/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/array-multidimensional/rev-3-u.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 21:26:30,884 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 21:26:30,885 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 21:26:30,913 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 21:26:30,913 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 21:26:30,914 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 21:26:30,914 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-10 21:26:30,916 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-10 21:26:30,917 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-10 21:26:30,918 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-01-10 21:26:30,918 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-01-10 21:26:30,919 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 21:26:30,919 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 21:26:30,920 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 21:26:30,921 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 21:26:30,921 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 21:26:30,922 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 21:26:30,922 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 21:26:30,924 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 21:26:30,926 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 21:26:30,930 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 21:26:30,936 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 21:26:30,937 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 21:26:30,938 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 21:26:30,939 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 21:26:30,940 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 21:26:30,940 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 21:26:30,940 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 21:26:30,941 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 21:26:30,941 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 21:26:30,942 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 21:26:30,942 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 21:26:30,942 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 21:26:30,943 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 21:26:30,944 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 21:26:30,944 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 21:26:30,944 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 21:26:30,945 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 21:26:30,945 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-10 21:26:30,945 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-10 21:26:30,946 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 21:26:30,954 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf
[2022-01-10 21:26:30,975 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 21:26:30,976 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 21:26:30,976 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 21:26:30,976 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 21:26:30,977 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 21:26:30,977 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 21:26:30,977 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 21:26:30,977 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 21:26:30,977 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 21:26:30,977 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 21:26:30,983 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 21:26:30,983 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 21:26:30,983 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 21:26:30,984 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 21:26:30,984 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 21:26:30,984 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 21:26:30,984 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 21:26:30,984 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 21:26:30,984 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 21:26:30,984 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 21:26:30,984 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 21:26:30,985 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 21:26:30,985 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 21:26:30,985 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 21:26:30,985 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 21:26:30,985 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-10 21:26:30,985 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-10 21:26:30,985 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 21:26:30,985 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 21:26:30,985 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 21:26:30,985 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-10 21:26:30,985 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 21:26:30,986 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-10 21:26:30,986 INFO  L138        SettingsManager]:  * TransformationType=BV_TO_INT_NONE
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 21:26:31,132 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 21:26:31,165 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 21:26:31,167 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 21:26:31,167 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 21:26:31,168 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 21:26:31,168 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/rev-3-u.c
[2022-01-10 21:26:31,212 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e4b8609e/d6a12544b1a04d8d9775f032f5dcec84/FLAG9b0f4a065
[2022-01-10 21:26:31,555 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 21:26:31,555 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/rev-3-u.c
[2022-01-10 21:26:31,562 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e4b8609e/d6a12544b1a04d8d9775f032f5dcec84/FLAG9b0f4a065
[2022-01-10 21:26:31,574 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e4b8609e/d6a12544b1a04d8d9775f032f5dcec84
[2022-01-10 21:26:31,576 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 21:26:31,577 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-10 21:26:31,579 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 21:26:31,579 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 21:26:31,582 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 21:26:31,583 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:26:31" (1/1) ...
[2022-01-10 21:26:31,584 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@409eb6ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:26:31, skipping insertion in model container
[2022-01-10 21:26:31,584 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:26:31" (1/1) ...
[2022-01-10 21:26:31,590 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 21:26:31,601 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 21:26:31,716 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-multidimensional/rev-3-u.c[319,332]
[2022-01-10 21:26:31,735 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 21:26:31,741 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 21:26:31,749 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-multidimensional/rev-3-u.c[319,332]
[2022-01-10 21:26:31,758 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 21:26:31,767 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 21:26:31,767 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:26:31 WrapperNode
[2022-01-10 21:26:31,767 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 21:26:31,768 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 21:26:31,768 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 21:26:31,769 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 21:26:31,776 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:26:31" (1/1) ...
[2022-01-10 21:26:31,782 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:26:31" (1/1) ...
[2022-01-10 21:26:31,795 INFO  L137                Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 105
[2022-01-10 21:26:31,796 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 21:26:31,796 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 21:26:31,796 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 21:26:31,796 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 21:26:31,801 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:26:31" (1/1) ...
[2022-01-10 21:26:31,801 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:26:31" (1/1) ...
[2022-01-10 21:26:31,813 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:26:31" (1/1) ...
[2022-01-10 21:26:31,813 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:26:31" (1/1) ...
[2022-01-10 21:26:31,820 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:26:31" (1/1) ...
