
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 02:07:40 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3820.42.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/grafo3820.42.lp
Reading time = 0.46 seconds
: 236002 rows, 2137 columns, 709631 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 236002 rows, 2137 columns and 709631 nonzeros
Model fingerprint: 0x21a09841
Variable types: 42 continuous, 2095 integer (2095 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]
Found heuristic solution: objective 3.0000000
Presolve removed 101848 rows and 3 columns
Presolve time: 2.00s
Presolved: 134154 rows, 2134 columns, 404317 nonzeros
Variable types: 0 continuous, 2134 integer (2092 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2121 rows, 136275 columns, 406451 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16355    5.3998509e+01   0.000000e+00   1.702783e+05      5s
   38554    4.4831364e+01   0.000000e+00   3.104681e+04     10s
   60058    4.4799286e+01   0.000000e+00   2.928928e+04     15s
   76001    4.5000000e+01   0.000000e+00   0.000000e+00     18s
   76001    4.5000000e+01   0.000000e+00   0.000000e+00     19s
   76001    4.5000000e+01   0.000000e+00   0.000000e+00     19s

Root relaxation: objective 4.500000e+01, 76001 iterations, 16.31 seconds (9.47 work units)
Total elapsed time = 30.95s (DegenMoves)
Total elapsed time = 35.07s (DegenMoves)

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

     0     0   45.00000    0  439    9.00000   45.00000   400%     -   35s
H    0     0                      11.0000000   45.00000   309%     -   35s
     0     0          -    0        11.00000   45.00000   309%     -   50s

Cutting planes:
  Gomory: 34
  Cover: 40
  Clique: 28
  MIR: 141
  Zero half: 67
  RLT: 81
  BQP: 5

Explored 1 nodes (90586 simplex iterations) in 50.04 seconds (41.31 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 11 9 3 

Time limit reached
Best objective 1.100000000000e+01, best bound 4.500000000000e+01, gap 309.0909%

Wrote result file './lp_solutions/grafo3820.42.sol'

