java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/list-ext-properties/list-ext_flag.i


--------------------------------------------------------------------------------


This is Ultimate 0.1.24-13a467a-m
[2019-10-15 02:58:11,959 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-10-15 02:58:11,962 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-10-15 02:58:11,975 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-10-15 02:58:11,976 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-10-15 02:58:11,977 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-10-15 02:58:11,979 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-10-15 02:58:11,983 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2019-10-15 02:58:11,985 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-10-15 02:58:11,986 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-10-15 02:58:11,987 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2019-10-15 02:58:11,989 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-10-15 02:58:11,989 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-10-15 02:58:11,995 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-10-15 02:58:11,996 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-10-15 02:58:11,997 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-10-15 02:58:11,998 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-10-15 02:58:11,999 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-10-15 02:58:12,000 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-10-15 02:58:12,002 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-10-15 02:58:12,003 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-10-15 02:58:12,004 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-10-15 02:58:12,005 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-10-15 02:58:12,006 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-10-15 02:58:12,008 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-10-15 02:58:12,008 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-10-15 02:58:12,008 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-10-15 02:58:12,009 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-10-15 02:58:12,010 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-10-15 02:58:12,010 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-10-15 02:58:12,011 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-10-15 02:58:12,011 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-10-15 02:58:12,012 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2019-10-15 02:58:12,013 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2019-10-15 02:58:12,014 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2019-10-15 02:58:12,014 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2019-10-15 02:58:12,014 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2019-10-15 02:58:12,015 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2019-10-15 02:58:12,015 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2019-10-15 02:58:12,016 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2019-10-15 02:58:12,016 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-10-15 02:58:12,018 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2019-10-15 02:58:12,038 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-15 02:58:12,038 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-15 02:58:12,042 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-15 02:58:12,042 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-15 02:58:12,042 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-15 02:58:12,043 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-15 02:58:12,043 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-15 02:58:12,043 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-15 02:58:12,043 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-15 02:58:12,043 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-15 02:58:12,044 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-15 02:58:12,044 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-15 02:58:12,044 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-15 02:58:12,046 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-15 02:58:12,046 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-15 02:58:12,046 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-15 02:58:12,046 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-15 02:58:12,046 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-15 02:58:12,047 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-15 02:58:12,047 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-15 02:58:12,047 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-15 02:58:12,048 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-15 02:58:12,048 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-15 02:58:12,048 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-15 02:58:12,048 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-15 02:58:12,048 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-15 02:58:12,049 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-15 02:58:12,049 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-15 02:58:12,049 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK
[2019-10-15 02:58:12,327 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-15 02:58:12,340 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-15 02:58:12,344 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-15 02:58:12,345 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-15 02:58:12,346 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-15 02:58:12,346 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/list-ext_flag.i
[2019-10-15 02:58:12,404 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8c819c46/3ef074a8b5aa4aa0a39263ba46ea431f/FLAG46da057fc
[2019-10-15 02:58:12,882 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-15 02:58:12,882 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext-properties/list-ext_flag.i
[2019-10-15 02:58:12,895 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8c819c46/3ef074a8b5aa4aa0a39263ba46ea431f/FLAG46da057fc
[2019-10-15 02:58:13,243 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8c819c46/3ef074a8b5aa4aa0a39263ba46ea431f
[2019-10-15 02:58:13,254 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-15 02:58:13,255 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-15 02:58:13,256 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-15 02:58:13,256 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-15 02:58:13,260 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-15 02:58:13,261 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:58:13" (1/1) ...
[2019-10-15 02:58:13,263 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b5f41b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:13, skipping insertion in model container
[2019-10-15 02:58:13,263 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:58:13" (1/1) ...
[2019-10-15 02:58:13,271 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-15 02:58:13,327 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-15 02:58:13,803 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-15 02:58:13,816 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-15 02:58:13,865 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-15 02:58:13,930 INFO  L192         MainTranslator]: Completed translation
[2019-10-15 02:58:13,931 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:13 WrapperNode
[2019-10-15 02:58:13,931 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-15 02:58:13,932 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-15 02:58:13,933 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-15 02:58:13,933 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-15 02:58:13,947 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:13" (1/1) ...
[2019-10-15 02:58:13,948 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:13" (1/1) ...
[2019-10-15 02:58:13,985 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:13" (1/1) ...
[2019-10-15 02:58:13,985 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:13" (1/1) ...
