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/ftp.netlib.org/lp/data/normalized-mps-v2-20-10-beaconfd.opb
MD5SUM18a0e58c186b303cfef9a01fc213e1b1
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 2880
Biggest coefficient in the objective function 58518929408000
Number of bits for the biggest coefficient in the objective function 46
Sum of the numbers in the objective function 540181257540309
Number of bits of the sum of numbers in the objective function 49
Biggest number in a constraint 58518929408000
Number of bits of the biggest number in a constraint 46
Biggest sum of numbers in a constraint 540181257540309
Number of bits of the biggest sum of numbers49
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark15.3367
Number of variables7860
Total number of constraints173
Number of constraints which are clauses0
Number of constraints which are cardinality constraints (but not clauses)0
Number of constraints which are nor clauses,nor cardinality constraints173
Minimum length of a constraint30
Maximum length of a constraint4620

Trace number 2571

Launcher Data

LAUNCH ON wulflinc27 THE 2005-09-18 20:10:52 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=2754 boxname=wulflinc27 idbench=410 idsolver=3 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  18a0e58c186b303cfef9a01fc213e1b1  /oldhome/oroussel/tmp/wulflinc27/normalized-mps-v2-20-10-beaconfd.opb
REAL COMMAND:  minisat+_script /oldhome/oroussel/tmp/wulflinc27/normalized-mps-v2-20-10-beaconfd.opb
IDLAUNCH: 2754
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.169
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		: 451.169
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:        907976 kB
Buffers:         36104 kB
Cached:          58128 kB
SwapCached:        764 kB
Active:          69084 kB
Inactive:        27788 kB
HighTotal:      131008 kB
HighFree:        70252 kB
LowTotal:       903652 kB
LowFree:        837724 kB
SwapTotal:     2097892 kB
SwapFree:      2096616 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5724 kB
Slab:            24156 kB
Committed_AS:    64168 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-18 20:11:57 (client local time) WITH STATUS 20 IN 63.8293 SECONDS
stats: 2754 7 63.8293 20

Solver Data

c Parsing PB file...
c PARSE ERROR! [line 266] Integer overflow. Use BigNum-version.
c OK -- Running BigNum-version instead...
c Parsing PB file...
c Converting 231 PB-constraints to clauses...
c   -- Unit propagations: ppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp  -- Detecting intervals from adjacent constraints: ##################################################################################
c   -- Clauses(.)/Splits(s): (none)
c ---[ 222]---> BDD-cost:   85
s UNSATISFIABLE
c _______________________________________________________________________________
c 
c restarts              : 0
c conflicts             : 0              (0 /sec)
c decisions             : 0              (0 /sec)
c propagations          : 0              (0 /sec)
c inspects              : 0              (0 /sec)
c CPU time              : 63.4803 s
c _______________________________________________________________________________

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/10364/stat): 10364 (minisat+_script) R 10363 10364 28974 0 -1 0 19 0 0 0 0 0 0 0 23 0 1 0 1844015565 712704 3 4294967295 134512640 135087896 3221224496 3221224496 1073744960 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/10364/statm): 174 3 169 147 0 27 0
[pid=10364] vsize: 696
open syscall for file /etc/ld.so.preload
open syscall for file tls/i686/mmx/libtermcap.so.2
open syscall for file tls/i686/libtermcap.so.2
open syscall for file tls/mmx/libtermcap.so.2
open syscall for file tls/libtermcap.so.2
open syscall for file i686/mmx/libtermcap.so.2
open syscall for file i686/libtermcap.so.2
open syscall for file mmx/libtermcap.so.2
open syscall for file libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/tls/i686/mmx/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/tls/i686/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/tls/mmx/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/tls/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/i686/mmx/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/i686/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/mmx/libtermcap.so.2
open syscall for file /oldhome/oroussel/lib/libtermcap.so.2
open syscall for file /etc/ld.so.cache
open syscall for file /lib/libtermcap.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 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 /dev/tty
open syscall for file /etc/mtab
open syscall for file /proc/meminfo
open syscall for file /oldhome/oroussel/solvers/minisat+_script
New process pid=10365
New process pid=10366
New process pid=10367
execve syscall for /bin/sed executable
open syscall for file /etc/ld.so.preload
One traced child (pid=10366) exited with status: 0
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/tls/i686/mmx/libc.so.6
open syscall for file /oldhome/oroussel/lib/tls/i686/libc.so.6
open syscall for file /oldhome/oroussel/lib/tls/mmx/libc.so.6
open syscall for file /oldhome/oroussel/lib/tls/libc.so.6
open syscall for file /oldhome/oroussel/lib/i686/mmx/libc.so.6
open syscall for file /oldhome/oroussel/lib/i686/libc.so.6
open syscall for file /oldhome/oroussel/lib/mmx/libc.so.6
open syscall for file /oldhome/oroussel/lib/libc.so.6
open syscall for file /etc/ld.so.cache
open syscall for file /lib/tls/libc.so.6
One traced child (pid=10367) exited with status: 0
One traced child (pid=10365) exited with status: 0
New process pid=10368
execve syscall for /oldhome/oroussel/solvers/minisat+_64-bit_static executable
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc27/normalized-mps-v2-20-10-beaconfd.opb
One traced child (pid=10368) exited with status: 5
open syscall for file /oldhome/oroussel/solvers/
New process pid=10369
execve syscall for /oldhome/oroussel/solvers/minisat+_bignum_static executable
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc27/normalized-mps-v2-20-10-beaconfd.opb

