Some explanations

A solver is run under the control of another program named runsolver. runsolver is in charge of imposing the CPU time limit and the memory limit to the solver. It also monitors some information about the process. The trace of the execution of a solver is divided in four parts:
  1. LAUNCHER DATA
    These informations are related to the script which will launch the solver. The most important informations are the command line given to the solver, the md5sum of the different files and the dump of the /proc/cpuinfo and /proc/meminfo which provide some useful information on the computer.
  2. SOLVER DATA
    This is the output of the solver (stdout and stderr).
    Note that some very long lines in this section may be truncated by your web browser !
  3. WATCHER DATA
    This is the informations gathered by the runsolver program. It first prints the different limits. There's a first limit on CPU time set to 1200 seconds. After this time has ellapsed, runsolver sends a SIGTERM and 2 seconds later a SIGKILL to the solver. For safety, there's also another limit set to 1230 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (900Mb).
    Every ten seconds, the runsolver process fetches the content of /proc/loadavg, /proc/pid/stat and /proc/pid/statm (see man proc) and prints it as raw data. This is only recorded in case we need to investigate the behaviour of a solver. The memory used by the solver (vsize) is also given every ten seconds.
    When the solver exits, runsolver prints some informations such as status and time. CPU usage is the ratio CPU Time/Real Time.
  4. VERIFIER DATA
    The output of the solver is piped to a verifier program which will search a value line "v " and, if found, will check that the given interpretation satisfies all constraints.

General information on the benchmark

Nameweb/uclid_pb_benchmarks/normalized-elf.rf10.ucl.opb
MD5SUM59052c182e2f0c4ec9aef432e4002ed0
Bench Categoryno optimization function (SAT)
Has Objective FunctionNO
SatisfiableNO
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of terms in the objective function 0
Biggest coefficient in the objective function 0
Number of bits for the biggest coefficient in the objective function 0
Sum of the numbers in the objective function 0
Number of bits of the sum of numbers in the objective function 0
Biggest number in a constraint 67
Number of bits of the biggest number in a constraint 7
Biggest sum of numbers in a constraint 256
Number of bits of the biggest sum of numbers9
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark21.3408
Number of variables55066
Total number of constraints160619
Number of constraints which are clauses156587
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints4032
Minimum length of a constraint1
Maximum length of a constraint13

Trace number 9762

Launcher Data

LAUNCH ON wulflinc31 THE 2005-09-23 15:18:54 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=8518 boxname=wulflinc31 idbench=314 idsolver=8 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  59052c182e2f0c4ec9aef432e4002ed0  /oldhome/oroussel/tmp/wulflinc31/normalized-elf.rf10.ucl.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc31/normalized-elf.rf10.ucl.opb
IDLAUNCH: 8518
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.047
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 888.83

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.047
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips	: 899.07

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        921420 kB
Buffers:         18516 kB
Cached:          75528 kB
SwapCached:          0 kB
Active:          46428 kB
Inactive:        50496 kB
HighTotal:      131008 kB
HighFree:        51576 kB
LowTotal:       903652 kB
LowFree:        869844 kB
SwapTotal:     2097892 kB
SwapFree:      2097892 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           6984 kB
Slab:            10636 kB
Committed_AS:    63664 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-23 15:19:47 (client local time) WITH STATUS 20 IN 52.493 SECONDS
stats: 8518 7 52.493 20

Solver Data

c This solver internally uses Chaff 2004.11.15 Simplified
c running zchaff...
s UNSATISFIABLE

Watcher Data

Enforcing CPU limit (will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1230 seconds
Enforcing Stack size limit: 67108864 bytes
Enforcing memory limit (will send SIGTERM then SIGKILL): 921600 Kb
Enforcing VSIZE limit: 994918400 bytes
Current StackSize limit: 67108864 bytes
Raw data (/proc/7630/stat): 7630 (pb2sat) R 7629 7630 4005 0 -1 0 18 0 0 0 0 0 0 0 23 0 1 0 21170247 1527808 2 4294967295 134512640 135987407 3221224560 3221224560 134512928 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/7630/statm): 373 2 364 364 0 9 0
[pid=7630] vsize: 1492
open syscall for file /oldhome/oroussel/tmp/wulflinc31/normalized-elf.rf10.ucl.opb

[startup+10.0015 s]
Raw data (loadavg): 0.93 0.97 0.99 2/55 7630
Raw data (/proc/7630/stat): 7630 (pb2sat) R 7629 7630 4005 0 -1 0 5487 0 0 0 979 18 0 0 25 0 1 0 21170247 19255296 3554 4294967295 134512640 135987407 3221224560 3221222008 135140469 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7630/statm): 4701 3554 364 364 0 4337 0
[pid=7630] vsize: 18804
Current children cumulated CPU time (s) 9.97
Current children cumulated vsize (Kb) 18804

[startup+20.0024 s]
Raw data (loadavg): 0.94 0.97 0.99 2/55 7630
Raw data (/proc/7630/stat): 7630 (pb2sat) R 7629 7630 4005 0 -1 0 15915 0 0 0 1949 47 0 0 25 0 1 0 21170247 48451584 10111 4294967295 134512640 135987407 3221224560 3221223408 134817687 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7630/statm): 11829 10111 364 364 0 11465 0
[pid=7630] vsize: 47316
Current children cumulated CPU time (s) 19.96
Current children cumulated vsize (Kb) 47316

[startup+30.0023 s]
Raw data (loadavg): 0.95 0.97 0.99 2/55 7630
Raw data (/proc/7630/stat): 7630 (pb2sat) R 7629 7630 4005 0 -1 0 17484 0 0 0 2916 62 0 0 25 0 1 0 21170247 55648256 11581 4294967295 134512640 135987407 3221224560 3221223248 134811729 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7630/statm): 13586 11581 364 364 0 13222 0
[pid=7630] vsize: 54344
Current children cumulated CPU time (s) 29.78
Current children cumulated vsize (Kb) 54344

[startup+40.0033 s]
Raw data (loadavg): 0.96 0.97 0.99 2/55 7630
Raw data (/proc/7630/stat): 7630 (pb2sat) R 7629 7630 4005 0 -1 0 17950 0 0 0 3904 66 0 0 25 0 1 0 21170247 57507840 12014 4294967295 134512640 135987407 3221224560 3221223248 134812010 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7630/statm): 14040 12014 364 364 0 13676 0
[pid=7630] vsize: 56160
Current children cumulated CPU time (s) 39.7
Current children cumulated vsize (Kb) 56160

[startup+50.0042 s]
Raw data (loadavg): 0.96 0.97 0.99 2/55 7630
Raw data (/proc/7630/stat): 7630 (pb2sat) R 7629 7630 4005 0 -1 0 18120 0 0 0 4894 70 0 0 25 0 1 0 21170247 57778176 12184 4294967295 134512640 135987407 3221224560 3221223248 134811839 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/7630/statm): 14106 12184 364 364 0 13742 0
[pid=7630] vsize: 56424
Current children cumulated CPU time (s) 49.64
Current children cumulated vsize (Kb) 56424
One traced child (pid=7630) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 52.8694
CPU time (s): 52.493
CPU user time (s): 51.7491
CPU system time (s): 0.743886
CPU usage (%): 99.2881
Max. virtual memory (cumulated for all children) (Kb): 56424

Verifier Data

ERROR: no interpretation found !