/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/sanfoundry_27_ground.i


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 09:24:34,483 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 09:24:34,484 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 09:24:34,535 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 09:24:34,536 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 09:24:34,538 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 09:24:34,539 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-10 09:24:34,540 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-10 09:24:34,542 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-10 09:24:34,542 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-01-10 09:24:34,543 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-01-10 09:24:34,544 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 09:24:34,544 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 09:24:34,553 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 09:24:34,553 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 09:24:34,554 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 09:24:34,555 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 09:24:34,556 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 09:24:34,557 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 09:24:34,558 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 09:24:34,559 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 09:24:34,561 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 09:24:34,562 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 09:24:34,563 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 09:24:34,565 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 09:24:34,565 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 09:24:34,565 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 09:24:34,566 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 09:24:34,566 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 09:24:34,567 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 09:24:34,567 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 09:24:34,568 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 09:24:34,568 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 09:24:34,569 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 09:24:34,570 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 09:24:34,570 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 09:24:34,570 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 09:24:34,571 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 09:24:34,571 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-10 09:24:34,577 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-10 09:24:34,578 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 09:24:34,579 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 09:24:34,613 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 09:24:34,614 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 09:24:34,614 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 09:24:34,614 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 09:24:34,616 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 09:24:34,616 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 09:24:34,616 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 09:24:34,616 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 09:24:34,616 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 09:24:34,616 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 09:24:34,617 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 09:24:34,617 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 09:24:34,617 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 09:24:34,617 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 09:24:34,617 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 09:24:34,618 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 09:24:34,618 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 09:24:34,618 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 09:24:34,618 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 09:24:34,618 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 09:24:34,618 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 09:24:34,620 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 09:24:34,620 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 09:24:34,620 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 09:24:34,620 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 09:24:34,620 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-10 09:24:34,620 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-10 09:24:34,621 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 09:24:34,621 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 09:24:34,621 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 09:24:34,621 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-10 09:24:34,621 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 09:24:34,623 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-10 09:24:34,623 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 09:24:34,807 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 09:24:34,828 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 09:24:34,830 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 09:24:34,831 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 09:24:34,831 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 09:24:34,832 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sanfoundry_27_ground.i
[2022-01-10 09:24:34,891 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64520e6ab/a0c1a205117f479795859d21c1abb1ec/FLAG765ff12af
[2022-01-10 09:24:35,246 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 09:24:35,246 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/sanfoundry_27_ground.i
[2022-01-10 09:24:35,251 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64520e6ab/a0c1a205117f479795859d21c1abb1ec/FLAG765ff12af
[2022-01-10 09:24:35,261 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64520e6ab/a0c1a205117f479795859d21c1abb1ec
[2022-01-10 09:24:35,263 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 09:24:35,264 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-10 09:24:35,266 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 09:24:35,266 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 09:24:35,268 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 09:24:35,269 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:24:35" (1/1) ...
[2022-01-10 09:24:35,270 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36e3caec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:35, skipping insertion in model container
[2022-01-10 09:24:35,270 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:24:35" (1/1) ...
[2022-01-10 09:24:35,275 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 09:24:35,286 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 09:24:35,424 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/sanfoundry_27_ground.i[813,826]
[2022-01-10 09:24:35,446 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 09:24:35,456 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 09:24:35,468 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/sanfoundry_27_ground.i[813,826]
[2022-01-10 09:24:35,480 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 09:24:35,495 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 09:24:35,496 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:35 WrapperNode
[2022-01-10 09:24:35,496 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 09:24:35,497 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 09:24:35,497 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 09:24:35,498 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 09:24:35,504 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:35" (1/1) ...
[2022-01-10 09:24:35,512 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:35" (1/1) ...
[2022-01-10 09:24:35,526 INFO  L137                Inliner]: procedures = 18, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 62
[2022-01-10 09:24:35,526 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 09:24:35,527 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 09:24:35,527 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 09:24:35,527 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 09:24:35,532 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:35" (1/1) ...
