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-46s.smv.opb
MD5SUMb13621c546657bfaa0a4c37e9d3a4bae
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 79
Number of bits of the biggest number in a constraint 7
Biggest sum of numbers in a constraint 268
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 benchmark0.425934
Number of variables1612
Total number of constraints3653
Number of constraints which are clauses3273
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints380
Minimum length of a constraint1
Maximum length of a constraint13

Trace number 304

Launcher Data

LAUNCH ON wulflinc19 THE 2005-09-18 09:21:09 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=295 boxname=wulflinc19 idbench=295 idsolver=1 numberseed=0
MD5SUM SOLVER: 38f99674050b34630888bf623b924b59  /oldhome/oroussel/solvers/bsolo
MD5SUM BENCH:  b13621c546657bfaa0a4c37e9d3a4bae  /oldhome/oroussel/tmp/wulflinc19/normalized-46s.smv.opb
REAL COMMAND:  bsolo /oldhome/oroussel/tmp/wulflinc19/normalized-46s.smv.opb
IDLAUNCH: 295
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.037
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	: 890.88

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.037
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:        955052 kB
Buffers:         33588 kB
Cached:          18892 kB
SwapCached:        832 kB
Active:          48468 kB
Inactive:         6632 kB
HighTotal:      131008 kB
HighFree:       111328 kB
LowTotal:       903652 kB
LowFree:        843724 kB
SwapTotal:     2097892 kB
SwapFree:      2096460 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5696 kB
Slab:            18844 kB
Committed_AS:    64184 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-18 09:21:19 (client local time) WITH STATUS 20 IN 7.83181 SECONDS
stats: 295 7 7.83181 20

Solver Data

c INFO: OSL Context initialized.
c INFO: No cost function. Find solution and finish.
c Initial problem consists of 1612 variables and 3653 constraints.
c Using non-optimization problem switches.
c	preprocess terminated. Elapsed time: 0.654
c After prepocess the problem consists of 1290 variables and 2779 constraints.
c Restart #1 #Var: 1290 #Dec: 6271 LB: 0 @ 1.247
c Restart #2 #Var: 1290 #Dec: 16318 LB: 0 @ 2.587
c Restart #3 #Var: 1290 #Dec: 23386 LB: 0 @ 3.529
c Restart #4 #Var: 1290 #Dec: 28693 LB: 0 @ 4.43
c Restart #5 #Var: 1253 #Dec: 32921 LB: 0 @ 5.582
c Restart #6 #Var: 1206 #Dec: 36237 LB: 0 @ 6.685
s UNSATISFIABLE
c Exit Code: 20
c Total time: 7.814 s

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/7051/stat): 7051 (bsolo) R 7050 7051 5929 0 -1 0 19 0 0 0 0 0 0 0 23 0 1 0 1840116426 438272 3 4294967295 134512640 134736556 3221224576 3221224576 1073744960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/7051/statm): 107 3 90 68 0 39 0
[pid=7051] vsize: 428
open syscall for file /etc/ld.so.preload
open syscall for file tls/i686/mmx/libosl.so
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open syscall for file libosl.so
open syscall for file /oldhome/oroussel/lib/tls/i686/mmx/libosl.so
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open syscall for file mmx/libstdc++-libc6.2-2.so.3
open syscall for file libstdc++-libc6.2-2.so.3
open syscall for file /oldhome/oroussel/lib/libstdc++-libc6.2-2.so.3
open syscall for file /etc/ld.so.cache
open syscall for file /usr/lib/libstdc++-libc6.2-2.so.3
open syscall for file tls/i686/mmx/libm.so.6
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open syscall for file mmx/libm.so.6
open syscall for file libm.so.6
open syscall for file /oldhome/oroussel/lib/libm.so.6
open syscall for file /lib/tls/libm.so.6
open syscall for file tls/i686/mmx/libpthread.so.0
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open syscall for file libpthread.so.0
open syscall for file /oldhome/oroussel/lib/libpthread.so.0
open syscall for file /lib/tls/libpthread.so.0
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open syscall for file i686/mmx/libc.so.6
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open syscall for file mmx/libc.so.6
open syscall for file libc.so.6
open syscall for file /oldhome/oroussel/lib/libc.so.6
open syscall for file /lib/tls/libc.so.6
open syscall for file tls/i686/mmx/libgcc_s.so.1
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open syscall for file /oldhome/oroussel/tmp/wulflinc19/normalized-46s.smv.opb
One traced child (pid=7051) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 8.96965
CPU time (s): 7.83181
CPU user time (s): 7.2229
CPU system time (s): 0.608907
CPU usage (%): 87.3146
Max. virtual memory (cumulated for all children) (Kb): 0

Verifier Data

ERROR: no interpretation found !