[2019-10-15 02:58:14,020 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:13" (1/1) ...
[2019-10-15 02:58:14,025 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:13" (1/1) ...
[2019-10-15 02:58:14,037 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:13" (1/1) ...
[2019-10-15 02:58:14,050 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-15 02:58:14,051 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-15 02:58:14,051 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-15 02:58:14,051 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-15 02:58:14,052 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:13" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-15 02:58:14,129 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-15 02:58:14,129 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-15 02:58:14,130 INFO  L138     BoogieDeclarations]: Found implementation of procedure __bswap_32
[2019-10-15 02:58:14,130 INFO  L138     BoogieDeclarations]: Found implementation of procedure __bswap_64
[2019-10-15 02:58:14,130 INFO  L138     BoogieDeclarations]: Found implementation of procedure __uint16_identity
[2019-10-15 02:58:14,131 INFO  L138     BoogieDeclarations]: Found implementation of procedure __uint32_identity
[2019-10-15 02:58:14,131 INFO  L138     BoogieDeclarations]: Found implementation of procedure __uint64_identity
[2019-10-15 02:58:14,131 INFO  L138     BoogieDeclarations]: Found implementation of procedure myexit
[2019-10-15 02:58:14,132 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-15 02:58:14,132 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-15 02:58:14,132 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-15 02:58:14,133 INFO  L130     BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max
[2019-10-15 02:58:14,133 INFO  L130     BoogieDeclarations]: Found specification of procedure atof
[2019-10-15 02:58:14,133 INFO  L130     BoogieDeclarations]: Found specification of procedure atoi
[2019-10-15 02:58:14,134 INFO  L130     BoogieDeclarations]: Found specification of procedure atol
[2019-10-15 02:58:14,134 INFO  L130     BoogieDeclarations]: Found specification of procedure atoll
[2019-10-15 02:58:14,136 INFO  L130     BoogieDeclarations]: Found specification of procedure strtod
[2019-10-15 02:58:14,136 INFO  L130     BoogieDeclarations]: Found specification of procedure strtof
[2019-10-15 02:58:14,136 INFO  L130     BoogieDeclarations]: Found specification of procedure strtold
[2019-10-15 02:58:14,136 INFO  L130     BoogieDeclarations]: Found specification of procedure strtol
[2019-10-15 02:58:14,136 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoul
[2019-10-15 02:58:14,136 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoq
[2019-10-15 02:58:14,137 INFO  L130     BoogieDeclarations]: Found specification of procedure strtouq
[2019-10-15 02:58:14,137 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoll
[2019-10-15 02:58:14,137 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoull
[2019-10-15 02:58:14,137 INFO  L130     BoogieDeclarations]: Found specification of procedure l64a
[2019-10-15 02:58:14,137 INFO  L130     BoogieDeclarations]: Found specification of procedure a64l
[2019-10-15 02:58:14,137 INFO  L130     BoogieDeclarations]: Found specification of procedure __bswap_32
[2019-10-15 02:58:14,138 INFO  L130     BoogieDeclarations]: Found specification of procedure __bswap_64
[2019-10-15 02:58:14,138 INFO  L130     BoogieDeclarations]: Found specification of procedure __uint16_identity
[2019-10-15 02:58:14,138 INFO  L130     BoogieDeclarations]: Found specification of procedure __uint32_identity
[2019-10-15 02:58:14,138 INFO  L130     BoogieDeclarations]: Found specification of procedure __uint64_identity
[2019-10-15 02:58:14,138 INFO  L130     BoogieDeclarations]: Found specification of procedure select
[2019-10-15 02:58:14,138 INFO  L130     BoogieDeclarations]: Found specification of procedure pselect
[2019-10-15 02:58:14,139 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_major
[2019-10-15 02:58:14,139 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_minor
[2019-10-15 02:58:14,139 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_makedev
[2019-10-15 02:58:14,139 INFO  L130     BoogieDeclarations]: Found specification of procedure random
[2019-10-15 02:58:14,139 INFO  L130     BoogieDeclarations]: Found specification of procedure srandom