[2022-01-10 09:24:35,532 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:35" (1/1) ...
[2022-01-10 09:24:35,534 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:35" (1/1) ...
[2022-01-10 09:24:35,534 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:35" (1/1) ...
[2022-01-10 09:24:35,539 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:35" (1/1) ...
[2022-01-10 09:24:35,542 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:35" (1/1) ...
[2022-01-10 09:24:35,543 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:35" (1/1) ...
[2022-01-10 09:24:35,545 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 09:24:35,545 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 09:24:35,546 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 09:24:35,546 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 09:24:35,547 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:35" (1/1) ...
[2022-01-10 09:24:35,555 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 09:24:35,563 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 09:24:35,571 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 09:24:35,583 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 09:24:35,602 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 09:24:35,602 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 09:24:35,602 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2022-01-10 09:24:35,602 INFO  L130     BoogieDeclarations]: Found specification of procedure read~intINTTYPE4
[2022-01-10 09:24:35,602 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 09:24:35,603 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 09:24:35,603 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-01-10 09:24:35,603 INFO  L130     BoogieDeclarations]: Found specification of procedure write~intINTTYPE4
[2022-01-10 09:24:35,655 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 09:24:35,656 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 09:24:35,759 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 09:24:35,764 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 09:24:35,764 INFO  L299             CfgBuilder]: Removed 3 assume(true) statements.
[2022-01-10 09:24:35,765 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:24:35 BoogieIcfgContainer
[2022-01-10 09:24:35,765 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 09:24:35,766 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-10 09:24:35,766 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-10 09:24:35,767 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-10 09:24:35,770 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:24:35" (1/1) ...
[2022-01-10 09:24:35,861 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:24:35 BasicIcfg
[2022-01-10 09:24:35,861 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-10 09:24:35,862 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 09:24:35,862 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 09:24:35,867 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 09:24:35,867 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:24:35" (1/4) ...
[2022-01-10 09:24:35,873 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a88a780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:24:35, skipping insertion in model container
[2022-01-10 09:24:35,873 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:35" (2/4) ...
[2022-01-10 09:24:35,873 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a88a780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:24:35, skipping insertion in model container
[2022-01-10 09:24:35,873 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:24:35" (3/4) ...
[2022-01-10 09:24:35,874 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a88a780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:24:35, skipping insertion in model container
[2022-01-10 09:24:35,874 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:24:35" (4/4) ...
[2022-01-10 09:24:35,875 INFO  L111   eAbstractionObserver]: Analyzing ICFG sanfoundry_27_ground.iTransformedIcfg
[2022-01-10 09:24:35,878 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 09:24:35,879 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 09:24:35,911 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 09:24:35,924 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 09:24:35,925 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 09:24:35,940 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 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 09:24:35,945 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2022-01-10 09:24:35,945 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:24:35,946 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 09:24:35,946 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 09:24:35,951 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:24:35,951 INFO  L85        PathProgramCache]: Analyzing trace with hash 1340562217, now seen corresponding path program 1 times
[2022-01-10 09:24:35,961 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:24:35,961 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752626365]
[2022-01-10 09:24:35,961 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:24:35,962 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:24:36,100 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:24:36,165 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 09:24:36,166 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 09:24:36,167 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752626365]
[2022-01-10 09:24:36,167 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752626365] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 09:24:36,168 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 09:24:36,168 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 09:24:36,169 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502687615]
[2022-01-10 09:24:36,172 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 09:24:36,175 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-10 09:24:36,176 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 09:24:36,203 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-10 09:24:36,204 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 09:24:36,206 INFO  L87              Difference]: Start difference. First operand  has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:24:36,227 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 09:24:36,228 INFO  L93              Difference]: Finished difference Result 34 states and 46 transitions.
