current bounds on the number of colors: 0 -- 204 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:12 2012 Optimize a model with 20502 rows, 21007 columns and 81702 nonzeros Presolve removed 26 rows and 2652 columns Presolve time: 0.13s Presolved: 20476 rows, 18355 columns, 79050 nonzeros Variable types: 0 continuous, 18355 integer (18355 binary) Root relaxation: objective 0.000000e+00, 332 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 (332 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 -- 102 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:12 2012 Optimize a model with 10353 rows, 10603 columns and 40851 nonzeros Presolve removed 26 rows and 1326 columns Presolve time: 0.10s Presolved: 10327 rows, 9277 columns, 39525 nonzeros Variable types: 0 continuous, 9277 integer (9277 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 0.11 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 16:31:13 2012 Optimize a model with 5179 rows, 5299 columns and 20025 nonzeros Presolve removed 26 rows and 650 columns Presolve time: 0.03s Presolved: 5153 rows, 4649 columns, 19375 nonzeros Variable types: 0 continuous, 4649 integer (4649 binary) Root relaxation: objective 0.000000e+00, 330 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 (330 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 16:31:13 2012 Optimize a model with 2592 rows, 2647 columns and 9612 nonzeros Presolve removed 26 rows and 312 columns Presolve time: 0.01s Presolved: 2566 rows, 2335 columns, 9300 nonzeros Variable types: 0 continuous, 2335 integer (2335 binary) Root relaxation: objective 0.000000e+00, 322 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 (322 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 16:31:13 2012 Optimize a model with 1398 rows, 1423 columns and 4806 nonzeros Presolve removed 26 rows and 156 columns Presolve time: 0.00s Presolved: 1372 rows, 1267 columns, 4650 nonzeros Variable types: 0 continuous, 1267 integer (1267 binary) Root relaxation: objective 0.000000e+00, 311 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 (311 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 16:31:13 2012 Optimize a model with 801 rows, 811 columns and 2403 nonzeros Presolve removed 26 rows and 78 columns Presolve time: 0.00s Presolved: 775 rows, 733 columns, 2325 nonzeros Variable types: 0 continuous, 733 integer (733 binary) Root relaxation: objective 0.000000e+00, 320 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 (320 simplex iterations) in 0.00 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 16:31:13 2012 Optimize a model with 403 rows, 403 columns and 801 nonzeros Presolve removed 403 rows and 403 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 16:31:13 2012 Optimize a model with 602 rows, 607 columns and 1602 nonzeros Presolve removed 212 rows and 242 columns Presolve time: 0.00s Presolved: 390 rows, 365 columns, 1170 nonzeros Variable types: 0 continuous, 365 integer (365 binary) Root relaxation: objective 0.000000e+00, 193 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 0 164 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (607 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