/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_BITWISE.epf -i ../../../trunk/examples/svcomp/recursive/recHanoi02-2.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 12:30:25,619 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 12:30:25,621 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 12:30:25,668 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 12:30:25,669 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 12:30:25,670 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 12:30:25,672 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-10 12:30:25,675 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-10 12:30:25,677 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-10 12:30:25,681 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-01-10 12:30:25,681 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-01-10 12:30:25,682 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 12:30:25,683 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 12:30:25,684 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 12:30:25,685 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 12:30:25,687 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 12:30:25,687 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 12:30:25,688 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 12:30:25,689 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 12:30:25,693 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 12:30:25,694 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 12:30:25,695 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 12:30:25,697 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 12:30:25,698 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 12:30:25,702 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 12:30:25,702 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 12:30:25,702 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 12:30:25,703 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 12:30:25,703 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 12:30:25,704 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 12:30:25,704 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 12:30:25,705 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 12:30:25,706 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 12:30:25,706 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 12:30:25,707 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 12:30:25,707 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 12:30:25,707 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 12:30:25,708 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 12:30:25,708 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-10 12:30:25,708 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-10 12:30:25,709 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 12:30:25,709 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf
[2022-01-10 12:30:25,733 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 12:30:25,734 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 12:30:25,734 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 12:30:25,734 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 12:30:25,735 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 12:30:25,735 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 12:30:25,735 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 12:30:25,735 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 12:30:25,735 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 12:30:25,735 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 12:30:25,736 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 12:30:25,736 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 12:30:25,736 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 12:30:25,736 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 12:30:25,736 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 12:30:25,736 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 12:30:25,736 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 12:30:25,737 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 12:30:25,737 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 12:30:25,737 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 12:30:25,737 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 12:30:25,737 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 12:30:25,737 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 12:30:25,737 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 12:30:25,737 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 12:30:25,738 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-10 12:30:25,738 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-10 12:30:25,738 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 12:30:25,738 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 12:30:25,738 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 12:30:25,738 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-10 12:30:25,738 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 12:30:25,739 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-10 12:30:25,739 INFO  L138        SettingsManager]:  * TransformationType=BV_TO_INT_BITWISE
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 12:30:25,914 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 12:30:25,930 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 12:30:25,932 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 12:30:25,933 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 12:30:25,935 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 12:30:25,936 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi02-2.c
[2022-01-10 12:30:25,986 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04aad41a6/9b668c9deca943f2a984fc5b009da0b2/FLAG254f7dbab
[2022-01-10 12:30:26,309 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 12:30:26,309 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/recHanoi02-2.c
[2022-01-10 12:30:26,313 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04aad41a6/9b668c9deca943f2a984fc5b009da0b2/FLAG254f7dbab
[2022-01-10 12:30:26,321 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04aad41a6/9b668c9deca943f2a984fc5b009da0b2
[2022-01-10 12:30:26,323 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 12:30:26,325 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-10 12:30:26,327 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 12:30:26,327 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 12:30:26,329 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 12:30:26,330 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:30:26" (1/1) ...
[2022-01-10 12:30:26,330 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30aa6b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:26, skipping insertion in model container
[2022-01-10 12:30:26,330 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:30:26" (1/1) ...
[2022-01-10 12:30:26,334 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 12:30:26,342 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 12:30:26,449 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/recHanoi02-2.c[839,852]
[2022-01-10 12:30:26,450 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 12:30:26,460 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 12:30:26,473 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/recHanoi02-2.c[839,852]
[2022-01-10 12:30:26,473 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 12:30:26,481 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 12:30:26,481 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:26 WrapperNode
[2022-01-10 12:30:26,481 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 12:30:26,482 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 12:30:26,482 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 12:30:26,482 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 12:30:26,496 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:26" (1/1) ...
[2022-01-10 12:30:26,501 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:26" (1/1) ...
[2022-01-10 12:30:26,512 INFO  L137                Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24
[2022-01-10 12:30:26,512 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 12:30:26,513 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 12:30:26,513 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 12:30:26,513 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 12:30:26,517 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:26" (1/1) ...
[2022-01-10 12:30:26,518 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:26" (1/1) ...
[2022-01-10 12:30:26,521 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:26" (1/1) ...
[2022-01-10 12:30:26,522 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:26" (1/1) ...
