current bounds on the number of colors: 0 -- 157 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:57 2012 Optimize a model with 9751 rows, 12369 columns and 41028 nonzeros Presolve removed 38 rows and 2964 columns Presolve time: 0.11s Presolved: 9713 rows, 9405 columns, 38064 nonzeros Variable types: 0 continuous, 9405 integer (9405 binary) Root relaxation: objective 0.000000e+00, 207 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 (207 simplex iterations) in 0.12 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 -- 78 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:57 2012 Optimize a model with 4954 rows, 6246 columns and 20514 nonzeros Presolve removed 38 rows and 1482 columns Presolve time: 0.04s Presolved: 4916 rows, 4764 columns, 19032 nonzeros Variable types: 0 continuous, 4764 integer (4764 binary) Root relaxation: objective 0.000000e+00, 206 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 (206 simplex iterations) in 0.05 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 -- 39 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:57 2012 Optimize a model with 2494 rows, 3106 columns and 9994 nonzeros Presolve removed 38 rows and 722 columns Presolve time: 0.01s Presolved: 2456 rows, 2384 columns, 9272 nonzeros Variable types: 0 continuous, 2384 integer (2384 binary) Root relaxation: objective 0.000000e+00, 206 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 (206 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 -- 19 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:57 2012 Optimize a model with 1264 rows, 1536 columns and 4734 nonzeros Presolve removed 38 rows and 342 columns Presolve time: 0.01s Presolved: 1226 rows, 1194 columns, 4392 nonzeros Variable types: 0 continuous, 1194 integer (1194 binary) Root relaxation: objective 0.000000e+00, 201 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 (201 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 -- 9 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:20:57 2012 Optimize a model with 649 rows, 751 columns and 2104 nonzeros Presolve removed 38 rows and 152 columns Presolve time: 0.00s Presolved: 611 rows, 599 columns, 1952 nonzeros Variable types: 0 continuous, 599 integer (599 binary) Root relaxation: objective 0.000000e+00, 187 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 (187 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 16:20:57 2012 Optimize a model with 403 rows, 437 columns and 1052 nonzeros Presolve removed 165 rows and 207 columns Presolve time: 0.00s Presolved: 238 rows, 230 columns, 714 nonzeros Variable types: 0 continuous, 230 integer (230 binary) Root relaxation: objective 0.000000e+00, 114 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 96 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (377 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 16:20:57 2012 Optimize a model with 526 rows, 594 columns and 1578 nonzeros Presolve removed 38 rows and 114 columns Presolve time: 0.00s Presolved: 488 rows, 480 columns, 1464 nonzeros Variable types: 0 continuous, 480 integer (480 binary) Root relaxation: objective 0.000000e+00, 187 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 (187 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