[startup+10.0033 s]
Raw data (loadavg): 0.93 0.97 0.91 2/57 10369
Raw data (/proc/10364/stat): 10364 (minisat+_script) S 10363 10364 28974 0 -1 0 314 392 0 0 0 0 1 1 21 0 1 0 1844015565 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/10364/statm): 532 234 485 147 0 385 0
[pid=10364] vsize: 2128
Raw data (/proc/10369/stat): 10369 (minisat+_bignum) R 10364 10364 28974 0 -1 0 4113 0 3 0 930 22 0 0 25 0 1 0 1844015573 11190272 2630 4294967295 134512640 135167914 3221224448 3221223184 134845933 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/10369/statm): 2732 2630 162 162 0 2570 0
[pid=10369] vsize: 10928
Current children cumulated CPU time (s) 9.54
Current children cumulated vsize (Kb) 13056

[startup+20.0051 s]
Raw data (loadavg): 0.94 0.97 0.91 2/57 10369
Raw data (/proc/10364/stat): 10364 (minisat+_script) S 10363 10364 28974 0 -1 0 314 392 0 0 0 0 1 1 21 0 1 0 1844015565 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/10364/statm): 532 234 485 147 0 385 0
[pid=10364] vsize: 2128
Raw data (/proc/10369/stat): 10369 (minisat+_bignum) R 10364 10364 28974 0 -1 0 5434 0 3 0 1916 28 0 0 25 0 1 0 1844015573 14917632 3547 4294967295 134512640 135167914 3221224448 3221223284 134596337 0 0 5 16386 0 0 0 17 0 0 0
Raw data (/proc/10369/statm): 3642 3547 162 162 0 3480 0
[pid=10369] vsize: 14568
Current children cumulated CPU time (s) 19.46
Current children cumulated vsize (Kb) 16696

[startup+30.0059 s]
Raw data (loadavg): 0.95 0.97 0.91 2/57 10369
Raw data (/proc/10364/stat): 10364 (minisat+_script) S 10363 10364 28974 0 -1 0 314 392 0 0 0 0 1 1 21 0 1 0 1844015565 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/10364/statm): 532 234 485 147 0 385 0
[pid=10364] vsize: 2128
Raw data (/proc/10369/stat): 10369 (minisat+_bignum) R 10364 10364 28974 0 -1 0 5434 0 3 0 2916 29 0 0 25 0 1 0 1844015573 14917632 3547 4294967295 134512640 135167914 3221224448 3221223216 134691221 0 0 5 16386 0 0 0 17 0 0 0
Raw data (/proc/10369/statm): 3642 3547 162 162 0 3480 0
[pid=10369] vsize: 14568
Current children cumulated CPU time (s) 29.47
Current children cumulated vsize (Kb) 16696

[startup+40.0058 s]
Raw data (loadavg): 0.96 0.97 0.91 2/57 10369
Raw data (/proc/10364/stat): 10364 (minisat+_script) S 10363 10364 28974 0 -1 0 314 392 0 0 0 0 1 1 21 0 1 0 1844015565 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/10364/statm): 532 234 485 147 0 385 0
[pid=10364] vsize: 2128
Raw data (/proc/10369/stat): 10369 (minisat+_bignum) R 10364 10364 28974 0 -1 0 5434 0 3 0 3916 29 0 0 25 0 1 0 1844015573 14917632 3547 4294967295 134512640 135167914 3221224448 3221223204 134697054 0 0 5 16386 0 0 0 17 0 0 0
Raw data (/proc/10369/statm): 3642 3547 162 162 0 3480 0
[pid=10369] vsize: 14568
Current children cumulated CPU time (s) 39.47
Current children cumulated vsize (Kb) 16696

[startup+50.0066 s]
Raw data (loadavg): 0.96 0.97 0.91 2/57 10369
Raw data (/proc/10364/stat): 10364 (minisat+_script) S 10363 10364 28974 0 -1 0 314 392 0 0 0 0 1 1 21 0 1 0 1844015565 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/10364/statm): 532 234 485 147 0 385 0
[pid=10364] vsize: 2128
Raw data (/proc/10369/stat): 10369 (minisat+_bignum) R 10364 10364 28974 0 -1 0 5434 0 3 0 4916 29 0 0 25 0 1 0 1844015573 14917632 3547 4294967295 134512640 135167914 3221224448 3221223296 134594165 0 0 5 16386 0 0 0 17 0 0 0
Raw data (/proc/10369/statm): 3642 3547 162 162 0 3480 0
[pid=10369] vsize: 14568
Current children cumulated CPU time (s) 49.47
Current children cumulated vsize (Kb) 16696

[startup+60.0074 s]
Raw data (loadavg): 0.97 0.97 0.91 2/57 10369
Raw data (/proc/10364/stat): 10364 (minisat+_script) S 10363 10364 28974 0 -1 0 314 392 0 0 0 0 1 1 21 0 1 0 1844015565 2179072 234 4294967295 134512640 135087896 3221224496 3221223384 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/10364/statm): 532 234 485 147 0 385 0
[pid=10364] vsize: 2128
Raw data (/proc/10369/stat): 10369 (minisat+_bignum) R 10364 10364 28974 0 -1 0 5434 0 3 0 5917 29 0 0 25 0 1 0 1844015573 14917632 3547 4294967295 134512640 135167914 3221224448 3221223296 134596396 0 0 5 16386 0 0 0 17 0 0 0
Raw data (/proc/10369/statm): 3642 3547 162 162 0 3480 0
[pid=10369] vsize: 14568
Current children cumulated CPU time (s) 59.48
Current children cumulated vsize (Kb) 16696
One traced child (pid=10369) exited with status: 20
One traced child (pid=10364) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 64.3314
CPU time (s): 63.8293
CPU user time (s): 63.5013
CPU system time (s): 0.32795
CPU usage (%): 99.2195
Max. virtual memory (cumulated for all children) (Kb): 16696

Verifier Data

ERROR: no interpretation found !