[2022-01-10 09:24:36,229 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-10 09:24:36,230 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9
[2022-01-10 09:24:36,230 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 09:24:36,237 INFO  L225             Difference]: With dead ends: 34
[2022-01-10 09:24:36,237 INFO  L226             Difference]: Without dead ends: 15
[2022-01-10 09:24:36,240 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 09:24:36,245 INFO  L933         BasicCegarLoop]: 22 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, 22 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 09:24:36,246 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 09:24:36,261 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15 states.
[2022-01-10 09:24:36,279 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15.
[2022-01-10 09:24:36,280 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:24:36,281 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions.
[2022-01-10 09:24:36,281 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 9
[2022-01-10 09:24:36,282 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 09:24:36,282 INFO  L470      AbstractCegarLoop]: Abstraction has 15 states and 18 transitions.
[2022-01-10 09:24:36,282 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:24:36,282 INFO  L276                IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions.
[2022-01-10 09:24:36,283 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2022-01-10 09:24:36,283 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:24:36,283 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 09:24:36,286 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-10 09:24:36,286 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 09:24:36,292 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:24:36,293 INFO  L85        PathProgramCache]: Analyzing trace with hash -2065977877, now seen corresponding path program 1 times
[2022-01-10 09:24:36,293 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:24:36,293 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100400957]
[2022-01-10 09:24:36,294 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:24:36,294 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:24:36,355 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:24:36,431 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 09:24:36,431 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 09:24:36,431 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100400957]
[2022-01-10 09:24:36,432 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100400957] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 09:24:36,432 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 09:24:36,432 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-10 09:24:36,432 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465709180]
[2022-01-10 09:24:36,432 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 09:24:36,433 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 09:24:36,433 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 09:24:36,435 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 09:24:36,435 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 09:24:36,436 INFO  L87              Difference]: Start difference. First operand 15 states and 18 transitions. Second operand  has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:24:36,479 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 09:24:36,479 INFO  L93              Difference]: Finished difference Result 28 states and 34 transitions.
[2022-01-10 09:24:36,480 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 09:24:36,480 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9
[2022-01-10 09:24:36,480 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 09:24:36,481 INFO  L225             Difference]: With dead ends: 28
[2022-01-10 09:24:36,481 INFO  L226             Difference]: Without dead ends: 17
[2022-01-10 09:24:36,481 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 09:24:36,482 INFO  L933         BasicCegarLoop]: 16 mSDtfsCounter, 1 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 09:24:36,483 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 25 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 09:24:36,484 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2022-01-10 09:24:36,487 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16.
[2022-01-10 09:24:36,487 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 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 09:24:36,487 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions.
[2022-01-10 09:24:36,488 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 9
[2022-01-10 09:24:36,488 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 09:24:36,488 INFO  L470      AbstractCegarLoop]: Abstraction has 16 states and 19 transitions.
[2022-01-10 09:24:36,488 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:24:36,488 INFO  L276                IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions.
[2022-01-10 09:24:36,489 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-01-10 09:24:36,489 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:24:36,489 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 09:24:36,489 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-01-10 09:24:36,489 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 09:24:36,490 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:24:36,490 INFO  L85        PathProgramCache]: Analyzing trace with hash -1486896183, now seen corresponding path program 1 times
[2022-01-10 09:24:36,490 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:24:36,491 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533938008]
[2022-01-10 09:24:36,491 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:24:36,491 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:24:36,527 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:24:36,569 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 09:24:36,569 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 09:24:36,570 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533938008]
[2022-01-10 09:24:36,570 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533938008] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 09:24:36,570 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 09:24:36,570 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-10 09:24:36,570 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177377231]
[2022-01-10 09:24:36,570 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 09:24:36,571 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 09:24:36,571 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 09:24:36,571 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 09:24:36,572 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 09:24:36,572 INFO  L87              Difference]: Start difference. First operand 16 states and 19 transitions. Second operand  has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 09:24:36,608 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 09:24:36,608 INFO  L93              Difference]: Finished difference Result 27 states and 32 transitions.
