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-d2q06c.opb
MD5SUM91ef78d459f6272891a68c3f1abe1bde
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 89670
Biggest coefficient in the objective function 36281708852543488
Number of bits for the biggest coefficient in the objective function 56
Sum of the numbers in the objective function -1012211575040220109
Number of bits of the sum of numbers in the objective function 64
Biggest number in a constraint 1246989811751845888
Number of bits of the biggest number in a constraint 61
Biggest sum of numbers in a constraint -1012211575040220109
Number of bits of the biggest sum of numbers64
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark92.5719
Number of variables155010
Total number of constraints2171
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 constraints2171
Minimum length of a constraint30
Maximum length of a constraint3270

Trace number 2585

Launcher Data

LAUNCH ON wulflinc9 THE 2005-09-18 20:13:39 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=2764 boxname=wulflinc9 idbench=420 idsolver=3 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  91ef78d459f6272891a68c3f1abe1bde  /oldhome/oroussel/tmp/wulflinc9/normalized-mps-v2-20-10-d2q06c.opb
REAL COMMAND:  minisat+_script /oldhome/oroussel/tmp/wulflinc9/normalized-mps-v2-20-10-d2q06c.opb
IDLAUNCH: 2764
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.242
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	: 2
cpu MHz		: 451.242
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:        892572 kB
Buffers:         30684 kB
Cached:          84552 kB
SwapCached:       1044 kB
Active:          76248 kB
Inactive:        41712 kB
HighTotal:      131008 kB
HighFree:        42868 kB
LowTotal:       903652 kB
LowFree:        849704 kB
SwapTotal:     2097136 kB
SwapFree:      2095568 kB
Dirty:               4 kB
Writeback:           0 kB
Mapped:           5660 kB
Slab:            18400 kB
Committed_AS:    64168 kB
PageTables:        328 kB
VmallocTotal:   114680 kB
VmallocUsed:      1364 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-09-18 20:15:25 (client local time) WITH STATUS 20 IN 102.864 SECONDS
stats: 2764 7 102.864 20

Solver Data

c Parsing PB file...
c PARSE ERROR! [line 5171] Integer overflow. Use BigNum-version.
c OK -- Running BigNum-version instead...
c Parsing PB file...
c Converting 3668 PB-constraints to clauses...
c   -- Unit propagations: ppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp  -- 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              : 101.209 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/9190/stat): 9190 (minisat+_script) R 9189 9190 30740 0 -1 0 19 0 0 0 0 0 0 0 23 0 1 0 1785820370 712704 3 4294967295 134512640 135087896 3221224512 3221224512 1073744960 0 0 5 0 0 0 0 17 0 0 0
Raw data (/proc/9190/statm): 174 3 169 147 0 27 0
[pid=9190] 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=9191
New process pid=9192
New process pid=9193
execve syscall for /bin/sed executable
One traced child (pid=9192) 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=9193) exited with status: 0
One traced child (pid=9191) exited with status: 0
New process pid=9194
execve syscall for /oldhome/oroussel/solvers/minisat+_64-bit_static executable
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc9/normalized-mps-v2-20-10-d2q06c.opb
One traced child (pid=9194) exited with status: 5
open syscall for file /oldhome/oroussel/solvers/
New process pid=9195
execve syscall for /oldhome/oroussel/solvers/minisat+_bignum_static executable
open syscall for file /dev/null
open syscall for file /oldhome/oroussel/tmp/wulflinc9/normalized-mps-v2-20-10-d2q06c.opb

[startup+10.0032 s]
Raw data (loadavg): 0.83 0.93 0.90 2/57 9195
Raw data (/proc/9190/stat): 9190 (minisat+_script) S 9189 9190 30740 0 -1 0 314 332 0 0 0 1 1 2 21 0 1 0 1785820370 2179072 234 4294967295 134512640 135087896 3221224512 3221223400 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/9190/statm): 532 234 485 147 0 385 0
[pid=9190] vsize: 2128
Raw data (/proc/9195/stat): 9195 (minisat+_bignum) R 9190 9190 30740 0 -1 0 5692 0 0 0 935 29 0 0 25 0 1 0 1785820380 24346624 5146 4294967295 134512640 135167914 3221224448 3221222220 134845940 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/9195/statm): 5944 5146 162 162 0 5782 0
[pid=9195] vsize: 23776
Current children cumulated CPU time (s) 9.68
Current children cumulated vsize (Kb) 25904

