current bounds on the number of colors: 0 -- 179 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 00:22:10 2012 Optimize a model with 71468 rows, 16732 columns and 229798 nonzeros Presolve time: 0.22s Presolved: 71468 rows, 16732 columns, 229798 nonzeros Variable types: 0 continuous, 16732 integer (16732 binary) Root relaxation: objective 0.000000e+00, 682 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 (1082 simplex iterations) in 0.39 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 -- 89 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 00:22:11 2012 Optimize a model with 35423 rows, 8677 columns and 113608 nonzeros Presolve time: 0.15s Presolved: 35423 rows, 8677 columns, 113608 nonzeros Variable types: 0 continuous, 8677 integer (8677 binary) Root relaxation: objective 0.000000e+00, 478 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 (964 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 -- 44 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 00:22:12 2012 Optimize a model with 17801 rows, 4739 columns and 56804 nonzeros Presolve time: 0.07s Presolved: 17801 rows, 4739 columns, 56804 nonzeros Variable types: 0 continuous, 4739 integer (4739 binary) Root relaxation: objective 0.000000e+00, 396 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 (736 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 00:22:12 2012 Optimize a model with 8990 rows, 2770 columns and 28402 nonzeros Presolve time: 0.03s Presolved: 8990 rows, 2770 columns, 28402 nonzeros Variable types: 0 continuous, 2770 integer (2770 binary) Root relaxation: objective 0.000000e+00, 384 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 (941 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 00:22:12 2012 Optimize a model with 4184 rows, 1696 columns and 12910 nonzeros Presolve time: 0.01s Presolved: 4184 rows, 1696 columns, 12910 nonzeros Variable types: 0 continuous, 1696 integer (1696 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 0 163 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (4258 simplex iterations) in 0.30 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 00:22:13 2012 Optimize a model with 1781 rows, 1159 columns and 5164 nonzeros Presolve removed 179 rows and 179 columns Presolve time: 0.00s Presolved: 1602 rows, 980 columns, 4806 nonzeros Variable types: 0 continuous, 980 integer (980 binary) Root relaxation: objective 0.000000e+00, 187 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 0 179 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (771 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 00:22:13 2012 Optimize a model with 2582 rows, 1338 columns and 7746 nonzeros Presolve time: 0.01s Presolved: 2582 rows, 1338 columns, 7746 nonzeros Variable types: 0 continuous, 1338 integer (1338 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 0 354 - 0.00000 - - 0s 0 0 0.00000 0 358 - 0.00000 - - 0s 0 0 0.00000 0 499 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Cutting planes: Gomory: 36 Zero half: 449 Explored 0 nodes (6684 simplex iterations) in 0.94 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 00:22:14 2012 Optimize a model with 3383 rows, 1517 columns and 10328 nonzeros Presolve time: 0.01s Presolved: 3383 rows, 1517 columns, 10328 nonzeros Variable types: 0 continuous, 1517 integer (1517 binary) Root relaxation: objective 0.000000e+00, 400 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 0 340 - 0.00000 - - 0s 0 0 0.00000 0 320 - 0.00000 - - 0s 0 0 0.00000 0 320 - 0.00000 - - 0s 0 0 0.00000 0 308 - 0.00000 - - 1s 0 0 0.00000 0 298 - 0.00000 - - 1s 0 0 0.00000 0 298 - 0.00000 - - 1s 0 0 0.00000 0 288 - 0.00000 - - 1s 0 0 0.00000 0 288 - 0.00000 - - 2s 0 0 0.00000 0 292 - 0.00000 - - 2s 0 0 0.00000 0 292 - 0.00000 - - 2s 0 2 0.00000 0 292 - 0.00000 - - 3s 442 71 0.00000 25 280 - 0.00000 - 93.8 5s 712 75 0.00000 6 246 - 0.00000 - 78.2 10s 718 79 0.00000 8 232 - 0.00000 - 77.6 15s 803 93 infeasible 27 - 0.00000 - 146 20s 1151 72 infeasible 27 - 0.00000 - 164 25s 1535 78 infeasible 30 - 0.00000 - 176 30s 1935 60 infeasible 28 - 0.00000 - 182 35s 2373 148 0.00000 29 320 - 0.00000 - 182 40s 2804 187 infeasible 31 - 0.00000 - 183 45s 3156 169 0.00000 27 308 - 0.00000 - 188 50s 3531 130 0.00000 22 326 - 0.00000 - 193 55s 3907 102 infeasible 25 - 0.00000 - 195 60s 4260 105 infeasible 22 - 0.00000 - 198 65s 4653 112 infeasible 26 - 0.00000 - 199 70s 5003 106 0.00000 25 306 - 0.00000 - 201 75s 5399 106 0.00000 27 362 - 0.00000 - 201 80s 5801 106 0.00000 28 312 - 0.00000 - 203 85s 6204 95 0.00000 25 290 - 0.00000 - 204 90s 6560 97 0.00000 25 391 - 0.00000 - 204 95s 6907 98 0.00000 24 339 - 0.00000 - 206 100s 7266 99 infeasible 28 - 0.00000 - 207 105s 7627 86 infeasible 33 - 0.00000 - 208 110s 7973 64 infeasible 20 - 0.00000 - 209 115s 8324 63 0.00000 20 362 - 0.00000 - 209 120s 8671 44 0.00000 27 335 - 0.00000 - 210 125s 9021 40 infeasible 26 - 0.00000 - 210 130s 9384 33 infeasible 26 - 0.00000 - 211 135s 9815 32 0.00000 27 294 - 0.00000 - 210 140s 10160 13 0.00000 23 310 - 0.00000 - 211 145s 10524 25 0.00000 35 288 - 0.00000 - 211 150s 10922 5 infeasible 24 - 0.00000 - 211 155s Cutting planes: Gomory: 1 Zero half: 7 Explored 11256 nodes (2403957 simplex iterations) in 159.92 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