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-simple/dll2n_update_all.i


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


This is Ultimate 0.1.24-13a467a-m
[2019-10-15 02:59:49,734 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-10-15 02:59:49,737 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-10-15 02:59:49,754 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-10-15 02:59:49,754 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-10-15 02:59:49,755 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-10-15 02:59:49,757 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-10-15 02:59:49,759 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2019-10-15 02:59:49,760 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-10-15 02:59:49,761 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-10-15 02:59:49,762 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2019-10-15 02:59:49,763 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-10-15 02:59:49,764 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-10-15 02:59:49,765 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-10-15 02:59:49,766 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-10-15 02:59:49,767 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-10-15 02:59:49,767 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-10-15 02:59:49,768 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-10-15 02:59:49,770 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-10-15 02:59:49,772 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-10-15 02:59:49,773 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-10-15 02:59:49,774 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-10-15 02:59:49,775 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-10-15 02:59:49,776 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-10-15 02:59:49,778 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-10-15 02:59:49,779 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-10-15 02:59:49,779 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-10-15 02:59:49,780 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-10-15 02:59:49,780 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-10-15 02:59:49,781 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-10-15 02:59:49,781 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-10-15 02:59:49,782 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-10-15 02:59:49,783 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2019-10-15 02:59:49,784 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2019-10-15 02:59:49,785 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2019-10-15 02:59:49,785 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2019-10-15 02:59:49,786 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2019-10-15 02:59:49,786 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2019-10-15 02:59:49,786 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2019-10-15 02:59:49,787 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2019-10-15 02:59:49,788 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-10-15 02:59:49,789 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 02:59:49,802 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-15 02:59:49,803 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-15 02:59:49,804 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-15 02:59:49,804 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-15 02:59:49,805 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-15 02:59:49,805 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-15 02:59:49,805 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-15 02:59:49,805 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-15 02:59:49,805 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-15 02:59:49,806 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-15 02:59:49,806 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-15 02:59:49,806 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-15 02:59:49,806 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-15 02:59:49,806 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-15 02:59:49,806 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-15 02:59:49,807 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-15 02:59:49,807 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-15 02:59:49,807 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-15 02:59:49,807 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-15 02:59:49,807 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-15 02:59:49,808 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-15 02:59:49,808 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-15 02:59:49,808 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-15 02:59:49,808 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-15 02:59:49,808 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-15 02:59:49,809 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-15 02:59:49,809 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-15 02:59:49,809 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-15 02:59:49,809 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 02:59:50,087 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-15 02:59:50,101 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-15 02:59:50,104 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-15 02:59:50,106 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-15 02:59:50,106 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-15 02:59:50,107 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_update_all.i
[2019-10-15 02:59:50,185 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce12fa220/1ad24e9e89854f46a9c1355f56b45662/FLAGbc67ac289
[2019-10-15 02:59:50,753 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-15 02:59:50,754 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2n_update_all.i
[2019-10-15 02:59:50,776 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce12fa220/1ad24e9e89854f46a9c1355f56b45662/FLAGbc67ac289
[2019-10-15 02:59:51,072 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce12fa220/1ad24e9e89854f46a9c1355f56b45662
[2019-10-15 02:59:51,082 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-15 02:59:51,084 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-15 02:59:51,085 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-15 02:59:51,085 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-15 02:59:51,089 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-15 02:59:51,090 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:59:51" (1/1) ...
[2019-10-15 02:59:51,093 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69bf1134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:51, skipping insertion in model container
[2019-10-15 02:59:51,093 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:59:51" (1/1) ...
[2019-10-15 02:59:51,101 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-15 02:59:51,162 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-15 02:59:51,599 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-15 02:59:51,613 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-15 02:59:51,661 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-15 02:59:51,721 INFO  L192         MainTranslator]: Completed translation
[2019-10-15 02:59:51,721 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:51 WrapperNode
[2019-10-15 02:59:51,721 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-15 02:59:51,722 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-15 02:59:51,722 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-15 02:59:51,722 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-15 02:59:51,736 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:51" (1/1) ...
[2019-10-15 02:59:51,737 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:51" (1/1) ...
[2019-10-15 02:59:51,757 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:51" (1/1) ...
[2019-10-15 02:59:51,758 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:51" (1/1) ...
[2019-10-15 02:59:51,775 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:51" (1/1) ...
[2019-10-15 02:59:51,783 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:51" (1/1) ...
[2019-10-15 02:59:51,786 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:51" (1/1) ...
