GPU_PTX sl_future-p0::p1-xgyg

{y=1;}

 P0                 | P1                          ;
 ld.cg.u32 r0, [r1] | atom.cas.b32 r0, [r1], 0, 1 ;
 mov.u32 r2, 0      | mov.u32 r2, 1               ;
 st.cg.u32 [r3], r2 | setp.eq.u32 r4, r0, 0       ;
 membar.gl          | @r4 mov.u32 r5, 1           ;
                    | @r4 st.cg.u32 [r3], r2      ;

exists (0:r0=1 /\ 1:r0=0)
(device (kernel (cta (warp P0)) (cta (warp P1))))
y:global; x:global
Generated assembler
//START _litmus_P1
	atom.cas.b32 sr01, [sr11], 0, 1 ;
	mov.u32 sr21, 1 ;
	setp.eq.u32 sr41, sr01, 0 ;
	@sr41 mov.u32 sr51, 1 ;
	@sr41 st.cg.u32 [sr31], sr21 ;
//START _litmus_P0
	ld.cg.u32 sr00, [sr10] ;
	mov.u32 sr20, 0 ;
	st.cg.u32 [sr30], sr20 ;
	membar.gl ;

Binary '/tmp/dire776fe.tmp/sl-future.exe' successfully loaded
Specification clusters: 2
Specification: [[(502, 6, 'R4'), (506, 2, 'R12')], [(549, 3, 'R4'), (553, 2, 'R12')]]
Cluster 0: OK
Cluster 1: OK
!!SUCCESS!!
Test sl-future Allowed
Histogram (3 states)
59043 :>0:r0=0; 1:r0=0;
41    *>0:r0=1; 1:r0=0;
40916 :>0:r0=0; 1:r0=1;
Ok

Witnesses
Positive: 41, Negative: 99959
Condition exists (0:r0=1 /\ 1:r0=0) is validated
Observation sl-future Sometimes 41 99959
Time sl-future 7.02

  -- device info --
Name:                           GeForce GTX 660
Major revision number:          3
Minor revision number:          0
Total global memory:            2147155968
Total shared memory per block:  49152
Number of multiprocessors:      5

Machine: csu8975
Revision 1398M, version 5.01 GPU_PTX experimental backend
Command line: ./litmus -mach GTX660.cfg -gpu-verf-comp true ASPLOS/sl-future.litmus -gpu-general-bc false
Parameters
#ifndef SIZE_OF_TEST
#define SIZE_OF_TEST 100000
#endif
#ifndef NUMBER_OF_RUN
#define NUMBER_OF_RUN 1
#endif
/* cc options: -arch=sm_30 */
/* barrier: user */
/* speedcheck: no */
/* gpu_general_bc: false */
/* gpu_mem_stress: true */
/* gpu-rand-threads: true */
/* gpu_cuda: true */
/* gpu_gen_addr: true */
/* gpu_cvt_global_to_gen: true */
/* gpu_cvt_shared_to_gen: true */
/* gpu_max_ctas: 5 */
/* gpu_min_ctas: 4 */
/* gpu_max_threads: 256 */
/* gpu_min_threads: 128 */