current bounds on the number of colors: 0 -- 190 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:57:49 2012 Optimize a model with 89490 rows, 18990 columns and 285950 nonzeros Presolve time: 0.29s Presolved: 89490 rows, 18990 columns, 285950 nonzeros Variable types: 0 continuous, 18990 integer (18990 binary) Root relaxation: objective 0.000000e+00, 754 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 (1197 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 -- 95 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:57:51 2012 Optimize a model with 44370 rows, 9870 columns and 141470 nonzeros Presolve time: 0.15s Presolved: 44370 rows, 9870 columns, 141470 nonzeros Variable types: 0 continuous, 9870 integer (9870 binary) Root relaxation: objective 0.000000e+00, 523 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 (895 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 04:57:52 2012 Optimize a model with 21810 rows, 5310 columns and 69230 nonzeros Presolve time: 0.09s Presolved: 21810 rows, 5310 columns, 69230 nonzeros Variable types: 0 continuous, 5310 integer (5310 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 (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 04:57:52 2012 Optimize a model with 10530 rows, 3030 columns and 33110 nonzeros Presolve time: 0.03s Presolved: 10530 rows, 3030 columns, 33110 nonzeros Variable types: 0 continuous, 3030 integer (3030 binary) Root relaxation: objective 0.000000e+00, 416 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 (753 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 04:57:52 2012 Optimize a model with 4890 rows, 1890 columns and 15050 nonzeros Presolve time: 0.01s Presolved: 4890 rows, 1890 columns, 15050 nonzeros Variable types: 0 continuous, 1890 integer (1890 binary) Root relaxation: objective 0.000000e+00, 398 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 0 344 - 0.00000 - - 0s 0 0 0.00000 0 344 - 0.00000 - - 0s 0 0 0.00000 0 328 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (8275 simplex iterations) in 0.72 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 04:57:53 2012 Optimize a model with 2070 rows, 1320 columns and 6020 nonzeros Presolve removed 190 rows and 190 columns Presolve time: 0.01s Presolved: 1880 rows, 1130 columns, 5640 nonzeros Variable types: 0 continuous, 1130 integer (1130 binary) Root relaxation: objective 0.000000e+00, 202 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 0 190 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (816 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 04:57:53 2012 Optimize a model with 3010 rows, 1510 columns and 9030 nonzeros Presolve time: 0.01s Presolved: 3010 rows, 1510 columns, 9030 nonzeros Variable types: 0 continuous, 1510 integer (1510 binary) Root relaxation: objective 0.000000e+00, 413 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 0 0 0.00000 0 378 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4621 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 04:57:54 2012 Optimize a model with 3950 rows, 1700 columns and 12040 nonzeros Presolve time: 0.01s Presolved: 3950 rows, 1700 columns, 12040 nonzeros Variable types: 0 continuous, 1700 integer (1700 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 0 364 - 0.00000 - - 0s 0 0 0.00000 0 358 - 0.00000 - - 0s 0 0 0.00000 0 352 - 0.00000 - - 0s 0 0 0.00000 0 435 - 0.00000 - - 1s 0 0 0.00000 0 348 - 0.00000 - - 1s 0 0 0.00000 0 348 - 0.00000 - - 2s 0 0 0.00000 0 346 - 0.00000 - - 2s 0 0 0.00000 0 346 - 0.00000 - - 3s 0 0 0.00000 0 351 - 0.00000 - - 3s 0 0 0.00000 0 364 - 0.00000 - - 4s 0 0 0.00000 0 328 - 0.00000 - - 4s 0 2 0.00000 0 328 - 0.00000 - - 5s 410 12 0.00000 9 350 - 0.00000 - 149 10s 905 22 0.00000 0 352 - 0.00000 - 140 15s 908 24 0.00000 0 344 - 0.00000 - 140 20s 911 26 0.00000 0 424 - 0.00000 - 139 26s 932 34 0.00000 22 322 - 0.00000 - 188 30s 1118 10 0.00000 23 421 - 0.00000 - 204 35s 1320 22 infeasible 28 - 0.00000 - 218 40s 1518 6 0.00000 23 340 - 0.00000 - 229 45s 1756 10 infeasible 29 - 0.00000 - 232 50s 1967 3 infeasible 24 - 0.00000 - 238 55s Cutting planes: Gomory: 1 Clique: 1 Zero half: 21 Explored 2065 nodes (533553 simplex iterations) in 57.25 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