current bounds on the number of colors: 0 -- 209 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:49 2012 Optimize a model with 25585 rows, 21980 columns and 97864 nonzeros Presolve removed 26 rows and 2704 columns Presolve time: 0.15s Presolved: 25559 rows, 19276 columns, 95160 nonzeros Variable types: 0 continuous, 19276 integer (19276 binary) Root relaxation: objective 0.000000e+00, 341 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 (341 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 -- 104 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:50 2012 Optimize a model with 12897 rows, 11112 columns and 48932 nonzeros Presolve removed 26 rows and 1352 columns Presolve time: 0.11s Presolved: 12871 rows, 9760 columns, 47580 nonzeros Variable types: 0 continuous, 9760 integer (9760 binary) Root relaxation: objective 0.000000e+00, 341 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 (341 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 -- 52 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:50 2012 Optimize a model with 6553 rows, 5678 columns and 24466 nonzeros Presolve removed 26 rows and 676 columns Presolve time: 0.04s Presolved: 6527 rows, 5002 columns, 23790 nonzeros Variable types: 0 continuous, 5002 integer (5002 binary) Root relaxation: objective 0.000000e+00, 342 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 (342 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 -- 26 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:50 2012 Optimize a model with 3381 rows, 2961 columns and 12233 nonzeros Presolve removed 26 rows and 338 columns Presolve time: 0.01s Presolved: 3355 rows, 2623 columns, 11895 nonzeros Variable types: 0 continuous, 2623 integer (2623 binary) Root relaxation: objective 0.000000e+00, 354 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 (535 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 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:50 2012 Optimize a model with 1673 rows, 1498 columns and 5646 nonzeros Presolve removed 26 rows and 156 columns Presolve time: 0.01s Presolved: 1647 rows, 1342 columns, 5490 nonzeros Variable types: 0 continuous, 1342 integer (1342 binary) Root relaxation: objective 0.000000e+00, 379 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 (559 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 16:32:51 2012 Optimize a model with 941 rows, 871 columns and 2823 nonzeros Presolve removed 26 rows and 78 columns Presolve time: 0.00s Presolved: 915 rows, 793 columns, 2745 nonzeros Variable types: 0 continuous, 793 integer (793 binary) Root relaxation: objective 0.000000e+00, 363 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 (363 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 16:32:51 2012 Optimize a model with 453 rows, 453 columns and 941 nonzeros Presolve removed 453 rows and 453 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 16:32:51 2012 Optimize a model with 697 rows, 662 columns and 1882 nonzeros Presolve removed 211 rows and 238 columns Presolve time: 0.00s Presolved: 486 rows, 424 columns, 1458 nonzeros Variable types: 0 continuous, 424 integer (424 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 0 181 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (676 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