current bounds on the number of colors: 0 -- 245 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:15 2012 Optimize a model with 40017 rows, 30216 columns and 149206 nonzeros Presolve removed 14 rows and 1708 columns Presolve time: 0.20s Presolved: 40003 rows, 28508 columns, 147498 nonzeros Variable types: 0 continuous, 28508 integer (28508 binary) Root relaxation: objective 0.000000e+00, 455 iterations, 0.02 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 (455 simplex iterations) in 0.23 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 -- 122 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:15 2012 Optimize a model with 20131 rows, 15271 columns and 74603 nonzeros Presolve removed 14 rows and 854 columns Presolve time: 0.13s Presolved: 20117 rows, 14417 columns, 73749 nonzeros Variable types: 0 continuous, 14417 integer (14417 binary) Root relaxation: objective 0.000000e+00, 457 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 (457 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 -- 61 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:16 2012 Optimize a model with 10025 rows, 7676 columns and 36690 nonzeros Presolve removed 14 rows and 420 columns Presolve time: 0.06s Presolved: 10011 rows, 7256 columns, 36270 nonzeros Variable types: 0 continuous, 7256 integer (7256 binary) Root relaxation: objective 0.000000e+00, 450 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 (450 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 -- 30 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:16 2012 Optimize a model with 5135 rows, 4001 columns and 18345 nonzeros Presolve removed 14 rows and 210 columns Presolve time: 0.02s Presolved: 5121 rows, 3791 columns, 18135 nonzeros Variable types: 0 continuous, 3791 integer (3791 binary) Root relaxation: objective 0.000000e+00, 481 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 (783 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:16 2012 Optimize a model with 2527 rows, 2041 columns and 8561 nonzeros Presolve removed 14 rows and 98 columns Presolve time: 0.01s Presolved: 2513 rows, 1943 columns, 8463 nonzeros Variable types: 0 continuous, 1943 integer (1943 binary) Root relaxation: objective 0.000000e+00, 483 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 (713 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:16 2012 Optimize a model with 1223 rows, 1061 columns and 3669 nonzeros Presolve removed 14 rows and 42 columns Presolve time: 0.00s Presolved: 1209 rows, 1019 columns, 3627 nonzeros Variable types: 0 continuous, 1019 integer (1019 binary) Root relaxation: objective 0.000000e+00, 493 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 (763 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 16:46:16 2012 Optimize a model with 571 rows, 571 columns and 1223 nonzeros Presolve removed 571 rows and 571 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 16:46:16 2012 Optimize a model with 897 rows, 816 columns and 2446 nonzeros Presolve removed 247 rows and 262 columns Presolve time: 0.00s Presolved: 650 rows, 554 columns, 1950 nonzeros Variable types: 0 continuous, 554 integer (554 binary) Root relaxation: objective 0.000000e+00, 258 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 0 226 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (865 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