
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 08:19:42 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7143.43.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/grafo7143.43.lp
Reading time = 0.15 seconds
: 96826 rows, 2341 columns, 292401 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 96826 rows, 2341 columns and 292401 nonzeros
Model fingerprint: 0x6ca2b5d7
Variable types: 47 continuous, 2294 integer (2294 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 2.0000000
Presolve removed 22270 rows and 25 columns
Presolve time: 0.69s
Presolved: 74556 rows, 2316 columns, 226066 nonzeros
Variable types: 0 continuous, 2316 integer (2269 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2316 rows, 76872 columns, 228382 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22811    3.8939002e+01   0.000000e+00   1.412990e+04      5s
   46841    3.8921432e+01   0.000000e+00   7.684842e+03     10s
   70338    3.8915535e+01   0.000000e+00   2.858638e+03     15s
   79252    3.9000000e+01   0.000000e+00   0.000000e+00     17s
   79252    3.9000000e+01   0.000000e+00   0.000000e+00     17s

Root relaxation: objective 3.900000e+01, 79252 iterations, 16.11 seconds (14.54 work units)
Total elapsed time = 26.77s (DegenMoves)

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

     0     0   39.00000    0  446    7.00000   39.00000   457%     -   28s
H    0     0                       9.0000000   39.00000   333%     -   30s
     0     0   39.00000    0  751    9.00000   39.00000   333%     -   39s
     0     0   39.00000    0  726    9.00000   39.00000   333%     -   39s
     0     0  postponed    0         9.00000   39.00000   333%     -   50s

Cutting planes:
  Gomory: 1
  Lift-and-project: 31
  Cover: 3
  Clique: 20
  MIR: 103
  StrongCG: 1
  GUB cover: 1
  Zero half: 66
  RLT: 47
  BQP: 3

Explored 1 nodes (102377 simplex iterations) in 50.07 seconds (44.60 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 9 7 2 

Time limit reached
Best objective 9.000000000000e+00, best bound 3.900000000000e+01, gap 333.3333%

Wrote result file './lp_solutions/grafo7143.43.sol'

