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-blast-tlan2.ucl.opb
MD5SUM7100a312d793a62875e04da08d79c5f4
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 641
Number of bits of the biggest number in a constraint 10
Biggest sum of numbers in a constraint 2174
Number of bits of the biggest sum of numbers12
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.391939
Number of variables2221
Total number of constraints3050
Number of constraints which are clauses2330
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints720
Minimum length of a constraint1
Maximum length of a constraint19

Trace number 344

Launcher Data

LAUNCH ON wulflinc7 THE 2005-09-18 09:35:58 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=336 boxname=wulflinc7 idbench=336 idsolver=1 numberseed=0
MD5SUM SOLVER: 38f99674050b34630888bf623b924b59  /oldhome/oroussel/solvers/bsolo
MD5SUM BENCH:  7100a312d793a62875e04da08d79c5f4  /oldhome/oroussel/tmp/wulflinc7/normalized-blast-tlan2.ucl.opb
REAL COMMAND:  bsolo /oldhome/oroussel/tmp/wulflinc7/normalized-blast-tlan2.ucl.opb
IDLAUNCH: 336
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.050
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	: 2
cpu MHz		: 451.050
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:        951460 kB
Buffers:         34080 kB
Cached:          24884 kB
SwapCached:        740 kB
Active:          53724 kB
Inactive:         7852 kB
HighTotal:      131008 kB
HighFree:       104020 kB
LowTotal:       903652 kB
LowFree:        847440 kB
SwapTotal:     2097136 kB
SwapFree:      2095892 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5716 kB
Slab:            16088 kB
Committed_AS:    64168 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-18 09:36:22 (client local time) WITH STATUS 20 IN 20.5649 SECONDS
stats: 336 7 20.5649 20

Solver Data

c INFO: OSL Context initialized.
c INFO: No cost function. Find solution and finish.
c Initial problem consists of 2221 variables and 3050 constraints.
c Using non-optimization problem switches.
c	preprocess terminated. Elapsed time: 0.881
c After prepocess the problem consists of 1860 variables and 2311 constraints.
c Restart #1 #Var: 1860 #Dec: 18170 LB: 0 @ 2.238
c Restart #2 #Var: 1860 #Dec: 49615 LB: 0 @ 4.705
c Restart #3 #Var: 1860 #Dec: 74129 LB: 0 @ 7.368
c Restart #4 #Var: 1860 #Dec: 81472 LB: 0 @ 9.153
c Restart #5 #Var: 1860 #Dec: 83189 LB: 0 @ 10.163
c Restart #6 #Var: 1860 #Dec: 84399 LB: 0 @ 10.853
c Restart #7 #Var: 1860 #Dec: 86158 LB: 0 @ 12.643
c Restart #8 #Var: 1860 #Dec: 87813 LB: 0 @ 17.294
c Restart #9 #Var: 1860 #Dec: 90515 LB: 0 @ 18.439
c Restart #10 #Var: 1860 #Dec: 92624 LB: 0 @ 19.565
s UNSATISFIABLE
c Exit Code: 20
c Total time: 20.544 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/16411/stat): 16411 (bsolo) R 16410 16411 15400 0 -1 0 19 0 0 0 0 0 0 0 23 0 1 0 1782017499 438272 3 4294967295 134512640 134736556 3221224560 3221224560 1073744960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/16411/statm): 107 3 90 68 0 39 0
[pid=16411] vsize: 428
open syscall for file /etc/ld.so.preload
open syscall for file tls/i686/mmx/libosl.so
open syscall for file tls/i686/libosl.so
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open syscall for file i686/libosl.so
open syscall for file mmx/libosl.so
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 tls/i686/mmx/libstdc++-libc6.2-2.so.3
open syscall for file tls/i686/libstdc++-libc6.2-2.so.3
open syscall for file tls/mmx/libstdc++-libc6.2-2.so.3
open syscall for file tls/libstdc++-libc6.2-2.so.3
open syscall for file i686/mmx/libstdc++-libc6.2-2.so.3
open syscall for file i686/libstdc++-libc6.2-2.so.3
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 i686/libm.so.6
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
open syscall for file tls/i686/libpthread.so.0
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open syscall for file tls/libpthread.so.0
open syscall for file i686/mmx/libpthread.so.0
open syscall for file i686/libpthread.so.0
open syscall for file mmx/libpthread.so.0
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
open syscall for file tls/i686/mmx/libc.so.6
open syscall for file tls/i686/libc.so.6
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open syscall for file i686/mmx/libc.so.6
open syscall for file i686/libc.so.6
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 tls/libgcc_s.so.1
open syscall for file i686/mmx/libgcc_s.so.1
open syscall for file i686/libgcc_s.so.1
open syscall for file mmx/libgcc_s.so.1
open syscall for file libgcc_s.so.1
open syscall for file /oldhome/oroussel/lib/libgcc_s.so.1
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open syscall for file /oldhome/oroussel/tmp/wulflinc7/normalized-blast-tlan2.ucl.opb

[startup+10.003 s]
Raw data (loadavg): 0.93 0.97 0.91 1/56 16411
Raw data (/proc/16411/stat): 16411 (bsolo) T 16410 16411 15400 0 -1 0 1770 0 0 0 676 106 0 0 20 0 1 0 1782017499 10346496 1681 4294967295 134512640 134736556 3221224560 3221223452 1077781665 0 0 5 16384 3222434794 0 0 17 1 0 0
Raw data (/proc/16411/statm): 2526 1681 1116 68 0 2458 0
[pid=16411] vsize: 10104
Current children cumulated CPU time (s) 7.82
Current children cumulated vsize (Kb) 10104

[startup+20.0046 s]
Raw data (loadavg): 0.94 0.97 0.91 2/56 16411
Raw data (/proc/16411/stat): 16411 (bsolo) R 16410 16411 15400 0 -1 0 2937 0 0 0 1622 126 0 0 25 0 1 0 1782017499 15220736 2848 4294967295 134512640 134736556 3221224560 3221223104 134540200 0 0 5 16384 0 0 0 17 1 0 0
Raw data (/proc/16411/statm): 3716 2848 1116 68 0 3648 0
[pid=16411] vsize: 14864
Current children cumulated CPU time (s) 17.48
Current children cumulated vsize (Kb) 14864
One traced child (pid=16411) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 23.2521
CPU time (s): 20.5649
CPU user time (s): 19.1991
CPU system time (s): 1.36579
CPU usage (%): 88.443
Max. virtual memory (cumulated for all children) (Kb): 14864

Verifier Data

ERROR: no interpretation found !