/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_NONE.epf -i ../../../trunk/examples/svcomp/recursive/recHanoi03-2.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-11 00:10:26,328 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-11 00:10:26,329 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-11 00:10:26,370 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-11 00:10:26,370 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-11 00:10:26,373 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-11 00:10:26,375 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2022-01-11 00:10:26,386 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-11 00:10:26,386 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-11 00:10:26,387 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-11 00:10:26,388 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-11 00:10:26,390 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-11 00:10:26,391 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-11 00:10:26,391 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-11 00:10:26,393 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-11 00:10:26,397 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-11 00:10:26,398 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-11 00:10:26,398 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-11 00:10:26,400 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-11 00:10:26,400 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-11 00:10:26,404 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-11 00:10:26,404 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-11 00:10:26,404 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-11 00:10:26,405 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-11 00:10:26,405 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-11 00:10:26,405 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-11 00:10:26,406 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-11 00:10:26,406 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-11 00:10:26,406 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-11 00:10:26,407 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-11 00:10:26,407 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-11 00:10:26,407 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-11 00:10:26,408 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
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[2022-01-11 00:10:26,408 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2022-01-11 00:10:26,409 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-11 00:10:26,410 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf
[2022-01-11 00:10:26,423 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-11 00:10:26,423 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-11 00:10:26,423 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-11 00:10:26,423 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-11 00:10:26,424 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-11 00:10:26,424 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-11 00:10:26,424 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-11 00:10:26,424 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-11 00:10:26,424 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-11 00:10:26,424 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-11 00:10:26,424 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-11 00:10:26,425 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-11 00:10:26,425 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-11 00:10:26,425 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-11 00:10:26,425 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-11 00:10:26,425 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-11 00:10:26,425 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-11 00:10:26,425 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-11 00:10:26,425 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-11 00:10:26,425 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-11 00:10:26,425 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-11 00:10:26,425 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-11 00:10:26,426 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-11 00:10:26,426 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-11 00:10:26,426 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-11 00:10:26,426 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-11 00:10:26,426 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-11 00:10:26,426 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-11 00:10:26,426 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-11 00:10:26,426 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-11 00:10:26,426 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-11 00:10:26,426 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-11 00:10:26,427 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-11 00:10:26,427 INFO  L138        SettingsManager]:  * TransformationType=BV_TO_INT_NONE
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-11 00:10:26,599 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-11 00:10:26,617 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-11 00:10:26,620 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-11 00:10:26,621 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-11 00:10:26,621 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-11 00:10:26,622 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi03-2.c
[2022-01-11 00:10:26,667 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b7a3c7f6/9b5c47ed723e4f04beb31978939c880b/FLAG0bfb79682
[2022-01-11 00:10:27,015 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-11 00:10:27,016 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/recHanoi03-2.c
[2022-01-11 00:10:27,024 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b7a3c7f6/9b5c47ed723e4f04beb31978939c880b/FLAG0bfb79682
[2022-01-11 00:10:27,038 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b7a3c7f6/9b5c47ed723e4f04beb31978939c880b
[2022-01-11 00:10:27,040 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-11 00:10:27,041 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-11 00:10:27,045 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-11 00:10:27,045 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-11 00:10:27,048 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-11 00:10:27,048 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:10:27" (1/1) ...
[2022-01-11 00:10:27,049 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e7f45b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:27, skipping insertion in model container
[2022-01-11 00:10:27,049 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:10:27" (1/1) ...
[2022-01-11 00:10:27,054 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-11 00:10:27,062 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-11 00:10:27,211 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/recHanoi03-2.c[769,782]
[2022-01-11 00:10:27,215 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-11 00:10:27,232 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-11 00:10:27,247 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/recHanoi03-2.c[769,782]
[2022-01-11 00:10:27,248 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-11 00:10:27,258 INFO  L208         MainTranslator]: Completed translation
[2022-01-11 00:10:27,258 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:27 WrapperNode
[2022-01-11 00:10:27,258 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-11 00:10:27,259 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-11 00:10:27,260 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-11 00:10:27,260 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-11 00:10:27,285 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:27" (1/1) ...
[2022-01-11 00:10:27,291 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:27" (1/1) ...
[2022-01-11 00:10:27,302 INFO  L137                Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24
[2022-01-11 00:10:27,303 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-11 00:10:27,308 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-11 00:10:27,308 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-11 00:10:27,308 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-11 00:10:27,313 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:27" (1/1) ...
[2022-01-11 00:10:27,313 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:27" (1/1) ...
[2022-01-11 00:10:27,322 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:27" (1/1) ...
[2022-01-11 00:10:27,322 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:27" (1/1) ...
