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).
  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

Namenormalized-opb/mps-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 benchmark1.42378
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 34149 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc20 THE 2005-05-27 19:59:03 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=10668 boxname=wulflinc20 idbench=821 idsolver=8 numberseed=0
MD5SUM SOLVER: 4b637b3b6117f2add1a6288e91336322  /oldhome/oroussel/solvers/vallstSAT2005PB.sh
MD5SUM BENCH:  91ef78d459f6272891a68c3f1abe1bde  /oldhome/oroussel/tmp/wulflinc20/normalized-mps-v2-20-10-d2q06c.opb
REAL COMMAND:  vallstSAT2005PB.sh /oldhome/oroussel/tmp/wulflinc20/normalized-mps-v2-20-10-d2q06c.opb 0
IDLAUNCH: 10668
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.215
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		: 451.215
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	: 901.12

/proc/meminfo:
MemTotal:      1034660 kB
MemFree:        278476 kB
Buffers:         22144 kB
Cached:         704112 kB
SwapCached:        664 kB
Active:          46956 kB
Inactive:       681432 kB
HighTotal:      131008 kB
HighFree:          280 kB
LowTotal:       903652 kB
LowFree:        278196 kB
SwapTotal:     2097892 kB
SwapFree:      2096304 kB
Dirty:              40 kB
Writeback:           0 kB
Mapped:           5080 kB
Slab:            22132 kB
Committed_AS:    63600 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-05-27 19:59:48 (client local time) WITH STATUS 20 IN 43.1754 SECONDS
stats: 10668 7 43.1754 20
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
1:
result: proof of false found (0)
times:
0m0.016s 0m0.008s
0m42.809s 0m0.286s
s UNSATISFIABLE
#### END SOLVER DATA ####
#### BEGIN WATCHER DATA ####
Enforcing CPU limit (will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime (will send SIGXCPU) limit: 1230 seconds
Enforcing VSIZE limit: 943718400 bytes
Enforcing Stack size limit: 67108864 bytes
Current StackSize limit: 67108864 bytes
Raw data (loadavg): 0.78 0.91 0.97 2/54 4783
Raw data (stat): 4783 (runsolver) R 4782 25399 25398 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 858866708 884736 94 4294967295 134512640 135332820 3221224448 3221219612 135092226 0 2147483391 7 90112 0 0 0 17 1 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 864
[startup+10.0006 s]
Raw data (loadavg): 0.81 0.91 0.97 2/55 4786
Raw data (stat): 4783 (vallstSAT2005PB) S 4782 25399 25398 0 -1 0 321 231 0 0 0 0 0 0 20 0 1 0 858866708 2179072 242 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 1132560122 3222414538 0 0 17 1 0 0
Raw data (statm): 532 242 485 147 0 385 0
vsize: 2128
[startup+20.0014 s]
Raw data (loadavg): 0.84 0.92 0.97 2/55 4786
Raw data (stat): 4783 (vallstSAT2005PB) S 4782 25399 25398 0 -1 0 321 231 0 0 0 0 0 0 20 0 1 0 858866708 2179072 242 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 1132560122 3222414538 0 0 17 1 0 0
Raw data (statm): 532 242 485 147 0 385 0
vsize: 2128
[startup+30.0018 s]
Raw data (loadavg): 0.86 0.92 0.97 2/55 4786
Raw data (stat): 4783 (vallstSAT2005PB) S 4782 25399 25398 0 -1 0 321 231 0 0 0 0 0 0 20 0 1 0 858866708 2179072 242 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 1132560122 3222414538 0 0 17 1 0 0
Raw data (statm): 532 242 485 147 0 385 0
vsize: 2128
[startup+40.0246 s]
Raw data (loadavg): 0.88 0.92 0.97 2/55 4786
Raw data (stat): 4783 (vallstSAT2005PB) S 4782 25399 25398 0 -1 0 321 231 0 0 0 0 0 0 20 0 1 0 858866708 2179072 242 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 1132560122 3222414538 0 0 17 1 0 0
Raw data (statm): 532 242 485 147 0 385 0
vsize: 2128
[startup+43.6285 s]
Raw data (loadavg): 0.89 0.92 0.97 1/53 4790
Raw data (stat): 4783 (vallstSAT2005PB) S 4782 25399 25398 0 -1 0 321 231 0 0 0 0 0 0 20 0 1 0 858866708 2179072 242 4294967295 134512640 135087896 3221224512 3221223784 1074634510 0 65536 5 1132560122 3222414538 0 0 17 1 0 0
Raw data (statm): 532 242 485 147 0 385 0
vsize: 0

Child status: 20
Real time (s): 43.6282
CPU time (s): 43.1754
CPU user time (s): 42.8435
CPU system time (s): 0.331949
CPU usage (%): 98.9622
Max. virtual memory (Kb): 2128
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####