
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 05:50:17 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo9927.40.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/grafo9927.40.lp
Reading time = 0.12 seconds
: 76897 rows, 2102 columns, 232435 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 76897 rows, 2102 columns and 232435 nonzeros
Model fingerprint: 0xf7fdac34
Variable types: 45 continuous, 2057 integer (2057 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 16399 rows and 16 columns
Presolve time: 0.48s
Presolved: 60498 rows, 2086 columns, 183609 nonzeros
Variable types: 0 continuous, 2086 integer (2041 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2086 rows, 62584 columns, 185695 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25740    4.1937948e+01   0.000000e+00   2.306939e+04      5s
   50197    4.1928899e+01   0.000000e+00   1.173580e+02     10s
   51524    4.2000000e+01   0.000000e+00   0.000000e+00     10s
   51524    4.2000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 4.200000e+01, 51524 iterations, 9.70 seconds (8.99 work units)
Total elapsed time = 18.36s (DegenMoves)

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

     0     0   42.00000    0  484    9.00000   42.00000   367%     -   19s
     0     0   42.00000    0  773    9.00000   42.00000   367%     -   30s
     0     0   42.00000    0  762    9.00000   42.00000   367%     -   31s
     0     0   42.00000    0  743    9.00000   42.00000   367%     -   50s

Cutting planes:
  Gomory: 2
  Lift-and-project: 2
  Cover: 8
  Clique: 17
  MIR: 146
  Zero half: 55
  RLT: 73
  BQP: 3
  PSD: 1

Explored 1 nodes (85910 simplex iterations) in 50.07 seconds (47.90 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 9 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.200000000000e+01, gap 366.6667%

Wrote result file './lp_solutions/grafo9927.40.sol'

