/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/array-examples/standard_copy6_ground-1.i


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 09:26:11,473 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 09:26:11,475 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 09:26:11,526 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 09:26:11,526 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 09:26:11,528 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 09:26:11,531 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-10 09:26:11,533 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-10 09:26:11,535 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-10 09:26:11,539 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-01-10 09:26:11,540 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 09:26:11,540 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 09:26:11,541 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 09:26:11,541 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 09:26:11,542 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 09:26:11,542 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 09:26:11,543 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 09:26:11,544 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 09:26:11,545 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 09:26:11,545 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 09:26:11,547 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 09:26:11,550 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 09:26:11,551 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 09:26:11,556 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 09:26:11,556 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 09:26:11,556 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 09:26:11,557 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 09:26:11,557 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 09:26:11,558 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 09:26:11,558 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 09:26:11,558 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 09:26:11,560 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 09:26:11,560 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 09:26:11,561 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 09:26:11,561 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 09:26:11,561 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 09:26:11,562 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 09:26:11,562 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-10 09:26:11,562 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-10 09:26:11,563 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 09:26:11,563 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 09:26:11,588 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 09:26:11,588 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 09:26:11,589 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 09:26:11,589 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 09:26:11,590 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 09:26:11,590 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 09:26:11,590 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 09:26:11,590 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 09:26:11,590 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 09:26:11,590 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 09:26:11,591 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 09:26:11,591 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 09:26:11,591 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 09:26:11,591 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 09:26:11,591 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 09:26:11,591 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 09:26:11,591 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 09:26:11,592 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 09:26:11,592 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 09:26:11,592 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 09:26:11,592 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 09:26:11,592 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 09:26:11,592 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 09:26:11,592 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 09:26:11,592 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 09:26:11,592 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-10 09:26:11,592 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-10 09:26:11,592 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 09:26:11,593 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 09:26:11,593 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 09:26:11,593 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-10 09:26:11,593 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 09:26:11,594 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-10 09:26:11,594 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 09:26:11,797 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 09:26:11,823 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 09:26:11,825 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 09:26:11,825 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 09:26:11,828 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 09:26:11,828 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy6_ground-1.i
[2022-01-10 09:26:11,880 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/876fa427f/30d90ee41b3f4bb297f87a2e49138935/FLAGdec8d2d23
[2022-01-10 09:26:12,220 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 09:26:12,221 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy6_ground-1.i
[2022-01-10 09:26:12,225 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/876fa427f/30d90ee41b3f4bb297f87a2e49138935/FLAGdec8d2d23
[2022-01-10 09:26:12,663 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/876fa427f/30d90ee41b3f4bb297f87a2e49138935
[2022-01-10 09:26:12,665 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 09:26:12,666 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-10 09:26:12,667 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 09:26:12,668 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 09:26:12,670 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 09:26:12,670 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:26:12" (1/1) ...
[2022-01-10 09:26:12,671 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f62221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:26:12, skipping insertion in model container
[2022-01-10 09:26:12,671 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:26:12" (1/1) ...
[2022-01-10 09:26:12,675 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 09:26:12,685 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 09:26:12,806 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy6_ground-1.i[816,829]
[2022-01-10 09:26:12,819 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 09:26:12,825 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 09:26:12,833 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy6_ground-1.i[816,829]
[2022-01-10 09:26:12,843 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 09:26:12,853 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 09:26:12,853 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:26:12 WrapperNode
[2022-01-10 09:26:12,854 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 09:26:12,854 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 09:26:12,854 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 09:26:12,854 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 09:26:12,859 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:26:12" (1/1) ...
[2022-01-10 09:26:12,872 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:26:12" (1/1) ...
[2022-01-10 09:26:12,896 INFO  L137                Inliner]: procedures = 18, calls = 44, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 145
[2022-01-10 09:26:12,896 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 09:26:12,896 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 09:26:12,897 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 09:26:12,897 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 09:26:12,902 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:26:12" (1/1) ...
