/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/array-examples/standard_running-2.i


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 09:30:21,454 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 09:30:21,455 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 09:30:21,507 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 09:30:21,508 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 09:30:21,508 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 09:30:21,509 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-10 09:30:21,510 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-10 09:30:21,511 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-10 09:30:21,512 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-01-10 09:30:21,513 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 09:30:21,513 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 09:30:21,514 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 09:30:21,514 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 09:30:21,515 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 09:30:21,515 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 09:30:21,516 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 09:30:21,517 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 09:30:21,518 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 09:30:21,520 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 09:30:21,521 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 09:30:21,522 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 09:30:21,523 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 09:30:21,525 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 09:30:21,525 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 09:30:21,525 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 09:30:21,526 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 09:30:21,526 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 09:30:21,526 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 09:30:21,526 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 09:30:21,527 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 09:30:21,527 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 09:30:21,528 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 09:30:21,528 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 09:30:21,529 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 09:30:21,529 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 09:30:21,529 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 09:30:21,529 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-10 09:30:21,530 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-10 09:30:21,531 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 09:30:21,531 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 09:30:21,548 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 09:30:21,548 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 09:30:21,549 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 09:30:21,549 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 09:30:21,549 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 09:30:21,549 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 09:30:21,549 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 09:30:21,550 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 09:30:21,550 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 09:30:21,550 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 09:30:21,550 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 09:30:21,550 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 09:30:21,550 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 09:30:21,550 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 09:30:21,550 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 09:30:21,550 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 09:30:21,550 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 09:30:21,551 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 09:30:21,551 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 09:30:21,551 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 09:30:21,551 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 09:30:21,551 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 09:30:21,551 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 09:30:21,551 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 09:30:21,551 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 09:30:21,551 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-10 09:30:21,551 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-10 09:30:21,552 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 09:30:21,552 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 09:30:21,552 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 09:30:21,552 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-10 09:30:21,552 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 09:30:21,552 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-10 09:30:21,553 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 09:30:21,752 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 09:30:21,769 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 09:30:21,772 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 09:30:21,773 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 09:30:21,773 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 09:30:21,774 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_running-2.i
[2022-01-10 09:30:21,812 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2116acf63/0a6712e7acb244e6ba93c7a57ed43c6e/FLAG8a4f3a059
[2022-01-10 09:30:22,153 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 09:30:22,153 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_running-2.i
[2022-01-10 09:30:22,157 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2116acf63/0a6712e7acb244e6ba93c7a57ed43c6e/FLAG8a4f3a059
[2022-01-10 09:30:22,165 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2116acf63/0a6712e7acb244e6ba93c7a57ed43c6e
[2022-01-10 09:30:22,166 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 09:30:22,167 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-10 09:30:22,168 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 09:30:22,168 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 09:30:22,170 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 09:30:22,171 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:30:22" (1/1) ...
[2022-01-10 09:30:22,171 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@445ee9bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:22, skipping insertion in model container
[2022-01-10 09:30:22,172 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:30:22" (1/1) ...
[2022-01-10 09:30:22,175 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 09:30:22,184 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 09:30:22,324 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_running-2.i[811,824]
[2022-01-10 09:30:22,333 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 09:30:22,339 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 09:30:22,349 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_running-2.i[811,824]
[2022-01-10 09:30:22,366 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 09:30:22,378 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 09:30:22,378 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:22 WrapperNode
[2022-01-10 09:30:22,378 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 09:30:22,379 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 09:30:22,380 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 09:30:22,380 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 09:30:22,384 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:22" (1/1) ...
[2022-01-10 09:30:22,396 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:22" (1/1) ...
[2022-01-10 09:30:22,412 INFO  L137                Inliner]: procedures = 18, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83
[2022-01-10 09:30:22,413 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 09:30:22,413 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 09:30:22,414 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 09:30:22,414 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 09:30:22,419 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:22" (1/1) ...
[2022-01-10 09:30:22,419 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:22" (1/1) ...
[2022-01-10 09:30:22,424 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:22" (1/1) ...
[2022-01-10 09:30:22,424 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:22" (1/1) ...
[2022-01-10 09:30:22,435 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:22" (1/1) ...
[2022-01-10 09:30:22,438 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:22" (1/1) ...
[2022-01-10 09:30:22,445 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:22" (1/1) ...
[2022-01-10 09:30:22,447 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 09:30:22,449 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 09:30:22,449 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 09:30:22,449 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 09:30:22,450 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:22" (1/1) ...
