/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/loops/sum01_bug02.i


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 20:10:57,256 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 20:10:57,257 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 20:10:57,281 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 20:10:57,282 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 20:10:57,282 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 20:10:57,283 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2022-01-10 20:10:57,298 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-10 20:10:57,299 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-01-10 20:10:57,300 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 20:10:57,301 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 20:10:57,301 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 20:10:57,302 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 20:10:57,302 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 20:10:57,303 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 20:10:57,304 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 20:10:57,305 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 20:10:57,306 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 20:10:57,307 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 20:10:57,307 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 20:10:57,308 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 20:10:57,309 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 20:10:57,310 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 20:10:57,311 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 20:10:57,311 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 20:10:57,311 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 20:10:57,312 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 20:10:57,312 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 20:10:57,313 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 20:10:57,313 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 20:10:57,314 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 20:10:57,314 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 20:10:57,315 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 20:10:57,315 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 20:10:57,315 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 20:10:57,316 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 20:10:57,316 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2022-01-10 20:10:57,317 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 20:10:57,318 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf
[2022-01-10 20:10:57,331 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 20:10:57,331 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 20:10:57,332 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 20:10:57,332 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 20:10:57,332 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 20:10:57,332 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 20:10:57,333 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 20:10:57,333 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 20:10:57,333 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 20:10:57,333 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 20:10:57,333 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 20:10:57,333 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 20:10:57,333 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 20:10:57,333 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 20:10:57,334 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 20:10:57,334 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 20:10:57,334 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 20:10:57,334 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 20:10:57,334 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 20:10:57,334 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 20:10:57,334 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 20:10:57,334 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 20:10:57,335 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 20:10:57,335 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 20:10:57,335 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 20:10:57,335 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-10 20:10:57,335 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-10 20:10:57,335 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 20:10:57,335 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 20:10:57,335 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 20:10:57,335 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-10 20:10:57,336 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 20:10:57,336 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-10 20:10:57,336 INFO  L138        SettingsManager]:  * TransformationType=BV_TO_INT_NONE
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 20:10:57,464 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 20:10:57,480 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 20:10:57,481 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 20:10:57,482 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 20:10:57,484 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 20:10:57,485 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01_bug02.i
[2022-01-10 20:10:57,539 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f76577ad0/e0abcffec4ae49acb8ed864815595238/FLAG4fa6b69cd
[2022-01-10 20:10:57,900 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 20:10:57,900 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01_bug02.i
[2022-01-10 20:10:57,904 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f76577ad0/e0abcffec4ae49acb8ed864815595238/FLAG4fa6b69cd
[2022-01-10 20:10:58,337 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f76577ad0/e0abcffec4ae49acb8ed864815595238
[2022-01-10 20:10:58,339 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 20:10:58,340 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-10 20:10:58,343 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 20:10:58,343 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 20:10:58,356 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 20:10:58,357 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:10:58" (1/1) ...
[2022-01-10 20:10:58,359 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45664d00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:10:58, skipping insertion in model container
[2022-01-10 20:10:58,359 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:10:58" (1/1) ...
[2022-01-10 20:10:58,363 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 20:10:58,373 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 20:10:58,490 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01_bug02.i[812,825]
[2022-01-10 20:10:58,495 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 20:10:58,502 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 20:10:58,513 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01_bug02.i[812,825]
[2022-01-10 20:10:58,515 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 20:10:58,524 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 20:10:58,525 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:10:58 WrapperNode
[2022-01-10 20:10:58,525 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 20:10:58,527 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 20:10:58,527 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 20:10:58,527 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 20:10:58,532 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:10:58" (1/1) ...
[2022-01-10 20:10:58,539 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:10:58" (1/1) ...
[2022-01-10 20:10:58,555 INFO  L137                Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34
[2022-01-10 20:10:58,555 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 20:10:58,556 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 20:10:58,556 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 20:10:58,556 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 20:10:58,560 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:10:58" (1/1) ...
[2022-01-10 20:10:58,560 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:10:58" (1/1) ...
[2022-01-10 20:10:58,563 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:10:58" (1/1) ...
[2022-01-10 20:10:58,563 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:10:58" (1/1) ...
[2022-01-10 20:10:58,573 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:10:58" (1/1) ...
