current bounds on the number of colors: 0 -- 177 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 23:49:31 2012 Optimize a model with 71985 rows, 16392 columns and 231000 nonzeros Presolve time: 0.22s Presolved: 71985 rows, 16392 columns, 231000 nonzeros Variable types: 0 continuous, 16392 integer (16392 binary) Root relaxation: objective 0.000000e+00, 676 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 (1078 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 -- 88 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 23:49:33 2012 Optimize a model with 36081 rows, 8604 columns and 115500 nonzeros Presolve time: 0.15s Presolved: 36081 rows, 8604 columns, 115500 nonzeros Variable types: 0 continuous, 8604 integer (8604 binary) Root relaxation: objective 0.000000e+00, 558 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 (940 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 -- 44 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 23:49:33 2012 Optimize a model with 18129 rows, 4710 columns and 57750 nonzeros Presolve time: 0.07s Presolved: 18129 rows, 4710 columns, 57750 nonzeros Variable types: 0 continuous, 4710 integer (4710 binary) Root relaxation: objective 0.000000e+00, 364 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 (694 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 Fri Dec 14 23:49:34 2012 Optimize a model with 9153 rows, 2763 columns and 28875 nonzeros Presolve time: 0.03s Presolved: 9153 rows, 2763 columns, 28875 nonzeros Variable types: 0 continuous, 2763 integer (2763 binary) Root relaxation: objective 0.000000e+00, 385 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 (726 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 Fri Dec 14 23:49:34 2012 Optimize a model with 4257 rows, 1701 columns and 13125 nonzeros Presolve time: 0.01s Presolved: 4257 rows, 1701 columns, 13125 nonzeros Variable types: 0 continuous, 1701 integer (1701 binary) Root relaxation: objective 0.000000e+00, 386 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 0 224 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (3682 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 Fri Dec 14 23:49:34 2012 Optimize a model with 1809 rows, 1170 columns and 5250 nonzeros Presolve removed 177 rows and 177 columns Presolve time: 0.00s Presolved: 1632 rows, 993 columns, 4896 nonzeros Variable types: 0 continuous, 993 integer (993 binary) Root relaxation: objective 0.000000e+00, 188 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 0 177 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (777 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 Fri Dec 14 23:49:34 2012 Optimize a model with 2625 rows, 1347 columns and 7875 nonzeros Presolve time: 0.01s Presolved: 2625 rows, 1347 columns, 7875 nonzeros Variable types: 0 continuous, 1347 integer (1347 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 0 352 - 0.00000 - - 0s 0 0 0.00000 0 344 - 0.00000 - - 0s 0 0 0.00000 0 475 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Cutting planes: Gomory: 50 Zero half: 448 Explored 0 nodes (7621 simplex iterations) in 0.98 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 Fri Dec 14 23:49:35 2012 Optimize a model with 3441 rows, 1524 columns and 10500 nonzeros Presolve time: 0.01s Presolved: 3441 rows, 1524 columns, 10500 nonzeros Variable types: 0 continuous, 1524 integer (1524 binary) Root relaxation: objective 0.000000e+00, 387 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 0 332 - 0.00000 - - 0s 0 0 0.00000 0 326 - 0.00000 - - 0s 0 0 0.00000 0 316 - 0.00000 - - 0s 0 0 0.00000 0 449 - 0.00000 - - 0s 0 0 0.00000 0 306 - 0.00000 - - 1s 0 0 0.00000 0 288 - 0.00000 - - 1s 0 0 0.00000 0 286 - 0.00000 - - 1s 0 0 0.00000 0 288 - 0.00000 - - 2s 0 0 0.00000 0 274 - 0.00000 - - 2s 0 0 0.00000 0 274 - 0.00000 - - 2s 0 0 0.00000 0 281 - 0.00000 - - 3s 0 0 0.00000 0 276 - 0.00000 - - 3s 0 0 0.00000 0 272 - 0.00000 - - 3s 0 0 0.00000 0 283 - 0.00000 - - 4s 0 0 0.00000 0 283 - 0.00000 - - 4s 0 2 0.00000 0 283 - 0.00000 - - 4s 17 15 0.00000 10 298 - 0.00000 - 202 5s 711 123 0.00000 6 288 - 0.00000 - 95.3 10s 717 127 0.00000 6 315 - 0.00000 - 94.5 16s 871 109 0.00000 28 302 - 0.00000 - 157 20s 1284 36 0.00000 27 350 - 0.00000 - 170 25s 1748 60 infeasible 32 - 0.00000 - 172 30s 2205 83 0.00000 28 312 - 0.00000 - 176 35s 2597 85 0.00000 30 314 - 0.00000 - 181 40s 3006 70 infeasible 32 - 0.00000 - 184 45s 3431 109 infeasible 25 - 0.00000 - 185 50s 3856 114 infeasible 30 - 0.00000 - 187 55s 4246 116 infeasible 26 - 0.00000 - 189 60s 4667 109 0.00000 27 318 - 0.00000 - 190 65s 5111 117 infeasible 36 - 0.00000 - 190 70s 5474 92 infeasible 31 - 0.00000 - 193 75s 5848 90 infeasible 26 - 0.00000 - 194 80s 6196 92 0.00000 29 306 - 0.00000 - 196 85s 6559 89 infeasible 24 - 0.00000 - 197 90s 6950 94 infeasible 31 - 0.00000 - 198 95s 7298 104 infeasible 31 - 0.00000 - 199 100s 7656 106 infeasible 31 - 0.00000 - 200 105s 8032 106 0.00000 30 310 - 0.00000 - 201 110s 8427 97 0.00000 28 333 - 0.00000 - 202 115s 8751 93 infeasible 29 - 0.00000 - 203 120s 9124 76 0.00000 27 286 - 0.00000 - 204 125s 9548 76 0.00000 26 318 - 0.00000 - 203 130s 9889 59 infeasible 28 - 0.00000 - 204 135s 10273 51 infeasible 33 - 0.00000 - 204 140s 10615 23 infeasible 32 - 0.00000 - 205 145s 10986 14 infeasible 30 - 0.00000 - 205 150s 11371 15 infeasible 30 - 0.00000 - 205 155s Cutting planes: Gomory: 2 Zero half: 15 Explored 11537 nodes (2407008 simplex iterations) in 157.40 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