[2022-01-10 21:26:31,824 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:26:31" (1/1) ...
[2022-01-10 21:26:31,825 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:26:31" (1/1) ...
[2022-01-10 21:26:31,827 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 21:26:31,827 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 21:26:31,827 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 21:26:31,827 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 21:26:31,828 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:26:31" (1/1) ...
[2022-01-10 21:26:31,838 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 21:26:31,857 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 21:26:31,872 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 21:26:31,873 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 21:26:31,897 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 21:26:31,897 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 21:26:31,898 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2022-01-10 21:26:31,898 INFO  L130     BoogieDeclarations]: Found specification of procedure read~intINTTYPE4
[2022-01-10 21:26:31,898 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 21:26:31,898 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 21:26:31,898 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-01-10 21:26:31,898 INFO  L130     BoogieDeclarations]: Found specification of procedure write~intINTTYPE4
[2022-01-10 21:26:31,944 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 21:26:31,945 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 21:26:33,122 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 21:26:33,126 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 21:26:33,126 INFO  L299             CfgBuilder]: Removed 9 assume(true) statements.
[2022-01-10 21:26:33,127 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:26:33 BoogieIcfgContainer
[2022-01-10 21:26:33,127 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 21:26:33,128 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-10 21:26:33,128 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-10 21:26:33,129 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-10 21:26:33,131 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:26:33" (1/1) ...
[2022-01-10 21:26:33,268 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:26:33 BasicIcfg
[2022-01-10 21:26:33,268 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-10 21:26:33,269 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 21:26:33,269 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 21:26:33,271 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 21:26:33,271 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:26:31" (1/4) ...
[2022-01-10 21:26:33,272 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b240c80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:26:33, skipping insertion in model container
[2022-01-10 21:26:33,272 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:26:31" (2/4) ...
[2022-01-10 21:26:33,272 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b240c80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:26:33, skipping insertion in model container
[2022-01-10 21:26:33,272 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:26:33" (3/4) ...
[2022-01-10 21:26:33,272 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b240c80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:26:33, skipping insertion in model container
[2022-01-10 21:26:33,272 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:26:33" (4/4) ...
[2022-01-10 21:26:33,273 INFO  L111   eAbstractionObserver]: Analyzing ICFG rev-3-u.cTransformedIcfg
[2022-01-10 21:26:33,277 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 21:26:33,277 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 21:26:33,307 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 21:26:33,314 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 21:26:33,315 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 21:26:33,323 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 27 states, 25 states have (on average 1.8) internal successors, (45), 26 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 21:26:33,326 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-01-10 21:26:33,326 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 21:26:33,326 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 21:26:33,327 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 21:26:33,332 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 21:26:33,332 INFO  L85        PathProgramCache]: Analyzing trace with hash -1070958566, now seen corresponding path program 1 times
[2022-01-10 21:26:33,337 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 21:26:33,337 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295121673]
[2022-01-10 21:26:33,337 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:26:33,338 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 21:26:33,412 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 21:26:33,412 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [657924840]
[2022-01-10 21:26:33,412 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:26:33,413 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 21:26:33,413 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 21:26:33,414 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 21:26:33,415 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 21:26:33,514 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 21:26:33,517 INFO  L263         TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 1 conjunts are in the unsatisfiable core
[2022-01-10 21:26:33,519 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 21:26:33,564 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 21:26:33,564 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 21:26:33,564 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 21:26:33,564 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295121673]
[2022-01-10 21:26:33,565 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-10 21:26:33,565 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657924840]
[2022-01-10 21:26:33,565 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [657924840] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 21:26:33,566 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 21:26:33,566 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 21:26:33,567 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584040853]
[2022-01-10 21:26:33,567 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 21:26:33,570 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-10 21:26:33,570 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 21:26:33,591 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-10 21:26:33,592 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 21:26:33,593 INFO  L87              Difference]: Start difference. First operand  has 27 states, 25 states have (on average 1.8) internal successors, (45), 26 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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)
[2022-01-10 21:26:33,605 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 21:26:33,605 INFO  L93              Difference]: Finished difference Result 52 states and 88 transitions.
