current bounds on the number of colors: 0 -- 197 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 07:52:40 2012 Optimize a model with 98197 rows, 20306 columns and 313306 nonzeros Presolve time: 0.32s Presolved: 98197 rows, 20306 columns, 313306 nonzeros Variable types: 0 continuous, 20306 integer (20306 binary) Root relaxation: objective 0.000000e+00, 662 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 (1092 simplex iterations) in 0.52 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 -- 98 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 07:52:42 2012 Optimize a model with 49197 rows, 10653 columns and 156653 nonzeros Presolve time: 0.16s Presolved: 49197 rows, 10653 columns, 156653 nonzeros Variable types: 0 continuous, 10653 integer (10653 binary) Root relaxation: objective 0.000000e+00, 568 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 (1027 simplex iterations) in 0.27 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 -- 49 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 07:52:43 2012 Optimize a model with 24197 rows, 5728 columns and 76728 nonzeros Presolve time: 0.10s Presolved: 24197 rows, 5728 columns, 76728 nonzeros Variable types: 0 continuous, 5728 integer (5728 binary) Root relaxation: objective 0.000000e+00, 451 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 (1069 simplex iterations) in 0.16 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 -- 24 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 07:52:43 2012 Optimize a model with 12197 rows, 3364 columns and 38364 nonzeros Presolve time: 0.04s Presolved: 12197 rows, 3364 columns, 38364 nonzeros Variable types: 0 continuous, 3364 integer (3364 binary) Root relaxation: objective 0.000000e+00, 412 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 (773 simplex iterations) in 0.07 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 -- 12 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 07:52:44 2012 Optimize a model with 6197 rows, 2182 columns and 19182 nonzeros Presolve time: 0.02s Presolved: 6197 rows, 2182 columns, 19182 nonzeros Variable types: 0 continuous, 2182 integer (2182 binary) Root relaxation: objective 0.000000e+00, 426 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 (1646 simplex iterations) in 0.07 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 07:52:44 2012 Optimize a model with 3197 rows, 1591 columns and 9591 nonzeros Presolve time: 0.01s Presolved: 3197 rows, 1591 columns, 9591 nonzeros Variable types: 0 continuous, 1591 integer (1591 binary) Root relaxation: objective 0.000000e+00, 462 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 0 326 - 0.00000 - - 0s 0 0 0.00000 0 380 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (6749 simplex iterations) in 0.93 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 07:52:45 2012 Optimize a model with 4197 rows, 1788 columns and 12788 nonzeros Presolve time: 0.01s Presolved: 4197 rows, 1788 columns, 12788 nonzeros Variable types: 0 continuous, 1788 integer (1788 binary) Root relaxation: objective 0.000000e+00, 422 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 0 380 - 0.00000 - - 0s 0 0 0.00000 0 372 - 0.00000 - - 0s 0 0 0.00000 0 352 - 0.00000 - - 1s 0 0 0.00000 0 499 - 0.00000 - - 1s 0 0 0.00000 0 336 - 0.00000 - - 2s 0 0 0.00000 0 330 - 0.00000 - - 3s 0 0 0.00000 0 332 - 0.00000 - - 4s 0 0 0.00000 0 340 - 0.00000 - - 4s 0 0 0.00000 0 330 - 0.00000 - - 5s 0 0 0.00000 0 326 - 0.00000 - - 6s 0 0 0.00000 0 344 - 0.00000 - - 6s 0 0 0.00000 0 343 - 0.00000 - - 7s 0 2 0.00000 0 340 - 0.00000 - - 8s 189 37 0.00000 18 342 - 0.00000 - 140 10s 582 109 0.00000 15 362 - 0.00000 - 148 15s 605 110 0.00000 16 336 - 0.00000 - 148 20s 608 112 0.00000 14 306 - 0.00000 - 147 26s 610 113 0.00000 19 300 - 0.00000 - 147 30s 613 115 0.00000 12 288 - 0.00000 - 146 35s 616 117 0.00000 14 274 - 0.00000 - 145 41s 619 119 0.00000 12 264 - 0.00000 - 145 46s 626 124 0.00000 16 439 - 0.00000 - 291 50s 679 133 0.00000 23 354 - 0.00000 - 292 55s 826 95 0.00000 25 480 - 0.00000 - 298 60s 978 40 0.00000 19 433 - 0.00000 - 303 65s 1098 53 0.00000 27 410 - 0.00000 - 311 70s 1234 51 infeasible 28 - 0.00000 - 316 75s 1371 42 infeasible 25 - 0.00000 - 320 80s 1513 44 0.00000 24 389 - 0.00000 - 320 85s 1634 37 0.00000 24 481 - 0.00000 - 326 90s 1752 27 infeasible 22 - 0.00000 - 331 95s 1898 21 0.00000 21 457 - 0.00000 - 330 100s 2017 12 0.00000 20 445 - 0.00000 - 333 105s Cutting planes: Gomory: 1 Zero half: 12 Explored 2096 nodes (751920 simplex iterations) in 108.09 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - current bounds on the number of colors: 4 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 07:54:33 2012 Optimize a model with 5197 rows, 1985 columns and 15985 nonzeros Presolve time: 0.01s Presolved: 5197 rows, 1985 columns, 15985 nonzeros Variable types: 0 continuous, 1985 integer (1985 binary) Root relaxation: objective 0.000000e+00, 433 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 0 203 - 0.00000 - - 0s * 0 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Gomory: 5 Clique: 26 Zero half: 38 Explored 0 nodes (6755 simplex iterations) in 0.62 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% optimal solution found: number of colors: 5