[2022-01-10 09:30:22,460 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 09:30:22,469 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 09:30:22,478 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 09:30:22,499 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 09:30:22,505 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 09:30:22,505 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 09:30:22,506 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2022-01-10 09:30:22,506 INFO  L130     BoogieDeclarations]: Found specification of procedure read~intINTTYPE4
[2022-01-10 09:30:22,506 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 09:30:22,506 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 09:30:22,506 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-01-10 09:30:22,506 INFO  L130     BoogieDeclarations]: Found specification of procedure write~intINTTYPE4
[2022-01-10 09:30:22,552 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 09:30:22,553 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 09:30:22,700 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 09:30:22,704 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 09:30:22,704 INFO  L299             CfgBuilder]: Removed 3 assume(true) statements.
[2022-01-10 09:30:22,705 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:30:22 BoogieIcfgContainer
[2022-01-10 09:30:22,705 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 09:30:22,706 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-10 09:30:22,706 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-10 09:30:22,707 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-10 09:30:22,708 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:30:22" (1/1) ...
[2022-01-10 09:30:22,794 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:30:22 BasicIcfg
[2022-01-10 09:30:22,794 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-10 09:30:22,795 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 09:30:22,795 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 09:30:22,797 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 09:30:22,797 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:30:22" (1/4) ...
[2022-01-10 09:30:22,798 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c398463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:30:22, skipping insertion in model container
[2022-01-10 09:30:22,798 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:30:22" (2/4) ...
[2022-01-10 09:30:22,798 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c398463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:30:22, skipping insertion in model container
[2022-01-10 09:30:22,798 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:30:22" (3/4) ...
[2022-01-10 09:30:22,798 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c398463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:30:22, skipping insertion in model container
[2022-01-10 09:30:22,798 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:30:22" (4/4) ...
[2022-01-10 09:30:22,799 INFO  L111   eAbstractionObserver]: Analyzing ICFG standard_running-2.iTransformedIcfg
[2022-01-10 09:30:22,802 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 09:30:22,802 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 09:30:22,829 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 09:30:22,835 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 09:30:22,835 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 09:30:22,843 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 24 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:30:22,846 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2022-01-10 09:30:22,846 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:30:22,847 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 09:30:22,847 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 09:30:22,850 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:30:22,850 INFO  L85        PathProgramCache]: Analyzing trace with hash -1518006800, now seen corresponding path program 1 times
[2022-01-10 09:30:22,856 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:30:22,856 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762835253]
[2022-01-10 09:30:22,857 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:30:22,857 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:30:22,921 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:30:22,969 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 09:30:22,969 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 09:30:22,970 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762835253]
[2022-01-10 09:30:22,970 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762835253] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 09:30:22,970 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 09:30:22,971 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 09:30:22,972 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518564880]
[2022-01-10 09:30:22,973 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 09:30:22,976 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-10 09:30:22,977 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 09:30:23,003 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-10 09:30:23,003 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 09:30:23,005 INFO  L87              Difference]: Start difference. First operand  has 24 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:30:23,014 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 09:30:23,014 INFO  L93              Difference]: Finished difference Result 44 states and 64 transitions.
[2022-01-10 09:30:23,015 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-10 09:30:23,015 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10
[2022-01-10 09:30:23,016 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 09:30:23,020 INFO  L225             Difference]: With dead ends: 44
[2022-01-10 09:30:23,020 INFO  L226             Difference]: Without dead ends: 20
[2022-01-10 09:30:23,022 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 09:30:23,024 INFO  L933         BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 09:30:23,025 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 09:30:23,035 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2022-01-10 09:30:23,042 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20.
[2022-01-10 09:30:23,043 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:30:23,044 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 27 transitions.
[2022-01-10 09:30:23,045 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 27 transitions. Word has length 10
[2022-01-10 09:30:23,046 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 09:30:23,046 INFO  L470      AbstractCegarLoop]: Abstraction has 20 states and 27 transitions.
[2022-01-10 09:30:23,046 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:30:23,048 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 27 transitions.
[2022-01-10 09:30:23,048 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2022-01-10 09:30:23,048 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:30:23,048 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 09:30:23,049 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-10 09:30:23,049 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 09:30:23,052 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:30:23,052 INFO  L85        PathProgramCache]: Analyzing trace with hash 253462477, now seen corresponding path program 1 times
[2022-01-10 09:30:23,052 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:30:23,052 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357608996]
[2022-01-10 09:30:23,053 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:30:23,053 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:30:23,100 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:30:23,133 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 09:30:23,134 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 09:30:23,134 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357608996]
[2022-01-10 09:30:23,134 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357608996] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 09:30:23,134 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 09:30:23,134 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-10 09:30:23,134 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069927642]
[2022-01-10 09:30:23,135 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 09:30:23,135 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-10 09:30:23,135 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 09:30:23,136 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-10 09:30:23,136 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-10 09:30:23,136 INFO  L87              Difference]: Start difference. First operand 20 states and 27 transitions. Second operand  has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:30:23,172 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 09:30:23,172 INFO  L93              Difference]: Finished difference Result 31 states and 42 transitions.
