current bounds on the number of colors: 0 -- 181 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 01:42:23 2012 Optimize a model with 72991 rows, 17099 columns and 234720 nonzeros Presolve time: 0.23s Presolved: 72991 rows, 17099 columns, 234720 nonzeros Variable types: 0 continuous, 17099 integer (17099 binary) Root relaxation: objective 0.000000e+00, 742 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 (1206 simplex iterations) in 0.42 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 01:42:24 2012 Optimize a model with 36586 rows, 8954 columns and 117360 nonzeros Presolve time: 0.15s Presolved: 36586 rows, 8954 columns, 117360 nonzeros Variable types: 0 continuous, 8954 integer (8954 binary) Root relaxation: objective 0.000000e+00, 575 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 (1007 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 -- 45 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 01:42:25 2012 Optimize a model with 17979 rows, 4791 columns and 57376 nonzeros Presolve time: 0.07s Presolved: 17979 rows, 4791 columns, 57376 nonzeros Variable types: 0 continuous, 4791 integer (4791 binary) Root relaxation: objective 0.000000e+00, 389 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 (725 simplex iterations) in 0.10 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 01:42:25 2012 Optimize a model with 9080 rows, 2800 columns and 28688 nonzeros Presolve time: 0.03s Presolved: 9080 rows, 2800 columns, 28688 nonzeros Variable types: 0 continuous, 2800 integer (2800 binary) Root relaxation: objective 0.000000e+00, 382 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 (703 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 01:42:25 2012 Optimize a model with 4226 rows, 1714 columns and 13040 nonzeros Presolve time: 0.01s Presolved: 4226 rows, 1714 columns, 13040 nonzeros Variable types: 0 continuous, 1714 integer (1714 binary) Root relaxation: objective 0.000000e+00, 393 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 30 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (3786 simplex iterations) in 0.26 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 01:42:25 2012 Optimize a model with 1799 rows, 1171 columns and 5216 nonzeros Presolve removed 181 rows and 181 columns Presolve time: 0.00s Presolved: 1618 rows, 990 columns, 4854 nonzeros Variable types: 0 continuous, 990 integer (990 binary) Root relaxation: objective 0.000000e+00, 191 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 0 181 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (797 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 01:42:26 2012 Optimize a model with 2608 rows, 1352 columns and 7824 nonzeros Presolve time: 0.01s Presolved: 2608 rows, 1352 columns, 7824 nonzeros Variable types: 0 continuous, 1352 integer (1352 binary) Root relaxation: objective 0.000000e+00, 405 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 0 362 - 0.00000 - - 0s 0 0 0.00000 0 360 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4335 simplex iterations) in 0.51 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 01:42:26 2012 Optimize a model with 3417 rows, 1533 columns and 10432 nonzeros Presolve time: 0.01s Presolved: 3417 rows, 1533 columns, 10432 nonzeros Variable types: 0 continuous, 1533 integer (1533 binary) Root relaxation: objective 0.000000e+00, 411 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 0 340 - 0.00000 - - 0s 0 0 0.00000 0 344 - 0.00000 - - 0s 0 0 0.00000 0 418 - 0.00000 - - 0s 0 0 0.00000 0 435 - 0.00000 - - 1s 0 0 0.00000 0 376 - 0.00000 - - 1s 0 0 0.00000 0 401 - 0.00000 - - 2s 0 0 0.00000 0 462 - 0.00000 - - 2s 0 0 0.00000 0 462 - 0.00000 - - 3s 0 2 0.00000 0 462 - 0.00000 - - 3s 186 34 infeasible 12 - 0.00000 - 113 5s 707 59 0.00000 25 434 - 0.00000 - 94.1 10s 918 22 infeasible 26 - 0.00000 - 145 15s 1323 69 0.00000 29 302 - 0.00000 - 160 20s 1711 59 0.00000 23 313 - 0.00000 - 171 25s 2095 85 infeasible 33 - 0.00000 - 176 30s 2497 97 infeasible 27 - 0.00000 - 178 35s 2888 92 0.00000 25 287 - 0.00000 - 181 40s 3289 147 infeasible 34 - 0.00000 - 183 45s 3693 139 0.00000 24 373 - 0.00000 - 184 50s 4118 150 infeasible 28 - 0.00000 - 185 55s 4494 142 0.00000 28 305 - 0.00000 - 187 60s 4868 132 0.00000 31 334 - 0.00000 - 189 65s 5190 128 infeasible 33 - 0.00000 - 192 70s 5632 152 0.00000 25 292 - 0.00000 - 191 75s 6070 182 infeasible 32 - 0.00000 - 191 80s 6503 171 infeasible 33 - 0.00000 - 191 85s 6919 203 infeasible 34 - 0.00000 - 191 90s 7361 197 0.00000 27 306 - 0.00000 - 190 95s 7796 180 0.00000 27 315 - 0.00000 - 190 100s 8274 174 infeasible 30 - 0.00000 - 189 105s 8682 134 0.00000 29 308 - 0.00000 - 189 110s 9056 114 infeasible 29 - 0.00000 - 189 115s 9441 117 infeasible 29 - 0.00000 - 190 120s 9817 97 0.00000 26 357 - 0.00000 - 190 125s 10204 82 0.00000 35 300 - 0.00000 - 191 130s 10635 73 infeasible 29 - 0.00000 - 190 135s 11019 73 infeasible 34 - 0.00000 - 191 140s 11393 77 infeasible 34 - 0.00000 - 191 145s 11755 61 0.00000 22 310 - 0.00000 - 191 150s 12087 45 0.00000 25 402 - 0.00000 - 192 155s 12453 29 infeasible 29 - 0.00000 - 192 160s 12797 9 0.00000 32 392 - 0.00000 - 193 165s Cutting planes: Gomory: 4 Clique: 2 Zero half: 14 Explored 12897 nodes (2510660 simplex iterations) in 166.46 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