[2022-01-10 09:24:36,608 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 09:24:36,608 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) Word has length 11
[2022-01-10 09:24:36,609 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 09:24:36,611 INFO  L225             Difference]: With dead ends: 27
[2022-01-10 09:24:36,611 INFO  L226             Difference]: Without dead ends: 20
[2022-01-10 09:24:36,615 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 09:24:36,617 INFO  L933         BasicCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 09:24:36,617 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 22 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 09:24:36,618 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2022-01-10 09:24:36,620 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17.
[2022-01-10 09:24:36,620 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 09:24:36,621 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions.
[2022-01-10 09:24:36,621 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 11
[2022-01-10 09:24:36,621 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 09:24:36,621 INFO  L470      AbstractCegarLoop]: Abstraction has 17 states and 20 transitions.
[2022-01-10 09:24:36,622 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 09:24:36,622 INFO  L276                IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions.
[2022-01-10 09:24:36,622 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2022-01-10 09:24:36,622 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:24:36,622 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 09:24:36,623 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-01-10 09:24:36,623 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 09:24:36,623 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:24:36,623 INFO  L85        PathProgramCache]: Analyzing trace with hash 522993704, now seen corresponding path program 1 times
[2022-01-10 09:24:36,624 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:24:36,624 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097876500]
[2022-01-10 09:24:36,624 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:24:36,624 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:24:36,662 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:24:36,704 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-01-10 09:24:36,704 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 09:24:36,704 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097876500]
[2022-01-10 09:24:36,705 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097876500] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 09:24:36,705 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542855184]
[2022-01-10 09:24:36,705 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:24:36,705 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 09:24:36,705 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 09:24:36,707 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 09:24:36,735 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 09:24:36,833 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:24:36,835 INFO  L263         TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 6 conjunts are in the unsatisfiable core
[2022-01-10 09:24:36,839 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 09:24:36,970 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-01-10 09:24:36,970 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 09:24:37,022 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-01-10 09:24:37,023 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [542855184] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 09:24:37,023 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-10 09:24:37,023 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7
[2022-01-10 09:24:37,023 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327219825]
[2022-01-10 09:24:37,024 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-10 09:24:37,026 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-01-10 09:24:37,027 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 09:24:37,028 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-01-10 09:24:37,029 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2022-01-10 09:24:37,030 INFO  L87              Difference]: Start difference. First operand 17 states and 20 transitions. Second operand  has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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 09:24:37,212 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 09:24:37,212 INFO  L93              Difference]: Finished difference Result 41 states and 53 transitions.
[2022-01-10 09:24:37,213 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-01-10 09:24:37,214 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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 09:24:37,214 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 09:24:37,214 INFO  L225             Difference]: With dead ends: 41
[2022-01-10 09:24:37,214 INFO  L226             Difference]: Without dead ends: 29
[2022-01-10 09:24:37,215 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56
[2022-01-10 09:24:37,216 INFO  L933         BasicCegarLoop]: 13 mSDtfsCounter, 16 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-10 09:24:37,216 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 49 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-10 09:24:37,217 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2022-01-10 09:24:37,221 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29.
[2022-01-10 09:24:37,222 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 29 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 09:24:37,222 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions.
[2022-01-10 09:24:37,222 INFO  L78                 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 14
[2022-01-10 09:24:37,223 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 09:24:37,223 INFO  L470      AbstractCegarLoop]: Abstraction has 29 states and 34 transitions.
[2022-01-10 09:24:37,223 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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 09:24:37,223 INFO  L276                IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions.