[2022-01-10 09:30:23,173 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-01-10 09:30:23,173 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10
[2022-01-10 09:30:23,173 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 09:30:23,173 INFO  L225             Difference]: With dead ends: 31
[2022-01-10 09:30:23,173 INFO  L226             Difference]: Without dead ends: 27
[2022-01-10 09:30:23,174 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-10 09:30:23,175 INFO  L933         BasicCegarLoop]: 27 mSDtfsCounter, 10 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 09:30:23,175 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 75 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 09:30:23,176 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2022-01-10 09:30:23,178 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27.
[2022-01-10 09:30:23,178 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 27 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 26 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:30:23,178 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 38 transitions.
[2022-01-10 09:30:23,179 INFO  L78                 Accepts]: Start accepts. Automaton has 27 states and 38 transitions. Word has length 10
[2022-01-10 09:30:23,179 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 09:30:23,179 INFO  L470      AbstractCegarLoop]: Abstraction has 27 states and 38 transitions.
[2022-01-10 09:30:23,179 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:30:23,179 INFO  L276                IsEmpty]: Start isEmpty. Operand 27 states and 38 transitions.
[2022-01-10 09:30:23,179 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2022-01-10 09:30:23,180 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:30:23,180 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 09:30:23,180 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-01-10 09:30:23,180 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 09:30:23,180 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:30:23,180 INFO  L85        PathProgramCache]: Analyzing trace with hash 1873668850, now seen corresponding path program 1 times
[2022-01-10 09:30:23,181 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:30:23,181 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853072167]
[2022-01-10 09:30:23,181 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:30:23,181 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:30:23,270 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:30:23,323 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-01-10 09:30:23,324 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 09:30:23,324 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853072167]
[2022-01-10 09:30:23,325 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853072167] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 09:30:23,325 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 09:30:23,325 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-10 09:30:23,326 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195605079]
[2022-01-10 09:30:23,326 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 09:30:23,326 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 09:30:23,326 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 09:30:23,327 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 09:30:23,327 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 09:30:23,327 INFO  L87              Difference]: Start difference. First operand 27 states and 38 transitions. Second operand  has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:30:23,389 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 09:30:23,389 INFO  L93              Difference]: Finished difference Result 66 states and 96 transitions.
[2022-01-10 09:30:23,389 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 09:30:23,389 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17
[2022-01-10 09:30:23,389 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 09:30:23,390 INFO  L225             Difference]: With dead ends: 66
[2022-01-10 09:30:23,390 INFO  L226             Difference]: Without dead ends: 43
[2022-01-10 09:30:23,390 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 09:30:23,391 INFO  L933         BasicCegarLoop]: 16 mSDtfsCounter, 14 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-10 09:30:23,391 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 26 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-10 09:30:23,392 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2022-01-10 09:30:23,395 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 29.
[2022-01-10 09:30:23,395 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 29 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:30:23,395 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions.
[2022-01-10 09:30:23,395 INFO  L78                 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 17
[2022-01-10 09:30:23,395 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 09:30:23,396 INFO  L470      AbstractCegarLoop]: Abstraction has 29 states and 40 transitions.
[2022-01-10 09:30:23,396 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:30:23,396 INFO  L276                IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions.
[2022-01-10 09:30:23,396 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2022-01-10 09:30:23,396 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:30:23,396 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 09:30:23,396 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-01-10 09:30:23,397 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 09:30:23,397 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:30:23,397 INFO  L85        PathProgramCache]: Analyzing trace with hash 1732738517, now seen corresponding path program 1 times
[2022-01-10 09:30:23,397 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:30:23,397 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477095582]
[2022-01-10 09:30:23,397 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:30:23,398 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:30:23,447 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:30:23,497 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2022-01-10 09:30:23,497 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 09:30:23,497 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477095582]
[2022-01-10 09:30:23,497 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477095582] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 09:30:23,497 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044498983]
[2022-01-10 09:30:23,497 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:30:23,498 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 09:30:23,498 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 09:30:23,499 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 09:30:23,500 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 09:30:23,613 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:30:23,615 INFO  L263         TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 6 conjunts are in the unsatisfiable core
[2022-01-10 09:30:23,618 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 09:30:23,768 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2022-01-10 09:30:23,768 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 09:30:23,846 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2022-01-10 09:30:23,846 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044498983] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 09:30:23,846 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-10 09:30:23,847 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7
[2022-01-10 09:30:23,847 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338471588]
[2022-01-10 09:30:23,847 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-10 09:30:23,850 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-01-10 09:30:23,850 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 09:30:23,851 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-01-10 09:30:23,852 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2022-01-10 09:30:23,852 INFO  L87              Difference]: Start difference. First operand 29 states and 40 transitions. Second operand  has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:30:24,094 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 09:30:24,094 INFO  L93              Difference]: Finished difference Result 109 states and 164 transitions.
