current bounds on the number of colors: 0 -- 143 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:01 2012 Optimize a model with 8663 rows, 10273 columns and 35713 nonzeros Presolve removed 25 rows and 1775 columns Presolve time: 0.10s Presolved: 8638 rows, 8498 columns, 33938 nonzeros Variable types: 0 continuous, 8498 integer (8498 binary) Root relaxation: objective 0.000000e+00, 208 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 (208 simplex iterations) in 0.11 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 -- 71 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:02 2012 Optimize a model with 4343 rows, 5125 columns and 17605 nonzeros Presolve removed 25 rows and 875 columns Presolve time: 0.03s Presolved: 4318 rows, 4250 columns, 16730 nonzeros Variable types: 0 continuous, 4250 integer (4250 binary) Root relaxation: objective 0.000000e+00, 209 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 (209 simplex iterations) in 0.04 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 -- 35 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:02 2012 Optimize a model with 2183 rows, 2551 columns and 8551 nonzeros Presolve removed 25 rows and 425 columns Presolve time: 0.01s Presolved: 2158 rows, 2126 columns, 8126 nonzeros Variable types: 0 continuous, 2126 integer (2126 binary) Root relaxation: objective 0.000000e+00, 210 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 (210 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 -- 17 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:02 2012 Optimize a model with 1103 rows, 1264 columns and 4024 nonzeros Presolve removed 25 rows and 200 columns Presolve time: 0.00s Presolved: 1078 rows, 1064 columns, 3824 nonzeros Variable types: 0 continuous, 1064 integer (1064 binary) Root relaxation: objective 0.000000e+00, 211 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 (306 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 -- 8 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:19:02 2012 Optimize a model with 623 rows, 692 columns and 2012 nonzeros Presolve removed 25 rows and 100 columns Presolve time: 0.00s Presolved: 598 rows, 592 columns, 1912 nonzeros Variable types: 0 continuous, 592 integer (592 binary) Root relaxation: objective 0.000000e+00, 188 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 (259 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 16:19:02 2012 Optimize a model with 383 rows, 406 columns and 1006 nonzeros Presolve removed 153 rows and 183 columns Presolve time: 0.00s Presolved: 230 rows, 223 columns, 690 nonzeros Variable types: 0 continuous, 223 integer (223 binary) Root relaxation: objective 0.000000e+00, 117 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 94 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (375 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 16:19:02 2012 Optimize a model with 503 rows, 549 columns and 1509 nonzeros Presolve removed 25 rows and 75 columns Presolve time: 0.00s Presolved: 478 rows, 474 columns, 1434 nonzeros Variable types: 0 continuous, 474 integer (474 binary) Root relaxation: objective 0.000000e+00, 189 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 (249 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