/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_SUM.epf -i ../../../trunk/examples/svcomp/array-examples/standard_copyInitSum_ground.i


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-11 02:55:01,641 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-11 02:55:01,643 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-11 02:55:01,686 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-11 02:55:01,686 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-11 02:55:01,688 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-11 02:55:01,690 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-11 02:55:01,694 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-11 02:55:01,696 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-11 02:55:01,699 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-01-11 02:55:01,700 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-11 02:55:01,700 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-11 02:55:01,701 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-11 02:55:01,701 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-11 02:55:01,702 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-11 02:55:01,702 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-11 02:55:01,703 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-11 02:55:01,703 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-11 02:55:01,704 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-11 02:55:01,705 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-11 02:55:01,707 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-11 02:55:01,710 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-11 02:55:01,711 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-11 02:55:01,713 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-11 02:55:01,714 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-11 02:55:01,714 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-11 02:55:01,714 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-11 02:55:01,715 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-11 02:55:01,715 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-11 02:55:01,715 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-11 02:55:01,716 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-11 02:55:01,716 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-11 02:55:01,716 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-11 02:55:01,717 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-11 02:55:01,717 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-11 02:55:01,717 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-11 02:55:01,718 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-11 02:55:01,718 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-11 02:55:01,718 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-11 02:55:01,719 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-11 02:55:01,723 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf
[2022-01-11 02:55:01,747 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-11 02:55:01,747 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-11 02:55:01,748 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-11 02:55:01,748 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-11 02:55:01,748 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-11 02:55:01,749 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-11 02:55:01,749 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-11 02:55:01,749 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-11 02:55:01,749 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-11 02:55:01,749 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-11 02:55:01,749 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-11 02:55:01,750 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-11 02:55:01,750 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-11 02:55:01,750 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-11 02:55:01,750 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-11 02:55:01,750 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-11 02:55:01,750 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-11 02:55:01,750 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-11 02:55:01,750 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-11 02:55:01,750 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-11 02:55:01,750 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-11 02:55:01,750 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-11 02:55:01,751 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-11 02:55:01,751 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-11 02:55:01,751 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-11 02:55:01,751 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-11 02:55:01,751 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-11 02:55:01,751 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-11 02:55:01,751 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-11 02:55:01,751 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-11 02:55:01,751 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-11 02:55:01,751 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-11 02:55:01,752 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-11 02:55:01,752 INFO  L138        SettingsManager]:  * TransformationType=BV_TO_INT_SUM
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-11 02:55:01,930 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-11 02:55:01,946 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-11 02:55:01,948 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-11 02:55:01,949 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-11 02:55:01,949 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-11 02:55:01,950 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copyInitSum_ground.i
[2022-01-11 02:55:02,007 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/205541df5/4ca89f17634444d6b8ceba1934427631/FLAGa601acf62
[2022-01-11 02:55:02,357 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-11 02:55:02,357 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copyInitSum_ground.i
[2022-01-11 02:55:02,361 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/205541df5/4ca89f17634444d6b8ceba1934427631/FLAGa601acf62
[2022-01-11 02:55:02,373 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/205541df5/4ca89f17634444d6b8ceba1934427631
[2022-01-11 02:55:02,375 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-11 02:55:02,375 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-11 02:55:02,376 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-11 02:55:02,376 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-11 02:55:02,378 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-11 02:55:02,379 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:55:02" (1/1) ...
[2022-01-11 02:55:02,379 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@472bcd02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:55:02, skipping insertion in model container
[2022-01-11 02:55:02,379 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:55:02" (1/1) ...
[2022-01-11 02:55:02,383 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-11 02:55:02,395 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-11 02:55:02,505 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_copyInitSum_ground.i[860,873]
[2022-01-11 02:55:02,514 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-11 02:55:02,520 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-11 02:55:02,527 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_copyInitSum_ground.i[860,873]
[2022-01-11 02:55:02,532 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-11 02:55:02,541 INFO  L208         MainTranslator]: Completed translation
[2022-01-11 02:55:02,541 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:55:02 WrapperNode
[2022-01-11 02:55:02,541 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-11 02:55:02,542 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-11 02:55:02,542 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-11 02:55:02,542 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-11 02:55:02,546 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:55:02" (1/1) ...
