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

Namemps-v2-20-10/MIPLIB/miplib2003/normalized-mps-v2-20-10-arki001.opb
MD5SUMde7a38ae8a44ed9d515fc386211a643d
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
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 31
Biggest coefficient in the objective function 1073741824
Number of bits for the biggest coefficient in the objective function 31
Sum of the numbers in the objective function 2147483647
Number of bits of the sum of numbers in the objective function 31
Biggest number in a constraint 2386602666496000
Number of bits of the biggest number in a constraint 52
Biggest sum of numbers in a constraint 5223634990318712
Number of bits of the biggest sum of numbers53
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark72.492
Number of variables8268
Total number of constraints2018
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)436
Number of constraints which are nor clauses,nor cardinality constraints1582
Minimum length of a constraint1
Maximum length of a constraint8249

Trace number 4171

Launcher Data

LAUNCH ON wulflinc21 THE 2005-09-19 05:32:04 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=6419 boxname=wulflinc21 idbench=559 idsolver=6 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  de7a38ae8a44ed9d515fc386211a643d  /oldhome/oroussel/tmp/wulflinc21/normalized-mps-v2-20-10-arki001.opb
REAL COMMAND:  java -server -Xms650M -Xmx650M -jar /oldhome/oroussel/solvers/sat4jPseudoTer.jar /oldhome/oroussel/tmp/wulflinc21/normalized-mps-v2-20-10-arki001.opb
IDLAUNCH: 6419
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.161
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		: 451.161
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:        896060 kB
Buffers:         31888 kB
Cached:          79092 kB
SwapCached:        812 kB
Active:          69396 kB
Inactive:        44200 kB
HighTotal:      131008 kB
HighFree:        49420 kB
LowTotal:       903652 kB
LowFree:        846640 kB
SwapTotal:     2097892 kB
SwapFree:      2096476 kB
Dirty:              64 kB
Writeback:           0 kB
Mapped:           5804 kB
Slab:            19232 kB
Committed_AS:    64332 kB
PageTables:        340 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-19 05:33:20 (client local time) WITH STATUS 20 IN 72.492 SECONDS
stats: 6419 7 72.492 20

Solver Data

c SAT4J: a SATisfiability library for Java (c) 2004-2005 Daniel Le Berre
c This is free software under the GNU LGPL licence. See www.sat4j.org for details.
c version JAVA5.1.1.31
c --- Begin Solver configuration ---
c org.sat4j.minisat.uip.FirstUIP@a20892
c org.sat4j.minisat.constraints.PBMinDataStructure@1e0bc08
c org.sat4j.minisat.learning.MiniSATLearning@158b649
c conflictBoundIncFactor=1.5 learntBoundIncFactor=1.1 initLearntBoundConstraintFactor=0.5 initConflictBound=100 
c VSIDS like heuristics from MiniSAT using a sorted array
c No reason simplification
c --- End Solver configuration ---
c solving /oldhome/oroussel/tmp/wulflinc21/normalized-mps-v2-20-10-arki001.opb
c reading problem ... done. Time 9.273 ms.
c #vars     8268
c #constraints  1471
c starts		: 1
c conflicts		: 5
c decisions		: 1225
c propagations		: 2766
c inspects		: 1429
c learnt literals	: 0
c learnt binary clauses	: 0
c learnt ternary clauses	: 0
c learnt clauses	: 4
c root simplifications	: 3
c removed literals (reason simplification)	: 0
c reason swapping (by a shorter reason)	: 0
c Calls to reduceDB	: 0
c speed (decisions/second)	: 18.9086980010805
c non guided choices	871
c random choices	0
s UNSATISFIABLE
c Total CPU time (ms) : 74.099

