current bounds on the number of colors: 0 -- 193 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 06:18:55 2012 Optimize a model with 91681 rows, 19481 columns and 292992 nonzeros Presolve time: 0.31s Presolved: 91681 rows, 19481 columns, 292992 nonzeros Variable types: 0 continuous, 19481 integer (19481 binary) Root relaxation: objective 0.000000e+00, 718 iterations, 0.08 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 (1140 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 -- 96 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 06:18:57 2012 Optimize a model with 45937 rows, 10217 columns and 146496 nonzeros Presolve time: 0.16s Presolved: 45937 rows, 10217 columns, 146496 nonzeros Variable types: 0 continuous, 10217 integer (10217 binary) Root relaxation: objective 0.000000e+00, 550 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 (927 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 -- 48 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 06:18:58 2012 Optimize a model with 23065 rows, 5585 columns and 73248 nonzeros Presolve time: 0.09s Presolved: 23065 rows, 5585 columns, 73248 nonzeros Variable types: 0 continuous, 5585 integer (5585 binary) Root relaxation: objective 0.000000e+00, 442 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 (804 simplex iterations) in 0.14 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 06:18:58 2012 Optimize a model with 11629 rows, 3269 columns and 36624 nonzeros Presolve time: 0.04s Presolved: 11629 rows, 3269 columns, 36624 nonzeros Variable types: 0 continuous, 3269 integer (3269 binary) Root relaxation: objective 0.000000e+00, 410 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 (741 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 -- 12 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 06:18:58 2012 Optimize a model with 5911 rows, 2111 columns and 18312 nonzeros Presolve time: 0.02s Presolved: 5911 rows, 2111 columns, 18312 nonzeros Variable types: 0 continuous, 2111 integer (2111 binary) Root relaxation: objective 0.000000e+00, 407 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 (1545 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 06:18:58 2012 Optimize a model with 3052 rows, 1532 columns and 9156 nonzeros Presolve time: 0.01s Presolved: 3052 rows, 1532 columns, 9156 nonzeros Variable types: 0 continuous, 1532 integer (1532 binary) Root relaxation: objective 0.000000e+00, 442 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 0 384 - 0.00000 - - 0s 0 0 0.00000 0 384 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4841 simplex iterations) in 0.64 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 06:18:59 2012 Optimize a model with 4005 rows, 1725 columns and 12208 nonzeros Presolve time: 0.01s Presolved: 4005 rows, 1725 columns, 12208 nonzeros Variable types: 0 continuous, 1725 integer (1725 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 0.00000 0 376 - 0.00000 - - 0s 0 0 0.00000 0 356 - 0.00000 - - 0s 0 0 0.00000 0 401 - 0.00000 - - 1s 0 0 0.00000 0 422 - 0.00000 - - 1s 0 0 0.00000 0 330 - 0.00000 - - 1s 0 0 0.00000 0 326 - 0.00000 - - 2s 0 0 0.00000 0 326 - 0.00000 - - 3s 0 0 0.00000 0 326 - 0.00000 - - 3s 0 0 0.00000 0 324 - 0.00000 - - 4s 0 0 0.00000 0 322 - 0.00000 - - 4s 0 0 0.00000 0 308 - 0.00000 - - 5s 0 0 0.00000 0 308 - 0.00000 - - 5s 0 0 0.00000 0 308 - 0.00000 - - 6s 0 2 0.00000 0 308 - 0.00000 - - 6s 222 32 0.00000 16 352 - 0.00000 - 192 10s 704 58 0.00000 12 358 - 0.00000 - 164 15s 805 77 0.00000 17 334 - 0.00000 - 161 21s 808 79 0.00000 16 338 - 0.00000 - 161 25s 811 81 0.00000 13 308 - 0.00000 - 160 31s 813 82 0.00000 15 294 - 0.00000 - 160 35s 816 84 0.00000 9 311 - 0.00000 - 159 40s 826 91 0.00000 17 422 - 0.00000 - 249 45s 997 53 0.00000 24 378 - 0.00000 - 248 50s 1196 22 infeasible 28 - 0.00000 - 255 55s 1415 17 0.00000 21 342 - 0.00000 - 258 60s Cutting planes: Zero half: 17 Explored 1591 nodes (463012 simplex iterations) in 64.37 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 06:20:04 2012 Optimize a model with 4958 rows, 1918 columns and 15260 nonzeros Presolve time: 0.01s Presolved: 4958 rows, 1918 columns, 15260 nonzeros Variable types: 0 continuous, 1918 integer (1918 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 0 236 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (4421 simplex iterations) in 0.38 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