[2022-01-11 02:55:02,551 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:55:02" (1/1) ...
[2022-01-11 02:55:02,562 INFO  L137                Inliner]: procedures = 18, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69
[2022-01-11 02:55:02,562 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-11 02:55:02,563 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-11 02:55:02,563 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-11 02:55:02,563 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-11 02:55:02,568 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:55:02" (1/1) ...
[2022-01-11 02:55:02,568 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:55:02" (1/1) ...
[2022-01-11 02:55:02,570 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:55:02" (1/1) ...
[2022-01-11 02:55:02,570 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:55:02" (1/1) ...
[2022-01-11 02:55:02,574 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:55:02" (1/1) ...
[2022-01-11 02:55:02,577 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:55:02" (1/1) ...
[2022-01-11 02:55:02,578 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:55:02" (1/1) ...
[2022-01-11 02:55:02,579 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-11 02:55:02,579 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-11 02:55:02,579 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-11 02:55:02,580 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-11 02:55:02,584 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:55:02" (1/1) ...
[2022-01-11 02:55:02,589 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-11 02:55:02,596 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:55:02,604 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)
[2022-01-11 02:55:02,613 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
[2022-01-11 02:55:02,634 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-11 02:55:02,634 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-11 02:55:02,634 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2022-01-11 02:55:02,634 INFO  L130     BoogieDeclarations]: Found specification of procedure read~intINTTYPE4
[2022-01-11 02:55:02,634 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-11 02:55:02,634 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-11 02:55:02,634 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-01-11 02:55:02,635 INFO  L130     BoogieDeclarations]: Found specification of procedure write~intINTTYPE4
[2022-01-11 02:55:02,676 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-11 02:55:02,677 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-11 02:55:02,786 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-11 02:55:02,791 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-11 02:55:02,791 INFO  L299             CfgBuilder]: Removed 4 assume(true) statements.
[2022-01-11 02:55:02,795 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:55:02 BoogieIcfgContainer
[2022-01-11 02:55:02,795 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-11 02:55:02,796 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-11 02:55:02,796 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-11 02:55:02,797 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-11 02:55:02,798 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:55:02" (1/1) ...
[2022-01-11 02:55:02,927 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:55:02 BasicIcfg
[2022-01-11 02:55:02,927 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-11 02:55:02,928 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-11 02:55:02,928 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-11 02:55:02,931 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-11 02:55:02,931 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 02:55:02" (1/4) ...
[2022-01-11 02:55:02,932 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b35fcea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:55:02, skipping insertion in model container
[2022-01-11 02:55:02,932 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:55:02" (2/4) ...
[2022-01-11 02:55:02,932 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b35fcea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:55:02, skipping insertion in model container
[2022-01-11 02:55:02,932 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:55:02" (3/4) ...
[2022-01-11 02:55:02,932 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b35fcea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 02:55:02, skipping insertion in model container
[2022-01-11 02:55:02,932 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:55:02" (4/4) ...
