/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/loop-acceleration/simple_1-1.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 14:23:25,763 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 14:23:25,764 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 14:23:25,806 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 14:23:25,806 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 14:23:25,807 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 14:23:25,808 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-10 14:23:25,809 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-10 14:23:25,811 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-10 14:23:25,811 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-01-10 14:23:25,813 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 14:23:25,813 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 14:23:25,814 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 14:23:25,815 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 14:23:25,818 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 14:23:25,818 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 14:23:25,831 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 14:23:25,844 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 14:23:25,846 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 14:23:25,847 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 14:23:25,849 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 14:23:25,851 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 14:23:25,852 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 14:23:25,856 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 14:23:25,856 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 14:23:25,856 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 14:23:25,857 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 14:23:25,857 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 14:23:25,858 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 14:23:25,858 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 14:23:25,859 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 14:23:25,859 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 14:23:25,860 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 14:23:25,861 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 14:23:25,861 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 14:23:25,861 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 14:23:25,862 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 14:23:25,862 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-10 14:23:25,862 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-10 14:23:25,863 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 14:23:25,871 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf
[2022-01-10 14:23:25,890 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 14:23:25,891 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 14:23:25,891 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 14:23:25,891 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 14:23:25,892 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 14:23:25,892 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 14:23:25,892 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 14:23:25,892 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 14:23:25,892 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 14:23:25,893 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 14:23:25,893 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 14:23:25,893 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 14:23:25,893 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 14:23:25,893 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 14:23:25,893 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 14:23:25,893 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 14:23:25,893 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 14:23:25,894 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 14:23:25,894 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 14:23:25,894 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 14:23:25,894 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 14:23:25,894 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 14:23:25,894 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 14:23:25,894 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 14:23:25,894 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 14:23:25,895 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-10 14:23:25,895 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-10 14:23:25,895 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 14:23:25,895 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 14:23:25,895 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 14:23:25,895 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-10 14:23:25,895 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 14:23:25,896 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-10 14:23:25,896 INFO  L138        SettingsManager]:  * TransformationType=BV_TO_INT_LAZY
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 14:23:26,109 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 14:23:26,132 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 14:23:26,135 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 14:23:26,136 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 14:23:26,136 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 14:23:26,137 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_1-1.c
[2022-01-10 14:23:26,195 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d03d019e9/a9d126c9e3364fd28306eaa2f4b0cea6/FLAGaaf1bb897
[2022-01-10 14:23:26,568 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 14:23:26,569 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_1-1.c
[2022-01-10 14:23:26,577 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d03d019e9/a9d126c9e3364fd28306eaa2f4b0cea6/FLAGaaf1bb897
[2022-01-10 14:23:26,591 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d03d019e9/a9d126c9e3364fd28306eaa2f4b0cea6
[2022-01-10 14:23:26,593 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 14:23:26,596 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-10 14:23:26,599 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 14:23:26,599 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 14:23:26,603 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 14:23:26,603 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:23:26" (1/1) ...
[2022-01-10 14:23:26,604 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3db42700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:23:26, skipping insertion in model container
[2022-01-10 14:23:26,604 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:23:26" (1/1) ...
[2022-01-10 14:23:26,610 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 14:23:26,621 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 14:23:26,785 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_1-1.c[322,335]
[2022-01-10 14:23:26,802 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 14:23:26,824 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 14:23:26,835 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_1-1.c[322,335]
[2022-01-10 14:23:26,840 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 14:23:26,852 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 14:23:26,852 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:23:26 WrapperNode
[2022-01-10 14:23:26,852 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 14:23:26,853 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 14:23:26,853 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 14:23:26,853 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 14:23:26,859 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:23:26" (1/1) ...
[2022-01-10 14:23:26,866 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:23:26" (1/1) ...
[2022-01-10 14:23:26,878 INFO  L137                Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 23
[2022-01-10 14:23:26,878 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 14:23:26,879 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 14:23:26,879 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 14:23:26,879 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 14:23:26,885 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:23:26" (1/1) ...
[2022-01-10 14:23:26,885 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:23:26" (1/1) ...