[startup+20.005 s]
Raw data (loadavg): 0.85 0.93 0.90 2/57 9195
Raw data (/proc/9190/stat): 9190 (minisat+_script) S 9189 9190 30740 0 -1 0 314 332 0 0 0 1 1 2 21 0 1 0 1785820370 2179072 234 4294967295 134512640 135087896 3221224512 3221223400 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/9190/statm): 532 234 485 147 0 385 0
[pid=9190] vsize: 2128
Raw data (/proc/9195/stat): 9195 (minisat+_bignum) R 9190 9190 30740 0 -1 0 7977 0 0 0 1896 47 0 0 25 0 1 0 1785820380 33185792 7431 4294967295 134512640 135167914 3221224448 3221221184 134581194 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/9195/statm): 8102 7431 162 162 0 7940 0
[pid=9195] vsize: 32408
Current children cumulated CPU time (s) 19.47
Current children cumulated vsize (Kb) 34536

[startup+30.0058 s]
Raw data (loadavg): 0.88 0.93 0.90 1/57 9195
Raw data (/proc/9190/stat): 9190 (minisat+_script) S 9189 9190 30740 0 -1 0 314 332 0 0 0 1 1 2 21 0 1 0 1785820370 2179072 234 4294967295 134512640 135087896 3221224512 3221223400 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/9190/statm): 532 234 485 147 0 385 0
[pid=9190] vsize: 2128
Raw data (/proc/9195/stat): 9195 (minisat+_bignum) T 9190 9190 30740 0 -1 0 10347 0 0 0 2860 64 0 0 25 0 1 0 1785820380 42172416 9801 4294967295 134512640 135167914 3221224448 3221223336 134865821 0 0 5 16386 3222434794 0 0 17 1 0 0
Raw data (/proc/9195/statm): 10296 9801 162 162 0 10134 0
[pid=9195] vsize: 41184
Current children cumulated CPU time (s) 29.28
Current children cumulated vsize (Kb) 43312

[startup+40.0066 s]
Raw data (loadavg): 0.89 0.93 0.90 1/57 9195
Raw data (/proc/9190/stat): 9190 (minisat+_script) S 9189 9190 30740 0 -1 0 314 332 0 0 0 1 1 2 21 0 1 0 1785820370 2179072 234 4294967295 134512640 135087896 3221224512 3221223400 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/9190/statm): 532 234 485 147 0 385 0
[pid=9190] vsize: 2128
Raw data (/proc/9195/stat): 9195 (minisat+_bignum) T 9190 9190 30740 0 -1 0 12703 0 0 0 3825 81 0 0 25 0 1 0 1785820380 51011584 12118 4294967295 134512640 135167914 3221224448 3221223336 134865821 0 0 5 16386 3222434794 0 0 17 1 0 0
Raw data (/proc/9195/statm): 12454 12118 162 162 0 12292 0
[pid=9195] vsize: 49816
Current children cumulated CPU time (s) 39.1
Current children cumulated vsize (Kb) 51944

[startup+50.0073 s]
Raw data (loadavg): 0.91 0.94 0.90 2/57 9195
Raw data (/proc/9190/stat): 9190 (minisat+_script) S 9189 9190 30740 0 -1 0 314 332 0 0 0 1 1 2 21 0 1 0 1785820370 2179072 234 4294967295 134512640 135087896 3221224512 3221223400 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/9190/statm): 532 234 485 147 0 385 0
[pid=9190] vsize: 2128
Raw data (/proc/9195/stat): 9195 (minisat+_bignum) R 9190 9190 30740 0 -1 0 14953 0 0 0 4789 96 0 0 25 0 1 0 1785820380 68997120 14368 4294967295 134512640 135167914 3221224448 3221223104 134843123 0 0 5 16386 0 0 0 17 1 0 0
Raw data (/proc/9195/statm): 16845 14368 162 162 0 16683 0
[pid=9195] vsize: 67380
Current children cumulated CPU time (s) 48.89
Current children cumulated vsize (Kb) 69508

[startup+60.0071 s]
Raw data (loadavg): 0.92 0.94 0.90 2/57 9195
Raw data (/proc/9190/stat): 9190 (minisat+_script) S 9189 9190 30740 0 -1 0 314 332 0 0 0 1 1 2 21 0 1 0 1785820370 2179072 234 4294967295 134512640 135087896 3221224512 3221223400 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/9190/statm): 532 234 485 147 0 385 0
[pid=9190] vsize: 2128
Raw data (/proc/9195/stat): 9195 (minisat+_bignum) R 9190 9190 30740 0 -1 0 17300 0 0 0 5754 111 0 0 25 0 1 0 1785820380 77832192 16715 4294967295 134512640 135167914 3221224448 3221223408 134693563 0 0 5 16386 0 0 0 17 0 0 0
Raw data (/proc/9195/statm): 19002 16715 162 162 0 18840 0
[pid=9195] vsize: 76008
Current children cumulated CPU time (s) 58.69
Current children cumulated vsize (Kb) 78136