[2019-10-15 02:58:14,140 INFO  L130     BoogieDeclarations]: Found specification of procedure initstate
[2019-10-15 02:58:14,140 INFO  L130     BoogieDeclarations]: Found specification of procedure setstate
[2019-10-15 02:58:14,140 INFO  L130     BoogieDeclarations]: Found specification of procedure random_r
[2019-10-15 02:58:14,140 INFO  L130     BoogieDeclarations]: Found specification of procedure srandom_r
[2019-10-15 02:58:14,140 INFO  L130     BoogieDeclarations]: Found specification of procedure initstate_r
[2019-10-15 02:58:14,140 INFO  L130     BoogieDeclarations]: Found specification of procedure setstate_r
[2019-10-15 02:58:14,140 INFO  L130     BoogieDeclarations]: Found specification of procedure rand
[2019-10-15 02:58:14,141 INFO  L130     BoogieDeclarations]: Found specification of procedure srand
[2019-10-15 02:58:14,141 INFO  L130     BoogieDeclarations]: Found specification of procedure rand_r
[2019-10-15 02:58:14,141 INFO  L130     BoogieDeclarations]: Found specification of procedure drand48
[2019-10-15 02:58:14,141 INFO  L130     BoogieDeclarations]: Found specification of procedure erand48
[2019-10-15 02:58:14,141 INFO  L130     BoogieDeclarations]: Found specification of procedure lrand48
[2019-10-15 02:58:14,141 INFO  L130     BoogieDeclarations]: Found specification of procedure nrand48
[2019-10-15 02:58:14,141 INFO  L130     BoogieDeclarations]: Found specification of procedure mrand48
[2019-10-15 02:58:14,142 INFO  L130     BoogieDeclarations]: Found specification of procedure jrand48
[2019-10-15 02:58:14,142 INFO  L130     BoogieDeclarations]: Found specification of procedure srand48
[2019-10-15 02:58:14,142 INFO  L130     BoogieDeclarations]: Found specification of procedure seed48
[2019-10-15 02:58:14,142 INFO  L130     BoogieDeclarations]: Found specification of procedure lcong48
[2019-10-15 02:58:14,142 INFO  L130     BoogieDeclarations]: Found specification of procedure drand48_r
[2019-10-15 02:58:14,142 INFO  L130     BoogieDeclarations]: Found specification of procedure erand48_r
[2019-10-15 02:58:14,143 INFO  L130     BoogieDeclarations]: Found specification of procedure lrand48_r
[2019-10-15 02:58:14,143 INFO  L130     BoogieDeclarations]: Found specification of procedure nrand48_r
[2019-10-15 02:58:14,143 INFO  L130     BoogieDeclarations]: Found specification of procedure mrand48_r
[2019-10-15 02:58:14,143 INFO  L130     BoogieDeclarations]: Found specification of procedure jrand48_r
[2019-10-15 02:58:14,143 INFO  L130     BoogieDeclarations]: Found specification of procedure srand48_r
[2019-10-15 02:58:14,144 INFO  L130     BoogieDeclarations]: Found specification of procedure seed48_r
[2019-10-15 02:58:14,144 INFO  L130     BoogieDeclarations]: Found specification of procedure lcong48_r
[2019-10-15 02:58:14,144 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2019-10-15 02:58:14,144 INFO  L130     BoogieDeclarations]: Found specification of procedure calloc
[2019-10-15 02:58:14,145 INFO  L130     BoogieDeclarations]: Found specification of procedure realloc
[2019-10-15 02:58:14,145 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2019-10-15 02:58:14,145 INFO  L130     BoogieDeclarations]: Found specification of procedure alloca
[2019-10-15 02:58:14,145 INFO  L130     BoogieDeclarations]: Found specification of procedure valloc
[2019-10-15 02:58:14,145 INFO  L130     BoogieDeclarations]: Found specification of procedure posix_memalign
[2019-10-15 02:58:14,146 INFO  L130     BoogieDeclarations]: Found specification of procedure aligned_alloc
[2019-10-15 02:58:14,146 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2019-10-15 02:58:14,146 INFO  L130     BoogieDeclarations]: Found specification of procedure atexit
[2019-10-15 02:58:14,147 INFO  L130     BoogieDeclarations]: Found specification of procedure at_quick_exit
[2019-10-15 02:58:14,147 INFO  L130     BoogieDeclarations]: Found specification of procedure on_exit
[2019-10-15 02:58:14,147 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-15 02:58:14,147 INFO  L130     BoogieDeclarations]: Found specification of procedure quick_exit
[2019-10-15 02:58:14,148 INFO  L130     BoogieDeclarations]: Found specification of procedure _Exit
[2019-10-15 02:58:14,148 INFO  L130     BoogieDeclarations]: Found specification of procedure getenv
[2019-10-15 02:58:14,149 INFO  L130     BoogieDeclarations]: Found specification of procedure putenv
[2019-10-15 02:58:14,149 INFO  L130     BoogieDeclarations]: Found specification of procedure setenv