[2022-01-10 09:30:24,096 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-01-10 09:30:24,096 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22
[2022-01-10 09:30:24,096 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 09:30:24,097 INFO  L225             Difference]: With dead ends: 109
[2022-01-10 09:30:24,097 INFO  L226             Difference]: Without dead ends: 85
[2022-01-10 09:30:24,097 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56
[2022-01-10 09:30:24,098 INFO  L933         BasicCegarLoop]: 22 mSDtfsCounter, 96 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-10 09:30:24,098 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 62 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-10 09:30:24,099 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 85 states.
[2022-01-10 09:30:24,110 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83.
[2022-01-10 09:30:24,111 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 83 states, 82 states have (on average 1.451219512195122) internal successors, (119), 82 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:30:24,114 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 119 transitions.
[2022-01-10 09:30:24,115 INFO  L78                 Accepts]: Start accepts. Automaton has 83 states and 119 transitions. Word has length 22
[2022-01-10 09:30:24,115 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 09:30:24,115 INFO  L470      AbstractCegarLoop]: Abstraction has 83 states and 119 transitions.
[2022-01-10 09:30:24,115 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:30:24,115 INFO  L276                IsEmpty]: Start isEmpty. Operand 83 states and 119 transitions.
[2022-01-10 09:30:24,118 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 59
[2022-01-10 09:30:24,118 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:30:24,118 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 09:30:24,136 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 09:30:24,331 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 09:30:24,332 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 09:30:24,332 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:30:24,332 INFO  L85        PathProgramCache]: Analyzing trace with hash 2009954645, now seen corresponding path program 2 times
[2022-01-10 09:30:24,332 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:30:24,332 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120659637]
[2022-01-10 09:30:24,333 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:30:24,333 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:30:24,446 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:30:24,555 INFO  L134       CoverageAnalysis]: Checked inductivity of 84 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked.
[2022-01-10 09:30:24,556 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 09:30:24,556 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120659637]
[2022-01-10 09:30:24,556 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120659637] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 09:30:24,556 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 09:30:24,556 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-01-10 09:30:24,556 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743705782]
[2022-01-10 09:30:24,556 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 09:30:24,557 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-01-10 09:30:24,558 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 09:30:24,559 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-01-10 09:30:24,559 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2022-01-10 09:30:24,560 INFO  L87              Difference]: Start difference. First operand 83 states and 119 transitions. Second operand  has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:30:24,660 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 09:30:24,660 INFO  L93              Difference]: Finished difference Result 175 states and 265 transitions.
[2022-01-10 09:30:24,663 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-01-10 09:30:24,663 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58
[2022-01-10 09:30:24,663 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 09:30:24,665 INFO  L225             Difference]: With dead ends: 175
[2022-01-10 09:30:24,665 INFO  L226             Difference]: Without dead ends: 125
[2022-01-10 09:30:24,665 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2022-01-10 09:30:24,666 INFO  L933         BasicCegarLoop]: 21 mSDtfsCounter, 9 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-10 09:30:24,666 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 45 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-10 09:30:24,667 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 125 states.
[2022-01-10 09:30:24,674 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 108.
[2022-01-10 09:30:24,674 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 108 states, 107 states have (on average 1.3925233644859814) internal successors, (149), 107 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:30:24,675 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 149 transitions.
[2022-01-10 09:30:24,678 INFO  L78                 Accepts]: Start accepts. Automaton has 108 states and 149 transitions. Word has length 58
[2022-01-10 09:30:24,678 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 09:30:24,678 INFO  L470      AbstractCegarLoop]: Abstraction has 108 states and 149 transitions.
[2022-01-10 09:30:24,678 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:30:24,678 INFO  L276                IsEmpty]: Start isEmpty. Operand 108 states and 149 transitions.
[2022-01-10 09:30:24,682 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 59
[2022-01-10 09:30:24,682 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:30:24,682 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 09:30:24,682 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-01-10 09:30:24,682 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 09:30:24,683 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:30:24,683 INFO  L85        PathProgramCache]: Analyzing trace with hash 149017172, now seen corresponding path program 1 times
[2022-01-10 09:30:24,683 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:30:24,683 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868002927]
[2022-01-10 09:30:24,683 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:30:24,683 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:30:24,777 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:30:24,852 INFO  L134       CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked.