[2019-10-15 02:59:51,793 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-15 02:59:51,794 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-15 02:59:51,794 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-15 02:59:51,794 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-15 02:59:51,795 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:51" (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 02:59:51,856 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-15 02:59:51,857 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-15 02:59:51,858 INFO  L138     BoogieDeclarations]: Found implementation of procedure __bswap_32
[2019-10-15 02:59:51,858 INFO  L138     BoogieDeclarations]: Found implementation of procedure __bswap_64
[2019-10-15 02:59:51,858 INFO  L138     BoogieDeclarations]: Found implementation of procedure myexit
[2019-10-15 02:59:51,858 INFO  L138     BoogieDeclarations]: Found implementation of procedure node_create
[2019-10-15 02:59:51,859 INFO  L138     BoogieDeclarations]: Found implementation of procedure dll_create
[2019-10-15 02:59:51,859 INFO  L138     BoogieDeclarations]: Found implementation of procedure dll_destroy
[2019-10-15 02:59:51,860 INFO  L138     BoogieDeclarations]: Found implementation of procedure dll_get_data_at
[2019-10-15 02:59:51,860 INFO  L138     BoogieDeclarations]: Found implementation of procedure dll_update_at
[2019-10-15 02:59:51,860 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-15 02:59:51,861 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-15 02:59:51,861 INFO  L130     BoogieDeclarations]: Found specification of procedure __bswap_32
[2019-10-15 02:59:51,861 INFO  L130     BoogieDeclarations]: Found specification of procedure __bswap_64
[2019-10-15 02:59:51,861 INFO  L130     BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max
[2019-10-15 02:59:51,862 INFO  L130     BoogieDeclarations]: Found specification of procedure atof
[2019-10-15 02:59:51,862 INFO  L130     BoogieDeclarations]: Found specification of procedure atoi
[2019-10-15 02:59:51,863 INFO  L130     BoogieDeclarations]: Found specification of procedure atol
[2019-10-15 02:59:51,863 INFO  L130     BoogieDeclarations]: Found specification of procedure atoll
[2019-10-15 02:59:51,863 INFO  L130     BoogieDeclarations]: Found specification of procedure strtod
[2019-10-15 02:59:51,863 INFO  L130     BoogieDeclarations]: Found specification of procedure strtof
[2019-10-15 02:59:51,864 INFO  L130     BoogieDeclarations]: Found specification of procedure strtold
[2019-10-15 02:59:51,864 INFO  L130     BoogieDeclarations]: Found specification of procedure strtol
[2019-10-15 02:59:51,864 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoul
[2019-10-15 02:59:51,864 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoq
[2019-10-15 02:59:51,866 INFO  L130     BoogieDeclarations]: Found specification of procedure strtouq
[2019-10-15 02:59:51,867 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoll
[2019-10-15 02:59:51,867 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoull
[2019-10-15 02:59:51,867 INFO  L130     BoogieDeclarations]: Found specification of procedure l64a
[2019-10-15 02:59:51,867 INFO  L130     BoogieDeclarations]: Found specification of procedure a64l
[2019-10-15 02:59:51,867 INFO  L130     BoogieDeclarations]: Found specification of procedure select
[2019-10-15 02:59:51,868 INFO  L130     BoogieDeclarations]: Found specification of procedure pselect
[2019-10-15 02:59:51,868 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_major
[2019-10-15 02:59:51,868 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_minor
[2019-10-15 02:59:51,868 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_makedev
[2019-10-15 02:59:51,868 INFO  L130     BoogieDeclarations]: Found specification of procedure random
[2019-10-15 02:59:51,869 INFO  L130     BoogieDeclarations]: Found specification of procedure srandom
[2019-10-15 02:59:51,869 INFO  L130     BoogieDeclarations]: Found specification of procedure initstate
[2019-10-15 02:59:51,869 INFO  L130     BoogieDeclarations]: Found specification of procedure setstate
[2019-10-15 02:59:51,869 INFO  L130     BoogieDeclarations]: Found specification of procedure random_r
[2019-10-15 02:59:51,869 INFO  L130     BoogieDeclarations]: Found specification of procedure srandom_r
[2019-10-15 02:59:51,869 INFO  L130     BoogieDeclarations]: Found specification of procedure initstate_r
[2019-10-15 02:59:51,870 INFO  L130     BoogieDeclarations]: Found specification of procedure setstate_r