[2022-01-11 02:55:02,933 INFO  L111   eAbstractionObserver]: Analyzing ICFG standard_copyInitSum_ground.iTransformedIcfg
[2022-01-11 02:55:02,936 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-11 02:55:02,936 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-11 02:55:02,968 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-11 02:55:02,974 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
[2022-01-11 02:55:02,974 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-11 02:55:02,985 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:55:02,988 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-01-11 02:55:02,988 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:55:02,988 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 02:55:02,989 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 02:55:02,992 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:55:02,992 INFO  L85        PathProgramCache]: Analyzing trace with hash -1668084815, now seen corresponding path program 1 times
[2022-01-11 02:55:02,997 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:55:02,997 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443751712]
[2022-01-11 02:55:02,998 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:55:02,998 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:55:03,059 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:55:03,117 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 02:55:03,117 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:55:03,117 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443751712]
[2022-01-11 02:55:03,118 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443751712] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-11 02:55:03,118 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-11 02:55:03,118 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-11 02:55:03,119 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098352894]
[2022-01-11 02:55:03,120 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-11 02:55:03,122 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-11 02:55:03,122 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 02:55:03,140 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-11 02:55:03,141 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-11 02:55:03,142 INFO  L87              Difference]: Start difference. First operand  has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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)
[2022-01-11 02:55:03,150 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 02:55:03,150 INFO  L93              Difference]: Finished difference Result 37 states and 51 transitions.
[2022-01-11 02:55:03,151 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-11 02:55:03,152 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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
[2022-01-11 02:55:03,152 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 02:55:03,157 INFO  L225             Difference]: With dead ends: 37
[2022-01-11 02:55:03,157 INFO  L226             Difference]: Without dead ends: 16
[2022-01-11 02:55:03,159 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
[2022-01-11 02:55:03,161 INFO  L933         BasicCegarLoop]: 23 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, 23 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
[2022-01-11 02:55:03,162 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-11 02:55:03,174 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16 states.
[2022-01-11 02:55:03,182 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16.
[2022-01-11 02:55:03,183 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)
[2022-01-11 02:55:03,184 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions.
[2022-01-11 02:55:03,184 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11
[2022-01-11 02:55:03,184 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 02:55:03,185 INFO  L470      AbstractCegarLoop]: Abstraction has 16 states and 19 transitions.
[2022-01-11 02:55:03,185 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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)
[2022-01-11 02:55:03,185 INFO  L276                IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions.
[2022-01-11 02:55:03,185 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-01-11 02:55:03,185 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:55:03,185 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 02:55:03,186 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-11 02:55:03,186 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 02:55:03,186 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:55:03,186 INFO  L85        PathProgramCache]: Analyzing trace with hash 1707855220, now seen corresponding path program 1 times
[2022-01-11 02:55:03,187 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:55:03,187 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640602977]
[2022-01-11 02:55:03,187 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:55:03,187 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:55:03,219 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:55:03,260 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 02:55:03,260 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:55:03,260 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640602977]
[2022-01-11 02:55:03,260 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640602977] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-11 02:55:03,261 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-11 02:55:03,261 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-11 02:55:03,261 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030021314]
[2022-01-11 02:55:03,261 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-11 02:55:03,262 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-11 02:55:03,262 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 02:55:03,262 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-11 02:55:03,263 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-11 02:55:03,263 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)
[2022-01-11 02:55:03,291 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 02:55:03,291 INFO  L93              Difference]: Finished difference Result 34 states and 42 transitions.
[2022-01-11 02:55:03,291 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-11 02:55:03,291 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
[2022-01-11 02:55:03,292 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 02:55:03,292 INFO  L225             Difference]: With dead ends: 34
[2022-01-11 02:55:03,292 INFO  L226             Difference]: Without dead ends: 21
[2022-01-11 02:55:03,292 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
[2022-01-11 02:55:03,293 INFO  L933         BasicCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-11 02:55:03,294 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 22 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-11 02:55:03,294 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21 states.
[2022-01-11 02:55:03,297 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19.
[2022-01-11 02:55:03,297 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 19 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:55:03,297 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions.
[2022-01-11 02:55:03,298 INFO  L78                 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 11
[2022-01-11 02:55:03,298 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 02:55:03,298 INFO  L470      AbstractCegarLoop]: Abstraction has 19 states and 22 transitions.
[2022-01-11 02:55:03,298 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)
[2022-01-11 02:55:03,298 INFO  L276                IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions.
