current bounds on the number of colors: 0 -- 206 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:49 2012 Optimize a model with 23175 rows, 21441 columns and 90125 nonzeros Presolve removed 20 rows and 2060 columns Presolve time: 0.14s Presolved: 23155 rows, 19381 columns, 88065 nonzeros Variable types: 0 continuous, 19381 integer (19381 binary) Root relaxation: objective 0.000000e+00, 339 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 (339 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 -- 103 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:49 2012 Optimize a model with 11579 rows, 10729 columns and 44625 nonzeros Presolve removed 20 rows and 1020 columns Presolve time: 0.11s Presolved: 11559 rows, 9709 columns, 43605 nonzeros Variable types: 0 continuous, 9709 integer (9709 binary) Root relaxation: objective 0.000000e+00, 337 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 (337 simplex iterations) in 0.12 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 -- 51 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:50 2012 Optimize a model with 5781 rows, 5373 columns and 21875 nonzeros Presolve removed 20 rows and 500 columns Presolve time: 0.03s Presolved: 5761 rows, 4873 columns, 21375 nonzeros Variable types: 0 continuous, 4873 integer (4873 binary) Root relaxation: objective 0.000000e+00, 337 iterations, 0.00 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 (337 simplex iterations) in 0.04 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 -- 25 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:50 2012 Optimize a model with 2882 rows, 2695 columns and 10500 nonzeros Presolve removed 20 rows and 240 columns Presolve time: 0.01s Presolved: 2862 rows, 2455 columns, 10260 nonzeros Variable types: 0 continuous, 2455 integer (2455 binary) Root relaxation: objective 0.000000e+00, 327 iterations, 0.00 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 (327 simplex iterations) in 0.02 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 16:31:50 2012 Optimize a model with 1544 rows, 1459 columns and 5250 nonzeros Presolve removed 20 rows and 120 columns Presolve time: 0.01s Presolved: 1524 rows, 1339 columns, 5130 nonzeros Variable types: 0 continuous, 1339 integer (1339 binary) Root relaxation: objective 0.000000e+00, 339 iterations, 0.00 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 (490 simplex iterations) in 0.01 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 16:31:50 2012 Optimize a model with 875 rows, 841 columns and 2625 nonzeros Presolve removed 20 rows and 60 columns Presolve time: 0.00s Presolved: 855 rows, 781 columns, 2565 nonzeros Variable types: 0 continuous, 781 integer (781 binary) Root relaxation: objective 0.000000e+00, 374 iterations, 0.00 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 (374 simplex iterations) in 0.01 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:50 2012 Optimize a model with 429 rows, 429 columns and 875 nonzeros Presolve removed 429 rows and 429 columns Presolve time: 0.00s Explored 0 nodes (0 simplex iterations) in 0.00 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: 1 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:50 2012 Optimize a model with 652 rows, 635 columns and 1750 nonzeros Presolve removed 214 rows and 238 columns Presolve time: 0.00s Presolved: 438 rows, 397 columns, 1314 nonzeros Variable types: 0 continuous, 397 integer (397 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 0 175 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (653 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - optimal solution found: number of colors: 3