[2022-01-10 14:23:26,886 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:23:26" (1/1) ...
[2022-01-10 14:23:26,886 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:23:26" (1/1) ...
[2022-01-10 14:23:26,889 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:23:26" (1/1) ...
[2022-01-10 14:23:26,893 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:23:26" (1/1) ...
[2022-01-10 14:23:26,898 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:23:26" (1/1) ...
[2022-01-10 14:23:26,899 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 14:23:26,900 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 14:23:26,900 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 14:23:26,901 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 14:23:26,902 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:23:26" (1/1) ...
[2022-01-10 14:23:26,907 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 14:23:26,916 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 14:23:26,929 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-01-10 14:23:26,941 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-01-10 14:23:26,971 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 14:23:26,971 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 14:23:26,971 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 14:23:26,971 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 14:23:27,022 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 14:23:27,023 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 14:23:27,102 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 14:23:27,106 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 14:23:27,106 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-10 14:23:27,108 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:23:27 BoogieIcfgContainer
[2022-01-10 14:23:27,108 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 14:23:27,108 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-10 14:23:27,109 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-10 14:23:27,110 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-10 14:23:27,112 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:23:27" (1/1) ...
[2022-01-10 14:23:27,159 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:23:27 BasicIcfg
[2022-01-10 14:23:27,160 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-10 14:23:27,161 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 14:23:27,161 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 14:23:27,163 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 14:23:27,163 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:23:26" (1/4) ...
[2022-01-10 14:23:27,164 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0a8f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:23:27, skipping insertion in model container
[2022-01-10 14:23:27,164 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:23:26" (2/4) ...
[2022-01-10 14:23:27,164 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0a8f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:23:27, skipping insertion in model container
[2022-01-10 14:23:27,164 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:23:27" (3/4) ...
[2022-01-10 14:23:27,165 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0a8f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 02:23:27, skipping insertion in model container
[2022-01-10 14:23:27,165 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:23:27" (4/4) ...
[2022-01-10 14:23:27,165 INFO  L111   eAbstractionObserver]: Analyzing ICFG simple_1-1.cTransformedIcfg
[2022-01-10 14:23:27,169 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 14:23:27,169 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 14:23:27,208 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 14:23:27,216 INFO  L339      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2022-01-10 14:23:27,216 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 14:23:27,226 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 14:23:27,230 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2022-01-10 14:23:27,230 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 14:23:27,230 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2022-01-10 14:23:27,231 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 14:23:27,235 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 14:23:27,236 INFO  L85        PathProgramCache]: Analyzing trace with hash 1775995463, now seen corresponding path program 1 times
[2022-01-10 14:23:27,243 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 14:23:27,244 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445753492]
[2022-01-10 14:23:27,244 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 14:23:27,245 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 14:23:27,344 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 14:23:27,414 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 14:23:27,414 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 14:23:27,415 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445753492]
[2022-01-10 14:23:27,415 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445753492] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 14:23:27,415 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 14:23:27,416 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 14:23:27,417 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019132348]
[2022-01-10 14:23:27,417 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 14:23:27,420 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-10 14:23:27,421 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 14:23:27,470 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-10 14:23:27,470 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 14:23:27,472 INFO  L87              Difference]: Start difference. First operand  has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 14:23:27,481 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 14:23:27,482 INFO  L93              Difference]: Finished difference Result 19 states and 21 transitions.
[2022-01-10 14:23:27,482 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-10 14:23:27,483 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6
[2022-01-10 14:23:27,483 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 14:23:27,489 INFO  L225             Difference]: With dead ends: 19
[2022-01-10 14:23:27,489 INFO  L226             Difference]: Without dead ends: 7
[2022-01-10 14:23:27,491 INFO  L932         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
[2022-01-10 14:23:27,493 INFO  L933         BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 14:23:27,494 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 14:23:27,506 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7 states.
[2022-01-10 14:23:27,513 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7.
[2022-01-10 14:23:27,514 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 14:23:27,514 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions.