[2022-01-11 02:55:03,298 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2022-01-11 02:55:03,299 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:55:03,299 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 02:55:03,299 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-01-11 02:55:03,299 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 02:55:03,299 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:55:03,299 INFO  L85        PathProgramCache]: Analyzing trace with hash 1618539305, now seen corresponding path program 1 times
[2022-01-11 02:55:03,300 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:55:03,300 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906086831]
[2022-01-11 02:55:03,300 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:55:03,300 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:55:03,395 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:55:03,455 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2022-01-11 02:55:03,456 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:55:03,456 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906086831]
[2022-01-11 02:55:03,456 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906086831] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-11 02:55:03,456 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278868311]
[2022-01-11 02:55:03,456 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:55:03,457 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:55:03,457 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:55:03,459 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)
[2022-01-11 02:55:03,460 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-01-11 02:55:03,579 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:55:03,581 INFO  L263         TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 6 conjunts are in the unsatisfiable core
[2022-01-11 02:55:03,584 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-11 02:55:03,734 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2022-01-11 02:55:03,734 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-11 02:55:03,801 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2022-01-11 02:55:03,802 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [278868311] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-11 02:55:03,802 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-11 02:55:03,802 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7
[2022-01-11 02:55:03,802 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040626462]
[2022-01-11 02:55:03,802 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-11 02:55:03,803 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-01-11 02:55:03,803 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 02:55:03,803 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-01-11 02:55:03,803 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2022-01-11 02:55:03,803 INFO  L87              Difference]: Start difference. First operand 19 states and 22 transitions. Second operand  has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 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)
[2022-01-11 02:55:03,965 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 02:55:03,966 INFO  L93              Difference]: Finished difference Result 49 states and 63 transitions.
[2022-01-11 02:55:03,966 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-01-11 02:55:03,966 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 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 16
[2022-01-11 02:55:03,967 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 02:55:03,967 INFO  L225             Difference]: With dead ends: 49
[2022-01-11 02:55:03,967 INFO  L226             Difference]: Without dead ends: 34
[2022-01-11 02:55:03,967 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56
[2022-01-11 02:55:03,968 INFO  L933         BasicCegarLoop]: 14 mSDtfsCounter, 16 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-11 02:55:03,968 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 30 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-11 02:55:03,969 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2022-01-11 02:55:03,973 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34.
[2022-01-11 02:55:03,974 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 34 states, 33 states have (on average 1.121212121212121) internal successors, (37), 33 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)
[2022-01-11 02:55:03,974 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions.
[2022-01-11 02:55:03,974 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 16
[2022-01-11 02:55:03,974 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 02:55:03,975 INFO  L470      AbstractCegarLoop]: Abstraction has 34 states and 37 transitions.
[2022-01-11 02:55:03,975 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 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)
[2022-01-11 02:55:03,975 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions.
[2022-01-11 02:55:03,975 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2022-01-11 02:55:03,975 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:55:03,975 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 02:55:03,982 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2022-01-11 02:55:04,180 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:55:04,181 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 02:55:04,181 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:55:04,181 INFO  L85        PathProgramCache]: Analyzing trace with hash 1389264420, now seen corresponding path program 2 times
[2022-01-11 02:55:04,181 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:55:04,181 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900553728]
[2022-01-11 02:55:04,182 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:55:04,182 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:55:04,309 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:55:04,417 INFO  L134       CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked.
[2022-01-11 02:55:04,417 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:55:04,417 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900553728]
[2022-01-11 02:55:04,418 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900553728] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-11 02:55:04,420 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923490931]
[2022-01-11 02:55:04,420 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-01-11 02:55:04,420 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:55:04,421 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:55:04,444 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)
[2022-01-11 02:55:04,464 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-01-11 02:55:04,790 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-01-11 02:55:04,791 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-11 02:55:04,793 INFO  L263         TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 33 conjunts are in the unsatisfiable core
[2022-01-11 02:55:04,796 INFO  L286         TraceCheckSpWp]: Computing forward predicates...