[2022-01-10 20:10:58,576 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:10:58" (1/1) ...
[2022-01-10 20:10:58,580 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:10:58" (1/1) ...
[2022-01-10 20:10:58,586 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 20:10:58,586 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 20:10:58,586 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 20:10:58,586 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 20:10:58,587 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:10:58" (1/1) ...
[2022-01-10 20:10:58,592 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 20:10:58,600 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 20:10:58,609 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 20:10:58,614 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 20:10:58,634 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 20:10:58,634 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 20:10:58,634 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 20:10:58,635 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 20:10:58,676 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 20:10:58,677 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 20:10:58,766 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 20:10:58,769 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 20:10:58,769 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-10 20:10:58,770 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:10:58 BoogieIcfgContainer
[2022-01-10 20:10:58,771 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 20:10:58,771 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-10 20:10:58,771 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-10 20:10:58,772 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-10 20:10:58,774 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:10:58" (1/1) ...
[2022-01-10 20:10:58,814 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:10:58 BasicIcfg
[2022-01-10 20:10:58,814 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-10 20:10:58,815 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 20:10:58,815 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 20:10:58,817 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 20:10:58,817 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:10:58" (1/4) ...
[2022-01-10 20:10:58,818 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@601d055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:10:58, skipping insertion in model container
[2022-01-10 20:10:58,818 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:10:58" (2/4) ...
[2022-01-10 20:10:58,818 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@601d055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:10:58, skipping insertion in model container
[2022-01-10 20:10:58,818 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:10:58" (3/4) ...
[2022-01-10 20:10:58,818 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@601d055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:10:58, skipping insertion in model container
[2022-01-10 20:10:58,818 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:10:58" (4/4) ...
[2022-01-10 20:10:58,819 INFO  L111   eAbstractionObserver]: Analyzing ICFG sum01_bug02.iTransformedIcfg
[2022-01-10 20:10:58,822 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 20:10:58,822 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 20:10:58,870 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 20:10:58,874 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 20:10:58,875 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 20:10:58,883 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 14 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:10:58,886 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2022-01-10 20:10:58,886 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:10:58,886 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2022-01-10 20:10:58,887 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 20:10:58,890 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:10:58,890 INFO  L85        PathProgramCache]: Analyzing trace with hash 2012663176, now seen corresponding path program 1 times
[2022-01-10 20:10:58,895 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:10:58,896 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942866173]
[2022-01-10 20:10:58,896 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:10:58,896 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:10:58,959 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:10:58,989 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 20:10:58,989 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 20:10:58,989 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942866173]
[2022-01-10 20:10:58,990 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942866173] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 20:10:58,990 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 20:10:58,990 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 20:10:58,991 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429007382]
[2022-01-10 20:10:58,992 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 20:10:58,994 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-10 20:10:58,994 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 20:10:59,012 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-10 20:10:59,012 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 20:10:59,014 INFO  L87              Difference]: Start difference. First operand  has 14 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:10:59,021 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 20:10:59,022 INFO  L93              Difference]: Finished difference Result 22 states and 25 transitions.
[2022-01-10 20:10:59,022 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-10 20:10:59,023 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6
[2022-01-10 20:10:59,023 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 20:10:59,028 INFO  L225             Difference]: With dead ends: 22
[2022-01-10 20:10:59,028 INFO  L226             Difference]: Without dead ends: 10
[2022-01-10 20:10:59,029 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 20:10:59,032 INFO  L933         BasicCegarLoop]: 15 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, 15 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 20:10:59,032 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 20:10:59,043 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10 states.
[2022-01-10 20:10:59,050 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10.
[2022-01-10 20:10:59,051 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:10:59,051 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions.
[2022-01-10 20:10:59,052 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6
[2022-01-10 20:10:59,052 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 20:10:59,052 INFO  L470      AbstractCegarLoop]: Abstraction has 10 states and 11 transitions.
[2022-01-10 20:10:59,052 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:10:59,052 INFO  L276                IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions.