[2019-10-15 02:59:51,870 INFO  L130     BoogieDeclarations]: Found specification of procedure rand
[2019-10-15 02:59:51,870 INFO  L130     BoogieDeclarations]: Found specification of procedure srand
[2019-10-15 02:59:51,870 INFO  L130     BoogieDeclarations]: Found specification of procedure rand_r
[2019-10-15 02:59:51,870 INFO  L130     BoogieDeclarations]: Found specification of procedure drand48
[2019-10-15 02:59:51,870 INFO  L130     BoogieDeclarations]: Found specification of procedure erand48
[2019-10-15 02:59:51,870 INFO  L130     BoogieDeclarations]: Found specification of procedure lrand48
[2019-10-15 02:59:51,871 INFO  L130     BoogieDeclarations]: Found specification of procedure nrand48
[2019-10-15 02:59:51,871 INFO  L130     BoogieDeclarations]: Found specification of procedure mrand48
[2019-10-15 02:59:51,872 INFO  L130     BoogieDeclarations]: Found specification of procedure jrand48
[2019-10-15 02:59:51,872 INFO  L130     BoogieDeclarations]: Found specification of procedure srand48
[2019-10-15 02:59:51,872 INFO  L130     BoogieDeclarations]: Found specification of procedure seed48
[2019-10-15 02:59:51,872 INFO  L130     BoogieDeclarations]: Found specification of procedure lcong48
[2019-10-15 02:59:51,872 INFO  L130     BoogieDeclarations]: Found specification of procedure drand48_r
[2019-10-15 02:59:51,873 INFO  L130     BoogieDeclarations]: Found specification of procedure erand48_r
[2019-10-15 02:59:51,873 INFO  L130     BoogieDeclarations]: Found specification of procedure lrand48_r
[2019-10-15 02:59:51,873 INFO  L130     BoogieDeclarations]: Found specification of procedure nrand48_r
[2019-10-15 02:59:51,873 INFO  L130     BoogieDeclarations]: Found specification of procedure mrand48_r
[2019-10-15 02:59:51,874 INFO  L130     BoogieDeclarations]: Found specification of procedure jrand48_r
[2019-10-15 02:59:51,874 INFO  L130     BoogieDeclarations]: Found specification of procedure srand48_r
[2019-10-15 02:59:51,874 INFO  L130     BoogieDeclarations]: Found specification of procedure seed48_r
[2019-10-15 02:59:51,874 INFO  L130     BoogieDeclarations]: Found specification of procedure lcong48_r
[2019-10-15 02:59:51,874 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2019-10-15 02:59:51,875 INFO  L130     BoogieDeclarations]: Found specification of procedure calloc
[2019-10-15 02:59:51,875 INFO  L130     BoogieDeclarations]: Found specification of procedure realloc
[2019-10-15 02:59:51,875 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2019-10-15 02:59:51,876 INFO  L130     BoogieDeclarations]: Found specification of procedure cfree
[2019-10-15 02:59:51,876 INFO  L130     BoogieDeclarations]: Found specification of procedure alloca
[2019-10-15 02:59:51,876 INFO  L130     BoogieDeclarations]: Found specification of procedure valloc
[2019-10-15 02:59:51,876 INFO  L130     BoogieDeclarations]: Found specification of procedure posix_memalign
[2019-10-15 02:59:51,876 INFO  L130     BoogieDeclarations]: Found specification of procedure aligned_alloc
[2019-10-15 02:59:51,877 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2019-10-15 02:59:51,877 INFO  L130     BoogieDeclarations]: Found specification of procedure atexit
[2019-10-15 02:59:51,878 INFO  L130     BoogieDeclarations]: Found specification of procedure at_quick_exit
[2019-10-15 02:59:51,878 INFO  L130     BoogieDeclarations]: Found specification of procedure on_exit
[2019-10-15 02:59:51,878 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-15 02:59:51,879 INFO  L130     BoogieDeclarations]: Found specification of procedure quick_exit
[2019-10-15 02:59:51,879 INFO  L130     BoogieDeclarations]: Found specification of procedure _Exit
[2019-10-15 02:59:51,880 INFO  L130     BoogieDeclarations]: Found specification of procedure getenv
[2019-10-15 02:59:51,880 INFO  L130     BoogieDeclarations]: Found specification of procedure putenv
[2019-10-15 02:59:51,880 INFO  L130     BoogieDeclarations]: Found specification of procedure setenv
[2019-10-15 02:59:51,880 INFO  L130     BoogieDeclarations]: Found specification of procedure unsetenv
[2019-10-15 02:59:51,880 INFO  L130     BoogieDeclarations]: Found specification of procedure clearenv
[2019-10-15 02:59:51,880 INFO  L130     BoogieDeclarations]: Found specification of procedure mktemp
[2019-10-15 02:59:51,881 INFO  L130     BoogieDeclarations]: Found specification of procedure mkstemp
[2019-10-15 02:59:51,881 INFO  L130     BoogieDeclarations]: Found specification of procedure mkstemps