[startup+70.0079 s]
Raw data (loadavg): 0.93 0.94 0.90 2/57 9195
Raw data (/proc/9190/stat): 9190 (minisat+_script) S 9189 9190 30740 0 -1 0 314 332 0 0 0 1 1 2 21 0 1 0 1785820370 2179072 234 4294967295 134512640 135087896 3221224512 3221223400 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/9190/statm): 532 234 485 147 0 385 0
[pid=9190] vsize: 2128
Raw data (/proc/9195/stat): 9195 (minisat+_bignum) R 9190 9190 30740 0 -1 0 19577 0 0 0 6719 126 0 0 25 0 1 0 1785820380 86220800 18866 4294967295 134512640 135167914 3221224448 3221222032 134849153 0 0 5 16386 0 0 0 17 0 0 0
Raw data (/proc/9195/statm): 21050 18866 162 162 0 20888 0
[pid=9195] vsize: 84200
Current children cumulated CPU time (s) 68.49
Current children cumulated vsize (Kb) 86328

[startup+80.0087 s]
Raw data (loadavg): 0.94 0.94 0.90 2/57 9195
Raw data (/proc/9190/stat): 9190 (minisat+_script) S 9189 9190 30740 0 -1 0 314 332 0 0 0 1 1 2 21 0 1 0 1785820370 2179072 234 4294967295 134512640 135087896 3221224512 3221223400 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/9190/statm): 532 234 485 147 0 385 0
[pid=9190] vsize: 2128
Raw data (/proc/9195/stat): 9195 (minisat+_bignum) R 9190 9190 30740 0 -1 0 22047 0 0 0 7686 141 0 0 25 0 1 0 1785820380 96292864 21336 4294967295 134512640 135167914 3221224448 3221223360 134572018 0 0 5 16386 0 0 0 17 0 0 0
Raw data (/proc/9195/statm): 23509 21336 162 162 0 23347 0
[pid=9195] vsize: 94036
Current children cumulated CPU time (s) 78.31
Current children cumulated vsize (Kb) 96164

[startup+90.0094 s]
Raw data (loadavg): 0.95 0.94 0.90 2/57 9195
Raw data (/proc/9190/stat): 9190 (minisat+_script) S 9189 9190 30740 0 -1 0 314 332 0 0 0 1 1 2 21 0 1 0 1785820370 2179072 234 4294967295 134512640 135087896 3221224512 3221223400 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/9190/statm): 532 234 485 147 0 385 0
[pid=9190] vsize: 2128
Raw data (/proc/9195/stat): 9195 (minisat+_bignum) R 9190 9190 30740 0 -1 0 25179 0 0 0 8660 155 0 0 25 0 1 0 1785820380 109027328 24468 4294967295 134512640 135167914 3221224448 3221221516 134838012 0 0 5 16386 0 0 0 17 0 0 0
Raw data (/proc/9195/statm): 26618 24468 162 162 0 26456 0
[pid=9195] vsize: 106472
Current children cumulated CPU time (s) 88.19
Current children cumulated vsize (Kb) 108600

[startup+100.01 s]
Raw data (loadavg): 0.96 0.94 0.91 2/57 9195
Raw data (/proc/9190/stat): 9190 (minisat+_script) S 9189 9190 30740 0 -1 0 314 332 0 0 0 1 1 2 21 0 1 0 1785820370 2179072 234 4294967295 134512640 135087896 3221224512 3221223400 1074634510 0 65536 5 65538 3222414538 0 0 17 0 0 0
Raw data (/proc/9190/statm): 532 234 485 147 0 385 0
[pid=9190] vsize: 2128
Raw data (/proc/9195/stat): 9195 (minisat+_bignum) R 9190 9190 30740 0 -1 0 25182 0 0 0 9660 155 0 0 25 0 1 0 1785820380 109031424 24471 4294967295 134512640 135167914 3221224448 3221223288 134596334 0 0 5 16386 0 0 0 17 0 0 0
Raw data (/proc/9195/statm): 26619 24471 162 162 0 26457 0
[pid=9195] vsize: 106476
Current children cumulated CPU time (s) 98.19
Current children cumulated vsize (Kb) 108604
One traced child (pid=9195) exited with status: 20
One traced child (pid=9190) exited with status: 20
All traced children have exited ! Game is over.

Child status: 20
Real time (s): 104.673
CPU time (s): 102.864
CPU user time (s): 101.225
CPU system time (s): 1.63975
CPU usage (%): 98.2724
Max. virtual memory (cumulated for all children) (Kb): 108604

Verifier Data

ERROR: no interpretation found !