[2022-01-10 09:26:12,902 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:26:12" (1/1) ...
[2022-01-10 09:26:12,913 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:26:12" (1/1) ...
[2022-01-10 09:26:12,913 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:26:12" (1/1) ...
[2022-01-10 09:26:12,924 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:26:12" (1/1) ...
[2022-01-10 09:26:12,927 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:26:12" (1/1) ...
[2022-01-10 09:26:12,928 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:26:12" (1/1) ...
[2022-01-10 09:26:12,930 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 09:26:12,930 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 09:26:12,931 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 09:26:12,931 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 09:26:12,936 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:26:12" (1/1) ...
[2022-01-10 09:26:12,941 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 09:26:12,949 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 09:26:12,975 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 09:26:12,994 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 09:26:13,009 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 09:26:13,010 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 09:26:13,010 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2022-01-10 09:26:13,010 INFO  L130     BoogieDeclarations]: Found specification of procedure read~intINTTYPE4
[2022-01-10 09:26:13,010 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 09:26:13,010 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 09:26:13,010 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-01-10 09:26:13,010 INFO  L130     BoogieDeclarations]: Found specification of procedure write~intINTTYPE4
[2022-01-10 09:26:13,082 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 09:26:13,083 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 09:26:13,335 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 09:26:13,339 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 09:26:13,339 INFO  L299             CfgBuilder]: Removed 8 assume(true) statements.
[2022-01-10 09:26:13,346 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:26:13 BoogieIcfgContainer
[2022-01-10 09:26:13,346 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 09:26:13,347 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-10 09:26:13,347 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-10 09:26:13,348 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-10 09:26:13,350 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:26:13" (1/1) ...
[2022-01-10 09:26:13,512 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:26:13 BasicIcfg
[2022-01-10 09:26:13,512 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-10 09:26:13,514 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 09:26:13,514 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 09:26:13,516 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 09:26:13,517 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:26:12" (1/4) ...
[2022-01-10 09:26:13,517 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ea1d3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:26:13, skipping insertion in model container
[2022-01-10 09:26:13,517 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:26:12" (2/4) ...
[2022-01-10 09:26:13,518 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ea1d3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:26:13, skipping insertion in model container
[2022-01-10 09:26:13,518 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:26:13" (3/4) ...
[2022-01-10 09:26:13,518 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ea1d3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:26:13, skipping insertion in model container
[2022-01-10 09:26:13,518 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:26:13" (4/4) ...
[2022-01-10 09:26:13,519 INFO  L111   eAbstractionObserver]: Analyzing ICFG standard_copy6_ground-1.iTransformedIcfg
[2022-01-10 09:26:13,523 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 09:26:13,523 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 09:26:13,564 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 09:26:13,569 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 09:26:13,570 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 09:26:13,583 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 33 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 32 states have internal predecessors, (49), 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 09:26:13,586 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2022-01-10 09:26:13,586 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:26:13,587 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 09:26:13,587 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 09:26:13,594 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:26:13,594 INFO  L85        PathProgramCache]: Analyzing trace with hash 1968289075, now seen corresponding path program 1 times
[2022-01-10 09:26:13,600 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:26:13,601 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039711295]
[2022-01-10 09:26:13,601 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:26:13,602 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:26:13,735 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:26:13,822 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 09:26:13,823 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 09:26:13,823 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039711295]
[2022-01-10 09:26:13,824 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039711295] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 09:26:13,825 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 09:26:13,825 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 09:26:13,826 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837222212]
[2022-01-10 09:26:13,827 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 09:26:13,829 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-10 09:26:13,830 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 09:26:13,849 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-10 09:26:13,850 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 09:26:13,851 INFO  L87              Difference]: Start difference. First operand  has 33 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 32 states have internal predecessors, (49), 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 9.5) internal successors, (19), 2 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 09:26:13,865 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 09:26:13,866 INFO  L93              Difference]: Finished difference Result 62 states and 92 transitions.
