current bounds on the number of colors: 0 -- 249 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:48:03 2012 Optimize a model with 39185 rows, 31190 columns and 147684 nonzeros Presolve removed 19 rows and 2356 columns Presolve time: 0.20s Presolved: 39166 rows, 28834 columns, 145328 nonzeros Variable types: 0 continuous, 28834 integer (28834 binary) Root relaxation: objective 0.000000e+00, 434 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 (434 simplex iterations) in 0.23 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 -- 124 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:48:04 2012 Optimize a model with 19717 rows, 15752 columns and 73842 nonzeros Presolve removed 19 rows and 1178 columns Presolve time: 0.13s Presolved: 19698 rows, 14574 columns, 72664 nonzeros Variable types: 0 continuous, 14574 integer (14574 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 -- 62 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:48:04 2012 Optimize a model with 9983 rows, 8033 columns and 36921 nonzeros Presolve removed 19 rows and 589 columns Presolve time: 0.06s Presolved: 9964 rows, 7444 columns, 36332 nonzeros Variable types: 0 continuous, 7444 integer (7444 binary) Root relaxation: objective 0.000000e+00, 433 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 (433 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 -- 31 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:48:05 2012 Optimize a model with 4959 rows, 4049 columns and 17865 nonzeros Presolve removed 19 rows and 285 columns Presolve time: 0.02s Presolved: 4940 rows, 3764 columns, 17580 nonzeros Variable types: 0 continuous, 3764 integer (3764 binary) Root relaxation: objective 0.000000e+00, 457 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 (457 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 16:48:05 2012 Optimize a model with 2447 rows, 2057 columns and 8337 nonzeros Presolve removed 19 rows and 133 columns Presolve time: 0.01s Presolved: 2428 rows, 1924 columns, 8204 nonzeros Variable types: 0 continuous, 1924 integer (1924 binary) Root relaxation: objective 0.000000e+00, 426 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 (426 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 16:48:05 2012 Optimize a model with 1191 rows, 1061 columns and 3573 nonzeros Presolve removed 19 rows and 57 columns Presolve time: 0.00s Presolved: 1172 rows, 1004 columns, 3516 nonzeros Variable types: 0 continuous, 1004 integer (1004 binary) Root relaxation: objective 0.000000e+00, 471 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 (787 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 16:48:05 2012 Optimize a model with 563 rows, 563 columns and 1191 nonzeros Presolve removed 563 rows and 563 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 16:48:05 2012 Optimize a model with 877 rows, 812 columns and 2382 nonzeros Presolve removed 257 rows and 280 columns Presolve time: 0.00s Presolved: 620 rows, 532 columns, 1860 nonzeros Variable types: 0 continuous, 532 integer (532 binary) Root relaxation: objective 0.000000e+00, 252 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 0 219 - 0.00000 - - 0s Explored 0 nodes (840 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