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/www.csit.fsu.edu/~burkardt/datasets/mps/normalized-mps-v2-20-10-nazareth.opb
MD5SUM1d16d9273da855e9ddf9502b6d199f2a
Bench Categoryoptimization, big integers (OPTBIGINT)
Has Objective FunctionYES
SatisfiableYES
(Un)Satisfiability was provedYES
Best value of the objective function -1073741823
Optimality of the best value was proved NO
Number of terms in the objective function 78
Biggest coefficient in the objective function 1073741824
Number of bits for the biggest coefficient in the objective function 31
Sum of the numbers in the objective function 3221356541
Number of bits of the sum of numbers in the objective function 32
Biggest number in a constraint 5368724480
Number of bits of the biggest number in a constraint 33
Biggest sum of numbers in a constraint 20401110007
Number of bits of the biggest sum of numbers35
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.18697
Number of variables78
Total number of constraints3
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 constraints3
Minimum length of a constraint17
Maximum length of a constraint61

Trace number 34362 

#### BEGIN LAUNCHER DATA ####
LAUNCH ON wulflinc22 THE 2005-05-27 22:16:41 (client local time)
PB2005-SCRIPT v4.0 
MARKUPS: idlaunch=15387 boxname=wulflinc22 idbench=1184 idsolver=8 numberseed=0
MD5SUM SOLVER: 4b637b3b6117f2add1a6288e91336322  /oldhome/oroussel/solvers/vallstSAT2005PB.sh
MD5SUM BENCH:  1d16d9273da855e9ddf9502b6d199f2a  /oldhome/oroussel/tmp/wulflinc22/normalized-mps-v2-20-10-nazareth.opb
REAL COMMAND:  vallstSAT2005PB.sh /oldhome/oroussel/tmp/wulflinc22/normalized-mps-v2-20-10-nazareth.opb 0
IDLAUNCH: 15387
/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.031
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	: 890.88

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 7
model name	: Pentium III (Katmai)
stepping	: 3
cpu MHz		: 451.031
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:        677896 kB
Buffers:         35972 kB
Cached:         298068 kB
SwapCached:        384 kB
Active:          56420 kB
Inactive:       279872 kB
HighTotal:      131008 kB
HighFree:          252 kB
LowTotal:       903652 kB
LowFree:        677644 kB
SwapTotal:     2097892 kB
SwapFree:      2096800 kB
Dirty:              40 kB
Writeback:           0 kB
Mapped:           5536 kB
Slab:            14968 kB
Committed_AS:    63604 kB
PageTables:        316 kB
VmallocTotal:   114680 kB
VmallocUsed:      1368 kB
VmallocChunk:   113252 kB
JOB ENDED THE 2005-05-27 22:16:42 (client local time) WITH STATUS 30 IN 0.25596 SECONDS
stats: 15387 0 0.25596 30
#### END LAUNCHER DATA ####
#### BEGIN SOLVER DATA ####
1:
seed: 0
Nr of vars set: 1  (#equs: 0)
Nr of vars set: 1  (#equs: 0)
#decisions: 11;  #end-nodes: 0;
#proof improvement attempts: 0;  #restarts: 0
Current batch, end-nodes: 0 / 80 (80)
#axs: 2, #non-axs: 0
tight: meta-meta: start: 6, end: 9;  meta: start: 12, end (keep): 23
loose: meta-meta: start: 9, end: 14;  meta: start: 30, end (keep): 50
result: model found (1)
Model found with constant:  3221356540 (0:>=*);
Model found with constant:
  (pushed:) 4294967295 (3221356541:>=*)

With an increment of the last pushed constant, a proof of false was found.
result: proof of false found (0)
seed: 0
Nr of vars set: 1  (#equs: 0)
Time taken in milliseconds: 100
times:
0m0.019s 0m0.008s
0m0.059s 0m0.058s
v -CLNAM1_bit_10 -CLNAM1_bit_9 -CLNAM1_bit_8 -CLNAM1_bit_7 -CLNAM1_bit_6 -CLNAM1_bit_5 -CLNAM1_bit_4 -CLNAM1_bit_3 -CLNAM1_bit_2 -CLNAM1_bit_1 -CLNAM1_bit0 -CLNAM1_bit1 -CLNAM1_bit2 -CLNAM1_bit3 -CLNAM1_bit4 -CLNAM1_bit5 -CLNAM1_bit6  CLNAM2_bit_10  CLNAM2_bit_9  CLNAM2_bit_8  CLNAM2_bit_7  CLNAM2_bit_6  CLNAM2_bit_5  CLNAM2_bit_4  CLNAM2_bit_3  CLNAM2_bit_2  CLNAM2_bit_1  CLNAM2_bit0  CLNAM2_bit1  CLNAM2_bit2  CLNAM2_bit3  CLNAM2_bit4  CLNAM2_bit5  CLNAM2_bit6  CLNAM2_bit7  CLNAM2_bit8  CLNAM2_bit9  CLNAM2_bit10  CLNAM2_bit11  CLNAM2_bit12  CLNAM2_bit13  CLNAM2_bit14  CLNAM2_bit15  CLNAM2_bit16  CLNAM2_bit17  CLNAM2_bit18  CLNAM2_bit19 -CLNAM3_bit_10 -CLNAM3_bit_9 -CLNAM3_bit_8 -CLNAM3_bit_7 -CLNAM3_bit_6 -CLNAM3_bit_5 -CLNAM3_bit_4 -CLNAM3_bit_3 -CLNAM3_bit_2 -CLNAM3_bit_1 -CLNAM3_bit0 -CLNAM3_bit1 -CLNAM3_bit2 -CLNAM3_bit3 -CLNAM3_bit4 -CLNAM3_bit5 -CLNAM3_bit6 -CLNAM3_bit7 -CLNAM3_bit8 -CLNAM3_bit9 -CLNAM3_bit10 -CLNAM3_bit11 -CLNAM3_bit12 -CLNAM3_bit13 -CLNAM3_bit14 -CLNAM3_bit15 -CLNAM3_bit16 -CLNAM3_bit17 -CLNAM3_bit18 -CLNAM3_bit19 -CLNAM3_bit20 
s OPTIMUM FOUND
#### 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
Raw data (loadavg): 0.84 0.94 0.90 2/54 27997
Raw data (stat): 27997 (runsolver) R 27996 23310 23309 0 -1 64 0 0 0 0 0 0 0 0 19 0 1 0 859691907 884736 93 4294967295 134512640 135332820 3221224448 3221219856 134515228 0 0 7 90112 0 0 0 17 1 0 0
Raw data (statm): 216 93 205 205 0 11 0
vsize: 864
Current StackSize limit: 67108864 bytes
[startup+0.603908 s]
Raw data (loadavg): 0.84 0.94 0.90 1/53 28010
Raw data (stat): 27997 (runsolver) R 27996 23310 23309 0 -1 64 0 0 0 0 0 0 0 0 19 0 1 0 859691907 884736 93 4294967295 134512640 135332820 3221224448 3221219856 134515228 0 0 7 90112 0 0 0 17 1 0 0
Raw data (statm): 216 93 205 205 0 11 0
vsize: 0

Child status: 30
Real time (s): 0.603677
CPU time (s): 0.25596
CPU user time (s): 0.140978
CPU system time (s): 0.114982
CPU usage (%): 42.4002
Max. virtual memory (Kb): 864
#### END WATCHER DATA ####
#### BEGIN VERIFIER DATA ####
Verifier:	OK	-1073741823
#### END VERIFIER DATA ####