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/2907/stat): 2907 (java) R 2906 2907 20602 0 -1 0 19 0 0 0 0 0 0 0 23 0 1 0 1724668646 159744 3 4294967295 134512640 134569956 3221224464 3221224464 1073744960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/2907/statm): 39 3 38 16 0 23 0
[pid=2907] vsize: 156
open syscall for file /etc/ld.so.preload
open syscall for file tls/i686/mmx/libpthread.so.0
open syscall for file tls/i686/libpthread.so.0
open syscall for file tls/mmx/libpthread.so.0
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/tls/i686/mmx/libpthread.so.0
open syscall for file /oldhome/oroussel/lib/tls/i686/libpthread.so.0
open syscall for file /oldhome/oroussel/lib/tls/mmx/libpthread.so.0
open syscall for file /oldhome/oroussel/lib/tls/libpthread.so.0
open syscall for file /oldhome/oroussel/lib/i686/mmx/libpthread.so.0
open syscall for file /oldhome/oroussel/lib/i686/libpthread.so.0
open syscall for file /oldhome/oroussel/lib/mmx/libpthread.so.0
open syscall for file /oldhome/oroussel/lib/libpthread.so.0
open syscall for file /etc/ld.so.cache
open syscall for file /lib/tls/libpthread.so.0
open syscall for file tls/i686/mmx/libdl.so.2
open syscall for file tls/i686/libdl.so.2
open syscall for file tls/mmx/libdl.so.2
open syscall for file tls/libdl.so.2
open syscall for file i686/mmx/libdl.so.2
open syscall for file i686/libdl.so.2
open syscall for file mmx/libdl.so.2
open syscall for file libdl.so.2
open syscall for file /oldhome/oroussel/lib/libdl.so.2
open syscall for file /lib/libdl.so.2
open syscall for file tls/i686/mmx/libc.so.6
open syscall for file tls/i686/libc.so.6
open syscall for file tls/mmx/libc.so.6
open syscall for file tls/libc.so.6
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 /oldhome/oroussel/solvers/sat4jPseudoTer.jar
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/i386/jvm.cfg
execve syscall for /oldhome/oroussel/jre1.5.0_05/bin/java executable
open syscall for file /etc/ld.so.preload
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/i386/server/tls/i686/mmx/libpthread.so.0
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/i386/server/tls/i686/libpthread.so.0
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/i386/server/tls/mmx/libpthread.so.0
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/i386/server/tls/libpthread.so.0
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/i386/server/i686/mmx/libpthread.so.0
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/i386/server/i686/libpthread.so.0
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/i386/server/mmx/libpthread.so.0
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/i386/server/libpthread.so.0
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/i386/tls/i686/mmx/libpthread.so.0
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/i386/tls/i686/libpthread.so.0
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/i386/tls/mmx/libpthread.so.0
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/i386/tls/libpthread.so.0
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/i386/i686/mmx/libpthread.so.0
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/i386/i686/libpthread.so.0
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/i386/mmx/libpthread.so.0
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/i386/libpthread.so.0
open syscall for file /oldhome/oroussel/jre1.5.0_05/../lib/i386/tls/i686/mmx/libpthread.so.0
open syscall for file /oldhome/oroussel/jre1.5.0_05/../lib/i386/tls/i686/libpthread.so.0
open syscall for file /oldhome/oroussel/jre1.5.0_05/../lib/i386/tls/mmx/libpthread.so.0
open syscall for file /oldhome/oroussel/jre1.5.0_05/../lib/i386/tls/libpthread.so.0
open syscall for file /oldhome/oroussel/jre1.5.0_05/../lib/i386/i686/mmx/libpthread.so.0
open syscall for file /oldhome/oroussel/jre1.5.0_05/../lib/i386/i686/libpthread.so.0
open syscall for file /oldhome/oroussel/jre1.5.0_05/../lib/i386/mmx/libpthread.so.0
open syscall for file /oldhome/oroussel/jre1.5.0_05/../lib/i386/libpthread.so.0
open syscall for file tls/i686/mmx/libpthread.so.0
open syscall for file tls/i686/libpthread.so.0
open syscall for file tls/mmx/libpthread.so.0
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/tls/i686/mmx/libpthread.so.0
open syscall for file /oldhome/oroussel/lib/tls/i686/libpthread.so.0
open syscall for file /oldhome/oroussel/lib/tls/mmx/libpthread.so.0
open syscall for file /oldhome/oroussel/lib/tls/libpthread.so.0
open syscall for file /oldhome/oroussel/lib/i686/mmx/libpthread.so.0
open syscall for file /oldhome/oroussel/lib/i686/libpthread.so.0
