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-v2-13-7/ftp.netlib.org/lp/data/normalized-mps-v2-13-7-stair.opb
MD5SUM07f65f29ee2937de43752221c6dbdf88
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 20
Biggest coefficient in the objective function 524288
Number of bits for the biggest coefficient in the objective function 20
Sum of the numbers in the objective function 1048575
Number of bits of the sum of numbers in the objective function 20
Biggest number in a constraint 516561567744
Number of bits of the biggest number in a constraint 39
Biggest sum of numbers in a constraint 3615347139525
Number of bits of the biggest sum of numbers42
Best result obtained on this benchmarkUNSAT
Best CPU time to get the best result obtained on this benchmark0.349946
Number of variables7646
Total number of constraints362
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 constraints362
Minimum length of a constraint10
Maximum length of a constraint540

Trace number 35498 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc1 THE 2005-05-28 13:19:04 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=24797 boxname=wulflinc1 idbench=1269 idsolver=17 numberseed=0
MD5SUM SOLVER: 
MD5SUM BENCH:  07f65f29ee2937de43752221c6dbdf88  /oldhome/oroussel/tmp/wulflinc1/normalized-mps-v2-13-7-stair.opb
REAL COMMAND:  pb2sat /oldhome/oroussel/tmp/wulflinc1/normalized-mps-v2-13-7-stair.opb
IDLAUNCH: 24797
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 2
cpu MHz		: 451.053
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		: 451.053
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:        721636 kB
Buffers:         36180 kB
Cached:         252344 kB
SwapCached:        680 kB
Active:          22596 kB
Inactive:       268256 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        721384 kB
SwapTotal:     2097136 kB
SwapFree:      2095368 kB
Dirty:              28 kB
Writeback:           0 kB
Mapped:           5812 kB
Slab:            16336 kB
Committed_AS:    92716 kB
PageTables:        332 kB
VmallocTotal:   114680 kB
VmallocUsed:      1388 kB
VmallocChunk:   113256 kB
JOB ENDED THE 2005-05-28 13:21:00 (client local time) WITH STATUS 1 IN 115.075 SECONDS
stats: 24797 7 115.075 1
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
c This solver internally uses Chaff 2004.11.15 Simplified