[2019-10-15 02:58:14,149 INFO  L130     BoogieDeclarations]: Found specification of procedure unsetenv
[2019-10-15 02:58:14,149 INFO  L130     BoogieDeclarations]: Found specification of procedure clearenv
[2019-10-15 02:58:14,149 INFO  L130     BoogieDeclarations]: Found specification of procedure mktemp
[2019-10-15 02:58:14,150 INFO  L130     BoogieDeclarations]: Found specification of procedure mkstemp
[2019-10-15 02:58:14,150 INFO  L130     BoogieDeclarations]: Found specification of procedure mkstemps
[2019-10-15 02:58:14,150 INFO  L130     BoogieDeclarations]: Found specification of procedure mkdtemp
[2019-10-15 02:58:14,150 INFO  L130     BoogieDeclarations]: Found specification of procedure system
[2019-10-15 02:58:14,151 INFO  L130     BoogieDeclarations]: Found specification of procedure realpath
[2019-10-15 02:58:14,151 INFO  L130     BoogieDeclarations]: Found specification of procedure bsearch
[2019-10-15 02:58:14,151 INFO  L130     BoogieDeclarations]: Found specification of procedure qsort
[2019-10-15 02:58:14,151 INFO  L130     BoogieDeclarations]: Found specification of procedure abs
[2019-10-15 02:58:14,151 INFO  L130     BoogieDeclarations]: Found specification of procedure labs
[2019-10-15 02:58:14,151 INFO  L130     BoogieDeclarations]: Found specification of procedure llabs
[2019-10-15 02:58:14,151 INFO  L130     BoogieDeclarations]: Found specification of procedure div
[2019-10-15 02:58:14,152 INFO  L130     BoogieDeclarations]: Found specification of procedure ldiv
[2019-10-15 02:58:14,152 INFO  L130     BoogieDeclarations]: Found specification of procedure lldiv
[2019-10-15 02:58:14,152 INFO  L130     BoogieDeclarations]: Found specification of procedure ecvt
[2019-10-15 02:58:14,152 INFO  L130     BoogieDeclarations]: Found specification of procedure fcvt
[2019-10-15 02:58:14,152 INFO  L130     BoogieDeclarations]: Found specification of procedure gcvt
[2019-10-15 02:58:14,152 INFO  L130     BoogieDeclarations]: Found specification of procedure qecvt
[2019-10-15 02:58:14,152 INFO  L130     BoogieDeclarations]: Found specification of procedure qfcvt
[2019-10-15 02:58:14,153 INFO  L130     BoogieDeclarations]: Found specification of procedure qgcvt
[2019-10-15 02:58:14,153 INFO  L130     BoogieDeclarations]: Found specification of procedure ecvt_r
[2019-10-15 02:58:14,153 INFO  L130     BoogieDeclarations]: Found specification of procedure fcvt_r
[2019-10-15 02:58:14,153 INFO  L130     BoogieDeclarations]: Found specification of procedure qecvt_r
[2019-10-15 02:58:14,153 INFO  L130     BoogieDeclarations]: Found specification of procedure qfcvt_r
[2019-10-15 02:58:14,153 INFO  L130     BoogieDeclarations]: Found specification of procedure mblen
[2019-10-15 02:58:14,153 INFO  L130     BoogieDeclarations]: Found specification of procedure mbtowc
[2019-10-15 02:58:14,153 INFO  L130     BoogieDeclarations]: Found specification of procedure wctomb
[2019-10-15 02:58:14,154 INFO  L130     BoogieDeclarations]: Found specification of procedure mbstowcs
[2019-10-15 02:58:14,154 INFO  L130     BoogieDeclarations]: Found specification of procedure wcstombs
[2019-10-15 02:58:14,154 INFO  L130     BoogieDeclarations]: Found specification of procedure rpmatch
[2019-10-15 02:58:14,154 INFO  L130     BoogieDeclarations]: Found specification of procedure getsubopt
[2019-10-15 02:58:14,154 INFO  L130     BoogieDeclarations]: Found specification of procedure getloadavg
[2019-10-15 02:58:14,155 INFO  L130     BoogieDeclarations]: Found specification of procedure myexit
[2019-10-15 02:58:14,155 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-15 02:58:14,155 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2019-10-15 02:58:14,155 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2019-10-15 02:58:14,156 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2019-10-15 02:58:14,156 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2019-10-15 02:58:14,157 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2019-10-15 02:58:14,157 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2019-10-15 02:58:14,157 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-15 02:58:14,157 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-15 02:58:14,514 INFO  L685   $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true;
[2019-10-15 02:58:14,741 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-15 02:58:14,741 INFO  L284             CfgBuilder]: Removed 3 assume(true) statements.