[2022-01-10 09:26:13,866 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-10 09:26:13,868 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 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) Word has length 19
[2022-01-10 09:26:13,868 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 09:26:13,874 INFO  L225             Difference]: With dead ends: 62
[2022-01-10 09:26:13,874 INFO  L226             Difference]: Without dead ends: 29
[2022-01-10 09:26:13,877 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 09:26:13,882 INFO  L933         BasicCegarLoop]: 40 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, 40 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 09:26:13,883 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 09:26:13,894 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2022-01-10 09:26:13,909 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29.
[2022-01-10 09:26:13,910 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 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 09:26:13,912 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions.
[2022-01-10 09:26:13,913 INFO  L78                 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 19
[2022-01-10 09:26:13,913 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 09:26:13,913 INFO  L470      AbstractCegarLoop]: Abstraction has 29 states and 36 transitions.
[2022-01-10 09:26:13,914 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 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 09:26:13,915 INFO  L276                IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions.
[2022-01-10 09:26:13,915 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2022-01-10 09:26:13,915 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:26:13,916 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 09:26:13,916 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-10 09:26:13,916 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 09:26:13,918 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:26:13,918 INFO  L85        PathProgramCache]: Analyzing trace with hash 1819768954, now seen corresponding path program 1 times
[2022-01-10 09:26:13,918 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:26:13,918 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378197195]
[2022-01-10 09:26:13,919 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:26:13,919 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:26:14,016 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:26:14,080 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 09:26:14,081 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 09:26:14,081 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378197195]
[2022-01-10 09:26:14,081 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378197195] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 09:26:14,081 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 09:26:14,081 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-10 09:26:14,082 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944592625]
[2022-01-10 09:26:14,082 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 09:26:14,083 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 09:26:14,084 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 09:26:14,084 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 09:26:14,085 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 09:26:14,085 INFO  L87              Difference]: Start difference. First operand 29 states and 36 transitions. Second operand  has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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 09:26:14,104 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 09:26:14,104 INFO  L93              Difference]: Finished difference Result 56 states and 70 transitions.
[2022-01-10 09:26:14,104 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 09:26:14,104 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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) Word has length 19
[2022-01-10 09:26:14,105 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 09:26:14,106 INFO  L225             Difference]: With dead ends: 56
[2022-01-10 09:26:14,106 INFO  L226             Difference]: Without dead ends: 31
[2022-01-10 09:26:14,110 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 09:26:14,111 INFO  L933         BasicCegarLoop]: 34 mSDtfsCounter, 1 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 09:26:14,111 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 66 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 09:26:14,113 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2022-01-10 09:26:14,117 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30.
[2022-01-10 09:26:14,117 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 30 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 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 09:26:14,118 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions.
[2022-01-10 09:26:14,118 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 19
[2022-01-10 09:26:14,118 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 09:26:14,119 INFO  L470      AbstractCegarLoop]: Abstraction has 30 states and 37 transitions.
[2022-01-10 09:26:14,119 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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 09:26:14,121 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions.
[2022-01-10 09:26:14,122 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2022-01-10 09:26:14,126 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:26:14,126 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 09:26:14,127 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-01-10 09:26:14,127 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 09:26:14,127 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:26:14,127 INFO  L85        PathProgramCache]: Analyzing trace with hash 501617848, now seen corresponding path program 1 times
[2022-01-10 09:26:14,127 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:26:14,127 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677393319]
[2022-01-10 09:26:14,128 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:26:14,128 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:26:14,186 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:26:14,235 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 09:26:14,235 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 09:26:14,235 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677393319]
[2022-01-10 09:26:14,236 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677393319] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 09:26:14,236 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 09:26:14,236 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-10 09:26:14,236 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175295713]
[2022-01-10 09:26:14,236 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 09:26:14,236 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 09:26:14,237 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 09:26:14,237 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 09:26:14,237 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 09:26:14,238 INFO  L87              Difference]: Start difference. First operand 30 states and 37 transitions. Second operand  has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 09:26:14,348 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 09:26:14,349 INFO  L93              Difference]: Finished difference Result 64 states and 82 transitions.