[2019-10-15 02:59:51,882 INFO  L130     BoogieDeclarations]: Found specification of procedure mkdtemp
[2019-10-15 02:59:51,882 INFO  L130     BoogieDeclarations]: Found specification of procedure system
[2019-10-15 02:59:51,882 INFO  L130     BoogieDeclarations]: Found specification of procedure realpath
[2019-10-15 02:59:51,882 INFO  L130     BoogieDeclarations]: Found specification of procedure bsearch
[2019-10-15 02:59:51,882 INFO  L130     BoogieDeclarations]: Found specification of procedure qsort
[2019-10-15 02:59:51,882 INFO  L130     BoogieDeclarations]: Found specification of procedure abs
[2019-10-15 02:59:51,883 INFO  L130     BoogieDeclarations]: Found specification of procedure labs
[2019-10-15 02:59:51,883 INFO  L130     BoogieDeclarations]: Found specification of procedure llabs
[2019-10-15 02:59:51,883 INFO  L130     BoogieDeclarations]: Found specification of procedure div
[2019-10-15 02:59:51,883 INFO  L130     BoogieDeclarations]: Found specification of procedure ldiv
[2019-10-15 02:59:51,883 INFO  L130     BoogieDeclarations]: Found specification of procedure lldiv
[2019-10-15 02:59:51,883 INFO  L130     BoogieDeclarations]: Found specification of procedure ecvt
[2019-10-15 02:59:51,883 INFO  L130     BoogieDeclarations]: Found specification of procedure fcvt
[2019-10-15 02:59:51,884 INFO  L130     BoogieDeclarations]: Found specification of procedure gcvt
[2019-10-15 02:59:51,884 INFO  L130     BoogieDeclarations]: Found specification of procedure qecvt
[2019-10-15 02:59:51,884 INFO  L130     BoogieDeclarations]: Found specification of procedure qfcvt
[2019-10-15 02:59:51,884 INFO  L130     BoogieDeclarations]: Found specification of procedure qgcvt
[2019-10-15 02:59:51,884 INFO  L130     BoogieDeclarations]: Found specification of procedure ecvt_r
[2019-10-15 02:59:51,884 INFO  L130     BoogieDeclarations]: Found specification of procedure fcvt_r
[2019-10-15 02:59:51,884 INFO  L130     BoogieDeclarations]: Found specification of procedure qecvt_r
[2019-10-15 02:59:51,885 INFO  L130     BoogieDeclarations]: Found specification of procedure qfcvt_r
[2019-10-15 02:59:51,885 INFO  L130     BoogieDeclarations]: Found specification of procedure mblen
[2019-10-15 02:59:51,885 INFO  L130     BoogieDeclarations]: Found specification of procedure mbtowc
[2019-10-15 02:59:51,885 INFO  L130     BoogieDeclarations]: Found specification of procedure wctomb
[2019-10-15 02:59:51,885 INFO  L130     BoogieDeclarations]: Found specification of procedure mbstowcs
[2019-10-15 02:59:51,885 INFO  L130     BoogieDeclarations]: Found specification of procedure wcstombs
[2019-10-15 02:59:51,885 INFO  L130     BoogieDeclarations]: Found specification of procedure rpmatch
[2019-10-15 02:59:51,886 INFO  L130     BoogieDeclarations]: Found specification of procedure getsubopt
[2019-10-15 02:59:51,886 INFO  L130     BoogieDeclarations]: Found specification of procedure getloadavg
[2019-10-15 02:59:51,886 INFO  L130     BoogieDeclarations]: Found specification of procedure myexit
[2019-10-15 02:59:51,886 INFO  L130     BoogieDeclarations]: Found specification of procedure node_create
[2019-10-15 02:59:51,887 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2019-10-15 02:59:51,887 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2019-10-15 02:59:51,888 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2019-10-15 02:59:51,888 INFO  L130     BoogieDeclarations]: Found specification of procedure dll_create
[2019-10-15 02:59:51,888 INFO  L130     BoogieDeclarations]: Found specification of procedure dll_destroy
[2019-10-15 02:59:51,889 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2019-10-15 02:59:51,889 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2019-10-15 02:59:51,889 INFO  L130     BoogieDeclarations]: Found specification of procedure dll_get_data_at
[2019-10-15 02:59:51,889 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2019-10-15 02:59:51,889 INFO  L130     BoogieDeclarations]: Found specification of procedure dll_update_at
[2019-10-15 02:59:51,889 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-15 02:59:51,890 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-15 02:59:51,890 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-15 02:59:52,360 INFO  L685   $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true;
[2019-10-15 02:59:52,650 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-15 02:59:52,650 INFO  L284             CfgBuilder]: Removed 6 assume(true) statements.
