current bounds on the number of colors: 0 -- 221 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:33 2012 Optimize a model with 30911 rows, 24589 columns and 116380 nonzeros Presolve removed 20 rows and 2200 columns Presolve time: 0.14s Presolved: 30891 rows, 22389 columns, 114180 nonzeros Variable types: 0 continuous, 22389 integer (22389 binary) Root relaxation: objective 0.000000e+00, 397 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 (397 simplex iterations) in 0.17 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 -- 110 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:33 2012 Optimize a model with 15566 rows, 12434 columns and 58190 nonzeros Presolve removed 20 rows and 1100 columns Presolve time: 0.13s Presolved: 15546 rows, 11334 columns, 57090 nonzeros Variable types: 0 continuous, 11334 integer (11334 binary) Root relaxation: objective 0.000000e+00, 404 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 (404 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 -- 55 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:34 2012 Optimize a model with 7754 rows, 6246 columns and 28566 nonzeros Presolve removed 20 rows and 540 columns Presolve time: 0.05s Presolved: 7734 rows, 5706 columns, 28026 nonzeros Variable types: 0 continuous, 5706 integer (5706 binary) Root relaxation: objective 0.000000e+00, 397 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 (597 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 -- 27 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:34 2012 Optimize a model with 3848 rows, 3152 columns and 13754 nonzeros Presolve removed 20 rows and 260 columns Presolve time: 0.02s Presolved: 3828 rows, 2892 columns, 13494 nonzeros Variable types: 0 continuous, 2892 integer (2892 binary) Root relaxation: objective 0.000000e+00, 431 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 (710 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 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:34 2012 Optimize a model with 1895 rows, 1605 columns and 6348 nonzeros Presolve removed 20 rows and 120 columns Presolve time: 0.01s Presolved: 1875 rows, 1485 columns, 6228 nonzeros Variable types: 0 continuous, 1485 integer (1485 binary) Root relaxation: objective 0.000000e+00, 378 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 (550 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 16:36:34 2012 Optimize a model with 1058 rows, 942 columns and 3174 nonzeros Presolve removed 20 rows and 60 columns Presolve time: 0.00s Presolved: 1038 rows, 882 columns, 3114 nonzeros Variable types: 0 continuous, 882 integer (882 binary) Root relaxation: objective 0.000000e+00, 447 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 (938 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:34 2012 Optimize a model with 500 rows, 500 columns and 1058 nonzeros Presolve removed 500 rows and 500 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 16:36:34 2012 Optimize a model with 779 rows, 721 columns and 2116 nonzeros Presolve removed 223 rows and 244 columns Presolve time: 0.00s Presolved: 556 rows, 477 columns, 1668 nonzeros Variable types: 0 continuous, 477 integer (477 binary) Root relaxation: objective 0.000000e+00, 211 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 0 193 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (748 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