[2022-01-10 20:10:59,052 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2022-01-10 20:10:59,052 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:10:59,053 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2022-01-10 20:10:59,053 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-10 20:10:59,053 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 20:10:59,053 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:10:59,054 INFO  L85        PathProgramCache]: Analyzing trace with hash 2012692967, now seen corresponding path program 1 times
[2022-01-10 20:10:59,054 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:10:59,054 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259936182]
[2022-01-10 20:10:59,054 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:10:59,054 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:10:59,073 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:10:59,100 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 20:10:59,100 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 20:10:59,100 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259936182]
[2022-01-10 20:10:59,100 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259936182] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 20:10:59,100 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 20:10:59,100 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-10 20:10:59,101 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238517011]
[2022-01-10 20:10:59,101 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 20:10:59,102 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-10 20:10:59,102 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 20:10:59,102 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-10 20:10:59,102 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-10 20:10:59,102 INFO  L87              Difference]: Start difference. First operand 10 states and 11 transitions. Second operand  has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:10:59,120 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 20:10:59,120 INFO  L93              Difference]: Finished difference Result 18 states and 20 transitions.
[2022-01-10 20:10:59,120 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-01-10 20:10:59,120 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6
[2022-01-10 20:10:59,121 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 20:10:59,121 INFO  L225             Difference]: With dead ends: 18
[2022-01-10 20:10:59,121 INFO  L226             Difference]: Without dead ends: 14
[2022-01-10 20:10:59,121 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 20:10:59,122 INFO  L933         BasicCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 29 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 20:10:59,123 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 29 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 20:10:59,123 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14 states.
[2022-01-10 20:10:59,125 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14.
[2022-01-10 20:10:59,125 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 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 20:10:59,125 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions.
[2022-01-10 20:10:59,125 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 6
[2022-01-10 20:10:59,125 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 20:10:59,125 INFO  L470      AbstractCegarLoop]: Abstraction has 14 states and 16 transitions.
[2022-01-10 20:10:59,125 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:10:59,126 INFO  L276                IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions.
[2022-01-10 20:10:59,126 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2022-01-10 20:10:59,126 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:10:59,126 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 20:10:59,126 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-01-10 20:10:59,126 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 20:10:59,127 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:10:59,127 INFO  L85        PathProgramCache]: Analyzing trace with hash -443244371, now seen corresponding path program 1 times
[2022-01-10 20:10:59,127 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:10:59,127 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714100857]
[2022-01-10 20:10:59,127 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:10:59,127 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:10:59,168 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:10:59,696 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:10:59,696 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 20:10:59,696 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714100857]
[2022-01-10 20:10:59,698 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714100857] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 20:10:59,698 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410077477]
[2022-01-10 20:10:59,698 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:10:59,699 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 20:10:59,699 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 20:10:59,700 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 20:10:59,701 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 20:10:59,749 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:10:59,751 INFO  L263         TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 16 conjunts are in the unsatisfiable core
[2022-01-10 20:10:59,755 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 20:11:00,802 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:11:00,803 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 20:11:01,334 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:11:01,335 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [410077477] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 20:11:01,335 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-10 20:11:01,335 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17
[2022-01-10 20:11:01,335 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140281653]
[2022-01-10 20:11:01,335 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-10 20:11:01,335 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2022-01-10 20:11:01,335 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 20:11:01,336 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2022-01-10 20:11:01,336 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272
[2022-01-10 20:11:01,336 INFO  L87              Difference]: Start difference. First operand 14 states and 16 transitions. Second operand  has 17 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:11:01,539 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 20:11:01,540 INFO  L93              Difference]: Finished difference Result 32 states and 37 transitions.
[2022-01-10 20:11:01,540 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2022-01-10 20:11:01,540 INFO  L78                 Accepts]: Start accepts. Automaton has  has 17 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10
[2022-01-10 20:11:01,540 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 20:11:01,541 INFO  L225             Difference]: With dead ends: 32
[2022-01-10 20:11:01,541 INFO  L226             Difference]: Without dead ends: 27
[2022-01-10 20:11:01,541 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306
[2022-01-10 20:11:01,542 INFO  L933         BasicCegarLoop]: 6 mSDtfsCounter, 11 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-10 20:11:01,542 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 58 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 57 Invalid, 0 Unknown, 19 Unchecked, 0.1s Time]
[2022-01-10 20:11:01,543 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2022-01-10 20:11:01,545 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23.
