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-bnl2.opb
MD5SUM98512bff24b30a4b39304804d2f8a5cb
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 50550
Biggest coefficient in the objective function 322444669747200
Number of bits for the biggest coefficient in the objective function 49
Sum of the numbers in the objective function 11314136774293353
Number of bits of the sum of numbers in the objective function 54
Biggest number in a constraint 322444669747200
Number of bits of the biggest number in a constraint 49
Biggest sum of numbers in a constraint 11314136774293353
Number of bits of the biggest sum of numbers54
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark56.7314
Number of variables104670
Total number of constraints2280
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 constraints2280
Minimum length of a constraint30
Maximum length of a constraint2460

Trace number 2576

Launcher Data

LAUNCH ON wulflinc27 THE 2005-09-18 20:12:08 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=2757 boxname=wulflinc27 idbench=413 idsolver=3 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  98512bff24b30a4b39304804d2f8a5cb  /oldhome/oroussel/tmp/wulflinc27/normalized-mps-v2-20-10-bnl2.opb
REAL COMMAND:  minisat+_script /oldhome/oroussel/tmp/wulflinc27/normalized-mps-v2-20-10-bnl2.opb
IDLAUNCH: 2757
/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:        897036 kB
Buffers:         36120 kB
Cached:          68788 kB
SwapCached:        764 kB
Active:          78232 kB
Inactive:        29316 kB
HighTotal:      131008 kB
HighFree:        59640 kB
LowTotal:       903652 kB
LowFree:        837396 kB
SwapTotal:     2097892 kB
SwapFree:      2096616 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5724 kB
Slab:            24480 kB
Committed_AS:    64132 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-09-18 20:13:11 (client local time) WITH STATUS 20 IN 61.8456 SECONDS
stats: 2757 7 61.8456 20

Solver Data

c Parsing PB file...
c PARSE ERROR! [line 3493] Integer overflow. Use BigNum-version.
c OK -- Running BigNum-version instead...
c Parsing PB file...
c Converting 3551 PB-constraints to clauses...
c   -- Unit propagations: pppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp  -- Detecting intervals from adjacent constraints: #########################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################
c   -- Clauses(.)/Splits(s): s
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              : 60.9397 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/10465/stat): 10465 (minisat+_script) R 10464 10465 28974 0 -1 0 19 0 0 0 0 0 0 0 23 0 1 0 1844023146 712704 3 4294967295 134512640 135087896 3221224512 3221224512 1073744960 0 0 5 0 0 0 0 17 1 0 0
Raw data (/proc/10465/statm): 174 3 169 147 0 27 0
[pid=10465] 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=10466
New process pid=10467
New process pid=10468
execve syscall for /bin/sed executable
One traced child (pid=10467) exited with status: 0
open syscall for file /etc/ld.so.preload
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=10468) exited with status: 0
One traced child (pid=10466) exited with status: 0
New process pid=10469
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-bnl2.opb
One traced child (pid=10469) exited with status: 5
open syscall for file /oldhome/oroussel/solvers/
New process pid=10470
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-bnl2.opb

[startup+10.0037 s]
Raw data (loadavg): 0.92 0.96 0.91 2/57 10470
Raw data (/proc/10465/stat): 10465 (minisat+_script) S 10464 10465 28974 0 -1 0 314 346 0 0 0 0 0 2 21 0 1 0 1844023146 2179072 234 4294967295 134512640 135087896 3221224512 3221223400 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/10465/statm): 532 234 485 147 0 385 0
[pid=10465] vsize: 2128
Raw data (/proc/10470/stat): 10470 (minisat+_bignum) R 10465 10465 28974 0 -1 0 4733 0 0 0 937 26 0 0 25 0 1 0 1844023154 22921216 4544 4294967295 134512640 135167914 3221224448 3221223360 134572018 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/10470/statm): 5596 4544 162 162 0 5434 0
[pid=10470] vsize: 22384
Current children cumulated CPU time (s) 9.65
Current children cumulated vsize (Kb) 24512

[startup+20.0056 s]
Raw data (loadavg): 0.93 0.96 0.91 2/57 10470
Raw data (/proc/10465/stat): 10465 (minisat+_script) S 10464 10465 28974 0 -1 0 314 346 0 0 0 0 0 2 21 0 1 0 1844023146 2179072 234 4294967295 134512640 135087896 3221224512 3221223400 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/10465/statm): 532 234 485 147 0 385 0
[pid=10465] vsize: 2128
Raw data (/proc/10470/stat): 10470 (minisat+_bignum) R 10465 10465 28974 0 -1 0 8148 0 0 0 1898 45 0 0 25 0 1 0 1844023154 35110912 7794 4294967295 134512640 135167914 3221224448 3221223180 134844675 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/10470/statm): 8572 7794 162 162 0 8410 0
[pid=10470] vsize: 34288
Current children cumulated CPU time (s) 19.45
Current children cumulated vsize (Kb) 36416

