current bounds on the number of colors: 0 -- 131 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:35 2012 Optimize a model with 5136 rows, 8592 columns and 23530 nonzeros Presolve removed 41 rows and 2665 columns Presolve time: 0.07s Presolved: 5095 rows, 5927 columns, 20865 nonzeros Variable types: 0 continuous, 5927 integer (5927 binary) Root relaxation: objective 0.000000e+00, 154 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 (154 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 -- 65 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:35 2012 Optimize a model with 2595 rows, 4269 columns and 11584 nonzeros Presolve removed 41 rows and 1312 columns Presolve time: 0.02s Presolved: 2554 rows, 2957 columns, 10272 nonzeros Variable types: 0 continuous, 2957 integer (2957 binary) Root relaxation: objective 0.000000e+00, 153 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 (153 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 -- 32 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:35 2012 Optimize a model with 1363 rows, 2173 columns and 5792 nonzeros Presolve removed 41 rows and 656 columns Presolve time: 0.01s Presolved: 1322 rows, 1517 columns, 5136 nonzeros Variable types: 0 continuous, 1517 integer (1517 binary) Root relaxation: objective 0.000000e+00, 157 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 (157 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 -- 16 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:35 2012 Optimize a model with 747 rows, 1125 columns and 2896 nonzeros Presolve removed 41 rows and 328 columns Presolve time: 0.00s Presolved: 706 rows, 797 columns, 2568 nonzeros Variable types: 0 continuous, 797 integer (797 binary) Root relaxation: objective 0.000000e+00, 157 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 (157 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 -- 8 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:35 2012 Optimize a model with 439 rows, 601 columns and 1448 nonzeros Presolve removed 41 rows and 164 columns Presolve time: 0.00s Presolved: 398 rows, 437 columns, 1284 nonzeros Variable types: 0 continuous, 437 integer (437 binary) Root relaxation: objective 0.000000e+00, 127 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 (163 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 -- 4 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:35 2012 Optimize a model with 285 rows, 339 columns and 724 nonzeros Presolve removed 143 rows and 190 columns Presolve time: 0.00s Presolved: 142 rows, 149 columns, 426 nonzeros Variable types: 0 continuous, 149 integer (149 binary) Root relaxation: objective 0.000000e+00, 70 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 38 - 0.00000 - - 0s Explored 0 nodes (182 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - current bounds on the number of colors: 2 -- 4 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:35 2012 Optimize a model with 362 rows, 470 columns and 1086 nonzeros Presolve removed 41 rows and 123 columns Presolve time: 0.00s Presolved: 321 rows, 347 columns, 963 nonzeros Variable types: 0 continuous, 347 integer (347 binary) Root relaxation: objective 0.000000e+00, 130 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 (130 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% optimal solution found: number of colors: 3