[2022-01-10 14:23:27,515 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 6
[2022-01-10 14:23:27,515 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 14:23:27,515 INFO  L470      AbstractCegarLoop]: Abstraction has 7 states and 7 transitions.
[2022-01-10 14:23:27,515 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 14:23:27,516 INFO  L276                IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions.
[2022-01-10 14:23:27,516 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2022-01-10 14:23:27,516 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 14:23:27,516 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2022-01-10 14:23:27,516 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-10 14:23:27,516 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 14:23:27,517 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 14:23:27,517 INFO  L85        PathProgramCache]: Analyzing trace with hash 1776025254, now seen corresponding path program 1 times
[2022-01-10 14:23:27,517 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 14:23:27,517 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076969351]
[2022-01-10 14:23:27,518 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 14:23:27,518 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 14:23:27,528 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 14:23:27,559 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 14:23:27,559 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 14:23:27,559 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076969351]
[2022-01-10 14:23:27,560 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076969351] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 14:23:27,560 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 14:23:27,560 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-10 14:23:27,560 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477369685]
[2022-01-10 14:23:27,560 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 14:23:27,561 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 14:23:27,561 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 14:23:27,562 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 14:23:27,562 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 14:23:27,562 INFO  L87              Difference]: Start difference. First operand 7 states and 7 transitions. Second operand  has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 14:23:27,580 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 14:23:27,580 INFO  L93              Difference]: Finished difference Result 12 states and 12 transitions.
[2022-01-10 14:23:27,581 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 14:23:27,581 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6
[2022-01-10 14:23:27,581 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 14:23:27,582 INFO  L225             Difference]: With dead ends: 12
[2022-01-10 14:23:27,582 INFO  L226             Difference]: Without dead ends: 8
[2022-01-10 14:23:27,582 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 14:23:27,584 INFO  L933         BasicCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 14:23:27,584 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 14:23:27,585 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8 states.
[2022-01-10 14:23:27,586 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8.
[2022-01-10 14:23:27,587 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 14:23:27,587 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions.
[2022-01-10 14:23:27,587 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6
[2022-01-10 14:23:27,587 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 14:23:27,587 INFO  L470      AbstractCegarLoop]: Abstraction has 8 states and 8 transitions.
[2022-01-10 14:23:27,588 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 14:23:27,588 INFO  L276                IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions.
[2022-01-10 14:23:27,588 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2022-01-10 14:23:27,588 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 14:23:27,588 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2022-01-10 14:23:27,588 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-01-10 14:23:27,589 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 14:23:27,589 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 14:23:27,589 INFO  L85        PathProgramCache]: Analyzing trace with hash -776929020, now seen corresponding path program 1 times
[2022-01-10 14:23:27,589 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 14:23:27,590 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260240809]
[2022-01-10 14:23:27,590 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 14:23:27,590 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 14:23:27,629 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 14:23:27,689 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 14:23:27,689 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 14:23:27,689 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260240809]
[2022-01-10 14:23:27,689 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260240809] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 14:23:27,690 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213709074]
[2022-01-10 14:23:27,690 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 14:23:27,690 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 14:23:27,690 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 14:23:27,695 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-10 14:23:27,696 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-01-10 14:23:27,761 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 14:23:27,763 INFO  L263         TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core
[2022-01-10 14:23:27,766 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 14:23:27,831 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 14:23:27,831 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 14:23:27,923 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 14:23:27,924 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [213709074] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 14:23:27,924 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-10 14:23:27,924 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7
[2022-01-10 14:23:27,925 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963437461]
[2022-01-10 14:23:27,925 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-10 14:23:27,925 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-01-10 14:23:27,925 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 14:23:27,926 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-01-10 14:23:27,926 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2022-01-10 14:23:27,926 INFO  L87              Difference]: Start difference. First operand 8 states and 8 transitions. Second operand  has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 14:23:27,954 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 14:23:27,954 INFO  L93              Difference]: Finished difference Result 15 states and 17 transitions.