[2022-01-11 00:10:27,325 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:27" (1/1) ...
[2022-01-11 00:10:27,329 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:27" (1/1) ...
[2022-01-11 00:10:27,333 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:27" (1/1) ...
[2022-01-11 00:10:27,335 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-11 00:10:27,336 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-11 00:10:27,336 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-11 00:10:27,336 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-11 00:10:27,337 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:27" (1/1) ...
[2022-01-11 00:10:27,341 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-11 00:10:27,349 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 00:10:27,371 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)
[2022-01-11 00:10:27,420 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
[2022-01-11 00:10:27,444 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-11 00:10:27,444 INFO  L130     BoogieDeclarations]: Found specification of procedure hanoi
[2022-01-11 00:10:27,444 INFO  L138     BoogieDeclarations]: Found implementation of procedure hanoi
[2022-01-11 00:10:27,444 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-11 00:10:27,444 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-11 00:10:27,445 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-11 00:10:27,487 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-11 00:10:27,488 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-11 00:10:27,571 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-11 00:10:27,574 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-11 00:10:27,574 INFO  L299             CfgBuilder]: Removed 0 assume(true) statements.
[2022-01-11 00:10:27,575 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:10:27 BoogieIcfgContainer
[2022-01-11 00:10:27,576 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-11 00:10:27,576 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-11 00:10:27,576 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-11 00:10:27,577 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-11 00:10:27,579 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:10:27" (1/1) ...
[2022-01-11 00:10:27,617 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:10:27 BasicIcfg
[2022-01-11 00:10:27,617 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-11 00:10:27,618 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-11 00:10:27,618 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-11 00:10:27,620 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-11 00:10:27,620 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:10:27" (1/4) ...
[2022-01-11 00:10:27,621 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44dd7664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:10:27, skipping insertion in model container
[2022-01-11 00:10:27,621 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:10:27" (2/4) ...
[2022-01-11 00:10:27,621 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44dd7664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:10:27, skipping insertion in model container
[2022-01-11 00:10:27,621 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:10:27" (3/4) ...
[2022-01-11 00:10:27,621 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44dd7664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:10:27, skipping insertion in model container
[2022-01-11 00:10:27,621 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:10:27" (4/4) ...
[2022-01-11 00:10:27,622 INFO  L111   eAbstractionObserver]: Analyzing ICFG recHanoi03-2.cTransformedIcfg
[2022-01-11 00:10:27,625 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-11 00:10:27,625 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-11 00:10:27,654 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-11 00:10:27,659 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
[2022-01-11 00:10:27,659 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-11 00:10:27,668 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-11 00:10:27,671 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-01-11 00:10:27,671 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 00:10:27,671 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 00:10:27,672 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 00:10:27,675 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 00:10:27,675 INFO  L85        PathProgramCache]: Analyzing trace with hash -1230283936, now seen corresponding path program 1 times
[2022-01-11 00:10:27,680 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 00:10:27,681 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419638157]
[2022-01-11 00:10:27,681 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 00:10:27,681 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 00:10:27,777 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 00:10:27,919 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2022-01-11 00:10:27,927 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 00:10:27,985 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 00:10:27,985 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 00:10:27,985 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419638157]
[2022-01-11 00:10:27,986 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419638157] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-11 00:10:27,986 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-11 00:10:27,986 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2022-01-11 00:10:27,987 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950646080]
[2022-01-11 00:10:27,988 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-11 00:10:27,990 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-01-11 00:10:27,990 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 00:10:28,015 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-01-11 00:10:28,016 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2022-01-11 00:10:28,018 INFO  L87              Difference]: Start difference. First operand  has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand  has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-11 00:10:28,145 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 00:10:28,145 INFO  L93              Difference]: Finished difference Result 32 states and 34 transitions.
[2022-01-11 00:10:28,146 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2022-01-11 00:10:28,147 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11
[2022-01-11 00:10:28,148 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 00:10:28,152 INFO  L225             Difference]: With dead ends: 32
[2022-01-11 00:10:28,152 INFO  L226             Difference]: Without dead ends: 16
[2022-01-11 00:10:28,154 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2022-01-11 00:10:28,158 INFO  L933         BasicCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-11 00:10:28,159 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 60 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-11 00:10:28,170 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16 states.
[2022-01-11 00:10:28,186 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16.
[2022-01-11 00:10:28,187 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 12 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2022-01-11 00:10:28,188 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions.
[2022-01-11 00:10:28,189 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11
[2022-01-11 00:10:28,189 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 00:10:28,190 INFO  L470      AbstractCegarLoop]: Abstraction has 16 states and 17 transitions.