[startup+30.0064 s]
Raw data (loadavg): 0.94 0.96 0.91 1/57 10470
Raw data (/proc/10465/stat): 10465 (minisat+_script) S 10464 10465 28974 0 -1 0 314 346 0 0 0 0 0 2 21 0 1 0 1844023146 2179072 234 4294967295 134512640 135087896 3221224512 3221223400 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/10465/statm): 532 234 485 147 0 385 0
[pid=10465] vsize: 2128
Raw data (/proc/10470/stat): 10470 (minisat+_bignum) T 10465 10465 28974 0 -1 0 10702 0 0 0 2862 61 0 0 25 0 1 0 1844023154 44912640 10299 4294967295 134512640 135167914 3221224448 3221222556 134934490 0 0 5 16386 3222434794 0 0 17 1 0 0
Raw data (/proc/10470/statm): 10965 10299 162 162 0 10803 0
[pid=10470] vsize: 43860
Current children cumulated CPU time (s) 29.25
Current children cumulated vsize (Kb) 45988

[startup+40.0072 s]
Raw data (loadavg): 0.95 0.96 0.91 2/57 10470
Raw data (/proc/10465/stat): 10465 (minisat+_script) S 10464 10465 28974 0 -1 0 314 346 0 0 0 0 0 2 21 0 1 0 1844023146 2179072 234 4294967295 134512640 135087896 3221224512 3221223400 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/10465/statm): 532 234 485 147 0 385 0
[pid=10465] vsize: 2128
Raw data (/proc/10470/stat): 10470 (minisat+_bignum) R 10465 10465 28974 0 -1 0 14135 0 0 0 3819 82 0 0 25 0 1 0 1844023154 58777600 13732 4294967295 134512640 135167914 3221224448 3221223216 134691226 0 0 5 16386 0 0 0 17 0 0 0
Raw data (/proc/10470/statm): 14350 13732 162 162 0 14188 0
[pid=10470] vsize: 57400
Current children cumulated CPU time (s) 39.03
Current children cumulated vsize (Kb) 59528

[startup+50.008 s]
Raw data (loadavg): 0.95 0.96 0.91 2/57 10470
Raw data (/proc/10465/stat): 10465 (minisat+_script) S 10464 10465 28974 0 -1 0 314 346 0 0 0 0 0 2 21 0 1 0 1844023146 2179072 234 4294967295 134512640 135087896 3221224512 3221223400 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/10465/statm): 532 234 485 147 0 385 0
[pid=10465] vsize: 2128
Raw data (/proc/10470/stat): 10470 (minisat+_bignum) R 10465 10465 28974 0 -1 0 14135 0 0 0 4819 82 0 0 25 0 1 0 1844023154 58777600 13732 4294967295 134512640 135167914 3221224448 3221223296 134594196 0 0 5 16386 0 0 0 17 0 0 0
Raw data (/proc/10470/statm): 14350 13732 162 162 0 14188 0
[pid=10470] vsize: 57400
Current children cumulated CPU time (s) 49.03
Current children cumulated vsize (Kb) 59528

[startup+60.0078 s]
Raw data (loadavg): 0.96 0.96 0.91 2/57 10470
Raw data (/proc/10465/stat): 10465 (minisat+_script) S 10464 10465 28974 0 -1 0 314 346 0 0 0 0 0 2 21 0 1 0 1844023146 2179072 234 4294967295 134512640 135087896 3221224512 3221223400 1074634510 0 65536 5 65538 3222414538 0 0 17 1 0 0
Raw data (/proc/10465/statm): 532 234 485 147 0 385 0
[pid=10465] vsize: 2128
Raw data (/proc/10470/stat): 10470 (minisat+_bignum) R 10465 10465 28974 0 -1 0 14136 0 0 0 5819 82 0 0 25 0 1 0 1844023154 58777600 13733 4294967295 134512640 135167914 3221224448 3221223204 134697187 0 0 5 16386 0 0 0 17 0 0 0
Raw data (/proc/10470/statm): 14350 13733 162 162 0 14188 0
[pid=10470] vsize: 57400
Current children cumulated CPU time (s) 59.03
Current children cumulated vsize (Kb) 59528
One traced child (pid=10470) exited with status: 20
One traced child (pid=10465) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 62.7919
CPU time (s): 61.8456
CPU user time (s): 60.9507
CPU system time (s): 0.894863
CPU usage (%): 98.4929
Max. virtual memory (cumulated for all children) (Kb): 59528

Verifier Data

ERROR: no interpretation found !