
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 02:39:45 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7704.42.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/grafo7704.42.lp
Reading time = 0.21 seconds
: 113479 rows, 2157 columns, 342113 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 113479 rows, 2157 columns and 342113 nonzeros
Model fingerprint: 0x8ecd01e2
Variable types: 43 continuous, 2114 integer (2114 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 48906 rows and 55 columns
Presolve time: 1.18s
Presolved: 64573 rows, 2102 columns, 195735 nonzeros
Variable types: 0 continuous, 2102 integer (2059 binary)
Root relaxation presolved: 2101 rows, 66674 columns, 197837 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   18749    4.6937871e+01   0.000000e+00   3.993529e+04      5s
   37923    4.7000000e+01   0.000000e+00   0.000000e+00     10s
   37923    4.7000000e+01   0.000000e+00   0.000000e+00     10s
   37923    4.7000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 4.700000e+01, 37923 iterations, 8.34 seconds (5.09 work units)
Total elapsed time = 17.80s (DegenMoves)
Total elapsed time = 20.48s (DegenMoves)

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

     0     0   47.00000    0  538          -   47.00000      -     -   21s
H    0     0                       5.0000000   47.00000   840%     -   24s
     0     0   47.00000    0  834    5.00000   47.00000   840%     -   37s
H    0     0                       9.0000000   47.00000   422%     -   38s
     0     0   47.00000    0  808    9.00000   47.00000   422%     -   40s
     0     0          -    0         9.00000   47.00000   422%     -   50s

Cutting planes:
  Gomory: 2
  Lift-and-project: 30
  Cover: 6
  Clique: 12
  MIR: 98
  StrongCG: 1
  Zero half: 10
  RLT: 42
  BQP: 3
  PSD: 1

Explored 1 nodes (59846 simplex iterations) in 50.14 seconds (32.73 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 5 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.700000000000e+01, gap 422.2222%

Wrote result file './lp_solutions/grafo7704.42.sol'

