current bounds on the number of colors: 0 -- 182 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:06:23 2012 Optimize a model with 76804 rows, 17404 columns and 246428 nonzeros Presolve time: 0.24s Presolved: 76804 rows, 17404 columns, 246428 nonzeros Variable types: 0 continuous, 17404 integer (17404 binary) Root relaxation: objective 0.000000e+00, 675 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 (1108 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 -- 91 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 02:06:24 2012 Optimize a model with 38072 rows, 9032 columns and 121860 nonzeros Presolve time: 0.15s Presolved: 38072 rows, 9032 columns, 121860 nonzeros Variable types: 0 continuous, 9032 integer (9032 binary) Root relaxation: objective 0.000000e+00, 494 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 (1086 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 02:06:25 2012 Optimize a model with 18706 rows, 4846 columns and 59576 nonzeros Presolve time: 0.07s Presolved: 18706 rows, 4846 columns, 59576 nonzeros Variable types: 0 continuous, 4846 integer (4846 binary) Root relaxation: objective 0.000000e+00, 415 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 (762 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 02:06:25 2012 Optimize a model with 9444 rows, 2844 columns and 29788 nonzeros Presolve time: 0.03s Presolved: 9444 rows, 2844 columns, 29788 nonzeros Variable types: 0 continuous, 2844 integer (2844 binary) Root relaxation: objective 0.000000e+00, 377 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 (722 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 02:06:25 2012 Optimize a model with 4392 rows, 1752 columns and 13540 nonzeros Presolve time: 0.01s Presolved: 4392 rows, 1752 columns, 13540 nonzeros Variable types: 0 continuous, 1752 integer (1752 binary) Root relaxation: objective 0.000000e+00, 397 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 0 194 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (4096 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 02:06:25 2012 Optimize a model with 1866 rows, 1206 columns and 5416 nonzeros Presolve removed 182 rows and 182 columns Presolve time: 0.00s Presolved: 1684 rows, 1024 columns, 5052 nonzeros Variable types: 0 continuous, 1024 integer (1024 binary) Root relaxation: objective 0.000000e+00, 189 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 0 182 - 0.00000 - - 0s Explored 0 nodes (788 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 02:06:26 2012 Optimize a model with 2708 rows, 1388 columns and 8124 nonzeros Presolve time: 0.01s Presolved: 2708 rows, 1388 columns, 8124 nonzeros Variable types: 0 continuous, 1388 integer (1388 binary) Root relaxation: objective 0.000000e+00, 399 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 0 362 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4479 simplex iterations) in 0.53 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 02:06:26 2012 Optimize a model with 3550 rows, 1570 columns and 10832 nonzeros Presolve time: 0.01s Presolved: 3550 rows, 1570 columns, 10832 nonzeros Variable types: 0 continuous, 1570 integer (1570 binary) Root relaxation: objective 0.000000e+00, 402 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 0 352 - 0.00000 - - 0s 0 0 0.00000 0 348 - 0.00000 - - 0s 0 0 0.00000 0 362 - 0.00000 - - 0s 0 0 0.00000 0 340 - 0.00000 - - 1s 0 0 0.00000 0 340 - 0.00000 - - 1s 0 0 0.00000 0 318 - 0.00000 - - 1s 0 0 0.00000 0 314 - 0.00000 - - 2s 0 0 0.00000 0 306 - 0.00000 - - 2s 0 0 0.00000 0 298 - 0.00000 - - 3s 0 0 0.00000 0 296 - 0.00000 - - 3s 0 0 0.00000 0 296 - 0.00000 - - 3s 0 0 0.00000 0 298 - 0.00000 - - 4s 0 0 0.00000 0 296 - 0.00000 - - 4s 0 0 0.00000 0 302 - 0.00000 - - 4s 0 0 0.00000 0 302 - 0.00000 - - 5s 0 2 0.00000 0 302 - 0.00000 - - 5s 517 33 infeasible 15 - 0.00000 - 149 10s 1138 35 infeasible 17 - 0.00000 - 150 15s 1686 37 0.00000 16 298 - 0.00000 - 154 20s 2204 25 0.00000 7 503 - 0.00000 - 152 25s 2207 27 0.00000 6 333 - 0.00000 - 152 30s 2211 30 0.00000 16 292 - 0.00000 - 152 35s 2215 32 0.00000 10 431 - 0.00000 - 152 41s 2291 43 infeasible 31 - 0.00000 - 177 45s 2643 65 0.00000 26 306 - 0.00000 - 182 50s 3003 109 0.00000 29 326 - 0.00000 - 185 55s 3379 109 infeasible 34 - 0.00000 - 187 60s 3714 67 infeasible 27 - 0.00000 - 191 65s 4045 108 infeasible 36 - 0.00000 - 193 70s 4324 105 0.00000 32 372 - 0.00000 - 197 75s 4682 126 infeasible 32 - 0.00000 - 198 80s 5022 126 0.00000 21 352 - 0.00000 - 200 85s 5319 123 0.00000 27 310 - 0.00000 - 202 90s 5647 123 0.00000 30 312 - 0.00000 - 203 95s 5964 94 0.00000 25 324 - 0.00000 - 205 100s 6253 79 infeasible 28 - 0.00000 - 207 105s 6575 81 infeasible 32 - 0.00000 - 208 110s 6851 75 0.00000 31 384 - 0.00000 - 210 115s 7114 48 infeasible 37 - 0.00000 - 212 120s 7406 45 0.00000 27 404 - 0.00000 - 214 125s 7698 23 0.00000 23 312 - 0.00000 - 215 130s Cutting planes: Gomory: 4 Zero half: 9 Explored 7898 nodes (1756081 simplex iterations) in 134.00 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