[2022-01-10 09:26:14,349 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 09:26:14,349 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21
[2022-01-10 09:26:14,350 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 09:26:14,351 INFO  L225             Difference]: With dead ends: 64
[2022-01-10 09:26:14,351 INFO  L226             Difference]: Without dead ends: 42
[2022-01-10 09:26:14,351 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 09:26:14,352 INFO  L933         BasicCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-10 09:26:14,352 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 35 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-10 09:26:14,352 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 42 states.
[2022-01-10 09:26:14,355 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36.
[2022-01-10 09:26:14,355 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 36 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 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 09:26:14,359 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions.
[2022-01-10 09:26:14,359 INFO  L78                 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 21
[2022-01-10 09:26:14,359 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 09:26:14,359 INFO  L470      AbstractCegarLoop]: Abstraction has 36 states and 43 transitions.
[2022-01-10 09:26:14,359 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 09:26:14,359 INFO  L276                IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions.
[2022-01-10 09:26:14,360 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2022-01-10 09:26:14,360 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:26:14,360 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 09:26:14,360 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-01-10 09:26:14,360 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 09:26:14,361 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:26:14,361 INFO  L85        PathProgramCache]: Analyzing trace with hash -1697491060, now seen corresponding path program 1 times
[2022-01-10 09:26:14,361 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:26:14,361 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111515720]
[2022-01-10 09:26:14,361 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:26:14,361 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:26:14,463 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:26:14,520 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2022-01-10 09:26:14,521 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 09:26:14,521 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111515720]
[2022-01-10 09:26:14,521 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111515720] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 09:26:14,521 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627460188]
[2022-01-10 09:26:14,521 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:26:14,521 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 09:26:14,522 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 09:26:14,523 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 09:26:14,584 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 09:26:14,754 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:26:14,757 INFO  L263         TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-01-10 09:26:14,761 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 09:26:15,023 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2022-01-10 09:26:15,024 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 09:26:15,110 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2022-01-10 09:26:15,110 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [627460188] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 09:26:15,110 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-10 09:26:15,110 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7
[2022-01-10 09:26:15,111 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353519159]
[2022-01-10 09:26:15,111 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-10 09:26:15,113 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-01-10 09:26:15,113 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 09:26:15,113 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-01-10 09:26:15,113 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2022-01-10 09:26:15,113 INFO  L87              Difference]: Start difference. First operand 36 states and 43 transitions. Second operand  has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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 09:26:15,185 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 09:26:15,185 INFO  L93              Difference]: Finished difference Result 73 states and 89 transitions.
[2022-01-10 09:26:15,188 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-01-10 09:26:15,188 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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 33
[2022-01-10 09:26:15,188 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 09:26:15,188 INFO  L225             Difference]: With dead ends: 73
[2022-01-10 09:26:15,188 INFO  L226             Difference]: Without dead ends: 42
[2022-01-10 09:26:15,189 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 62 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 09:26:15,189 INFO  L933         BasicCegarLoop]: 34 mSDtfsCounter, 5 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 09:26:15,190 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 98 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 09:26:15,190 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 42 states.
[2022-01-10 09:26:15,193 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42.
[2022-01-10 09:26:15,193 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 42 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 states have internal predecessors, (49), 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 09:26:15,193 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions.
[2022-01-10 09:26:15,194 INFO  L78                 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 33
[2022-01-10 09:26:15,194 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 09:26:15,194 INFO  L470      AbstractCegarLoop]: Abstraction has 42 states and 49 transitions.
[2022-01-10 09:26:15,194 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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 09:26:15,194 INFO  L276                IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions.
