current bounds on the number of colors: 0 -- 241 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:28 2012 Optimize a model with 38281 rows, 29237 columns and 143040 nonzeros Presolve removed 17 rows and 2040 columns Presolve time: 0.19s Presolved: 38264 rows, 27197 columns, 141000 nonzeros Variable types: 0 continuous, 27197 integer (27197 binary) Root relaxation: objective 0.000000e+00, 430 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 (430 simplex iterations) in 0.22 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 -- 120 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:29 2012 Optimize a model with 19261 rows, 14777 columns and 71520 nonzeros Presolve removed 17 rows and 1020 columns Presolve time: 0.13s Presolved: 19244 rows, 13757 columns, 70500 nonzeros Variable types: 0 continuous, 13757 integer (13757 binary) Root relaxation: objective 0.000000e+00, 431 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 (431 simplex iterations) in 0.15 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 -- 60 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:29 2012 Optimize a model with 9751 rows, 7547 columns and 35760 nonzeros Presolve removed 17 rows and 510 columns Presolve time: 0.06s Presolved: 9734 rows, 7037 columns, 35250 nonzeros Variable types: 0 continuous, 7037 integer (7037 binary) Root relaxation: objective 0.000000e+00, 436 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 (436 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 -- 30 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:29 2012 Optimize a model with 4996 rows, 3932 columns and 17880 nonzeros Presolve removed 17 rows and 255 columns Presolve time: 0.02s Presolved: 4979 rows, 3677 columns, 17625 nonzeros Variable types: 0 continuous, 3677 integer (3677 binary) Root relaxation: objective 0.000000e+00, 451 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 (451 simplex iterations) in 0.03 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:29 2012 Optimize a model with 2460 rows, 2004 columns and 8344 nonzeros Presolve removed 17 rows and 119 columns Presolve time: 0.01s Presolved: 2443 rows, 1885 columns, 8225 nonzeros Variable types: 0 continuous, 1885 integer (1885 binary) Root relaxation: objective 0.000000e+00, 440 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 (644 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:44:30 2012 Optimize a model with 1192 rows, 1040 columns and 3576 nonzeros Presolve removed 17 rows and 51 columns Presolve time: 0.00s Presolved: 1175 rows, 989 columns, 3525 nonzeros Variable types: 0 continuous, 989 integer (989 binary) Root relaxation: objective 0.000000e+00, 471 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 (683 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 16:44:30 2012 Optimize a model with 558 rows, 558 columns and 1192 nonzeros Presolve removed 558 rows and 558 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 16:44:30 2012 Optimize a model with 875 rows, 799 columns and 2384 nonzeros Presolve removed 247 rows and 267 columns Presolve time: 0.00s Presolved: 628 rows, 532 columns, 1884 nonzeros Variable types: 0 continuous, 532 integer (532 binary) Root relaxation: objective 0.000000e+00, 246 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 0 218 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (812 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