/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/array-programs/partial_mod_count_1.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 15:29:36,862 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 15:29:36,863 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 15:29:36,922 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 15:29:36,923 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 15:29:36,925 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 15:29:36,927 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2022-01-10 15:29:36,937 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 15:29:36,937 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 15:29:36,939 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 15:29:36,940 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 15:29:36,940 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 15:29:36,941 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 15:29:36,941 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 15:29:36,942 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 15:29:36,943 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 15:29:36,943 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 15:29:36,946 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 15:29:36,947 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 15:29:36,947 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 15:29:36,949 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 15:29:36,949 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 15:29:36,949 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 15:29:36,949 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 15:29:36,949 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 15:29:36,950 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 15:29:36,950 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 15:29:36,951 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 15:29:36,951 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 15:29:36,951 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 15:29:36,952 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 15:29:36,952 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 15:29:36,952 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 15:29:36,953 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 15:29:36,953 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-10 15:29:36,953 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-10 15:29:36,954 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 15:29:36,959 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 15:29:36,979 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 15:29:36,980 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 15:29:36,980 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 15:29:36,980 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 15:29:36,981 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 15:29:36,981 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 15:29:36,981 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 15:29:36,981 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 15:29:36,981 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 15:29:36,981 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 15:29:36,981 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 15:29:36,981 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 15:29:36,981 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 15:29:36,981 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 15:29:36,981 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 15:29:36,982 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 15:29:36,982 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 15:29:36,982 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 15:29:36,982 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 15:29:36,982 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 15:29:36,982 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 15:29:36,982 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 15:29:36,982 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 15:29:36,982 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 15:29:36,982 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 15:29:36,982 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-10 15:29:36,983 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-10 15:29:36,983 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 15:29:36,983 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 15:29:36,983 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 15:29:36,983 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-10 15:29:36,983 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 15:29:36,984 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-10 15:29:36,984 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 15:29:37,203 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 15:29:37,234 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 15:29:37,236 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 15:29:37,237 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 15:29:37,238 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 15:29:37,239 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-programs/partial_mod_count_1.c
[2022-01-10 15:29:37,290 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95784cb5a/d91111545547423b8dc535f2e513864f/FLAGbc48c6a20
[2022-01-10 15:29:37,636 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 15:29:37,637 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-programs/partial_mod_count_1.c
[2022-01-10 15:29:37,644 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95784cb5a/d91111545547423b8dc535f2e513864f/FLAGbc48c6a20
[2022-01-10 15:29:38,054 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95784cb5a/d91111545547423b8dc535f2e513864f
[2022-01-10 15:29:38,057 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 15:29:38,059 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-10 15:29:38,062 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 15:29:38,062 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 15:29:38,064 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 15:29:38,065 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:29:38" (1/1) ...
[2022-01-10 15:29:38,066 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dbb0c1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:29:38, skipping insertion in model container
[2022-01-10 15:29:38,067 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:29:38" (1/1) ...
[2022-01-10 15:29:38,071 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 15:29:38,080 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 15:29:38,191 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-programs/partial_mod_count_1.c[323,336]
[2022-01-10 15:29:38,226 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 15:29:38,232 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 15:29:38,240 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-programs/partial_mod_count_1.c[323,336]
[2022-01-10 15:29:38,252 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 15:29:38,266 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 15:29:38,267 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:29:38 WrapperNode
[2022-01-10 15:29:38,267 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 15:29:38,267 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 15:29:38,268 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 15:29:38,268 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 15:29:38,272 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:29:38" (1/1) ...
[2022-01-10 15:29:38,279 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:29:38" (1/1) ...
[2022-01-10 15:29:38,295 INFO  L137                Inliner]: procedures = 15, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53
[2022-01-10 15:29:38,296 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 15:29:38,297 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 15:29:38,297 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 15:29:38,297 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 15:29:38,304 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:29:38" (1/1) ...
[2022-01-10 15:29:38,304 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:29:38" (1/1) ...
[2022-01-10 15:29:38,313 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:29:38" (1/1) ...
[2022-01-10 15:29:38,314 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:29:38" (1/1) ...
[2022-01-10 15:29:38,325 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:29:38" (1/1) ...
[2022-01-10 15:29:38,327 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:29:38" (1/1) ...
[2022-01-10 15:29:38,328 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:29:38" (1/1) ...
[2022-01-10 15:29:38,329 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 15:29:38,330 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 15:29:38,330 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 15:29:38,330 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 15:29:38,344 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:29:38" (1/1) ...
