
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 06:01:11 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3192.41.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/grafo3192.41.lp
Reading time = 0.13 seconds
: 85047 rows, 2084 columns, 256769 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 85047 rows, 2084 columns and 256769 nonzeros
Model fingerprint: 0x3018c59b
Variable types: 42 continuous, 2042 integer (2042 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 25240 rows and 38 columns
Presolve time: 0.54s
Presolved: 59807 rows, 2046 columns, 181511 nonzeros
Variable types: 0 continuous, 2046 integer (2004 binary)
Root relaxation presolved: 2043 rows, 61850 columns, 183557 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   28705    4.1835590e+01   0.000000e+00   3.378612e+03      5s
   35051    4.2000000e+01   0.000000e+00   0.000000e+00      6s
   35051    4.2000000e+01   0.000000e+00   0.000000e+00      6s
   35051    4.2000000e+01   0.000000e+00   0.000000e+00      6s

Root relaxation: objective 4.200000e+01, 35051 iterations, 5.41 seconds (4.29 work units)
Total elapsed time = 10.18s (DegenMoves)

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

     0     0   42.00000    0  367          -   42.00000      -     -   10s
H    0     0                       7.0000000   42.00000   500%     -   11s
     0     0   42.00000    0  619    7.00000   42.00000   500%     -   15s
H    0     0                       8.0000000   42.00000   425%     -   16s
     0     0   42.00000    0  597    8.00000   42.00000   425%     -   16s
     0     0   42.00000    0  491    8.00000   42.00000   425%     -   44s
     0     0   42.00000    0  474    8.00000   42.00000   425%     -   45s
     0     0          -    0         8.00000   42.00000   425%     -   50s

Cutting planes:
  Lift-and-project: 2
  Cover: 34
  Clique: 11
  MIR: 109
  StrongCG: 1
  Inf proof: 2
  Zero half: 62
  RLT: 61
  BQP: 2

Explored 1 nodes (74264 simplex iterations) in 50.07 seconds (47.36 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 7 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.200000000000e+01, gap 425.0000%

Wrote result file './lp_solutions/grafo3192.41.sol'