[2022-01-10 09:26:15,194 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2022-01-10 09:26:15,195 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:26:15,195 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 09:26:15,207 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-01-10 09:26:15,401 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 09:26:15,402 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 09:26:15,403 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:26:15,403 INFO  L85        PathProgramCache]: Analyzing trace with hash -499034042, now seen corresponding path program 2 times
[2022-01-10 09:26:15,403 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:26:15,403 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344220376]
[2022-01-10 09:26:15,403 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:26:15,403 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:26:15,492 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:26:15,561 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2022-01-10 09:26:15,562 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 09:26:15,562 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344220376]
[2022-01-10 09:26:15,562 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344220376] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 09:26:15,562 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912142241]
[2022-01-10 09:26:15,562 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-01-10 09:26:15,562 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 09:26:15,562 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 09:26:15,576 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 09:26:15,610 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 09:26:15,854 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-01-10 09:26:15,854 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 09:26:15,858 INFO  L263         TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 10 conjunts are in the unsatisfiable core
[2022-01-10 09:26:15,859 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 09:26:16,024 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2022-01-10 09:26:16,024 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 09:26:16,158 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2022-01-10 09:26:16,158 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [912142241] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 09:26:16,158 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-10 09:26:16,158 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9
[2022-01-10 09:26:16,158 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320787012]
[2022-01-10 09:26:16,158 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-10 09:26:16,159 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2022-01-10 09:26:16,161 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 09:26:16,161 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2022-01-10 09:26:16,161 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2022-01-10 09:26:16,161 INFO  L87              Difference]: Start difference. First operand 42 states and 49 transitions. Second operand  has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 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 09:26:16,742 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 09:26:16,742 INFO  L93              Difference]: Finished difference Result 105 states and 135 transitions.
[2022-01-10 09:26:16,742 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2022-01-10 09:26:16,743 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 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 39
[2022-01-10 09:26:16,743 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 09:26:16,743 INFO  L225             Difference]: With dead ends: 105
[2022-01-10 09:26:16,743 INFO  L226             Difference]: Without dead ends: 78
[2022-01-10 09:26:16,744 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90
[2022-01-10 09:26:16,744 INFO  L933         BasicCegarLoop]: 22 mSDtfsCounter, 41 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-01-10 09:26:16,744 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 89 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-01-10 09:26:16,745 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 78 states.
[2022-01-10 09:26:16,751 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78.
[2022-01-10 09:26:16,751 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 78 states, 77 states have (on average 1.103896103896104) internal successors, (85), 77 states have internal predecessors, (85), 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 09:26:16,752 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions.
[2022-01-10 09:26:16,752 INFO  L78                 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 39
[2022-01-10 09:26:16,752 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 09:26:16,752 INFO  L470      AbstractCegarLoop]: Abstraction has 78 states and 85 transitions.
[2022-01-10 09:26:16,752 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 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 09:26:16,752 INFO  L276                IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions.
[2022-01-10 09:26:16,753 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 76
[2022-01-10 09:26:16,753 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 09:26:16,754 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 09:26:16,781 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 09:26:16,954 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 09:26:16,955 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 09:26:16,955 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 09:26:16,955 INFO  L85        PathProgramCache]: Analyzing trace with hash 1766737858, now seen corresponding path program 3 times
[2022-01-10 09:26:16,955 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 09:26:16,955 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238350544]
[2022-01-10 09:26:16,955 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 09:26:16,955 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 09:26:17,180 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 09:26:17,256 INFO  L134       CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked.
[2022-01-10 09:26:17,256 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 09:26:17,256 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238350544]
[2022-01-10 09:26:17,257 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238350544] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 09:26:17,257 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109693946]
[2022-01-10 09:26:17,257 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-01-10 09:26:17,257 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 09:26:17,257 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 09:26:17,272 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 09:26:17,273 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 09:26:30,884 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2022-01-10 09:26:30,884 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 09:26:30,926 INFO  L263         TraceCheckSpWp]: Trace formula consists of 956 conjuncts, 113 conjunts are in the unsatisfiable core
[2022-01-10 09:26:30,931 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 09:26:31,143 INFO  L134       CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked.
[2022-01-10 09:26:31,144 INFO  L328         TraceCheckSpWp]: Computing backward predicates...