[2022-01-10 15:29:38,348 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 15:29:38,356 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 15:29:38,367 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 15:29:38,381 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 15:29:38,403 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 15:29:38,403 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 15:29:38,404 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2022-01-10 15:29:38,404 INFO  L130     BoogieDeclarations]: Found specification of procedure read~intINTTYPE4
[2022-01-10 15:29:38,404 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 15:29:38,404 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 15:29:38,404 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-01-10 15:29:38,404 INFO  L130     BoogieDeclarations]: Found specification of procedure write~intINTTYPE4
[2022-01-10 15:29:38,455 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 15:29:38,456 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 15:29:38,709 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 15:29:38,714 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 15:29:38,714 INFO  L299             CfgBuilder]: Removed 2 assume(true) statements.
[2022-01-10 15:29:38,716 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:29:38 BoogieIcfgContainer
[2022-01-10 15:29:38,716 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 15:29:38,716 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-10 15:29:38,717 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-10 15:29:38,718 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-10 15:29:38,720 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:29:38" (1/1) ...
[2022-01-10 15:29:38,796 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 03:29:38 BasicIcfg
[2022-01-10 15:29:38,797 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-10 15:29:38,798 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 15:29:38,798 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 15:29:38,800 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 15:29:38,800 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 03:29:38" (1/4) ...
[2022-01-10 15:29:38,800 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa17e42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:29:38, skipping insertion in model container
[2022-01-10 15:29:38,800 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:29:38" (2/4) ...
[2022-01-10 15:29:38,801 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa17e42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:29:38, skipping insertion in model container
[2022-01-10 15:29:38,801 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:29:38" (3/4) ...
[2022-01-10 15:29:38,801 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa17e42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 03:29:38, skipping insertion in model container
[2022-01-10 15:29:38,801 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 03:29:38" (4/4) ...
[2022-01-10 15:29:38,802 INFO  L111   eAbstractionObserver]: Analyzing ICFG partial_mod_count_1.cTransformedIcfg
[2022-01-10 15:29:38,805 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 15:29:38,805 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 15:29:38,842 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 15:29:38,846 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 15:29:38,846 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 15:29:38,855 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 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 15:29:38,859 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2022-01-10 15:29:38,859 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 15:29:38,859 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 15:29:38,860 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 15:29:38,864 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 15:29:38,864 INFO  L85        PathProgramCache]: Analyzing trace with hash -328710654, now seen corresponding path program 1 times
[2022-01-10 15:29:38,870 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 15:29:38,871 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682344891]
[2022-01-10 15:29:38,871 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 15:29:38,871 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 15:29:38,951 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 15:29:39,003 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 15:29:39,004 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 15:29:39,004 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682344891]
[2022-01-10 15:29:39,004 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682344891] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 15:29:39,005 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 15:29:39,005 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 15:29:39,006 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107496912]
[2022-01-10 15:29:39,006 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 15:29:39,009 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-10 15:29:39,010 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 15:29:39,032 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-10 15:29:39,033 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 15:29:39,034 INFO  L87              Difference]: Start difference. First operand  has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 15:29:39,045 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 15:29:39,045 INFO  L93              Difference]: Finished difference Result 31 states and 40 transitions.
[2022-01-10 15:29:39,046 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-10 15:29:39,047 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9
[2022-01-10 15:29:39,047 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 15:29:39,052 INFO  L225             Difference]: With dead ends: 31
[2022-01-10 15:29:39,052 INFO  L226             Difference]: Without dead ends: 14
[2022-01-10 15:29:39,054 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 15:29:39,056 INFO  L933         BasicCegarLoop]: 21 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, 21 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 15:29:39,057 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 15:29:39,068 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14 states.
[2022-01-10 15:29:39,075 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14.
[2022-01-10 15:29:39,076 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 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 15:29:39,076 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions.
[2022-01-10 15:29:39,077 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 9
[2022-01-10 15:29:39,077 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 15:29:39,078 INFO  L470      AbstractCegarLoop]: Abstraction has 14 states and 17 transitions.
[2022-01-10 15:29:39,078 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 15:29:39,078 INFO  L276                IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions.