[2019-10-15 02:58:14,743 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:58:14 BoogieIcfgContainer
[2019-10-15 02:58:14,743 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-15 02:58:14,744 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-15 02:58:14,744 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-15 02:58:14,748 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-15 02:58:14,748 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:58:13" (1/3) ...
[2019-10-15 02:58:14,749 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a810cb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:58:14, skipping insertion in model container
[2019-10-15 02:58:14,749 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:13" (2/3) ...
[2019-10-15 02:58:14,749 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a810cb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:58:14, skipping insertion in model container
[2019-10-15 02:58:14,750 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:58:14" (3/3) ...
[2019-10-15 02:58:14,751 INFO  L109   eAbstractionObserver]: Analyzing ICFG list-ext_flag.i
[2019-10-15 02:58:14,761 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-15 02:58:14,769 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-15 02:58:14,781 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-15 02:58:14,806 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-15 02:58:14,807 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-15 02:58:14,807 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-15 02:58:14,807 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-15 02:58:14,807 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-15 02:58:14,808 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-15 02:58:14,808 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-15 02:58:14,808 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-15 02:58:14,827 INFO  L276                IsEmpty]: Start isEmpty. Operand 33 states.
[2019-10-15 02:58:14,833 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2019-10-15 02:58:14,834 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-15 02:58:14,835 INFO  L380         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-15 02:58:14,837 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-15 02:58:14,842 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-15 02:58:14,843 INFO  L82        PathProgramCache]: Analyzing trace with hash -1488599810, now seen corresponding path program 1 times
[2019-10-15 02:58:14,853 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-15 02:58:14,854 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348209972]
[2019-10-15 02:58:14,854 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 02:58:14,854 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 02:58:14,854 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-15 02:58:14,963 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 02:58:15,004 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-15 02:58:15,005 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348209972]
[2019-10-15 02:58:15,007 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-15 02:58:15,007 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2019-10-15 02:58:15,007 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47173718]
[2019-10-15 02:58:15,012 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 2 states
[2019-10-15 02:58:15,012 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-15 02:58:15,022 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2019-10-15 02:58:15,023 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2019-10-15 02:58:15,024 INFO  L87              Difference]: Start difference. First operand 33 states. Second operand 2 states.
[2019-10-15 02:58:15,043 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-15 02:58:15,044 INFO  L93              Difference]: Finished difference Result 51 states and 69 transitions.
[2019-10-15 02:58:15,044 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2019-10-15 02:58:15,045 INFO  L78                 Accepts]: Start accepts. Automaton has 2 states. Word has length 13
[2019-10-15 02:58:15,045 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-15 02:58:15,053 INFO  L225             Difference]: With dead ends: 51
[2019-10-15 02:58:15,053 INFO  L226             Difference]: Without dead ends: 22
[2019-10-15 02:58:15,057 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2019-10-15 02:58:15,074 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2019-10-15 02:58:15,089 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22.
[2019-10-15 02:58:15,091 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2019-10-15 02:58:15,092 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions.
[2019-10-15 02:58:15,093 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 13
[2019-10-15 02:58:15,094 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-15 02:58:15,094 INFO  L462      AbstractCegarLoop]: Abstraction has 22 states and 26 transitions.
[2019-10-15 02:58:15,094 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 2 states.
[2019-10-15 02:58:15,094 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions.