[2022-01-10 09:24:37,224 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-01-10 09:24:37,224 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:24:37,224 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 09:24:37,231 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2022-01-10 09:24:37,424 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 09:24:37,425 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 09:24:37,426 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:24:37,426 INFO  L85        PathProgramCache]: Analyzing trace with hash -1350847186, now seen corresponding path program 2 times
[2022-01-10 09:24:37,426 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:24:37,426 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214520291]
[2022-01-10 09:24:37,426 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:24:37,426 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:24:37,542 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:24:37,653 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2022-01-10 09:24:37,654 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 09:24:37,654 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214520291]
[2022-01-10 09:24:37,654 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214520291] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 09:24:37,654 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558542093]
[2022-01-10 09:24:37,654 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-01-10 09:24:37,655 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 09:24:37,655 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 09:24:37,656 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 09:24:37,657 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 09:24:38,118 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-01-10 09:24:38,118 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 09:24:38,120 INFO  L263         TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 18 conjunts are in the unsatisfiable core
[2022-01-10 09:24:38,122 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 09:24:38,740 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2022-01-10 09:24:38,744 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 09:24:40,023 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2022-01-10 09:24:40,023 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558542093] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 09:24:40,024 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-10 09:24:40,024 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15
[2022-01-10 09:24:40,024 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606942606]
[2022-01-10 09:24:40,024 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-10 09:24:40,024 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2022-01-10 09:24:40,024 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 09:24:40,025 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2022-01-10 09:24:40,025 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210
[2022-01-10 09:24:40,026 INFO  L87              Difference]: Start difference. First operand 29 states and 34 transitions. Second operand  has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 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 09:24:50,128 WARN  L228               SmtUtils]: Spent 6.37s 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 09:25:10,443 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 09:25:10,443 INFO  L93              Difference]: Finished difference Result 69 states and 91 transitions.
[2022-01-10 09:25:10,444 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2022-01-10 09:25:10,444 INFO  L78                 Accepts]: Start accepts. Automaton has  has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 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 26
[2022-01-10 09:25:10,444 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 09:25:10,445 INFO  L225             Difference]: With dead ends: 69
[2022-01-10 09:25:10,445 INFO  L226             Difference]: Without dead ends: 51
[2022-01-10 09:25:10,446 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 31.0s TimeCoverageRelationStatistics Valid=208, Invalid=390, Unknown=2, NotChecked=0, Total=600
[2022-01-10 09:25:10,447 INFO  L933         BasicCegarLoop]: 15 mSDtfsCounter, 75 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2022-01-10 09:25:10,447 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 77 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 94 Invalid, 0 Unknown, 36 Unchecked, 0.7s Time]
[2022-01-10 09:25:10,447 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2022-01-10 09:25:10,457 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51.
[2022-01-10 09:25:10,457 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 51 states, 50 states have (on average 1.2) internal successors, (60), 50 states have internal predecessors, (60), 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 09:25:10,458 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions.
[2022-01-10 09:25:10,458 INFO  L78                 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 26
[2022-01-10 09:25:10,458 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 09:25:10,458 INFO  L470      AbstractCegarLoop]: Abstraction has 51 states and 60 transitions.
[2022-01-10 09:25:10,459 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 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 09:25:10,459 INFO  L276                IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions.
[2022-01-10 09:25:10,460 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 49
[2022-01-10 09:25:10,460 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:25:10,460 INFO  L514         BasicCegarLoop]: trace histogram [9, 9, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 09:25:10,467 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 09:25:10,665 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 09:25:10,665 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 09:25:10,665 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:25:10,665 INFO  L85        PathProgramCache]: Analyzing trace with hash 1340645976, now seen corresponding path program 3 times
[2022-01-10 09:25:10,666 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:25:10,666 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100065295]
[2022-01-10 09:25:10,666 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:25:10,666 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:25:10,828 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:25:11,008 INFO  L134       CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked.
[2022-01-10 09:25:11,008 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 09:25:11,008 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100065295]
[2022-01-10 09:25:11,008 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100065295] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 09:25:11,008 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510030101]
[2022-01-10 09:25:11,008 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-01-10 09:25:11,009 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 09:25:11,009 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 09:25:11,010 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 09:25:11,011 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 09:25:34,342 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s)
[2022-01-10 09:25:34,342 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 09:25:34,361 INFO  L263         TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 46 conjunts are in the unsatisfiable core
[2022-01-10 09:25:34,370 INFO  L286         TraceCheckSpWp]: Computing forward predicates...