simplex iterations) in 0.25 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 -- 45 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 00:47:55 2012 Optimize a model with 18704 rows, 4802 columns and 59532 nonzeros Presolve time: 0.07s Presolved: 18704 rows, 4802 columns, 59532 nonzeros Variable types: 0 continuous, 4802 integer (4802 binary) Root relaxation: objective 0.000000e+00, 401 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 (744 simplex iterations) in 0.11 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 -- 22 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 00:47:56 2012 Optimize a model with 9442 rows, 2822 columns and 29766 nonzeros Presolve time: 0.03s Presolved: 9442 rows, 2822 columns, 29766 nonzeros Variable types: 0 continuous, 2822 integer (2822 binary) Root relaxation: objective 0.000000e+00, 372 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 (700 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 00:47:56 2012 Optimize a model with 4390 rows, 1742 columns and 13530 nonzeros Presolve time: 0.01s Presolved: 4390 rows, 1742 columns, 13530 nonzeros Variable types: 0 continuous, 1742 integer (1742 binary) Root relaxation: objective 0.000000e+00, 388 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 0 126 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (3486 simplex iterations) in 0.25 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 00:47:56 2012 Optimize a model with 1864 rows, 1202 columns and 5412 nonzeros Presolve removed 180 rows and 180 columns Presolve time: 0.00s Presolved: 1684 rows, 1022 columns, 5052 nonzeros Variable types: 0 continuous, 1022 integer (1022 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 0 180 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (801 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 00:47:56 2012 Optimize a model with 2706 rows, 1382 columns and 8118 nonzeros Presolve time: 0.01s Presolved: 2706 rows, 1382 columns, 8118 nonzeros Variable types: 0 continuous, 1382 integer (1382 binary) Root relaxation: objective 0.000000e+00, 429 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 0 274 - 0.00000 - - 0s 0 0 0.00000 0 346 - 0.00000 - - 0s 0 0 0.00000 0 482 - 0.00000 - - 0s 0 0 0.00000 0 499 - 0.00000 - - 1s 0 0 0.00000 0 485 - 0.00000 - - 1s 0 0 infeasible 0 - 0.10000 - - 1s Cutting planes: Gomory: 1 Zero half: 965 Explored 0 nodes (12060 simplex iterations) in 2.00 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 00:47:58 2012 Optimize a model with 3548 rows, 1562 columns and 10824 nonzeros Presolve time: 0.01s Presolved: 3548 rows, 1562 columns, 10824 nonzeros Variable types: 0 continuous, 1562 integer (1562 binary) Root relaxation: objective 0.000000e+00, 401 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 0 350 - 0.00000 - - 0s 0 0 0.00000 0 340 - 0.00000 - - 0s 0 0 0.00000 0 338 - 0.00000 - - 0s 0 0 0.00000 0 466 - 0.00000 - - 0s 0 0 0.00000 0 320 - 0.00000 - - 1s 0 0 0.00000 0 331 - 0.00000 - - 1s 0 0 0.00000 0 322 - 0.00000 - - 2s 0 0 0.00000 0 316 - 0.00000 - - 2s 0 0 0.00000 0 316 - 0.00000 - - 3s 0 0 0.00000 0 321 - 0.00000 - - 3s 0 0 0.00000 0 321 - 0.00000 - - 3s 0 2 0.00000 0 321 - 0.00000 - - 4s 84 30 infeasible 18 - 0.00000 - 163 5s 605 102 0.00000 3 306 - 0.00000 - 126 11s 609 104 0.00000 18 268 - 0.00000 - 125 16s 613 107 0.00000 13 276 - 0.00000 - 124 21s 708 92 0.00000 25 311 - 0.00000 - 203 25s 1050 28 infeasible 24 - 0.00000 - 206 30s 1370 36 0.00000 20 300 - 0.00000 - 211 35s 1674 16 infeasible 23 - 0.00000 - 217 40s 2013 13 0.00000 22 318 - 0.00000 - 218 45s Cutting planes: Gomory: 1 Zero half: 27 Explored 2115 nodes (497040 simplex iterations) in 46.91 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