	Unexpected exception :
	St9bad_alloc
#### 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): 0.90 0.93 0.90 1/55 21096
Raw data (stat): 21096 (runsolver) R 21095 8378 8377 0 -1 64 8 0 0 0 0 0 0 0 19 0 1 0 750029946 884736 94 4294967295 134512640 135332820 3221224464 3221219644 135092226 0 0 7 90112 0 0 0 17 0 0 0
Raw data (statm): 216 94 205 205 0 11 0
vsize: 864
[startup+9.99995 s]
Raw data (loadavg): 0.92 0.93 0.90 2/55 21096
Raw data (stat): 21096 (pb2sat) R 21095 8378 8377 0 -1 0 29601 0 0 0 938 60 0 0 25 0 1 0 750029946 89530368 18463 4294967295 134512640 135726644 3221224592 3221135040 134782828 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 21858 18463 300 300 0 21558 0
vsize: 87432
[startup+20.0006 s]
Raw data (loadavg): 0.93 0.93 0.91 2/55 21096
Raw data (stat): 21096 (pb2sat) R 21095 8378 8377 0 -1 0 57887 0 0 0 1884 115 0 0 25 0 1 0 750029946 175493120 35536 4294967295 134512640 135726644 3221224592 3221141072 135279136 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 42845 35536 300 300 0 42545 0
vsize: 171380
[startup+30.0004 s]
Raw data (loadavg): 0.94 0.94 0.91 2/55 21096
Raw data (stat): 21096 (pb2sat) R 21095 8378 8377 0 -1 0 97513 0 0 0 2805 194 0 0 25 0 1 0 750029946 298471424 52977 4294967295 134512640 135726644 3221224592 3221140224 134767234 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 72869 52977 300 300 0 72569 0
vsize: 291476
[startup+40.0002 s]
Raw data (loadavg): 0.95 0.94 0.91 2/55 21096
Raw data (stat): 21096 (pb2sat) R 21095 8378 8377 0 -1 0 113090 0 0 0 3776 224 0 0 25 0 1 0 750029946 345812992 68332 4294967295 134512640 135726644 3221224592 3221137024 134767076 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 84427 68332 300 300 0 84127 0
vsize: 337708
[startup+50.0009 s]
Raw data (loadavg): 0.96 0.94 0.91 2/55 21096
Raw data (stat): 21096 (pb2sat) R 21095 8378 8377 0 -1 0 140097 0 0 0 4725 275 0 0 25 0 1 0 750029946 529625088 94846 4294967295 134512640 135726644 3221224592 3221143520 134771796 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 129303 94848 300 300 0 129003 0
vsize: 517212
[startup+60.0007 s]
Raw data (loadavg): 0.96 0.94 0.91 2/55 21096
Raw data (stat): 21096 (pb2sat) R 21095 8378 8377 0 -1 0 192711 0 0 0 5618 382 0 0 25 0 1 0 750029946 595750912 103599 4294967295 134512640 135726644 3221224592 3221141916 135280581 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 145447 103600 300 300 0 145147 0
vsize: 581788
[startup+70.0016 s]
Raw data (loadavg): 0.97 0.94 0.91 2/55 21096
Raw data (stat): 21096 (pb2sat) R 21095 8378 8377 0 -1 0 203537 0 0 0 6596 404 0 0 25 0 1 0 750029946 629305344 114229 4294967295 134512640 135726644 3221224592 3221144272 135279093 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 153639 114229 300 300 0 153339 0
vsize: 614556
[startup+80.0023 s]
Raw data (loadavg): 0.97 0.94 0.91 2/55 21096
Raw data (stat): 21096 (pb2sat) R 21095 8378 8377 0 -1 0 220693 0 0 0 7567 434 0 0 25 0 1 0 750029946 648384512 131159 4294967295 134512640 135726644 3221224592 3221144688 134554691 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 158297 131160 300 300 0 157997 0
vsize: 633188
[startup+90.0021 s]
Raw data (loadavg): 0.98 0.94 0.91 2/55 21096
Raw data (stat): 21096 (pb2sat) R 21095 8378 8377 0 -1 0 239823 0 0 0 8529 471 0 0 25 0 1 0 750029946 676388864 150066 4294967295 134512640 135726644 3221224592 3221146288 134554691 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 165134 150066 300 300 0 164834 0
vsize: 660536
[startup+100.002 s]
Raw data (loadavg): 0.98 0.95 0.91 2/55 21096
Raw data (stat): 21096 (pb2sat) R 21095 8378 8377 0 -1 0 254782 0 0 0 9499 501 0 0 25 0 1 0 750029946 748351488 164852 4294967295 134512640 135726644 3221224592 3221145552 134607465 0 0 7 16384 0 0 0 17 1 0 0
Raw data (statm): 182703 164854 300 300 0 182403 0
vsize: 730812
[startup+110.003 s]
Raw data (loadavg): 0.98 0.95 0.91 2/55 21096
Raw data (stat): 21096 (pb2sat) R 21095 8378 8377 0 -1 0 263740 0 0 0 10469 531 0 0 25 0 1 0 750029946 401522688 97559 4294967295 134512640 135726644 3221224592 3221222780 135277589 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 98028 97559 300 300 0 97728 0
vsize: 392112
[startup+115.074 s]
Raw data (loadavg): 0.98 0.95 0.91 1/54 21096
Raw data (stat): 21096 (pb2sat) R 21095 8378 8377 0 -1 0 263740 0 0 0 10469 531 0 0 25 0 1 0 750029946 401522688 97559 4294967295 134512640 135726644 3221224592 3221222780 135277589 0 0 7 16384 0 0 0 17 0 0 0
Raw data (statm): 98028 97559 300 300 0 97728 0
vsize: 0

Child status: 1
Real time (s): 115.073
CPU time (s): 115.075
CPU user time (s): 109.548
CPU system time (s): 5.52616
CPU usage (%): 100.001
Max. virtual memory (Kb): 730812
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
ERROR: no interpretation found !
#### END VERIFIER DATA ####