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).
  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

Namenormalized-opb/web/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 benchmark20.5079
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 34913 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc26 THE 2005-05-28 11:14:16 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=24217 boxname=wulflinc26 idbench=291 idsolver=17 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  59052c182e2f0c4ec9aef432e4002ed0  /oldhome/oroussel/tmp/wulflinc26/normalized-elf.rf10.ucl.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc26/normalized-elf.rf10.ucl.opb
IDLAUNCH: 24217
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.061
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		: 451.061
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	: 901.12

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        703140 kB
Buffers:         32336 kB
Cached:         267208 kB
SwapCached:        744 kB
Active:          26128 kB
Inactive:       275464 kB
HighTotal:      131008 kB
HighFree:        72940 kB
LowTotal:       903652 kB
LowFree:        630200 kB
SwapTotal:     2097892 kB
SwapFree:      2096256 kB
Dirty:              32 kB
Writeback:           0 kB
Mapped:           5088 kB
Slab:            24168 kB
Committed_AS:    63732 kB
PageTables:        320 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-05-28 11:15:05 (client local time) WITH STATUS 20 IN 49.1935 SECONDS
stats: 24217 7 49.1935 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c This solver internally uses Chaff 2004.11.15 Simplified
c running zchaff...
s UNSATISFIABLE
#### END SOLVER DATA ####
#### BEGIN WATCHER DATA ####
Enforcing CPU limit (will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1230 seconds
Enforcing VSIZE limit: 943718400 bytes
Enforcing Stack size limit: 67108864 bytes
Current StackSize limit: 67108864 bytes
Raw data (loadavg): 0.71 0.88 0.88 2/54 797
Raw data (stat): 797 (runsolver) R 796 20687 20686 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 864365622 884736 94 4294967295 134512640 135332820 3221224464 3221219644 135092226 0 2147483391 7 90112 0 0 0 17 1 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 864
[startup+10.0007 s]
Raw data (loadavg): 0.75 0.88 0.88 2/54 797
Raw data (stat): 797 (pb2sat) R 796 20687 20686 0 -1 0 5288 0 0 0 985 13 0 0 25 0 1 0 864365622 17342464 3358 4294967295 134512640 135726644 3221224592 3221221744 134989923 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 4234 3358 300 300 0 3934 0
vsize: 16936
[startup+20.0013 s]
Raw data (loadavg): 0.79 0.89 0.88 2/54 797
Raw data (stat): 797 (pb2sat) R 796 20687 20686 0 -1 0 15847 0 0 0 1957 41 0 0 25 0 1 0 864365622 48177152 10051 4294967295 134512640 135726644 3221224592 3221223088 134743955 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 11762 10051 300 300 0 11462 0
vsize: 47048
[startup+30.0009 s]
Raw data (loadavg): 0.82 0.89 0.89 2/54 797
Raw data (stat): 797 (pb2sat) R 796 20687 20686 0 -1 0 16830 0 0 0 2953 45 0 0 25 0 1 0 864365622 52678656 10935 4294967295 134512640 135726644 3221224592 3221222928 134735629 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 12861 10935 300 300 0 12561 0
vsize: 51444
[startup+40.0016 s]
Raw data (loadavg): 0.85 0.89 0.89 2/54 797
Raw data (stat): 797 (pb2sat) R 796 20687 20686 0 -1 0 17284 0 0 0 3952 46 0 0 25 0 1 0 864365622 54538240 11356 4294967295 134512640 135726644 3221224592 3221222892 134763380 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 13315 11356 300 300 0 13015 0
vsize: 53260
[startup+49.2104 s]
Raw data (loadavg): 0.86 0.89 0.89 1/53 797
Raw data (stat): 797 (pb2sat) R 796 20687 20686 0 -1 0 17284 0 0 0 3952 46 0 0 25 0 1 0 864365622 54538240 11356 4294967295 134512640 135726644 3221224592 3221222892 134763380 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 13315 11356 300 300 0 13015 0
vsize: 0

Child status: 20
Real time (s): 49.2095
CPU time (s): 49.1935
CPU user time (s): 48.6956
CPU system time (s): 0.497924
CPU usage (%): 99.9676
Max. virtual memory (Kb): 53260
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####