[2019-10-15 02:58:15,095 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2019-10-15 02:58:15,095 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-15 02:58:15,095 INFO  L380         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-15 02:58:15,096 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-15 02:58:15,096 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-15 02:58:15,096 INFO  L82        PathProgramCache]: Analyzing trace with hash 1095619890, now seen corresponding path program 1 times
[2019-10-15 02:58:15,097 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-15 02:58:15,097 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449056419]
[2019-10-15 02:58:15,097 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 02:58:15,097 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 02:58:15,098 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-15 02:58:15,125 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 02:58:15,269 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-15 02:58:15,271 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449056419]
[2019-10-15 02:58:15,271 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-15 02:58:15,271 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2019-10-15 02:58:15,272 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985054423]
[2019-10-15 02:58:15,273 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 6 states
[2019-10-15 02:58:15,274 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-15 02:58:15,274 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2019-10-15 02:58:15,274 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2019-10-15 02:58:15,275 INFO  L87              Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 6 states.
[2019-10-15 02:58:15,357 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-15 02:58:15,357 INFO  L93              Difference]: Finished difference Result 37 states and 44 transitions.
[2019-10-15 02:58:15,357 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2019-10-15 02:58:15,358 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 15
[2019-10-15 02:58:15,358 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-15 02:58:15,359 INFO  L225             Difference]: With dead ends: 37
[2019-10-15 02:58:15,359 INFO  L226             Difference]: Without dead ends: 33
[2019-10-15 02:58:15,360 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2019-10-15 02:58:15,360 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2019-10-15 02:58:15,365 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27.
[2019-10-15 02:58:15,365 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 27 states.
[2019-10-15 02:58:15,366 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions.
[2019-10-15 02:58:15,366 INFO  L78                 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 15
[2019-10-15 02:58:15,366 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-15 02:58:15,367 INFO  L462      AbstractCegarLoop]: Abstraction has 27 states and 32 transitions.
[2019-10-15 02:58:15,367 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2019-10-15 02:58:15,367 INFO  L276                IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions.
[2019-10-15 02:58:15,367 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2019-10-15 02:58:15,368 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-15 02:58:15,368 INFO  L380         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-15 02:58:15,368 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-15 02:58:15,368 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-15 02:58:15,369 INFO  L82        PathProgramCache]: Analyzing trace with hash 1095661616, now seen corresponding path program 1 times
[2019-10-15 02:58:15,369 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-15 02:58:15,369 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186719277]
[2019-10-15 02:58:15,369 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 02:58:15,369 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 02:58:15,370 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-15 02:58:15,387 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 02:58:15,454 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-15 02:58:15,455 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186719277]
[2019-10-15 02:58:15,458 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-15 02:58:15,458 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-10-15 02:58:15,459 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600777844]
[2019-10-15 02:58:15,459 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-15 02:58:15,459 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-15 02:58:15,460 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-15 02:58:15,460 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-10-15 02:58:15,460 INFO  L87              Difference]: Start difference. First operand 27 states and 32 transitions. Second operand 5 states.
[2019-10-15 02:58:15,550 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-15 02:58:15,551 INFO  L93              Difference]: Finished difference Result 49 states and 60 transitions.
[2019-10-15 02:58:15,551 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-15 02:58:15,551 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 15
[2019-10-15 02:58:15,551 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-15 02:58:15,552 INFO  L225             Difference]: With dead ends: 49
[2019-10-15 02:58:15,552 INFO  L226             Difference]: Without dead ends: 36
[2019-10-15 02:58:15,553 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2019-10-15 02:58:15,553 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2019-10-15 02:58:15,557 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 24.
[2019-10-15 02:58:15,557 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2019-10-15 02:58:15,558 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions.
[2019-10-15 02:58:15,558 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 15
[2019-10-15 02:58:15,558 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-15 02:58:15,558 INFO  L462      AbstractCegarLoop]: Abstraction has 24 states and 28 transitions.
[2019-10-15 02:58:15,559 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-15 02:58:15,559 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions.
[2019-10-15 02:58:15,559 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2019-10-15 02:58:15,559 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-15 02:58:15,560 INFO  L380         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-15 02:58:15,560 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-15 02:58:15,560 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-15 02:58:15,560 INFO  L82        PathProgramCache]: Analyzing trace with hash 1925750866, now seen corresponding path program 1 times
[2019-10-15 02:58:15,561 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-15 02:58:15,561 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332425235]
[2019-10-15 02:58:15,561 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 02:58:15,561 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 02:58:15,561 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-15 02:58:15,615 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 02:58:15,739 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-15 02:58:15,740 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332425235]
[2019-10-15 02:58:15,740 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602533270]
[2019-10-15 02:58:15,740 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-15 02:58:15,922 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 02:58:15,925 INFO  L256         TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core
[2019-10-15 02:58:15,934 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-15 02:58:16,055 INFO  L375             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7
[2019-10-15 02:58:16,060 INFO  L496         ElimStorePlain]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-10-15 02:58:16,066 INFO  L567         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2019-10-15 02:58:16,066 INFO  L496         ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-10-15 02:58:16,067 INFO  L221         ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:18, output treesize:7
[2019-10-15 02:58:16,089 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-15 02:58:16,090 INFO  L321         TraceCheckSpWp]: Computing backward predicates...