[2019-10-15 02:59:52,651 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:59:52 BoogieIcfgContainer
[2019-10-15 02:59:52,652 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-15 02:59:52,653 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-15 02:59:52,653 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-15 02:59:52,657 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-15 02:59:52,657 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:59:51" (1/3) ...
[2019-10-15 02:59:52,658 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@497883b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:59:52, skipping insertion in model container
[2019-10-15 02:59:52,658 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:51" (2/3) ...
[2019-10-15 02:59:52,659 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@497883b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:59:52, skipping insertion in model container
[2019-10-15 02:59:52,659 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:59:52" (3/3) ...
[2019-10-15 02:59:52,661 INFO  L109   eAbstractionObserver]: Analyzing ICFG dll2n_update_all.i
[2019-10-15 02:59:52,671 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-15 02:59:52,680 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-15 02:59:52,690 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-15 02:59:52,712 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-15 02:59:52,712 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-15 02:59:52,713 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-15 02:59:52,713 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-15 02:59:52,713 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-15 02:59:52,713 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-15 02:59:52,713 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-15 02:59:52,713 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-15 02:59:52,731 INFO  L276                IsEmpty]: Start isEmpty. Operand 39 states.
[2019-10-15 02:59:52,737 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2019-10-15 02:59:52,738 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-15 02:59:52,739 INFO  L380         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-15 02:59:52,741 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-15 02:59:52,746 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-15 02:59:52,747 INFO  L82        PathProgramCache]: Analyzing trace with hash -1826980545, now seen corresponding path program 1 times
[2019-10-15 02:59:52,755 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-15 02:59:52,755 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240340114]
[2019-10-15 02:59:52,756 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 02:59:52,756 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 02:59:52,756 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-15 02:59:52,907 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 02:59:52,994 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 02:59:52,995 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240340114]
[2019-10-15 02:59:52,997 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-15 02:59:52,997 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-10-15 02:59:52,998 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067795141]
[2019-10-15 02:59:53,003 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-15 02:59:53,003 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-15 02:59:53,018 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-15 02:59:53,019 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-10-15 02:59:53,022 INFO  L87              Difference]: Start difference. First operand 39 states. Second operand 5 states.
[2019-10-15 02:59:53,154 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-15 02:59:53,154 INFO  L93              Difference]: Finished difference Result 69 states and 83 transitions.
[2019-10-15 02:59:53,155 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-15 02:59:53,156 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 19
[2019-10-15 02:59:53,157 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-15 02:59:53,165 INFO  L225             Difference]: With dead ends: 69
[2019-10-15 02:59:53,165 INFO  L226             Difference]: Without dead ends: 30
[2019-10-15 02:59:53,169 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-10-15 02:59:53,184 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2019-10-15 02:59:53,204 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28.
[2019-10-15 02:59:53,205 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2019-10-15 02:59:53,206 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions.
[2019-10-15 02:59:53,208 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 19
[2019-10-15 02:59:53,209 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-15 02:59:53,209 INFO  L462      AbstractCegarLoop]: Abstraction has 28 states and 32 transitions.
[2019-10-15 02:59:53,209 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-15 02:59:53,209 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions.
[2019-10-15 02:59:53,210 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2019-10-15 02:59:53,210 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-15 02:59:53,211 INFO  L380         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-15 02:59:53,211 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-15 02:59:53,211 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-15 02:59:53,211 INFO  L82        PathProgramCache]: Analyzing trace with hash 1740061534, now seen corresponding path program 1 times
[2019-10-15 02:59:53,212 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-15 02:59:53,212 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260108374]
[2019-10-15 02:59:53,212 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 02:59:53,212 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 02:59:53,213 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-15 02:59:53,275 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 02:59:53,388 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-15 02:59:53,389 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260108374]
[2019-10-15 02:59:53,390 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301235819]
[2019-10-15 02:59:53,391 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 02:59:53,530 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 02:59:53,533 INFO  L256         TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core
[2019-10-15 02:59:53,541 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-15 02:59:53,587 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-15 02:59:53,587 INFO  L321         TraceCheckSpWp]: Computing backward predicates...
