source: CIVL/examples/omp/dataracebench-1.3.2/micro-benchmarks/DRB032-truedepfirstdimension-var-yes.c

/*
Copyright (c) 2017, Lawrence Livermore National Security, LLC.
Produced at the Lawrence Livermore National Laboratory
Written by Chunhua Liao, Pei-Hung Lin, Joshua Asplund,
Markus Schordan, and Ian Karlin
(email: liao6@llnl.gov, lin32@llnl.gov, asplund1@llnl.gov,
schordan1@llnl.gov, karlin1@llnl.gov)
LLNL-CODE-732144
All rights reserved.

This file is part of DataRaceBench. For details, see
https://github.com/LLNL/dataracebench. Please also see the LICENSE file
for our additional BSD notice.

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or without modification, are permitted provided that the following
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  may be used to endorse or promote products derived from this
  software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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*/

/* NOTE by WenhaoWu (wuwenhao@udel.edu)
 * This example is modified so that the bound can be adjusted 
 * by defining 'N' and if it isn't defined then the bound value 
 * in the original example is used as the default value of 'N' 
 * And both 'argc' and 'argv' are assumed by using '$assume', 
 * which is included in <civlc.cvh>.
 */
#ifndef N
#define N 1000
#endif
#ifdef _CIVL
#include <civlc.cvh>
#endif

/* 
The outer loop has a loop-carried true dependence.
Data race pair: b[i][j]@89:7 vs. b[i-1][j-1]@89:15
*/
#include <stdlib.h>
int main(int argc, char* argv[])
{

#ifdef _CIVL
    $assume(argc == 2);
    $assume(atoi(argv[1]) == N);
#endif

  int i,j;
  int len = 1000;
  if (argc>1)
    len = atoi(argv[1]);

  int n=len, m=len;
  double b[len][len];

  for (i=0; i<n; i++)
    for (j=0; j<m; j++)
      b[i][j] = 0.5; 

#pragma omp parallel for private(j)
  for (i=1;i<n;i++)
    for (j=1;j<m;j++)
      b[i][j]=b[i-1][j-1];

  return 0;
}