current bounds on the number of colors: 0 -- 230 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:57 2012 Optimize a model with 33695 rows, 26741 columns and 126845 nonzeros Presolve removed 16 rows and 1840 columns Presolve time: 0.16s Presolved: 33679 rows, 24901 columns, 125005 nonzeros Variable types: 0 continuous, 24901 integer (24901 binary) Root relaxation: objective 0.000000e+00, 406 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 (406 simplex iterations) in 0.19 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 -- 115 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:58 2012 Optimize a model with 16817 rows, 13401 columns and 62871 nonzeros Presolve removed 16 rows and 912 columns Presolve time: 0.12s Presolved: 16801 rows, 12489 columns, 61959 nonzeros Variable types: 0 continuous, 12489 integer (12489 binary) Root relaxation: objective 0.000000e+00, 410 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 (410 simplex iterations) in 0.14 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 -- 57 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:58 2012 Optimize a model with 8378 rows, 6731 columns and 30884 nonzeros Presolve removed 16 rows and 448 columns Presolve time: 0.05s Presolved: 8362 rows, 6283 columns, 30436 nonzeros Variable types: 0 continuous, 6283 integer (6283 binary) Root relaxation: objective 0.000000e+00, 409 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 (409 simplex iterations) in 0.06 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 -- 28 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:58 2012 Optimize a model with 4304 rows, 3511 columns and 15442 nonzeros Presolve removed 16 rows and 224 columns Presolve time: 0.02s Presolved: 4288 rows, 3287 columns, 15218 nonzeros Variable types: 0 continuous, 3287 integer (3287 binary) Root relaxation: objective 0.000000e+00, 427 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 (427 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 -- 14 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:58 2012 Optimize a model with 2267 rows, 1901 columns and 7721 nonzeros Presolve removed 16 rows and 112 columns Presolve time: 0.01s Presolved: 2251 rows, 1789 columns, 7609 nonzeros Variable types: 0 continuous, 1789 integer (1789 binary) Root relaxation: objective 0.000000e+00, 398 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 (577 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 16:39:59 2012 Optimize a model with 1103 rows, 981 columns and 3309 nonzeros Presolve removed 16 rows and 48 columns Presolve time: 0.00s Presolved: 1087 rows, 933 columns, 3261 nonzeros Variable types: 0 continuous, 933 integer (933 binary) Root relaxation: objective 0.000000e+00, 432 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 (620 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 16:39:59 2012 Optimize a model with 521 rows, 521 columns and 1103 nonzeros Presolve removed 521 rows and 521 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 16:39:59 2012 Optimize a model with 812 rows, 751 columns and 2206 nonzeros Presolve removed 230 rows and 246 columns Presolve time: 0.00s Presolved: 582 rows, 505 columns, 1746 nonzeros Variable types: 0 continuous, 505 integer (505 binary) Root relaxation: objective 0.000000e+00, 253 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 0 214 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (837 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