open syscall for file /oldhome/oroussel/lib/mmx/libpthread.so.0
open syscall for file /oldhome/oroussel/lib/libpthread.so.0
open syscall for file /etc/ld.so.cache
open syscall for file /lib/tls/libpthread.so.0
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/i386/server/libdl.so.2
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/i386/libdl.so.2
open syscall for file tls/i686/mmx/libdl.so.2
open syscall for file tls/i686/libdl.so.2
open syscall for file tls/mmx/libdl.so.2
open syscall for file tls/libdl.so.2
open syscall for file i686/mmx/libdl.so.2
open syscall for file i686/libdl.so.2
open syscall for file mmx/libdl.so.2
open syscall for file libdl.so.2
open syscall for file /oldhome/oroussel/lib/libdl.so.2
open syscall for file /lib/libdl.so.2
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/i386/server/libc.so.6
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/i386/libc.so.6
open syscall for file tls/i686/mmx/libc.so.6
open syscall for file tls/i686/libc.so.6
open syscall for file tls/mmx/libc.so.6
open syscall for file tls/libc.so.6
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 /oldhome/oroussel/solvers/sat4jPseudoTer.jar
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/i386/jvm.cfg
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/i386/server/libjvm.so
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/i386/server/libm.so.6
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/i386/libm.so.6
open syscall for file tls/i686/mmx/libm.so.6
open syscall for file tls/i686/libm.so.6
open syscall for file tls/mmx/libm.so.6
open syscall for file tls/libm.so.6
open syscall for file i686/mmx/libm.so.6
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 /etc/ld.so.cache
open syscall for file /lib/tls/libm.so.6
open syscall for file /etc/mtab
open syscall for file /proc/stat
open syscall for file /etc/mtab
open syscall for file /proc/meminfo
open syscall for file .hotspotrc
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/endorsed
open syscall for file /etc/mtab
open syscall for file /proc/stat
open syscall for file /proc/self/maps
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/i386/native_threads/libhpi.so
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/i386/server/libnsl.so.1
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/i386/libnsl.so.1
open syscall for file tls/i686/mmx/libnsl.so.1
open syscall for file tls/i686/libnsl.so.1
open syscall for file tls/mmx/libnsl.so.1
open syscall for file tls/libnsl.so.1
open syscall for file i686/mmx/libnsl.so.1
open syscall for file i686/libnsl.so.1
open syscall for file mmx/libnsl.so.1
open syscall for file libnsl.so.1
open syscall for file /oldhome/oroussel/lib/libnsl.so.1
open syscall for file /etc/ld.so.cache
open syscall for file /lib/libnsl.so.1
socket syscall socket(PF_UNIX,SOCK_STREAM,0)=4
socket syscall connect(4,{sa_family=AF_UNIX,path=/var/run/.nscd_socket},110)
open syscall for file /tmp/hsperfdata_oroussel
open syscall for file /tmp/hsperfdata_oroussel/2907
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/i386/libverify.so
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/i386/libjava.so
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/i386/libzip.so
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/rt.jar
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/jsse.jar
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/jce.jar
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/charsets.jar
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/i386/server/classes.jsa
open syscall for file .hotspot_compiler
New thread pid=2908
New thread pid=2909
New thread pid=2910
socket syscall socket(PF_UNIX,SOCK_STREAM,0)=4
socket syscall connect(4,{sa_family=AF_UNIX,path=/var/run/.nscd_socket},110)
open syscall for file /etc/localtime
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/ext
New thread pid=2911
New thread pid=2912
New thread pid=2913
New thread pid=2914
New thread pid=2915
New thread pid=2916
open syscall for file /oldhome/oroussel/solvers/sat4jPseudoTer.jar
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/ext/sunjce_provider.jar
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/ext/sunpkcs11.jar
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/ext/dnsns.jar
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/ext/localedata.jar
open syscall for file /oldhome/oroussel/jre1.5.0_05/lib/security/java.security
open syscall for file /dev/random
open syscall for file /dev/urandom
open syscall for file /oldhome/oroussel/tmp/wulflinc21/normalized-mps-v2-20-10-arki001.opb