[2022-01-10 12:30:26,524 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:26" (1/1) ...
[2022-01-10 12:30:26,525 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:26" (1/1) ...
[2022-01-10 12:30:26,538 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:26" (1/1) ...
[2022-01-10 12:30:26,539 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 12:30:26,540 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 12:30:26,540 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 12:30:26,540 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 12:30:26,544 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:26" (1/1) ...
[2022-01-10 12:30:26,548 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 12:30:26,556 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 12:30:26,566 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 12:30:26,570 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 12:30:26,590 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 12:30:26,590 INFO  L130     BoogieDeclarations]: Found specification of procedure hanoi
[2022-01-10 12:30:26,590 INFO  L138     BoogieDeclarations]: Found implementation of procedure hanoi
[2022-01-10 12:30:26,590 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 12:30:26,590 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 12:30:26,590 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 12:30:26,630 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 12:30:26,631 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 12:30:26,695 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 12:30:26,699 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 12:30:26,699 INFO  L299             CfgBuilder]: Removed 0 assume(true) statements.
[2022-01-10 12:30:26,700 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:30:26 BoogieIcfgContainer
[2022-01-10 12:30:26,700 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 12:30:26,701 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-10 12:30:26,701 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-10 12:30:26,702 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-10 12:30:26,703 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:30:26" (1/1) ...
[2022-01-10 12:30:26,739 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:30:26 BasicIcfg
[2022-01-10 12:30:26,739 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-10 12:30:26,740 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 12:30:26,740 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 12:30:26,743 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 12:30:26,743 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:30:26" (1/4) ...
[2022-01-10 12:30:26,743 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@400ba805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:30:26, skipping insertion in model container
[2022-01-10 12:30:26,743 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:30:26" (2/4) ...
[2022-01-10 12:30:26,744 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@400ba805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:30:26, skipping insertion in model container
[2022-01-10 12:30:26,744 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:30:26" (3/4) ...
[2022-01-10 12:30:26,744 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@400ba805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:30:26, skipping insertion in model container
[2022-01-10 12:30:26,744 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:30:26" (4/4) ...
[2022-01-10 12:30:26,745 INFO  L111   eAbstractionObserver]: Analyzing ICFG recHanoi02-2.cTransformedIcfg
[2022-01-10 12:30:26,748 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 12:30:26,748 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 12:30:26,785 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 12:30:26,789 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 12:30:26,789 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 12:30:26,818 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)
[2022-01-10 12:30:26,821 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-01-10 12:30:26,821 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 12:30:26,821 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 12:30:26,822 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 12:30:26,831 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 12:30:26,831 INFO  L85        PathProgramCache]: Analyzing trace with hash -1230283936, now seen corresponding path program 1 times
[2022-01-10 12:30:26,836 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 12:30:26,836 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612377529]
[2022-01-10 12:30:26,837 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 12:30:26,837 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 12:30:26,923 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 12:30:27,055 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2022-01-10 12:30:27,061 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 12:30:27,078 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 12:30:27,079 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 12:30:27,083 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612377529]
[2022-01-10 12:30:27,084 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612377529] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 12:30:27,084 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 12:30:27,084 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-01-10 12:30:27,085 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504086056]
[2022-01-10 12:30:27,086 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 12:30:27,091 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-01-10 12:30:27,091 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 12:30:27,108 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-01-10 12:30:27,109 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-01-10 12:30:27,110 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 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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)
[2022-01-10 12:30:27,148 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 12:30:27,148 INFO  L93              Difference]: Finished difference Result 29 states and 32 transitions.
[2022-01-10 12:30:27,150 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-01-10 12:30:27,151 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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
[2022-01-10 12:30:27,151 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 12:30:27,157 INFO  L225             Difference]: With dead ends: 29
[2022-01-10 12:30:27,157 INFO  L226             Difference]: Without dead ends: 16
[2022-01-10 12:30:27,159 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-01-10 12:30:27,161 INFO  L933         BasicCegarLoop]: 19 mSDtfsCounter, 3 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 12:30:27,162 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 69 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 12:30:27,180 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16 states.
[2022-01-10 12:30:27,194 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16.
[2022-01-10 12:30:27,194 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)
[2022-01-10 12:30:27,195 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions.
[2022-01-10 12:30:27,196 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11
[2022-01-10 12:30:27,196 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 12:30:27,196 INFO  L470      AbstractCegarLoop]: Abstraction has 16 states and 17 transitions.