[2022-01-11 00:10:28,191 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-11 00:10:28,191 INFO  L276                IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions.
[2022-01-11 00:10:28,192 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2022-01-11 00:10:28,192 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 00:10:28,192 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 00:10:28,193 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-11 00:10:28,193 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 00:10:28,196 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 00:10:28,196 INFO  L85        PathProgramCache]: Analyzing trace with hash 1313180132, now seen corresponding path program 1 times
[2022-01-11 00:10:28,196 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 00:10:28,196 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523173403]
[2022-01-11 00:10:28,197 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 00:10:28,197 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 00:10:28,286 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 00:10:28,378 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2022-01-11 00:10:28,404 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 00:10:28,523 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2022-01-11 00:10:28,543 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 00:10:28,583 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2022-01-11 00:10:28,584 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 00:10:28,584 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523173403]
[2022-01-11 00:10:28,584 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523173403] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-11 00:10:28,585 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843157838]
[2022-01-11 00:10:28,585 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 00:10:28,585 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 00:10:28,586 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 00:10:28,587 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)
[2022-01-11 00:10:28,588 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-01-11 00:10:28,639 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 00:10:28,642 INFO  L263         TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 25 conjunts are in the unsatisfiable core
[2022-01-11 00:10:28,646 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-11 00:10:29,214 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-01-11 00:10:29,214 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-11 00:10:29,856 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-01-11 00:10:29,856 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [843157838] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-11 00:10:29,856 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-11 00:10:29,856 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 23
[2022-01-11 00:10:29,857 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350714999]
[2022-01-11 00:10:29,857 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-11 00:10:29,857 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2022-01-11 00:10:29,857 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 00:10:29,858 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2022-01-11 00:10:29,858 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506
[2022-01-11 00:10:29,859 INFO  L87              Difference]: Start difference. First operand 16 states and 17 transitions. Second operand  has 23 states, 20 states have (on average 1.45) internal successors, (29), 17 states have internal predecessors, (29), 6 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2022-01-11 00:10:30,038 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 00:10:30,038 INFO  L93              Difference]: Finished difference Result 26 states and 28 transitions.
[2022-01-11 00:10:30,039 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2022-01-11 00:10:30,040 INFO  L78                 Accepts]: Start accepts. Automaton has  has 23 states, 20 states have (on average 1.45) internal successors, (29), 17 states have internal predecessors, (29), 6 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 17
[2022-01-11 00:10:30,040 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 00:10:30,040 INFO  L225             Difference]: With dead ends: 26
[2022-01-11 00:10:30,040 INFO  L226             Difference]: Without dead ends: 22
[2022-01-11 00:10:30,041 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650
[2022-01-11 00:10:30,042 INFO  L933         BasicCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-11 00:10:30,042 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 99 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 90 Invalid, 0 Unknown, 4 Unchecked, 0.1s Time]
[2022-01-11 00:10:30,042 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2022-01-11 00:10:30,046 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19.
[2022-01-11 00:10:30,046 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 19 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 14 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4)
[2022-01-11 00:10:30,047 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions.
[2022-01-11 00:10:30,047 INFO  L78                 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 17
[2022-01-11 00:10:30,047 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 00:10:30,047 INFO  L470      AbstractCegarLoop]: Abstraction has 19 states and 20 transitions.
[2022-01-11 00:10:30,048 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 23 states, 20 states have (on average 1.45) internal successors, (29), 17 states have internal predecessors, (29), 6 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2022-01-11 00:10:30,048 INFO  L276                IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions.
[2022-01-11 00:10:30,048 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2022-01-11 00:10:30,048 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 00:10:30,048 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 00:10:30,076 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-01-11 00:10:30,259 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 00:10:30,260 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 00:10:30,260 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 00:10:30,260 INFO  L85        PathProgramCache]: Analyzing trace with hash 336561440, now seen corresponding path program 2 times
[2022-01-11 00:10:30,260 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 00:10:30,260 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151890327]
[2022-01-11 00:10:30,261 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 00:10:30,261 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 00:10:30,279 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 00:10:30,333 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2022-01-11 00:10:30,354 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 00:10:30,455 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2022-01-11 00:10:30,468 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 00:10:30,585 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2022-01-11 00:10:30,589 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 00:10:30,623 INFO  L134       CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2022-01-11 00:10:30,623 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 00:10:30,623 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151890327]
[2022-01-11 00:10:30,624 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151890327] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-11 00:10:30,626 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396626842]
[2022-01-11 00:10:30,626 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-01-11 00:10:30,626 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 00:10:30,626 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 00:10:30,648 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)
[2022-01-11 00:10:30,649 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-01-11 00:10:30,690 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-01-11 00:10:30,690 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-11 00:10:30,691 INFO  L263         TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 32 conjunts are in the unsatisfiable core
[2022-01-11 00:10:30,692 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-11 00:10:31,450 INFO  L134       CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2022-01-11 00:10:31,451 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-11 00:10:37,193 INFO  L134       CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2022-01-11 00:10:37,194 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396626842] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-11 00:10:37,194 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-11 00:10:37,194 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 13] total 27
[2022-01-11 00:10:37,194 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910041828]
[2022-01-11 00:10:37,194 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-11 00:10:37,194 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 27 states
[2022-01-11 00:10:37,194 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 00:10:37,195 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants.
