GPU_PTX LB+membar.gl+ctrl-p0::p1-xgyg
"Mgl-d-Rg-Wg Rf-c-g Ctrl-d-g-Wg Rf-c-g"

{}

 P0                 | P1                        ;
 ld.cg.s32 r0, [r1] | ld.cg.s32 r0, [r1]        ;
 membar.gl          | and.b32 r2, r0 2147483648 ;
 mov.s32 r2, 1      | setp.eq.b32 p5, r2, 0     ;
 st.cg.s32 [r3], r2 | @p5 bra LC00              ;
                    | mov.s64 r4, 3494          ;
                    | LC00:                     ;
                    | mov.s32 r3, 1             ;
                    | st.cg.s32 [r4], r3        ;

exists (0:r0=1 /\ 1:r0=1)
(device (kernel (cta (warp P0)) (cta (warp P1))))
x:global; y:global
Generated assembler
//START _litmus_P1
	ld.cg.s32 sr01, [sr11] ;
	and.b32 sr21, sr01, 2147483648 ;
	setp.eq.b32 sp51, sr21, 0 ;
	@sp51 bra LC00 ;
	mov.s64 sr41, 3494 ;
LC00:
	mov.s32 sr31, 1 ;
	st.cg.s32 [sr41], sr31 ;
//START _litmus_P0
	ld.cg.s32 sr00, [sr10] ;
	membar.gl ;
	mov.s32 sr20, 1 ;
	st.cg.s32 [sr30], sr20 ;

Binary '/tmp/dir81b75d.tmp/LB+membar.gl+ctrl-p0::p1-xgyg-0.exe' successfully loaded
Specification clusters: 2
Specification: [[(497, 3, 'R4'), (494, 2, 'R10')], [(549, 3, 'R4'), (547, 2, 'R12')]]
Cluster 0: OK
Cluster 1: OK
!!SUCCESS!!
Test LB+membar.gl+ctrl-p0::p1-xgyg Allowed
Histogram (3 states)
42121 :>0:r0=0; 1:r0=0;
6188  :>0:r0=1; 1:r0=0;
1691  :>0:r0=0; 1:r0=1;
No

Witnesses
Positive: 0, Negative: 50000
Condition exists (0:r0=1 /\ 1:r0=1) is NOT validated
Observation LB+membar.gl+ctrl-p0::p1-xgyg Never 0 50000
Time LB+membar.gl+ctrl-p0::p1-xgyg 8.82

  -- device info --
Name:                           GeForce GTX TITAN
Major revision number:          3
Minor revision number:          5
Total global memory:            6442123264
Total shared memory per block:  49152
Number of multiprocessors:      14

Machine: formal
Revision 1383, version 5.01 GPU_PTX experimental backend
Command line: ./litmus -mach GTXTitan.cfg -a 8 -gpu-verf-comp true big_bucket/LB+membar.gl+ctrl-p0::p1-xgyg-0.litmus -s 50000
Parameters
#ifndef SIZE_OF_TEST
#define SIZE_OF_TEST 50000
#endif
#ifndef NUMBER_OF_RUN
#define NUMBER_OF_RUN 1
#endif
/* cc options: -arch=sm_35 */
/* barrier: user */
/* speedcheck: no */
/* gpu_general_bc: true */
/* 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: 14 */
/* gpu_min_ctas: 10 */
/* gpu_max_threads: 512 */
/* gpu_min_threads: 128 */