[2022-01-10 15:29:39,078 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2022-01-10 15:29:39,078 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 15:29:39,078 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 15:29:39,079 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-10 15:29:39,079 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 15:29:39,079 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 15:29:39,080 INFO  L85        PathProgramCache]: Analyzing trace with hash 558793027, now seen corresponding path program 1 times
[2022-01-10 15:29:39,080 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 15:29:39,080 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936620911]
[2022-01-10 15:29:39,080 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 15:29:39,080 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 15:29:39,131 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 15:29:39,228 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 15:29:39,229 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 15:29:39,229 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936620911]
[2022-01-10 15:29:39,229 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936620911] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 15:29:39,229 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 15:29:39,229 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-01-10 15:29:39,229 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084058032]
[2022-01-10 15:29:39,230 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 15:29:39,230 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-01-10 15:29:39,231 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 15:29:39,231 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-01-10 15:29:39,231 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2022-01-10 15:29:39,232 INFO  L87              Difference]: Start difference. First operand 14 states and 17 transitions. Second operand  has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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 15:29:41,271 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers []
[2022-01-10 15:29:43,412 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 15:29:43,545 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 15:29:43,546 INFO  L93              Difference]: Finished difference Result 46 states and 56 transitions.
[2022-01-10 15:29:43,546 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-01-10 15:29:43,546 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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 9
[2022-01-10 15:29:43,547 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 15:29:43,548 INFO  L225             Difference]: With dead ends: 46
[2022-01-10 15:29:43,548 INFO  L226             Difference]: Without dead ends: 37
[2022-01-10 15:29:43,549 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2022-01-10 15:29:43,549 INFO  L933         BasicCegarLoop]: 20 mSDtfsCounter, 35 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time
[2022-01-10 15:29:43,550 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 69 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time]
[2022-01-10 15:29:43,550 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2022-01-10 15:29:43,553 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 15.
[2022-01-10 15:29:43,553 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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 15:29:43,554 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions.
[2022-01-10 15:29:43,554 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 9
[2022-01-10 15:29:43,554 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 15:29:43,554 INFO  L470      AbstractCegarLoop]: Abstraction has 15 states and 18 transitions.
[2022-01-10 15:29:43,554 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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 15:29:43,554 INFO  L276                IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions.
[2022-01-10 15:29:43,555 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2022-01-10 15:29:43,555 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 15:29:43,555 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 15:29:43,555 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-01-10 15:29:43,555 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 15:29:43,556 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 15:29:43,556 INFO  L85        PathProgramCache]: Analyzing trace with hash -1158877594, now seen corresponding path program 1 times
[2022-01-10 15:29:43,556 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 15:29:43,556 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602183458]
[2022-01-10 15:29:43,556 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 15:29:43,556 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 15:29:43,594 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 15:29:43,594 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [162571322]
[2022-01-10 15:29:43,594 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 15:29:43,595 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 15:29:43,595 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 15:29:43,596 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 15:29:43,609 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 15:29:43,775 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 15:29:43,777 INFO  L263         TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 12 conjunts are in the unsatisfiable core
[2022-01-10 15:29:43,780 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 15:29:43,861 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 15:29:43,861 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 15:29:44,005 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 15:29:44,006 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 15:29:44,006 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602183458]
[2022-01-10 15:29:44,006 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-10 15:29:44,006 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162571322]
[2022-01-10 15:29:44,006 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [162571322] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 15:29:44,007 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-10 15:29:44,007 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8
[2022-01-10 15:29:44,007 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128871040]
[2022-01-10 15:29:44,007 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-10 15:29:44,007 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2022-01-10 15:29:44,007 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 15:29:44,008 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2022-01-10 15:29:44,008 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2022-01-10 15:29:44,008 INFO  L87              Difference]: Start difference. First operand 15 states and 18 transitions. Second operand  has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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 15:29:46,032 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers []
[2022-01-10 15:29:48,134 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers []
[2022-01-10 15:29:50,354 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 15:29:50,473 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 15:29:50,473 INFO  L93              Difference]: Finished difference Result 37 states and 49 transitions.
[2022-01-10 15:29:50,473 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2022-01-10 15:29:50,473 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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 12
[2022-01-10 15:29:50,474 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 15:29:50,474 INFO  L225             Difference]: With dead ends: 37
[2022-01-10 15:29:50,474 INFO  L226             Difference]: Without dead ends: 28
[2022-01-10 15:29:50,474 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110
[2022-01-10 15:29:50,475 INFO  L933         BasicCegarLoop]: 10 mSDtfsCounter, 32 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time
[2022-01-10 15:29:50,475 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 30 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 51 Invalid, 3 Unknown, 0 Unchecked, 6.3s Time]
[2022-01-10 15:29:50,476 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2022-01-10 15:29:50,479 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27.
[2022-01-10 15:29:50,479 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 27 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 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 15:29:50,479 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions.
