[regression] added test case for pthread and abort

Signed-off-by: Lucas Cordeiro <[email protected]>

regression/esbmc-unix2/github_1270_1/main.c

@@ -0,0 +1,104 @@
+// This file is part of the SV-Benchmarks collection of verification tasks:
+// https://gitlab.com/sosy-lab/benchmarking/sv-benchmarks
+//
+// SPDX-FileCopyrightText: 2021 F. Schuessele <[email protected]>
+// SPDX-FileCopyrightText: 2021 D. Klumpp <[email protected]>
+//
+// SPDX-License-Identifier: LicenseRef-BSD-3-Clause-Attribution-Vandikas
+
+typedef unsigned long int pthread_t;
+
+union pthread_attr_t
+{
+  char __size[36];
+  long int __align;
+};
+typedef union pthread_attr_t pthread_attr_t;
+
+extern void __assert_fail(const char *__assertion, const char *__file,
+      unsigned int __line, const char *__function)
+     __attribute__ ((__nothrow__ , __leaf__)) __attribute__ ((__noreturn__));
+void reach_error() { __assert_fail("0", "unroll-2.wvr.c", 21, __extension__ __PRETTY_FUNCTION__); }
+extern int pthread_create (pthread_t *__restrict __newthread,
+      const pthread_attr_t *__restrict __attr,
+      void *(*__start_routine) (void *),
+      void *__restrict __arg) __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1, 3)));
+extern int pthread_join (pthread_t __th, void **__thread_return);
+
+typedef unsigned int size_t;
+extern void *malloc (size_t __size) __attribute__ ((__nothrow__ , __leaf__)) __attribute__ ((__malloc__)) ;
+
+extern int  __VERIFIER_nondet_int(void);
+extern unsigned int  __VERIFIER_nondet_uint(void);
+extern void __VERIFIER_atomic_begin(void);
+extern void __VERIFIER_atomic_end(void);
+
+extern void abort(void);
+void assume_abort_if_not(int cond) {
+  if(!cond) {abort();}
+}
+
+int *f;
+int x1, x2, size;
+unsigned int n;
+
+int *create_fresh_int_array(int size);
+
+void* thread1() {
+  unsigned int i = 0;
+  while (i < 2 * n) {
+    assume_abort_if_not(x1 >= 0 && x1 < size);
+    x1 = f[x1];
+    i++;
+  }
+  return 0;
+}
+
+void* thread2() {
+  unsigned int i = 0;
+  while (i < 2 * n) {
+    assume_abort_if_not(x2 >= 0 && x2 < size);
+    x2 = f[x2];
+    i++;
+    assume_abort_if_not(x2 >= 0 && x2 < size);
+    x2 = f[x2];
+    i++;
+  }
+  return 0;
+}
+
+int main() {
+  pthread_t t1, t2;
+
+  // initialize global variables
+  n = __VERIFIER_nondet_uint();
+  size = __VERIFIER_nondet_int();
+  assume_abort_if_not(size > 0);
+  f = create_fresh_int_array(size);
+
+  assume_abort_if_not(n < 4294967296 / 2);
+
+  // main method
+  pthread_create(&t1, 0, thread1, 0);
+  pthread_create(&t2, 0, thread2, 0);
+  pthread_join(t1, 0);
+  pthread_join(t2, 0);
+
+  assume_abort_if_not(x1 != x2);
+  reach_error();
+
+  return 0;
+}
+
+int *create_fresh_int_array(int size) {
+  assume_abort_if_not(size >= 0);
+  assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int)));
+
+  int* arr = (int*)malloc(sizeof(int) * (size_t)size);
+  for (int i = 0; i < size; i++) {
+    arr[i] = __VERIFIER_nondet_int();
+  }
+  return arr;
+}
+
+

regression/esbmc-unix2/github_1270_1/test.desc

@@ -0,0 +1,4 @@
+CORE
+main.c
+ --force-malloc-success --unwind 10 --no-unwinding-assertions --context-bound 2 --memory-leak-check --no-abnormal-memory-leak
+^VERIFICATION SUCCESSFUL$