current bounds on the number of colors: 0 -- 186 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:36 2012 Optimize a model with 19065 rows, 17501 columns and 73935 nonzeros Presolve removed 26 rows and 2418 columns Presolve time: 0.13s Presolved: 19039 rows, 15083 columns, 71517 nonzeros Variable types: 0 continuous, 15083 integer (15083 binary) Root relaxation: objective 0.000000e+00, 303 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 (303 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 -- 93 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:37 2012 Optimize a model with 9524 rows, 8759 columns and 36570 nonzeros Presolve removed 26 rows and 1196 columns Presolve time: 0.08s Presolved: 9498 rows, 7563 columns, 35374 nonzeros Variable types: 0 continuous, 7563 integer (7563 binary) Root relaxation: objective 0.000000e+00, 305 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 (305 simplex iterations) in 0.09 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 -- 46 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:37 2012 Optimize a model with 4855 rows, 4481 columns and 18285 nonzeros Presolve removed 26 rows and 598 columns Presolve time: 0.03s Presolved: 4829 rows, 3883 columns, 17687 nonzeros Variable types: 0 continuous, 3883 integer (3883 binary) Root relaxation: objective 0.000000e+00, 307 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 (307 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 -- 23 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:37 2012 Optimize a model with 2419 rows, 2249 columns and 8745 nonzeros Presolve removed 26 rows and 286 columns Presolve time: 0.01s Presolved: 2393 rows, 1963 columns, 8459 nonzeros Variable types: 0 continuous, 1963 integer (1963 binary) Root relaxation: objective 0.000000e+00, 293 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 (293 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:37 2012 Optimize a model with 1201 rows, 1133 columns and 3975 nonzeros Presolve removed 26 rows and 130 columns Presolve time: 0.00s Presolved: 1175 rows, 1003 columns, 3845 nonzeros Variable types: 0 continuous, 1003 integer (1003 binary) Root relaxation: objective 0.000000e+00, 314 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 (469 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:37 2012 Optimize a model with 592 rows, 575 columns and 1590 nonzeros Presolve removed 186 rows and 212 columns Presolve time: 0.00s Presolved: 406 rows, 363 columns, 1218 nonzeros Variable types: 0 continuous, 363 integer (363 binary) Root relaxation: objective 0.000000e+00, 190 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 0 160 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (621 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 - current bounds on the number of colors: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:37 2012 Optimize a model with 795 rows, 761 columns and 2385 nonzeros Presolve removed 26 rows and 78 columns Presolve time: 0.00s Presolved: 769 rows, 683 columns, 2307 nonzeros Variable types: 0 continuous, 683 integer (683 binary) Root relaxation: objective 0.000000e+00, 278 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 (278 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