[2022-01-10 12:30:27,196 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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)
[2022-01-10 12:30:27,196 INFO  L276                IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions.
[2022-01-10 12:30:27,197 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2022-01-10 12:30:27,197 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 12:30:27,197 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 12:30:27,197 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-10 12:30:27,198 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 12:30:27,198 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 12:30:27,198 INFO  L85        PathProgramCache]: Analyzing trace with hash 1313180132, now seen corresponding path program 1 times
[2022-01-10 12:30:27,198 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 12:30:27,198 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178071696]
[2022-01-10 12:30:27,199 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 12:30:27,199 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 12:30:27,221 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 12:30:27,261 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2022-01-10 12:30:27,272 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 12:30:27,322 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2022-01-10 12:30:27,327 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 12:30:27,347 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2022-01-10 12:30:27,347 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 12:30:27,348 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178071696]
[2022-01-10 12:30:27,348 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178071696] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 12:30:27,348 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587434012]
[2022-01-10 12:30:27,348 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 12:30:27,349 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 12:30:27,349 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 12:30:27,350 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 12:30:27,351 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 12:30:27,399 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 12:30:27,400 INFO  L263         TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 12 conjunts are in the unsatisfiable core
[2022-01-10 12:30:27,404 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 12:30:27,664 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2022-01-10 12:30:27,664 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 12:30:28,012 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2022-01-10 12:30:28,012 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587434012] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 12:30:28,012 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-10 12:30:28,013 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15
[2022-01-10 12:30:28,013 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126083005]
[2022-01-10 12:30:28,013 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-10 12:30:28,014 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2022-01-10 12:30:28,014 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 12:30:28,014 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2022-01-10 12:30:28,015 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210
[2022-01-10 12:30:28,015 INFO  L87              Difference]: Start difference. First operand 16 states and 17 transitions. Second operand  has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 10 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5)
[2022-01-10 12:30:28,056 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 12:30:28,056 INFO  L93              Difference]: Finished difference Result 28 states and 30 transitions.
[2022-01-10 12:30:28,057 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2022-01-10 12:30:28,057 INFO  L78                 Accepts]: Start accepts. Automaton has  has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 10 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 17
[2022-01-10 12:30:28,057 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 12:30:28,058 INFO  L225             Difference]: With dead ends: 28
[2022-01-10 12:30:28,058 INFO  L226             Difference]: Without dead ends: 22
[2022-01-10 12:30:28,058 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210
[2022-01-10 12:30:28,059 INFO  L933         BasicCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 12:30:28,059 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 109 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 2 Unchecked, 0.0s Time]
[2022-01-10 12:30:28,060 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2022-01-10 12:30:28,062 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22.
[2022-01-10 12:30:28,062 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)
[2022-01-10 12:30:28,063 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions.
[2022-01-10 12:30:28,063 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 17
[2022-01-10 12:30:28,063 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 12:30:28,063 INFO  L470      AbstractCegarLoop]: Abstraction has 22 states and 23 transitions.
[2022-01-10 12:30:28,063 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 10 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5)
[2022-01-10 12:30:28,063 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions.
[2022-01-10 12:30:28,064 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2022-01-10 12:30:28,064 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 12:30:28,064 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 12:30:28,097 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 12:30:28,264 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
[2022-01-10 12:30:28,265 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 12:30:28,265 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 12:30:28,266 INFO  L85        PathProgramCache]: Analyzing trace with hash 790276260, now seen corresponding path program 2 times
[2022-01-10 12:30:28,266 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 12:30:28,266 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817188649]
[2022-01-10 12:30:28,266 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 12:30:28,266 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 12:30:28,301 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 12:30:28,374 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2022-01-10 12:30:28,387 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 12:30:28,436 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2022-01-10 12:30:28,467 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 12:30:28,542 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2022-01-10 12:30:28,548 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 12:30:28,593 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2022-01-10 12:30:28,598 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 12:30:28,622 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2022-01-10 12:30:28,622 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 12:30:28,622 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817188649]
[2022-01-10 12:30:28,622 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817188649] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 12:30:28,625 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216369064]
[2022-01-10 12:30:28,625 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-01-10 12:30:28,625 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 12:30:28,625 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 12:30:28,627 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 12:30:28,629 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 12:30:28,717 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-01-10 12:30:28,718 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 12:30:28,719 INFO  L263         TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 25 conjunts are in the unsatisfiable core
[2022-01-10 12:30:28,721 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 12:30:29,372 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2022-01-10 12:30:29,372 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 12:30:31,050 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2022-01-10 12:30:31,051 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [216369064] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 12:30:31,051 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-10 12:30:31,051 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27
[2022-01-10 12:30:31,051 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898371193]
[2022-01-10 12:30:31,051 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-10 12:30:31,052 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 27 states
[2022-01-10 12:30:31,052 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 12:30:31,053 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants.
