current bounds on the number of colors: 0 -- 247 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:15 2012 Optimize a model with 37147 rows, 30681 columns and 141081 nonzeros Presolve removed 19 rows and 2337 columns Presolve time: 0.19s Presolved: 37128 rows, 28344 columns, 138744 nonzeros Variable types: 0 continuous, 28344 integer (28344 binary) Root relaxation: objective 0.000000e+00, 433 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 (433 simplex iterations) in 0.22 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 16:47:16 2012 Optimize a model with 18547 rows, 15367 columns and 69967 nonzeros Presolve removed 19 rows and 1159 columns Presolve time: 0.13s Presolved: 18528 rows, 14208 columns, 68808 nonzeros Variable types: 0 continuous, 14208 integer (14208 binary) Root relaxation: objective 0.000000e+00, 434 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 (434 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 16:47:16 2012 Optimize a model with 9247 rows, 7710 columns and 34410 nonzeros Presolve removed 19 rows and 570 columns Presolve time: 0.06s Presolved: 9228 rows, 7140 columns, 33840 nonzeros Variable types: 0 continuous, 7140 integer (7140 binary) Root relaxation: objective 0.000000e+00, 438 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 (438 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 16:47:17 2012 Optimize a model with 4747 rows, 4005 columns and 17205 nonzeros Presolve removed 19 rows and 285 columns Presolve time: 0.02s Presolved: 4728 rows, 3720 columns, 16920 nonzeros Variable types: 0 continuous, 3720 integer (3720 binary) Root relaxation: objective 0.000000e+00, 462 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 (713 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:17 2012 Optimize a model with 2347 rows, 2029 columns and 8029 nonzeros Presolve removed 19 rows and 133 columns Presolve time: 0.01s Presolved: 2328 rows, 1896 columns, 7896 nonzeros Variable types: 0 continuous, 1896 integer (1896 binary) Root relaxation: objective 0.000000e+00, 422 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 (422 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 16:47:17 2012 Optimize a model with 1147 rows, 1041 columns and 3441 nonzeros Presolve removed 19 rows and 57 columns Presolve time: 0.00s Presolved: 1128 rows, 984 columns, 3384 nonzeros Variable types: 0 continuous, 984 integer (984 binary) Root relaxation: objective 0.000000e+00, 444 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 (616 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 16:47:17 2012 Optimize a model with 547 rows, 547 columns and 1147 nonzeros Presolve removed 547 rows and 547 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 16:47:17 2012 Optimize a model with 847 rows, 794 columns and 2294 nonzeros Presolve removed 251 rows and 272 columns Presolve time: 0.00s Presolved: 596 rows, 522 columns, 1788 nonzeros Variable types: 0 continuous, 522 integer (522 binary) Root relaxation: objective 0.000000e+00, 271 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 0 224 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (850 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