[2019-10-15 02:58:16,108 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-15 02:58:16,141 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-15 02:58:16,141 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2133820487]
[2019-10-15 02:58:16,167 INFO  L162        IcfgInterpreter]: Started Sifa with 18 locations of interest
[2019-10-15 02:58:16,167 INFO  L169        IcfgInterpreter]: Building call graph
[2019-10-15 02:58:16,173 INFO  L174        IcfgInterpreter]: Initial procedures are [ULTIMATE.start]
[2019-10-15 02:58:16,181 INFO  L179        IcfgInterpreter]: Starting interpretation
[2019-10-15 02:58:16,182 INFO  L199        IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs
[2019-10-15 02:58:16,286 INFO  L199        IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs
[2019-10-15 02:58:19,018 INFO  L199        IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs
[2019-10-15 02:58:19,022 INFO  L183        IcfgInterpreter]: Interpretation finished
[2019-10-15 02:58:19,375 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences.
[2019-10-15 02:58:19,375 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7] total 20
[2019-10-15 02:58:19,375 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402852777]
[2019-10-15 02:58:19,377 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 21 states
[2019-10-15 02:58:19,377 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-15 02:58:19,377 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2019-10-15 02:58:19,378 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420
[2019-10-15 02:58:19,379 INFO  L87              Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 21 states.
[2019-10-15 02:58:20,022 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-15 02:58:20,023 INFO  L93              Difference]: Finished difference Result 73 states and 87 transitions.
[2019-10-15 02:58:20,023 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. 
[2019-10-15 02:58:20,023 INFO  L78                 Accepts]: Start accepts. Automaton has 21 states. Word has length 19
[2019-10-15 02:58:20,024 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-15 02:58:20,025 INFO  L225             Difference]: With dead ends: 73
[2019-10-15 02:58:20,025 INFO  L226             Difference]: Without dead ends: 65
[2019-10-15 02:58:20,026 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=217, Invalid=1043, Unknown=0, NotChecked=0, Total=1260
[2019-10-15 02:58:20,026 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 65 states.
[2019-10-15 02:58:20,033 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53.
[2019-10-15 02:58:20,033 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 53 states.
[2019-10-15 02:58:20,035 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 66 transitions.
[2019-10-15 02:58:20,035 INFO  L78                 Accepts]: Start accepts. Automaton has 53 states and 66 transitions. Word has length 19
[2019-10-15 02:58:20,035 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-15 02:58:20,035 INFO  L462      AbstractCegarLoop]: Abstraction has 53 states and 66 transitions.
[2019-10-15 02:58:20,036 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 21 states.
[2019-10-15 02:58:20,036 INFO  L276                IsEmpty]: Start isEmpty. Operand 53 states and 66 transitions.
[2019-10-15 02:58:20,036 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2019-10-15 02:58:20,036 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-15 02:58:20,037 INFO  L380         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-15 02:58:20,241 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-15 02:58:20,241 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-15 02:58:20,241 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-15 02:58:20,242 INFO  L82        PathProgramCache]: Analyzing trace with hash 1925792592, now seen corresponding path program 1 times
[2019-10-15 02:58:20,242 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-15 02:58:20,242 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785661905]
[2019-10-15 02:58:20,242 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 02:58:20,242 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 02:58:20,242 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-15 02:58:20,297 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 02:58:20,504 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-15 02:58:20,504 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785661905]
[2019-10-15 02:58:20,504 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140859742]
[2019-10-15 02:58:20,504 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-15 02:58:20,617 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 02:58:20,619 INFO  L256         TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 27 conjunts are in the unsatisfiable core
[2019-10-15 02:58:20,621 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-15 02:58:21,407 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-15 02:58:21,407 INFO  L321         TraceCheckSpWp]: Computing backward predicates...