current bounds on the number of colors: 0 -- 207 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:09 2012 Optimize a model with 22867 rows, 21541 columns and 89301 nonzeros Presolve removed 27 rows and 2781 columns Presolve time: 0.14s Presolved: 22840 rows, 18760 columns, 86520 nonzeros Variable types: 0 continuous, 18760 integer (18760 binary) Root relaxation: objective 0.000000e+00, 328 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 (328 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 16:32:09 2012 Optimize a model with 11427 rows, 10777 columns and 44217 nonzeros Presolve removed 27 rows and 1377 columns Presolve time: 0.10s Presolved: 11400 rows, 9400 columns, 42840 nonzeros Variable types: 0 continuous, 9400 integer (9400 binary) Root relaxation: objective 0.000000e+00, 336 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 (509 simplex iterations) in 0.13 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 16:32:09 2012 Optimize a model with 5707 rows, 5395 columns and 21675 nonzeros Presolve removed 27 rows and 675 columns Presolve time: 0.03s Presolved: 5680 rows, 4720 columns, 21000 nonzeros Variable types: 0 continuous, 4720 integer (4720 binary) Root relaxation: objective 0.000000e+00, 324 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 (324 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 16:32:10 2012 Optimize a model with 2847 rows, 2704 columns and 10404 nonzeros Presolve removed 27 rows and 324 columns Presolve time: 0.01s Presolved: 2820 rows, 2380 columns, 10080 nonzeros Variable types: 0 continuous, 2380 integer (2380 binary) Root relaxation: objective 0.000000e+00, 329 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 (329 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 16:32:10 2012 Optimize a model with 1527 rows, 1462 columns and 5202 nonzeros Presolve removed 27 rows and 162 columns Presolve time: 0.01s Presolved: 1500 rows, 1300 columns, 5040 nonzeros Variable types: 0 continuous, 1300 integer (1300 binary) Root relaxation: objective 0.000000e+00, 326 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 (326 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 16:32:10 2012 Optimize a model with 867 rows, 841 columns and 2601 nonzeros Presolve removed 27 rows and 81 columns Presolve time: 0.00s Presolved: 840 rows, 760 columns, 2520 nonzeros Variable types: 0 continuous, 760 integer (760 binary) Root relaxation: objective 0.000000e+00, 344 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 (479 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 16:32:10 2012 Optimize a model with 427 rows, 427 columns and 867 nonzeros Presolve removed 427 rows and 427 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 16:32:10 2012 Optimize a model with 647 rows, 634 columns and 1734 nonzeros Presolve removed 217 rows and 249 columns Presolve time: 0.00s Presolved: 430 rows, 385 columns, 1290 nonzeros Variable types: 0 continuous, 385 integer (385 binary) Root relaxation: objective 0.000000e+00, 186 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 0 170 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (634 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