[2022-01-10 21:26:33,606 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-10 21:26:33,606 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
[2022-01-10 21:26:33,606 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 21:26:33,611 INFO  L225             Difference]: With dead ends: 52
[2022-01-10 21:26:33,611 INFO  L226             Difference]: Without dead ends: 23
[2022-01-10 21:26:33,612 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 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 21:26:33,614 INFO  L933         BasicCegarLoop]: 35 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, 35 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 21:26:33,615 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 21:26:33,625 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2022-01-10 21:26:33,632 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23.
[2022-01-10 21:26:33,633 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 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 21:26:33,633 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions.
[2022-01-10 21:26:33,634 INFO  L78                 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 11
[2022-01-10 21:26:33,634 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 21:26:33,634 INFO  L470      AbstractCegarLoop]: Abstraction has 23 states and 31 transitions.
[2022-01-10 21:26:33,634 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)
[2022-01-10 21:26:33,634 INFO  L276                IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions.
[2022-01-10 21:26:33,635 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-01-10 21:26:33,635 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 21:26:33,635 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 21:26:33,651 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 21:26:33,851 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0
[2022-01-10 21:26:33,852 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 21:26:33,852 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 21:26:33,852 INFO  L85        PathProgramCache]: Analyzing trace with hash 1416554267, now seen corresponding path program 1 times
[2022-01-10 21:26:33,853 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 21:26:33,853 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889345813]
[2022-01-10 21:26:33,853 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:26:33,853 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 21:26:33,871 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 21:26:33,872 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1538937767]
[2022-01-10 21:26:33,872 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:26:33,872 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 21:26:33,872 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 21:26:33,874 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 21:26:33,876 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 21:26:33,974 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 21:26:33,975 INFO  L263         TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 6 conjunts are in the unsatisfiable core
[2022-01-10 21:26:33,977 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 21:26:34,232 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 21:26:34,232 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 21:26:34,232 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 21:26:34,232 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889345813]
[2022-01-10 21:26:34,232 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-10 21:26:34,232 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538937767]
[2022-01-10 21:26:34,233 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538937767] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 21:26:34,233 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 21:26:34,234 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-01-10 21:26:34,235 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822095835]
[2022-01-10 21:26:34,236 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 21:26:34,240 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-01-10 21:26:34,241 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 21:26:34,242 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-01-10 21:26:34,242 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-10 21:26:34,242 INFO  L87              Difference]: Start difference. First operand 23 states and 31 transitions. Second operand  has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 21:26:36,383 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers []
[2022-01-10 21:26:39,007 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers []
[2022-01-10 21:26:39,008 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 21:26:39,008 INFO  L93              Difference]: Finished difference Result 61 states and 83 transitions.
[2022-01-10 21:26:39,021 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-01-10 21:26:39,021 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11
[2022-01-10 21:26:39,021 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 21:26:39,022 INFO  L225             Difference]: With dead ends: 61
[2022-01-10 21:26:39,022 INFO  L226             Difference]: Without dead ends: 42
[2022-01-10 21:26:39,022 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-10 21:26:39,023 INFO  L933         BasicCegarLoop]: 20 mSDtfsCounter, 27 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time
[2022-01-10 21:26:39,023 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 47 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 42 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time]
[2022-01-10 21:26:39,024 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 42 states.
[2022-01-10 21:26:39,026 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 25.
[2022-01-10 21:26:39,026 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 25 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 21:26:39,027 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions.
[2022-01-10 21:26:39,027 INFO  L78                 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 11
[2022-01-10 21:26:39,027 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 21:26:39,027 INFO  L470      AbstractCegarLoop]: Abstraction has 25 states and 33 transitions.
[2022-01-10 21:26:39,027 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 21:26:39,027 INFO  L276                IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions.
[2022-01-10 21:26:39,028 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2022-01-10 21:26:39,028 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 21:26:39,028 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 21:26:39,046 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2022-01-10 21:26:39,233 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1
[2022-01-10 21:26:39,233 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 21:26:39,234 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 21:26:39,234 INFO  L85        PathProgramCache]: Analyzing trace with hash 326017175, now seen corresponding path program 1 times
[2022-01-10 21:26:39,234 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 21:26:39,234 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790218554]
[2022-01-10 21:26:39,234 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:26:39,234 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 21:26:39,278 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 21:26:39,278 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1886111820]
[2022-01-10 21:26:39,278 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:26:39,279 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 21:26:39,279 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 21:26:39,281 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 21:26:39,282 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 21:26:39,375 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 21:26:39,376 INFO  L263         TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 6 conjunts are in the unsatisfiable core
[2022-01-10 21:26:39,377 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 21:26:39,529 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-01-10 21:26:39,529 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 21:26:39,529 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 21:26:39,529 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790218554]
[2022-01-10 21:26:39,529 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-10 21:26:39,530 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886111820]
[2022-01-10 21:26:39,530 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886111820] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 21:26:39,530 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 21:26:39,530 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-10 21:26:39,530 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513603814]
[2022-01-10 21:26:39,530 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 21:26:39,530 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-10 21:26:39,530 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 21:26:39,531 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-10 21:26:39,531 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-10 21:26:39,531 INFO  L87              Difference]: Start difference. First operand 25 states and 33 transitions. Second operand  has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 21:26:40,197 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 21:26:40,198 INFO  L93              Difference]: Finished difference Result 77 states and 105 transitions.
