current bounds on the number of colors: 0 -- 231 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:40:27 2012 Optimize a model with 30361 rows, 26827 columns and 116955 nonzeros Presolve removed 16 rows and 1840 columns Presolve time: 0.15s Presolved: 30345 rows, 24987 columns, 115115 nonzeros Variable types: 0 continuous, 24987 integer (24987 binary) Root relaxation: objective 0.000000e+00, 380 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 (380 simplex iterations) in 0.18 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 16:40:28 2012 Optimize a model with 15165 rows, 13429 columns and 57969 nonzeros Presolve removed 16 rows and 912 columns Presolve time: 0.12s Presolved: 15149 rows, 12517 columns, 57057 nonzeros Variable types: 0 continuous, 12517 integer (12517 binary) Root relaxation: objective 0.000000e+00, 380 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 (380 simplex iterations) in 0.13 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 16:40:28 2012 Optimize a model with 7567 rows, 6730 columns and 28476 nonzeros Presolve removed 16 rows and 448 columns Presolve time: 0.05s Presolved: 7551 rows, 6282 columns, 28028 nonzeros Variable types: 0 continuous, 6282 integer (6282 binary) Root relaxation: objective 0.000000e+00, 387 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 (387 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 16:40:29 2012 Optimize a model with 3899 rows, 3496 columns and 14238 nonzeros Presolve removed 16 rows and 224 columns Presolve time: 0.02s Presolved: 3883 rows, 3272 columns, 14014 nonzeros Variable types: 0 continuous, 3272 integer (3272 binary) Root relaxation: objective 0.000000e+00, 411 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 (411 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 16:40:29 2012 Optimize a model with 2065 rows, 1879 columns and 7119 nonzeros Presolve removed 16 rows and 112 columns Presolve time: 0.01s Presolved: 2049 rows, 1767 columns, 7007 nonzeros Variable types: 0 continuous, 1767 integer (1767 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 (398 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 16:40:29 2012 Optimize a model with 1017 rows, 955 columns and 3051 nonzeros Presolve removed 16 rows and 48 columns Presolve time: 0.00s Presolved: 1001 rows, 907 columns, 3003 nonzeros Variable types: 0 continuous, 907 integer (907 binary) Root relaxation: objective 0.000000e+00, 401 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 (531 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 16:40:29 2012 Optimize a model with 493 rows, 493 columns and 1017 nonzeros Presolve removed 493 rows and 493 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 16:40:29 2012 Optimize a model with 755 rows, 724 columns and 2034 nonzeros Presolve removed 239 rows and 259 columns Presolve time: 0.00s Presolved: 516 rows, 465 columns, 1548 nonzeros Variable types: 0 continuous, 465 integer (465 binary) Root relaxation: objective 0.000000e+00, 232 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 0 194 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (734 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