[2019-10-15 02:59:53,718 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-15 02:59:53,719 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [680745565]
[2019-10-15 02:59:53,750 INFO  L162        IcfgInterpreter]: Started Sifa with 22 locations of interest
[2019-10-15 02:59:53,750 INFO  L169        IcfgInterpreter]: Building call graph
[2019-10-15 02:59:53,757 INFO  L174        IcfgInterpreter]: Initial procedures are [ULTIMATE.start]
[2019-10-15 02:59:53,765 INFO  L179        IcfgInterpreter]: Starting interpretation
[2019-10-15 02:59:53,766 INFO  L199        IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs
[2019-10-15 02:59:53,905 INFO  L199        IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs
[2019-10-15 02:59:54,047 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 02:59:54,488 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 02:59:54,775 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 02:59:55,279 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 02:59:55,292 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 02:59:55,304 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 02:59:55,315 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 02:59:56,205 INFO  L199        IcfgInterpreter]: Interpreting procedure dll_get_data_at with input of size 1 for LOIs
[2019-10-15 02:59:56,215 INFO  L199        IcfgInterpreter]: Interpreting procedure dll_create with input of size 33 for LOIs
[2019-10-15 02:59:59,319 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 02:59:59,401 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 02:59:59,409 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:00,663 INFO  L199        IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs
[2019-10-15 03:00:00,667 INFO  L183        IcfgInterpreter]: Interpretation finished
[2019-10-15 03:00:01,230 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences.
[2019-10-15 03:00:01,230 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [6, 6, 6] total 18
[2019-10-15 03:00:01,230 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788537923]
[2019-10-15 03:00:01,232 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 12 states
[2019-10-15 03:00:01,232 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-15 03:00:01,232 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2019-10-15 03:00:01,233 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306
[2019-10-15 03:00:01,233 INFO  L87              Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 12 states.
[2019-10-15 03:00:01,945 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-15 03:00:01,945 INFO  L93              Difference]: Finished difference Result 40 states and 47 transitions.
[2019-10-15 03:00:01,947 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2019-10-15 03:00:01,947 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 22
[2019-10-15 03:00:01,948 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-15 03:00:01,950 INFO  L225             Difference]: With dead ends: 40
[2019-10-15 03:00:01,950 INFO  L226             Difference]: Without dead ends: 31
[2019-10-15 03:00:01,952 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 52 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650
[2019-10-15 03:00:01,952 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2019-10-15 03:00:01,962 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29.
[2019-10-15 03:00:01,962 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 29 states.
[2019-10-15 03:00:01,963 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions.
[2019-10-15 03:00:01,963 INFO  L78                 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 22
[2019-10-15 03:00:01,963 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-15 03:00:01,964 INFO  L462      AbstractCegarLoop]: Abstraction has 29 states and 33 transitions.
[2019-10-15 03:00:01,964 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 12 states.
[2019-10-15 03:00:01,964 INFO  L276                IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions.
[2019-10-15 03:00:01,965 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2019-10-15 03:00:01,965 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-15 03:00:01,965 INFO  L380         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-15 03:00:02,178 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-15 03:00:02,178 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-15 03:00:02,179 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-15 03:00:02,179 INFO  L82        PathProgramCache]: Analyzing trace with hash 696544704, now seen corresponding path program 1 times
[2019-10-15 03:00:02,179 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-15 03:00:02,180 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676740963]
[2019-10-15 03:00:02,180 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:00:02,180 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:00:02,180 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-15 03:00:02,206 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 03:00:02,285 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-15 03:00:02,286 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676740963]
[2019-10-15 03:00:02,286 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811918571]
[2019-10-15 03:00:02,286 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 03:00:02,407 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 03:00:02,409 INFO  L256         TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core
[2019-10-15 03:00:02,411 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-15 03:00:02,419 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-15 03:00:02,420 INFO  L321         TraceCheckSpWp]: Computing backward predicates...
