
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:49:05 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7679.41.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/grafo7679.41.lp
Reading time = 0.17 seconds
: 88823 rows, 2114 columns, 268173 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 88823 rows, 2114 columns and 268173 nonzeros
Model fingerprint: 0x9f8f6399
Variable types: 44 continuous, 2070 integer (2070 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 25236 rows and 29 columns
Presolve time: 0.78s
Presolved: 63587 rows, 2085 columns, 192957 nonzeros
Variable types: 0 continuous, 2085 integer (2041 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2085 rows, 65672 columns, 195042 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20069    3.8951541e+01   0.000000e+00   5.175915e+03      5s
   38810    3.9000000e+01   0.000000e+00   0.000000e+00      9s
   38810    3.9000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 3.900000e+01, 38810 iterations, 8.52 seconds (5.74 work units)
Total elapsed time = 17.10s (DegenMoves)

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

     0     0   39.00000    0  333    7.00000   39.00000   457%     -   18s
H    0     0                       8.0000000   39.00000   388%     -   20s
H    0     0                      10.0000000   39.00000   290%     -   28s
     0     0   39.00000    0  667   10.00000   39.00000   290%     -   28s
     0     0   39.00000    0  662   10.00000   39.00000   290%     -   31s
     0     0   39.00000    0  719   10.00000   39.00000   290%     -   50s

Cutting planes:
  Gomory: 4
  Lift-and-project: 44
  Cover: 10
  Clique: 11
  MIR: 130
  StrongCG: 1
  Zero half: 24
  RLT: 45
  BQP: 2

Explored 1 nodes (62652 simplex iterations) in 50.13 seconds (32.27 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 10 8 7 

Time limit reached
Best objective 1.000000000000e+01, best bound 3.900000000000e+01, gap 290.0000%

Wrote result file './lp_solutions/grafo7679.41.sol'