[startup+10.0024 s]
Raw data (loadavg): 1.09 1.02 1.01 2/66 2916
Raw data (/proc/2907/stat): 2907 (java) R 2906 2907 20602 0 -1 0 18113 0 1 0 658 50 0 0 18 0 10 0 1724668646 867139584 24217 4294967295 134512640 134569956 3221224336 3221214696 1131326895 0 4 1 23758 0 0 0 17 0 0 0
Raw data (/proc/2907/statm): 211704 24217 13129 16 0 211688 0
[pid=2907] vsize: 846816
Current children cumulated CPU time (s) 7.08
Current children cumulated vsize (Kb) 846816
New thread pid=2917

[startup+20.0031 s]
Raw data (loadavg): 1.08 1.02 1.00 2/67 2917
Raw data (/proc/2907/stat): 2907 (java) R 2906 2907 20602 0 -1 0 18162 0 1 0 1578 51 0 0 25 0 11 0 1724668646 865931264 26335 4294967295 134512640 134569956 3221224336 3221214648 1131404044 0 4 1 23758 0 0 0 17 1 0 0
Raw data (/proc/2907/statm): 211409 26335 13129 16 0 211393 0
[pid=2907] vsize: 845636
Current children cumulated CPU time (s) 16.29
Current children cumulated vsize (Kb) 845636

[startup+30.0028 s]
Raw data (loadavg): 1.07 1.01 1.00 2/67 2917
Raw data (/proc/2907/stat): 2907 (java) R 2906 2907 20602 0 -1 0 18168 0 1 0 2534 52 0 0 25 0 11 0 1724668646 863170560 25681 4294967295 134512640 134569956 3221224336 3221214668 1131057236 0 4 1 23758 0 0 0 17 0 0 0
Raw data (/proc/2907/statm): 210735 25681 13129 16 0 210719 0
[pid=2907] vsize: 842940
Current children cumulated CPU time (s) 25.86
Current children cumulated vsize (Kb) 842940

[startup+40.0034 s]
Raw data (loadavg): 1.06 1.01 1.00 2/67 2917
Raw data (/proc/2907/stat): 2907 (java) R 2906 2907 20602 0 -1 0 18176 0 1 0 3483 52 0 0 25 0 11 0 1724668646 863170560 25683 4294967295 134512640 134569956 3221224336 3221214648 1131499178 0 4 1 23758 0 0 0 17 1 0 0
Raw data (/proc/2907/statm): 210735 25683 13129 16 0 210719 0
[pid=2907] vsize: 842940
Current children cumulated CPU time (s) 35.35
Current children cumulated vsize (Kb) 842940

[startup+50.0042 s]
Raw data (loadavg): 1.13 1.03 1.01 2/67 2917
Raw data (/proc/2907/stat): 2907 (java) R 2906 2907 20602 0 -1 0 18184 0 1 0 4412 52 0 0 16 0 11 0 1724668646 864219136 26839 4294967295 134512640 134569956 3221224336 3221214528 1131499615 0 4 1 23758 0 0 0 17 0 0 0
Raw data (/proc/2907/statm): 210991 26839 13129 16 0 210975 0
[pid=2907] vsize: 843964
Current children cumulated CPU time (s) 44.64
Current children cumulated vsize (Kb) 843964

[startup+60.0048 s]
Raw data (loadavg): 1.11 1.03 1.01 2/67 2917
Raw data (/proc/2907/stat): 2907 (java) R 2906 2907 20602 0 -1 0 18193 0 1 0 5368 53 0 0 25 0 11 0 1724668646 864219136 26647 4294967295 134512640 134569956 3221224336 3221214672 1131363993 0 4 1 23758 0 0 0 17 1 0 0
Raw data (/proc/2907/statm): 210991 26647 13129 16 0 210975 0
[pid=2907] vsize: 843964
Current children cumulated CPU time (s) 54.21
Current children cumulated vsize (Kb) 843964

[startup+70.0055 s]
Raw data (loadavg): 1.09 1.03 1.00 2/67 2917
Raw data (/proc/2907/stat): 2907 (java) R 2906 2907 20602 0 -1 0 18201 0 1 0 6318 53 0 0 25 0 11 0 1724668646 864219136 26658 4294967295 134512640 134569956 3221224336 3221214744 1131548771 0 4 1 23758 0 0 0 17 1 0 0
Raw data (/proc/2907/statm): 210991 26658 13129 16 0 210975 0
[pid=2907] vsize: 843964
Current children cumulated CPU time (s) 63.71
Current children cumulated vsize (Kb) 843964
New thread pid=2918
One traced child (pid=2917) exited with status: 0
One traced child (pid=2918) exited with status: 0
One traced child (pid=2916) exited with status: 0
One traced child (pid=2908) exited with status: 20
One traced child (pid=2915) exited with status: 20
One traced child (pid=2909) exited with status: 20
One traced child (pid=2910) exited with status: 20
One traced child (pid=2912) exited with status: 20
One traced child (pid=2913) exited with status: 20
One traced child (pid=2914) exited with status: 20
One traced child (pid=2911) exited with status: 20
One traced child (pid=2907) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 75.478
CPU time (s): 72.492
CPU user time (s): 71.8121
CPU system time (s): 0.679896
CPU usage (%): 96.0439
Max. virtual memory (cumulated for all children) (Kb): 846816

Verifier Data

ERROR: no interpretation found !