[2019-10-15 03:00:02,491 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-15 03:00:02,491 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2022045943]
[2019-10-15 03:00:02,493 INFO  L162        IcfgInterpreter]: Started Sifa with 27 locations of interest
[2019-10-15 03:00:02,493 INFO  L169        IcfgInterpreter]: Building call graph
[2019-10-15 03:00:02,494 INFO  L174        IcfgInterpreter]: Initial procedures are [ULTIMATE.start]
[2019-10-15 03:00:02,494 INFO  L179        IcfgInterpreter]: Starting interpretation
[2019-10-15 03:00:02,494 INFO  L199        IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs
[2019-10-15 03:00:02,524 INFO  L199        IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs
[2019-10-15 03:00:02,580 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:02,872 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:03,317 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:03,738 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:03,839 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:03,851 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:03,895 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:04,544 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:04,558 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:04,655 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:04,665 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:04,759 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:04,771 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:04,872 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:04,882 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:04,965 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:04,976 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:05,054 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:05,062 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:05,226 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:05,241 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:05,333 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:05,343 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:05,495 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:05,506 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:05,617 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:05,626 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:05,812 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:05,823 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:06,059 INFO  L199        IcfgInterpreter]: Interpreting procedure dll_get_data_at with input of size 26 for LOIs
[2019-10-15 03:00:06,077 INFO  L199        IcfgInterpreter]: Interpreting procedure dll_create with input of size 33 for LOIs
[2019-10-15 03:00:07,943 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:07,961 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:08,300 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:09,316 INFO  L199        IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs
[2019-10-15 03:00:09,324 INFO  L199        IcfgInterpreter]: Interpreting procedure dll_update_at with input of size 57 for LOIs
[2019-10-15 03:00:09,358 INFO  L183        IcfgInterpreter]: Interpretation finished
[2019-10-15 03:00:10,299 WARN  L191               SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41
[2019-10-15 03:00:10,514 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences.
[2019-10-15 03:00:10,515 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [6, 6, 6] total 23
[2019-10-15 03:00:10,515 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658074371]
[2019-10-15 03:00:10,516 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 17 states
[2019-10-15 03:00:10,516 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-15 03:00:10,516 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2019-10-15 03:00:10,517 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506
[2019-10-15 03:00:10,517 INFO  L87              Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 17 states.
[2019-10-15 03:00:11,231 WARN  L191               SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47
[2019-10-15 03:00:11,461 WARN  L191               SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63
[2019-10-15 03:00:11,706 WARN  L191               SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36
[2019-10-15 03:00:11,969 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-15 03:00:11,969 INFO  L93              Difference]: Finished difference Result 47 states and 55 transitions.
[2019-10-15 03:00:11,969 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2019-10-15 03:00:11,970 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 28
[2019-10-15 03:00:11,970 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-15 03:00:11,971 INFO  L225             Difference]: With dead ends: 47
[2019-10-15 03:00:11,972 INFO  L226             Difference]: Without dead ends: 38
[2019-10-15 03:00:11,973 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 62 SyntacticMatches, 7 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=176, Invalid=1156, Unknown=0, NotChecked=0, Total=1332
[2019-10-15 03:00:11,973 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 38 states.
[2019-10-15 03:00:11,980 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36.
[2019-10-15 03:00:11,981 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 36 states.
[2019-10-15 03:00:11,982 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions.
[2019-10-15 03:00:11,982 INFO  L78                 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 28
[2019-10-15 03:00:11,982 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-15 03:00:11,982 INFO  L462      AbstractCegarLoop]: Abstraction has 36 states and 42 transitions.
[2019-10-15 03:00:11,983 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2019-10-15 03:00:11,983 INFO  L276                IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions.
[2019-10-15 03:00:11,984 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2019-10-15 03:00:11,984 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-15 03:00:11,984 INFO  L380         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-15 03:00:12,188 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-15 03:00:12,189 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-15 03:00:12,190 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-15 03:00:12,190 INFO  L82        PathProgramCache]: Analyzing trace with hash -275507159, now seen corresponding path program 1 times
[2019-10-15 03:00:12,190 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-15 03:00:12,191 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878943540]
[2019-10-15 03:00:12,191 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:00:12,191 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:00:12,191 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-15 03:00:12,232 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 03:00:12,306 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-15 03:00:12,306 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878943540]
[2019-10-15 03:00:12,306 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421516375]
[2019-10-15 03:00:12,306 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-15 03:00:12,488 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 03:00:12,489 INFO  L256         TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core
[2019-10-15 03:00:12,491 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-15 03:00:12,532 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2019-10-15 03:00:12,532 INFO  L321         TraceCheckSpWp]: Computing backward predicates...
