
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 14 06:44:26 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3928.44.log"
Using license file /Users/sara/gurobi.lic
Academic license - for non-commercial use only - expires 2025-05-12

Gurobi Optimizer version 11.0.1 build v11.0.1rc0 (mac64[x86] - Darwin 21.6.0 21G651)
Copyright (c) 2024, Gurobi Optimization, LLC

Read LP format model from file ./lp_problems/grafo3928.44.lp
Reading time = 0.13 seconds
: 70879 rows, 2229 columns, 214380 nonzeros

CPU model: Intel(R) Core(TM) i5-1038NG7 CPU @ 2.00GHz
Thread count: 4 physical cores, 8 logical processors, using up to 8 threads

Optimize a model with 70879 rows, 2229 columns and 214380 nonzeros
Model fingerprint: 0x25c4e5b3
Variable types: 46 continuous, 2183 integer (2183 binary)
Coefficient statistics:
  Matrix range     [5e-01, 5e+01]
  Objective range  [1e+00, 1e+00]
  Bounds range     [1e+00, 1e+00]
  RHS range        [1e+00, 5e+01]
Presolve removed 8278 rows and 0 columns
Presolve time: 0.64s
Presolved: 62601 rows, 2229 columns, 189802 nonzeros
Variable types: 0 continuous, 2229 integer (2183 binary)
Root relaxation presolved: 2202 rows, 64803 columns, 192031 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17408    3.6925591e+01   0.000000e+00   1.155953e+04      5s
   35840    3.6918979e+01   0.000000e+00   4.337162e+00     10s
   36430    3.7000000e+01   0.000000e+00   0.000000e+00     10s
   36430    3.7000000e+01   0.000000e+00   0.000000e+00     10s
   36430    3.7000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 3.700000e+01, 36430 iterations, 9.44 seconds (5.71 work units)
Total elapsed time = 19.42s (DegenMoves)
Total elapsed time = 20.90s (DegenMoves)

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0   37.00000    0  449          -   37.00000      -     -   21s
H    0     0                       6.0000000   37.00000   517%     -   21s
H    0     0                       8.0000000   37.00000   362%     -   22s
H    0     0                       9.0000000   37.00000   311%     -   24s
     0     0   37.00000    0  689    9.00000   37.00000   311%     -   36s
     0     0   37.00000    0  654    9.00000   37.00000   311%     -   38s
     0     0   37.00000    0  688    9.00000   37.00000   311%     -   50s

Cutting planes:
  Gomory: 7
  Lift-and-project: 32
  Cover: 9
  Clique: 11
  MIR: 116
  StrongCG: 1
  Zero half: 10
  RLT: 56
  BQP: 4

Explored 1 nodes (59575 simplex iterations) in 50.11 seconds (29.81 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 9 8 6 

Time limit reached
Best objective 9.000000000000e+00, best bound 3.700000000000e+01, gap 311.1111%

Wrote result file './lp_solutions/grafo3928.44.sol'


Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 06:15:02 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3928.44.log"
Using license file /Users/sara/gurobi.lic
Academic license - for non-commercial use only - expires 2025-05-12

Gurobi Optimizer version 11.0.1 build v11.0.1rc0 (mac64[x86] - Darwin 21.6.0 21G651)
Copyright (c) 2024, Gurobi Optimization, LLC

Read LP format model from file ./lp_problems/grafo3928.44.lp
Reading time = 0.11 seconds
: 70879 rows, 2229 columns, 214380 nonzeros

CPU model: Intel(R) Core(TM) i5-1038NG7 CPU @ 2.00GHz
Thread count: 4 physical cores, 8 logical processors, using up to 8 threads

Optimize a model with 70879 rows, 2229 columns and 214380 nonzeros
Model fingerprint: 0x25c4e5b3
Variable types: 46 continuous, 2183 integer (2183 binary)
Coefficient statistics:
  Matrix range     [5e-01, 5e+01]
  Objective range  [1e+00, 1e+00]
  Bounds range     [1e+00, 1e+00]
  RHS range        [1e+00, 5e+01]
Presolve removed 8278 rows and 0 columns
Presolve time: 0.39s
Presolved: 62601 rows, 2229 columns, 189802 nonzeros
Variable types: 0 continuous, 2229 integer (2183 binary)
Root relaxation presolved: 2202 rows, 64803 columns, 192031 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   26624    3.6920142e+01   0.000000e+00   4.840190e+03      5s
   36430    3.7000000e+01   0.000000e+00   0.000000e+00      7s
   36430    3.7000000e+01   0.000000e+00   0.000000e+00      7s
   36430    3.7000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 3.700000e+01, 36430 iterations, 6.50 seconds (5.71 work units)
Total elapsed time = 14.21s (DegenMoves)
Total elapsed time = 15.25s (DegenMoves)

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0   37.00000    0  449          -   37.00000      -     -   15s
H    0     0                       6.0000000   37.00000   517%     -   15s
H    0     0                       8.0000000   37.00000   362%     -   15s
H    0     0                       9.0000000   37.00000   311%     -   17s
     0     0   37.00000    0  689    9.00000   37.00000   311%     -   25s
     0     0   37.00000    0  654    9.00000   37.00000   311%     -   26s
     0     0   37.00000    0  609    9.00000   37.00000   311%     -   50s

Cutting planes:
  Gomory: 7
  Lift-and-project: 32
  Cover: 9
  Clique: 11
  MIR: 116
  StrongCG: 1
  Zero half: 10
  RLT: 56
  BQP: 4

Explored 1 nodes (76207 simplex iterations) in 50.07 seconds (46.61 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 9 8 6 

Time limit reached
Best objective 9.000000000000e+00, best bound 3.700000000000e+01, gap 311.1111%

Wrote result file './lp_solutions/grafo3928.44.sol'

