current bounds on the number of colors: 0 -- 247 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:10 2012 Optimize a model with 40960 rows, 30712 columns and 152520 nonzeros Presolve removed 15 rows and 1845 columns Presolve time: 0.20s Presolved: 40945 rows, 28867 columns, 150675 nonzeros Variable types: 0 continuous, 28867 integer (28867 binary) Root relaxation: objective 0.000000e+00, 464 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 (464 simplex iterations) in 0.24 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 -- 123 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:10 2012 Optimize a model with 20438 rows, 15398 columns and 75640 nonzeros Presolve removed 15 rows and 915 columns Presolve time: 0.13s Presolved: 20423 rows, 14483 columns, 74725 nonzeros Variable types: 0 continuous, 14483 integer (14483 binary) Root relaxation: objective 0.000000e+00, 466 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 (466 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 -- 61 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:11 2012 Optimize a model with 10177 rows, 7741 columns and 37200 nonzeros Presolve removed 15 rows and 450 columns Presolve time: 0.06s Presolved: 10162 rows, 7291 columns, 36750 nonzeros Variable types: 0 continuous, 7291 integer (7291 binary) Root relaxation: objective 0.000000e+00, 479 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 (479 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 16:47:11 2012 Optimize a model with 5212 rows, 4036 columns and 18600 nonzeros Presolve removed 15 rows and 225 columns Presolve time: 0.02s Presolved: 5197 rows, 3811 columns, 18375 nonzeros Variable types: 0 continuous, 3811 integer (3811 binary) Root relaxation: objective 0.000000e+00, 477 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 (779 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:11 2012 Optimize a model with 2564 rows, 2060 columns and 8680 nonzeros Presolve removed 15 rows and 105 columns Presolve time: 0.01s Presolved: 2549 rows, 1955 columns, 8575 nonzeros Variable types: 0 continuous, 1955 integer (1955 binary) Root relaxation: objective 0.000000e+00, 443 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 (443 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:11 2012 Optimize a model with 1240 rows, 1072 columns and 3720 nonzeros Presolve removed 15 rows and 45 columns Presolve time: 0.00s Presolved: 1225 rows, 1027 columns, 3675 nonzeros Variable types: 0 continuous, 1027 integer (1027 binary) Root relaxation: objective 0.000000e+00, 466 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 (466 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 16:47:11 2012 Optimize a model with 578 rows, 578 columns and 1240 nonzeros Presolve removed 578 rows and 578 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 16:47:11 2012 Optimize a model with 909 rows, 825 columns and 2480 nonzeros Presolve removed 251 rows and 268 columns Presolve time: 0.00s Presolved: 658 rows, 557 columns, 1974 nonzeros Variable types: 0 continuous, 557 integer (557 binary) Root relaxation: objective 0.000000e+00, 245 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 0 225 - 0.00000 - - 0s Explored 0 nodes (848 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