current bounds on the number of colors: 0 -- 189 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:37:18 2012 Optimize a model with 87139 rows, 18691 columns and 278616 nonzeros Presolve time: 0.28s Presolved: 87139 rows, 18691 columns, 278616 nonzeros Variable types: 0 continuous, 18691 integer (18691 binary) Root relaxation: objective 0.000000e+00, 691 iterations, 0.07 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 (1177 simplex iterations) in 0.48 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 -- 94 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:37:20 2012 Optimize a model with 43664 rows, 9808 columns and 139308 nonzeros Presolve time: 0.15s Presolved: 43664 rows, 9808 columns, 139308 nonzeros Variable types: 0 continuous, 9808 integer (9808 binary) Root relaxation: objective 0.000000e+00, 634 iterations, 0.05 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 (1085 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 -- 47 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 04:37:20 2012 Optimize a model with 21464 rows, 5272 columns and 68172 nonzeros Presolve time: 0.09s Presolved: 21464 rows, 5272 columns, 68172 nonzeros Variable types: 0 continuous, 5272 integer (5272 binary) Root relaxation: objective 0.000000e+00, 430 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 (812 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 04:37:21 2012 Optimize a model with 10364 rows, 3004 columns and 32604 nonzeros Presolve time: 0.03s Presolved: 10364 rows, 3004 columns, 32604 nonzeros Variable types: 0 continuous, 3004 integer (3004 binary) Root relaxation: objective 0.000000e+00, 381 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 0.06 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 04:37:21 2012 Optimize a model with 4814 rows, 1870 columns and 14820 nonzeros Presolve time: 0.01s Presolved: 4814 rows, 1870 columns, 14820 nonzeros Variable types: 0 continuous, 1870 integer (1870 binary) Root relaxation: objective 0.000000e+00, 419 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 0 116 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (4162 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 04:37:21 2012 Optimize a model with 2039 rows, 1303 columns and 5928 nonzeros Presolve removed 189 rows and 189 columns Presolve time: 0.01s Presolved: 1850 rows, 1114 columns, 5550 nonzeros Variable types: 0 continuous, 1114 integer (1114 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 0 189 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (819 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 04:37:21 2012 Optimize a model with 2964 rows, 1492 columns and 8892 nonzeros Presolve time: 0.01s Presolved: 2964 rows, 1492 columns, 8892 nonzeros Variable types: 0 continuous, 1492 integer (1492 binary) Root relaxation: objective 0.000000e+00, 445 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 0 376 - 0.00000 - - 0s 0 0 0.00000 0 372 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4750 simplex iterations) in 0.65 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 04:37:22 2012 Optimize a model with 3889 rows, 1681 columns and 11856 nonzeros Presolve time: 0.01s Presolved: 3889 rows, 1681 columns, 11856 nonzeros Variable types: 0 continuous, 1681 integer (1681 binary) Root relaxation: objective 0.000000e+00, 420 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 0 360 - 0.00000 - - 0s 0 0 0.00000 0 364 - 0.00000 - - 0s 0 0 0.00000 0 376 - 0.00000 - - 0s 0 0 0.00000 0 468 - 0.00000 - - 0s 0 0 0.00000 0 336 - 0.00000 - - 1s 0 0 0.00000 0 326 - 0.00000 - - 2s 0 0 0.00000 0 320 - 0.00000 - - 2s 0 0 0.00000 0 316 - 0.00000 - - 3s 0 0 0.00000 0 325 - 0.00000 - - 3s 0 0 0.00000 0 316 - 0.00000 - - 3s 0 0 0.00000 0 324 - 0.00000 - - 4s 0 0 0.00000 0 320 - 0.00000 - - 5s 0 0 0.00000 0 306 - 0.00000 - - 5s 0 0 0.00000 0 320 - 0.00000 - - 6s 0 0 0.00000 0 327 - 0.00000 - - 6s 0 0 0.00000 0 311 - 0.00000 - - 7s 0 2 0.00000 0 309 - 0.00000 - - 7s 257 27 0.00000 14 360 - 0.00000 - 136 10s 804 70 0.00000 3 487 - 0.00000 - 121 15s 807 72 0.00000 10 330 - 0.00000 - 121 20s 809 73 0.00000 3 424 - 0.00000 - 120 25s 813 76 0.00000 11 418 - 0.00000 - 120 30s 978 58 infeasible 25 - 0.00000 - 193 35s 1176 39 infeasible 25 - 0.00000 - 210 40s 1402 41 0.00000 22 374 - 0.00000 - 218 45s 1587 32 0.00000 18 415 - 0.00000 - 229 50s 1770 29 0.00000 22 350 - 0.00000 - 238 55s 1964 23 infeasible 24 - 0.00000 - 243 60s Cutting planes: Clique: 4 Zero half: 16 Explored 2150 nodes (589662 simplex iterations) in 64.99 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