[2022-01-10 14:23:27,955 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-01-10 14:23:27,955 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7
[2022-01-10 14:23:27,955 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 14:23:27,955 INFO  L225             Difference]: With dead ends: 15
[2022-01-10 14:23:27,956 INFO  L226             Difference]: Without dead ends: 11
[2022-01-10 14:23:27,956 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56
[2022-01-10 14:23:27,957 INFO  L933         BasicCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 14:23:27,958 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 14:23:27,959 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11 states.
[2022-01-10 14:23:27,960 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11.
[2022-01-10 14:23:27,961 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 14:23:27,961 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions.
[2022-01-10 14:23:27,961 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7
[2022-01-10 14:23:27,961 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 14:23:27,962 INFO  L470      AbstractCegarLoop]: Abstraction has 11 states and 11 transitions.
[2022-01-10 14:23:27,962 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 14:23:27,962 INFO  L276                IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions.
[2022-01-10 14:23:27,962 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2022-01-10 14:23:27,962 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 14:23:27,963 INFO  L514         BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1]
[2022-01-10 14:23:27,987 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-01-10 14:23:28,178 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 14:23:28,178 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 14:23:28,179 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 14:23:28,179 INFO  L85        PathProgramCache]: Analyzing trace with hash 943236646, now seen corresponding path program 2 times
[2022-01-10 14:23:28,179 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 14:23:28,180 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718623181]
[2022-01-10 14:23:28,180 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 14:23:28,180 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 14:23:28,218 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 14:23:28,310 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 14:23:28,310 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 14:23:28,310 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718623181]
[2022-01-10 14:23:28,311 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718623181] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 14:23:28,314 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352553710]
[2022-01-10 14:23:28,314 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-01-10 14:23:28,314 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 14:23:28,315 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 14:23:28,348 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-10 14:23:28,350 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-01-10 14:23:28,421 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-01-10 14:23:28,421 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 14:23:28,422 INFO  L263         TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 24 conjunts are in the unsatisfiable core
[2022-01-10 14:23:28,423 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 14:23:28,501 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 14:23:28,501 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 14:23:29,283 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 14:23:29,284 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352553710] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 14:23:29,284 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-10 14:23:29,284 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9] total 18
[2022-01-10 14:23:29,285 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811581125]
[2022-01-10 14:23:29,286 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-10 14:23:29,287 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2022-01-10 14:23:29,289 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 14:23:29,290 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2022-01-10 14:23:29,292 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306
[2022-01-10 14:23:29,292 INFO  L87              Difference]: Start difference. First operand 11 states and 11 transitions. Second operand  has 18 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 14:23:30,165 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 14:23:30,165 INFO  L93              Difference]: Finished difference Result 23 states and 28 transitions.
[2022-01-10 14:23:30,165 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2022-01-10 14:23:30,166 INFO  L78                 Accepts]: Start accepts. Automaton has  has 18 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10
[2022-01-10 14:23:30,166 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 14:23:30,166 INFO  L225             Difference]: With dead ends: 23
[2022-01-10 14:23:30,166 INFO  L226             Difference]: Without dead ends: 17
[2022-01-10 14:23:30,167 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=181, Invalid=371, Unknown=0, NotChecked=0, Total=552
[2022-01-10 14:23:30,168 INFO  L933         BasicCegarLoop]: 4 mSDtfsCounter, 33 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-10 14:23:30,169 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 27 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-10 14:23:30,170 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2022-01-10 14:23:30,173 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17.
[2022-01-10 14:23:30,173 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 17 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 14:23:30,174 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions.
[2022-01-10 14:23:30,174 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10
[2022-01-10 14:23:30,174 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 14:23:30,174 INFO  L470      AbstractCegarLoop]: Abstraction has 17 states and 17 transitions.
[2022-01-10 14:23:30,174 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 18 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 14:23:30,175 INFO  L276                IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions.