[2022-01-11 00:10:37,195 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=616, Unknown=0, NotChecked=0, Total=702
[2022-01-11 00:10:37,196 INFO  L87              Difference]: Start difference. First operand 19 states and 20 transitions. Second operand  has 27 states, 25 states have (on average 1.36) internal successors, (34), 19 states have internal predecessors, (34), 5 states have call successors, (5), 1 states have call predecessors, (5), 8 states have return successors, (8), 8 states have call predecessors, (8), 5 states have call successors, (8)
[2022-01-11 00:10:37,641 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 00:10:37,641 INFO  L93              Difference]: Finished difference Result 29 states and 31 transitions.
[2022-01-11 00:10:37,642 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2022-01-11 00:10:37,642 INFO  L78                 Accepts]: Start accepts. Automaton has  has 27 states, 25 states have (on average 1.36) internal successors, (34), 19 states have internal predecessors, (34), 5 states have call successors, (5), 1 states have call predecessors, (5), 8 states have return successors, (8), 8 states have call predecessors, (8), 5 states have call successors, (8) Word has length 23
[2022-01-11 00:10:37,643 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 00:10:37,643 INFO  L225             Difference]: With dead ends: 29
[2022-01-11 00:10:37,643 INFO  L226             Difference]: Without dead ends: 25
[2022-01-11 00:10:37,644 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 29 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870
[2022-01-11 00:10:37,644 INFO  L933         BasicCegarLoop]: 11 mSDtfsCounter, 18 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-11 00:10:37,645 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 115 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 86 Invalid, 0 Unknown, 25 Unchecked, 0.1s Time]
[2022-01-11 00:10:37,645 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2022-01-11 00:10:37,647 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22.
[2022-01-11 00:10:37,648 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 22 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 16 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5)
[2022-01-11 00:10:37,648 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions.
[2022-01-11 00:10:37,648 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 23
[2022-01-11 00:10:37,648 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 00:10:37,648 INFO  L470      AbstractCegarLoop]: Abstraction has 22 states and 23 transitions.
[2022-01-11 00:10:37,649 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 27 states, 25 states have (on average 1.36) internal successors, (34), 19 states have internal predecessors, (34), 5 states have call successors, (5), 1 states have call predecessors, (5), 8 states have return successors, (8), 8 states have call predecessors, (8), 5 states have call successors, (8)
[2022-01-11 00:10:37,649 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions.
[2022-01-11 00:10:37,649 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2022-01-11 00:10:37,649 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 00:10:37,650 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 00:10:37,668 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-01-11 00:10:37,850 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,SelfDestructingSolverStorable2
[2022-01-11 00:10:37,850 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 00:10:37,851 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 00:10:37,851 INFO  L85        PathProgramCache]: Analyzing trace with hash 790276260, now seen corresponding path program 3 times
[2022-01-11 00:10:37,851 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 00:10:37,851 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844269347]
[2022-01-11 00:10:37,851 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 00:10:37,851 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 00:10:37,880 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 00:10:37,950 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2022-01-11 00:10:37,959 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 00:10:38,018 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2022-01-11 00:10:38,026 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 00:10:38,136 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2022-01-11 00:10:38,142 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 00:10:38,245 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2022-01-11 00:10:38,247 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 00:10:38,274 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2022-01-11 00:10:38,274 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 00:10:38,274 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844269347]
[2022-01-11 00:10:38,275 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844269347] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-11 00:10:38,275 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993136889]
[2022-01-11 00:10:38,275 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-01-11 00:10:38,275 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 00:10:38,275 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 00:10:38,279 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)
[2022-01-11 00:10:38,279 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-01-11 00:10:38,341 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2022-01-11 00:10:38,341 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-11 00:10:38,342 INFO  L263         TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 48 conjunts are in the unsatisfiable core
[2022-01-11 00:10:38,344 INFO  L286         TraceCheckSpWp]: Computing forward predicates...