[2022-01-10 21:26:40,199 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-01-10 21:26:40,199 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17
[2022-01-10 21:26:40,199 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 21:26:40,200 INFO  L225             Difference]: With dead ends: 77
[2022-01-10 21:26:40,200 INFO  L226             Difference]: Without dead ends: 55
[2022-01-10 21:26:40,200 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-10 21:26:40,201 INFO  L933         BasicCegarLoop]: 13 mSDtfsCounter, 47 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2022-01-10 21:26:40,201 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 35 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2022-01-10 21:26:40,202 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2022-01-10 21:26:40,205 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 29.
[2022-01-10 21:26:40,205 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 29 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 28 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 21:26:40,206 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions.
[2022-01-10 21:26:40,206 INFO  L78                 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 17
[2022-01-10 21:26:40,206 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 21:26:40,206 INFO  L470      AbstractCegarLoop]: Abstraction has 29 states and 37 transitions.
[2022-01-10 21:26:40,206 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 21:26:40,206 INFO  L276                IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions.
[2022-01-10 21:26:40,206 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2022-01-10 21:26:40,206 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 21:26:40,207 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]
[2022-01-10 21:26:40,225 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2022-01-10 21:26:40,423 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 21:26:40,423 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 21:26:40,424 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 21:26:40,424 INFO  L85        PathProgramCache]: Analyzing trace with hash 327718808, now seen corresponding path program 1 times
[2022-01-10 21:26:40,424 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 21:26:40,424 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39757243]
[2022-01-10 21:26:40,424 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:26:40,424 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 21:26:40,454 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 21:26:40,455 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1520812294]
[2022-01-10 21:26:40,455 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:26:40,455 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 21:26:40,455 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 21:26:40,456 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-10 21:26:40,457 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2022-01-10 21:26:40,535 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 21:26:40,536 INFO  L263         TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 6 conjunts are in the unsatisfiable core
[2022-01-10 21:26:40,541 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 21:26:40,708 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2022-01-10 21:26:40,708 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 21:26:40,708 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 21:26:40,709 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39757243]
[2022-01-10 21:26:40,709 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-10 21:26:40,709 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520812294]
[2022-01-10 21:26:40,709 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520812294] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 21:26:40,709 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 21:26:40,709 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-01-10 21:26:40,709 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236665677]
[2022-01-10 21:26:40,709 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 21:26:40,709 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-01-10 21:26:40,710 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 21:26:40,710 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-01-10 21:26:40,710 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2022-01-10 21:26:40,710 INFO  L87              Difference]: Start difference. First operand 29 states and 37 transitions. Second operand  has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 21:26:41,317 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 21:26:41,317 INFO  L93              Difference]: Finished difference Result 95 states and 128 transitions.
[2022-01-10 21:26:41,317 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-01-10 21:26:41,317 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23
[2022-01-10 21:26:41,318 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 21:26:41,318 INFO  L225             Difference]: With dead ends: 95
[2022-01-10 21:26:41,318 INFO  L226             Difference]: Without dead ends: 70
[2022-01-10 21:26:41,318 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2022-01-10 21:26:41,321 INFO  L933         BasicCegarLoop]: 15 mSDtfsCounter, 101 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-01-10 21:26:41,322 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 29 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-01-10 21:26:41,322 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 70 states.
[2022-01-10 21:26:41,326 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 32.
[2022-01-10 21:26:41,326 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 21:26:41,326 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions.
[2022-01-10 21:26:41,326 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 23
[2022-01-10 21:26:41,327 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 21:26:41,327 INFO  L470      AbstractCegarLoop]: Abstraction has 32 states and 40 transitions.