[2022-01-10 09:30:24,852 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 09:30:24,852 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868002927]
[2022-01-10 09:30:24,852 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868002927] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 09:30:24,852 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165813752]
[2022-01-10 09:30:24,852 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:30:24,853 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 09:30:24,853 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 09:30:24,854 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 09:30:24,855 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 09:30:25,158 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:30:25,161 INFO  L263         TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 36 conjunts are in the unsatisfiable core
[2022-01-10 09:30:25,163 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 09:30:36,284 INFO  L134       CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked.
[2022-01-10 09:30:36,285 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 09:30:39,600 INFO  L134       CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked.
[2022-01-10 09:30:39,601 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [165813752] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 09:30:39,601 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-10 09:30:39,601 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16
[2022-01-10 09:30:39,601 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167638640]
[2022-01-10 09:30:39,601 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-10 09:30:39,602 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2022-01-10 09:30:39,602 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 09:30:39,602 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2022-01-10 09:30:39,602 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=160, Unknown=6, NotChecked=0, Total=240
[2022-01-10 09:30:39,602 INFO  L87              Difference]: Start difference. First operand 108 states and 149 transitions. Second operand  has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:30:45,985 WARN  L228               SmtUtils]: Spent 5.46s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2022-01-10 09:31:22,080 WARN  L228               SmtUtils]: Spent 5.28s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2022-01-10 09:31:25,419 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 09:31:25,419 INFO  L93              Difference]: Finished difference Result 370 states and 534 transitions.
[2022-01-10 09:31:25,419 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2022-01-10 09:31:25,420 INFO  L78                 Accepts]: Start accepts. Automaton has  has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58
[2022-01-10 09:31:25,420 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 09:31:25,421 INFO  L225             Difference]: With dead ends: 370
[2022-01-10 09:31:25,421 INFO  L226             Difference]: Without dead ends: 273
[2022-01-10 09:31:25,422 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 54.6s TimeCoverageRelationStatistics Valid=182, Invalid=356, Unknown=14, NotChecked=0, Total=552
[2022-01-10 09:31:25,422 INFO  L933         BasicCegarLoop]: 34 mSDtfsCounter, 474 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 130 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time
[2022-01-10 09:31:25,423 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [474 Valid, 214 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 295 Invalid, 0 Unknown, 130 Unchecked, 4.7s Time]
[2022-01-10 09:31:25,423 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 273 states.
[2022-01-10 09:31:25,465 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 268.
[2022-01-10 09:31:25,466 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 268 states, 267 states have (on average 1.404494382022472) internal successors, (375), 267 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:31:25,470 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 375 transitions.
[2022-01-10 09:31:25,470 INFO  L78                 Accepts]: Start accepts. Automaton has 268 states and 375 transitions. Word has length 58
[2022-01-10 09:31:25,470 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 09:31:25,470 INFO  L470      AbstractCegarLoop]: Abstraction has 268 states and 375 transitions.
[2022-01-10 09:31:25,470 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:31:25,470 INFO  L276                IsEmpty]: Start isEmpty. Operand 268 states and 375 transitions.
[2022-01-10 09:31:25,473 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 129
[2022-01-10 09:31:25,473 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:31:25,474 INFO  L514         BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 09:31:25,481 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 09:31:25,679 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,SelfDestructingSolverStorable5
[2022-01-10 09:31:25,681 INFO  L402      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 09:31:25,681 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:31:25,682 INFO  L85        PathProgramCache]: Analyzing trace with hash -2018938882, now seen corresponding path program 2 times
[2022-01-10 09:31:25,682 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:31:25,682 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083733699]
[2022-01-10 09:31:25,682 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:31:25,682 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:31:25,890 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:31:26,168 INFO  L134       CoverageAnalysis]: Checked inductivity of 551 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked.
[2022-01-10 09:31:26,169 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 09:31:26,169 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083733699]
[2022-01-10 09:31:26,169 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083733699] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 09:31:26,169 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244824168]
[2022-01-10 09:31:26,169 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-01-10 09:31:26,169 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 09:31:26,169 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 09:31:26,172 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 09:31:26,173 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 09:31:26,430 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-01-10 09:31:26,430 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 09:31:26,435 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1106 conjuncts, 56 conjunts are in the unsatisfiable core
[2022-01-10 09:31:26,438 INFO  L286         TraceCheckSpWp]: Computing forward predicates...