[2022-01-10 15:29:50,479 INFO  L78                 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 12
[2022-01-10 15:29:50,479 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 15:29:50,480 INFO  L470      AbstractCegarLoop]: Abstraction has 27 states and 34 transitions.
[2022-01-10 15:29:50,480 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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 15:29:50,480 INFO  L276                IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions.
[2022-01-10 15:29:50,480 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2022-01-10 15:29:50,480 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 15:29:50,480 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 15:29:50,497 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 15:29:50,691 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 15:29:50,691 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 15:29:50,692 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 15:29:50,692 INFO  L85        PathProgramCache]: Analyzing trace with hash 872288582, now seen corresponding path program 2 times
[2022-01-10 15:29:50,692 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 15:29:50,692 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455765956]
[2022-01-10 15:29:50,692 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 15:29:50,692 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 15:29:50,732 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 15:29:50,732 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2049245867]
[2022-01-10 15:29:50,733 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-01-10 15:29:50,733 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 15:29:50,733 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 15:29:50,734 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 15:29:50,735 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 15:29:50,812 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2022-01-10 15:29:50,812 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 15:29:50,814 INFO  L263         TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 15 conjunts are in the unsatisfiable core
[2022-01-10 15:29:50,816 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 15:29:55,689 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2022-01-10 15:29:55,690 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 15:29:55,690 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 15:29:55,690 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455765956]
[2022-01-10 15:29:55,690 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-10 15:29:55,690 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049245867]
[2022-01-10 15:29:55,690 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049245867] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 15:29:55,691 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 15:29:55,691 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-01-10 15:29:55,691 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931932437]
[2022-01-10 15:29:55,691 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 15:29:55,692 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-01-10 15:29:55,692 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 15:29:55,692 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-01-10 15:29:55,692 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2022-01-10 15:29:55,693 INFO  L87              Difference]: Start difference. First operand 27 states and 34 transitions. Second operand  has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 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 15:29:57,737 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers []
[2022-01-10 15:29:59,848 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 15:30:01,925 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 15:30:04,096 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 15:30:06,184 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 15:30:08,260 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 15:30:10,337 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 15:30:10,411 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 15:30:10,412 INFO  L93              Difference]: Finished difference Result 73 states and 90 transitions.
[2022-01-10 15:30:10,412 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2022-01-10 15:30:10,412 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 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 18
[2022-01-10 15:30:10,412 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 15:30:10,413 INFO  L225             Difference]: With dead ends: 73
[2022-01-10 15:30:10,413 INFO  L226             Difference]: Without dead ends: 50
[2022-01-10 15:30:10,413 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110
[2022-01-10 15:30:10,414 INFO  L933         BasicCegarLoop]: 11 mSDtfsCounter, 64 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 14 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time
[2022-01-10 15:30:10,414 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 32 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 53 Invalid, 7 Unknown, 0 Unchecked, 14.7s Time]
[2022-01-10 15:30:10,415 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2022-01-10 15:30:10,420 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 39.
[2022-01-10 15:30:10,420 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 39 states, 38 states have (on average 1.263157894736842) internal successors, (48), 38 states have internal predecessors, (48), 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 15:30:10,421 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions.
[2022-01-10 15:30:10,421 INFO  L78                 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 18
[2022-01-10 15:30:10,421 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 15:30:10,421 INFO  L470      AbstractCegarLoop]: Abstraction has 39 states and 48 transitions.
[2022-01-10 15:30:10,421 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 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 15:30:10,422 INFO  L276                IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions.
[2022-01-10 15:30:10,422 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2022-01-10 15:30:10,422 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 15:30:10,422 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 15:30:10,445 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2022-01-10 15:30:10,638 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 15:30:10,638 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 15:30:10,639 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 15:30:10,639 INFO  L85        PathProgramCache]: Analyzing trace with hash -1915097114, now seen corresponding path program 1 times
[2022-01-10 15:30:10,639 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 15:30:10,639 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657261982]
[2022-01-10 15:30:10,639 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 15:30:10,639 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 15:30:10,666 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 15:30:10,666 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [524262372]
[2022-01-10 15:30:10,666 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 15:30:10,666 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 15:30:10,667 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 15:30:10,674 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 15:30:10,675 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 15:30:10,849 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 15:30:10,851 INFO  L263         TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 10 conjunts are in the unsatisfiable core
[2022-01-10 15:30:10,853 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 15:30:13,533 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2022-01-10 15:30:13,534 INFO  L328         TraceCheckSpWp]: Computing backward predicates...