[2022-01-10 21:26:41,327 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 21:26:41,327 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions.
[2022-01-10 21:26:41,327 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2022-01-10 21:26:41,327 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 21:26:41,327 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]
[2022-01-10 21:26:41,344 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2022-01-10 21:26:41,534 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 21:26:41,534 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 21:26:41,534 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 21:26:41,534 INFO  L85        PathProgramCache]: Analyzing trace with hash 714889590, now seen corresponding path program 1 times
[2022-01-10 21:26:41,535 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 21:26:41,535 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170680469]
[2022-01-10 21:26:41,535 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:26:41,535 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 21:26:41,552 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 21:26:41,552 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1580231232]
[2022-01-10 21:26:41,553 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:26:41,553 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 21:26:41,553 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 21:26:41,554 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-10 21:26:41,555 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2022-01-10 21:26:41,750 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 21:26:41,752 INFO  L263         TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 14 conjunts are in the unsatisfiable core
[2022-01-10 21:26:41,753 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 21:26:42,011 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2022-01-10 21:26:42,011 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 21:26:42,280 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2022-01-10 21:26:42,281 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 21:26:42,281 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170680469]
[2022-01-10 21:26:42,281 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-10 21:26:42,281 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580231232]
[2022-01-10 21:26:42,281 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580231232] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 21:26:42,281 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-10 21:26:42,281 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9
[2022-01-10 21:26:42,281 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682083203]
[2022-01-10 21:26:42,281 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-10 21:26:42,281 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2022-01-10 21:26:42,281 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 21:26:42,282 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2022-01-10 21:26:42,282 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72
[2022-01-10 21:26:42,282 INFO  L87              Difference]: Start difference. First operand 32 states and 40 transitions. Second operand  has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 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 21:26:43,898 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 21:26:43,898 INFO  L93              Difference]: Finished difference Result 86 states and 115 transitions.
[2022-01-10 21:26:43,899 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2022-01-10 21:26:43,899 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 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 25
[2022-01-10 21:26:43,899 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 21:26:43,899 INFO  L225             Difference]: With dead ends: 86
[2022-01-10 21:26:43,899 INFO  L226             Difference]: Without dead ends: 58
[2022-01-10 21:26:43,900 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=91, Unknown=0, NotChecked=0, Total=156
[2022-01-10 21:26:43,900 INFO  L933         BasicCegarLoop]: 17 mSDtfsCounter, 107 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time
[2022-01-10 21:26:43,900 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 49 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time]
[2022-01-10 21:26:43,901 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 58 states.
[2022-01-10 21:26:43,909 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 44.
[2022-01-10 21:26:43,909 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 44 states, 43 states have (on average 1.2790697674418605) internal successors, (55), 43 states have internal predecessors, (55), 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 21:26:43,910 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions.
[2022-01-10 21:26:43,910 INFO  L78                 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 25
[2022-01-10 21:26:43,910 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 21:26:43,910 INFO  L470      AbstractCegarLoop]: Abstraction has 44 states and 55 transitions.
[2022-01-10 21:26:43,910 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 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 21:26:43,910 INFO  L276                IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions.
[2022-01-10 21:26:43,911 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2022-01-10 21:26:43,911 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 21:26:43,911 INFO  L514         BasicCegarLoop]: trace histogram [4, 2, 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 21:26:43,919 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2022-01-10 21:26:44,115 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 21:26:44,115 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 21:26:44,116 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 21:26:44,116 INFO  L85        PathProgramCache]: Analyzing trace with hash 1781123064, now seen corresponding path program 2 times
[2022-01-10 21:26:44,116 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 21:26:44,116 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022962316]
[2022-01-10 21:26:44,116 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:26:44,116 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 21:26:44,166 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 21:26:44,168 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [74048939]
[2022-01-10 21:26:44,169 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-01-10 21:26:44,169 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 21:26:44,169 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 21:26:44,184 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-10 21:26:44,186 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2022-01-10 21:26:44,571 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-01-10 21:26:44,571 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 21:26:44,574 INFO  L263         TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 12 conjunts are in the unsatisfiable core
[2022-01-10 21:26:44,575 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 21:26:45,252 INFO  L134       CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2022-01-10 21:26:45,252 INFO  L328         TraceCheckSpWp]: Computing backward predicates...