[2022-01-10 14:23:30,175 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2022-01-10 14:23:30,175 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 14:23:30,175 INFO  L514         BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1]
[2022-01-10 14:23:30,182 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-01-10 14:23:30,379 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3
[2022-01-10 14:23:30,380 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 14:23:30,380 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 14:23:30,380 INFO  L85        PathProgramCache]: Analyzing trace with hash 1265506662, now seen corresponding path program 3 times
[2022-01-10 14:23:30,380 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 14:23:30,381 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214047535]
[2022-01-10 14:23:30,381 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 14:23:30,381 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 14:23:30,419 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 14:23:30,624 INFO  L134       CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 14:23:30,624 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 14:23:30,625 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214047535]
[2022-01-10 14:23:30,625 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214047535] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 14:23:30,625 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461530987]
[2022-01-10 14:23:30,625 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-01-10 14:23:30,625 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 14:23:30,625 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 14:23:30,630 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-10 14:23:30,631 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-01-10 14:23:30,726 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2022-01-10 14:23:30,727 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 14:23:30,728 INFO  L263         TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 44 conjunts are in the unsatisfiable core
[2022-01-10 14:23:30,730 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 14:23:30,913 INFO  L134       CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 14:23:30,914 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 14:23:33,781 INFO  L134       CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 14:23:33,782 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [461530987] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 14:23:33,782 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-10 14:23:33,782 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 36
[2022-01-10 14:23:33,782 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725617138]
[2022-01-10 14:23:33,782 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-10 14:23:33,783 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 36 states
[2022-01-10 14:23:33,783 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 14:23:33,783 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2022-01-10 14:23:33,784 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260
[2022-01-10 14:23:33,784 INFO  L87              Difference]: Start difference. First operand 17 states and 17 transitions. Second operand  has 36 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 14:23:49,022 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 14:23:49,023 INFO  L93              Difference]: Finished difference Result 35 states and 46 transitions.
[2022-01-10 14:23:49,023 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. 
[2022-01-10 14:23:49,023 INFO  L78                 Accepts]: Start accepts. Automaton has  has 36 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16
[2022-01-10 14:23:49,024 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 14:23:49,024 INFO  L225             Difference]: With dead ends: 35
[2022-01-10 14:23:49,024 INFO  L226             Difference]: Without dead ends: 29
[2022-01-10 14:23:49,025 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=735, Invalid=1521, Unknown=0, NotChecked=0, Total=2256
[2022-01-10 14:23:49,026 INFO  L933         BasicCegarLoop]: 4 mSDtfsCounter, 101 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-10 14:23:49,026 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 44 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-10 14:23:49,027 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2022-01-10 14:23:49,032 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29.
[2022-01-10 14:23:49,032 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 29 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 14:23:49,033 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions.
[2022-01-10 14:23:49,033 INFO  L78                 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 16
[2022-01-10 14:23:49,033 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 14:23:49,033 INFO  L470      AbstractCegarLoop]: Abstraction has 29 states and 29 transitions.
[2022-01-10 14:23:49,033 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 36 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 14:23:49,034 INFO  L276                IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions.
[2022-01-10 14:23:49,034 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2022-01-10 14:23:49,034 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 14:23:49,034 INFO  L514         BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1]
[2022-01-10 14:23:49,042 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2022-01-10 14:23:49,235 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 14:23:49,235 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 14:23:49,236 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 14:23:49,236 INFO  L85        PathProgramCache]: Analyzing trace with hash 1903341542, now seen corresponding path program 4 times
[2022-01-10 14:23:49,236 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 14:23:49,236 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436468177]
[2022-01-10 14:23:49,236 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 14:23:49,237 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 14:23:49,323 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 14:23:49,788 INFO  L134       CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 14:23:49,788 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 14:23:49,788 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436468177]
[2022-01-10 14:23:49,789 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436468177] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 14:23:49,789 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144148990]
[2022-01-10 14:23:49,789 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2022-01-10 14:23:49,789 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 14:23:49,789 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 14:23:49,792 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-10 14:23:49,802 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2022-01-10 14:23:50,005 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2022-01-10 14:23:50,005 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 14:23:50,007 INFO  L263         TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 85 conjunts are in the unsatisfiable core
[2022-01-10 14:23:50,009 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 14:23:50,616 INFO  L134       CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 14:23:50,616 INFO  L328         TraceCheckSpWp]: Computing backward predicates...