[2022-01-10 20:11:01,546 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 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 20:11:01,546 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions.
[2022-01-10 20:11:01,546 INFO  L78                 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 10
[2022-01-10 20:11:01,546 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 20:11:01,547 INFO  L470      AbstractCegarLoop]: Abstraction has 23 states and 27 transitions.
[2022-01-10 20:11:01,547 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 17 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:11:01,547 INFO  L276                IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions.
[2022-01-10 20:11:01,547 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2022-01-10 20:11:01,547 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:11:01,547 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 20:11:01,575 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 20:11:01,775 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 20:11:01,775 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 20:11:01,776 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:11:01,776 INFO  L85        PathProgramCache]: Analyzing trace with hash -1457559628, now seen corresponding path program 1 times
[2022-01-10 20:11:01,776 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:11:01,776 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934267290]
[2022-01-10 20:11:01,776 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:11:01,777 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:11:01,811 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:11:01,927 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:11:01,928 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 20:11:01,928 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934267290]
[2022-01-10 20:11:01,928 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934267290] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 20:11:01,930 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249533055]
[2022-01-10 20:11:01,930 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:11:01,930 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 20:11:01,930 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 20:11:01,941 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 20:11:01,967 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 20:11:02,013 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:11:02,014 INFO  L263         TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 18 conjunts are in the unsatisfiable core
[2022-01-10 20:11:02,015 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 20:11:02,171 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:11:02,172 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 20:11:02,498 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:11:02,498 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [249533055] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 20:11:02,499 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-10 20:11:02,499 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 8] total 15
[2022-01-10 20:11:02,499 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475190709]
[2022-01-10 20:11:02,501 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-10 20:11:02,502 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2022-01-10 20:11:02,504 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 20:11:02,505 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2022-01-10 20:11:02,505 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210
[2022-01-10 20:11:02,506 INFO  L87              Difference]: Start difference. First operand 23 states and 27 transitions. Second operand  has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 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 20:11:03,521 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 20:11:03,521 INFO  L93              Difference]: Finished difference Result 39 states and 47 transitions.
[2022-01-10 20:11:03,523 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2022-01-10 20:11:03,523 INFO  L78                 Accepts]: Start accepts. Automaton has  has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 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 14
[2022-01-10 20:11:03,523 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 20:11:03,523 INFO  L225             Difference]: With dead ends: 39
[2022-01-10 20:11:03,523 INFO  L226             Difference]: Without dead ends: 25
[2022-01-10 20:11:03,524 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306
[2022-01-10 20:11:03,524 INFO  L933         BasicCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-01-10 20:11:03,525 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 34 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-01-10 20:11:03,525 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2022-01-10 20:11:03,527 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20.
[2022-01-10 20:11:03,527 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 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 20:11:03,528 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions.
[2022-01-10 20:11:03,528 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 14
[2022-01-10 20:11:03,528 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 20:11:03,528 INFO  L470      AbstractCegarLoop]: Abstraction has 20 states and 22 transitions.
[2022-01-10 20:11:03,528 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 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 20:11:03,528 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions.
[2022-01-10 20:11:03,528 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2022-01-10 20:11:03,528 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:11:03,529 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1]
[2022-01-10 20:11:03,534 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2022-01-10 20:11:03,733 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3
[2022-01-10 20:11:03,734 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 20:11:03,734 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:11:03,735 INFO  L85        PathProgramCache]: Analyzing trace with hash -1031379655, now seen corresponding path program 2 times
[2022-01-10 20:11:03,735 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:11:03,735 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006722288]
[2022-01-10 20:11:03,735 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:11:03,735 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:11:03,796 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:11:05,916 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:11:05,919 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 20:11:05,921 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006722288]
[2022-01-10 20:11:05,923 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006722288] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 20:11:05,924 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873911908]
[2022-01-10 20:11:05,929 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-01-10 20:11:05,929 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 20:11:05,945 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 20:11:05,955 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 20:11:05,956 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 20:11:06,067 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-01-10 20:11:06,068 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 20:11:06,069 INFO  L263         TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 29 conjunts are in the unsatisfiable core
[2022-01-10 20:11:06,070 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 20:11:18,135 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:11:18,136 INFO  L328         TraceCheckSpWp]: Computing backward predicates...