[2022-01-10 12:30:31,054 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=604, Unknown=0, NotChecked=0, Total=702
[2022-01-10 12:30:31,054 INFO  L87              Difference]: Start difference. First operand 22 states and 23 transitions. Second operand  has 27 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 16 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11)
[2022-01-10 12:30:53,000 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 12:30:53,000 INFO  L93              Difference]: Finished difference Result 40 states and 44 transitions.
[2022-01-10 12:30:53,000 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2022-01-10 12:30:53,001 INFO  L78                 Accepts]: Start accepts. Automaton has  has 27 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 16 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) Word has length 29
[2022-01-10 12:30:53,001 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 12:30:53,001 INFO  L225             Difference]: With dead ends: 40
[2022-01-10 12:30:53,001 INFO  L226             Difference]: Without dead ends: 34
[2022-01-10 12:30:53,002 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 23.3s TimeCoverageRelationStatistics Valid=134, Invalid=795, Unknown=1, NotChecked=0, Total=930
[2022-01-10 12:30:53,003 INFO  L933         BasicCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-10 12:30:53,003 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 219 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 13 Unchecked, 0.2s Time]
[2022-01-10 12:30:53,003 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2022-01-10 12:30:53,007 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34.
[2022-01-10 12:30:53,007 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 34 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 24 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (9), 8 states have call predecessors, (9), 2 states have call successors, (9)
[2022-01-10 12:30:53,007 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions.
[2022-01-10 12:30:53,007 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 29
[2022-01-10 12:30:53,008 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 12:30:53,008 INFO  L470      AbstractCegarLoop]: Abstraction has 34 states and 35 transitions.
[2022-01-10 12:30:53,008 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 27 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 16 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11)
[2022-01-10 12:30:53,008 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions.
[2022-01-10 12:30:53,009 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 54
[2022-01-10 12:30:53,009 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 12:30:53,009 INFO  L514         BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 12:30:53,033 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-01-10 12:30:53,209 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
[2022-01-10 12:30:53,210 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 12:30:53,210 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 12:30:53,210 INFO  L85        PathProgramCache]: Analyzing trace with hash 722871844, now seen corresponding path program 3 times
[2022-01-10 12:30:53,210 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 12:30:53,211 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949627385]
[2022-01-10 12:30:53,211 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 12:30:53,211 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 12:30:53,231 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 12:30:53,303 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2022-01-10 12:30:53,317 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 12:30:53,357 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2022-01-10 12:30:53,393 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 12:30:53,437 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2022-01-10 12:30:53,451 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 12:30:53,498 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2022-01-10 12:30:53,508 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 12:30:53,560 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2022-01-10 12:30:53,569 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 12:30:53,634 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2022-01-10 12:30:53,646 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 12:30:53,736 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2022-01-10 12:30:53,740 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 12:30:53,801 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2022-01-10 12:30:53,802 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 12:30:53,829 INFO  L134       CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked.
[2022-01-10 12:30:53,829 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 12:30:53,829 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949627385]
[2022-01-10 12:30:53,830 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949627385] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 12:30:53,830 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978782075]
[2022-01-10 12:30:53,830 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-01-10 12:30:53,830 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 12:30:53,830 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 12:30:53,832 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 12:30:53,833 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 12:30:53,981 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s)
[2022-01-10 12:30:53,981 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 12:30:53,983 INFO  L263         TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 47 conjunts are in the unsatisfiable core
[2022-01-10 12:30:53,985 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 12:31:33,055 INFO  L134       CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 70 refuted. 7 times theorem prover too weak. 77 trivial. 0 not checked.
[2022-01-10 12:31:33,055 INFO  L328         TraceCheckSpWp]: Computing backward predicates...