[2019-10-15 03:00:12,617 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2019-10-15 03:00:12,617 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1299024670]
[2019-10-15 03:00:12,619 INFO  L162        IcfgInterpreter]: Started Sifa with 27 locations of interest
[2019-10-15 03:00:12,620 INFO  L169        IcfgInterpreter]: Building call graph
[2019-10-15 03:00:12,620 INFO  L174        IcfgInterpreter]: Initial procedures are [ULTIMATE.start]
[2019-10-15 03:00:12,620 INFO  L179        IcfgInterpreter]: Starting interpretation
[2019-10-15 03:00:12,621 INFO  L199        IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs
[2019-10-15 03:00:12,641 INFO  L199        IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs
[2019-10-15 03:00:12,679 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:12,896 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:13,095 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:13,368 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:13,511 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:13,520 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:13,591 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:17,105 INFO  L199        IcfgInterpreter]: Interpreting procedure dll_get_data_at with input of size 17 for LOIs
[2019-10-15 03:00:17,116 INFO  L199        IcfgInterpreter]: Interpreting procedure dll_create with input of size 33 for LOIs
[2019-10-15 03:00:18,054 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:18,117 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:18,125 WARN  L225             Elim1Store]: Array PQE input equivalent to false
[2019-10-15 03:00:19,062 INFO  L199        IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs
[2019-10-15 03:00:19,065 INFO  L199        IcfgInterpreter]: Interpreting procedure dll_update_at with input of size 33 for LOIs
[2019-10-15 03:00:19,137 INFO  L183        IcfgInterpreter]: Interpretation finished
[2019-10-15 03:00:19,277 WARN  L191               SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38
[2019-10-15 03:00:20,268 WARN  L191               SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51
[2019-10-15 03:00:20,632 WARN  L191               SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 69
[2019-10-15 03:00:21,519 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences.
[2019-10-15 03:00:21,520 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6, 24] total 34
[2019-10-15 03:00:21,520 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158123864]
[2019-10-15 03:00:21,521 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 35 states
[2019-10-15 03:00:21,521 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-15 03:00:21,522 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2019-10-15 03:00:21,522 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1062, Unknown=0, NotChecked=0, Total=1190
[2019-10-15 03:00:21,522 INFO  L87              Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 35 states.
[2019-10-15 03:00:22,784 WARN  L191               SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65
[2019-10-15 03:00:23,017 WARN  L191               SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67
[2019-10-15 03:00:23,192 WARN  L191               SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 77
[2019-10-15 03:00:23,406 WARN  L191               SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68
[2019-10-15 03:00:24,468 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-15 03:00:24,468 INFO  L93              Difference]: Finished difference Result 81 states and 98 transitions.
[2019-10-15 03:00:24,470 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. 
[2019-10-15 03:00:24,471 INFO  L78                 Accepts]: Start accepts. Automaton has 35 states. Word has length 29
[2019-10-15 03:00:24,471 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-15 03:00:24,473 INFO  L225             Difference]: With dead ends: 81
[2019-10-15 03:00:24,474 INFO  L226             Difference]: Without dead ends: 56
[2019-10-15 03:00:24,476 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 56 SyntacticMatches, 4 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=392, Invalid=3514, Unknown=0, NotChecked=0, Total=3906
[2019-10-15 03:00:24,476 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 56 states.
[2019-10-15 03:00:24,487 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 46.
[2019-10-15 03:00:24,487 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 46 states.
[2019-10-15 03:00:24,488 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions.
[2019-10-15 03:00:24,489 INFO  L78                 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 29
[2019-10-15 03:00:24,489 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-15 03:00:24,489 INFO  L462      AbstractCegarLoop]: Abstraction has 46 states and 53 transitions.
[2019-10-15 03:00:24,489 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 35 states.
[2019-10-15 03:00:24,489 INFO  L276                IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions.
[2019-10-15 03:00:24,491 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2019-10-15 03:00:24,492 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-15 03:00:24,492 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-15 03:00:24,702 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-15 03:00:24,703 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-15 03:00:24,703 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-15 03:00:24,703 INFO  L82        PathProgramCache]: Analyzing trace with hash -1341099098, now seen corresponding path program 2 times
[2019-10-15 03:00:24,703 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-15 03:00:24,703 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044772]
[2019-10-15 03:00:24,704 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:00:24,704 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:00:24,704 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-15 03:00:24,778 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 03:00:25,667 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-15 03:00:25,667 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044772]
[2019-10-15 03:00:25,667 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201869932]
[2019-10-15 03:00:25,668 INFO  L92    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-15 03:00:25,926 INFO  L249   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2019-10-15 03:00:25,927 INFO  L250   tOrderPrioritization]: Conjunction of SSA is unsat
[2019-10-15 03:00:25,929 INFO  L256         TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 89 conjunts are in the unsatisfiable core
[2019-10-15 03:00:25,937 INFO  L279         TraceCheckSpWp]: Computing forward predicates...