/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-patterns/array24_pattern.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-09 23:15:49,732 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-09 23:15:49,733 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-09 23:15:49,793 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-09 23:15:49,793 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-09 23:15:49,794 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-09 23:15:49,795 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-09 23:15:49,803 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-09 23:15:49,804 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-09 23:15:49,804 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-01-09 23:15:49,805 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-01-09 23:15:49,806 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-09 23:15:49,806 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-09 23:15:49,807 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-09 23:15:49,807 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-09 23:15:49,808 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-09 23:15:49,808 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-09 23:15:49,809 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-09 23:15:49,810 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-09 23:15:49,811 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-09 23:15:49,812 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-09 23:15:49,822 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-09 23:15:49,823 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-09 23:15:49,823 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-09 23:15:49,825 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-09 23:15:49,825 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-09 23:15:49,825 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-09 23:15:49,825 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-09 23:15:49,826 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-09 23:15:49,826 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-09 23:15:49,826 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-09 23:15:49,827 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-09 23:15:49,827 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-09 23:15:49,828 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-09 23:15:49,828 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-09 23:15:49,828 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-09 23:15:49,829 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-09 23:15:49,829 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-09 23:15:49,829 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-09 23:15:49,829 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-09 23:15:49,830 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-09 23:15:49,830 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf
[2022-01-09 23:15:49,843 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-09 23:15:49,843 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-09 23:15:49,843 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-09 23:15:49,843 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-09 23:15:49,844 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-01-09 23:15:49,844 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-01-09 23:15:49,844 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-09 23:15:49,844 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-09 23:15:49,844 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-09 23:15:49,844 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-09 23:15:49,844 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-09 23:15:49,845 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-09 23:15:49,845 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-09 23:15:49,845 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-09 23:15:49,845 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-09 23:15:49,845 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-09 23:15:49,845 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-09 23:15:49,845 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-09 23:15:49,845 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-09 23:15:49,845 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-09 23:15:49,845 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-09 23:15:49,845 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-09 23:15:49,846 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-09 23:15:49,846 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-09 23:15:49,846 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-09 23:15:49,846 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-09 23:15:49,846 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-09 23:15:49,846 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-09 23:15:49,846 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-09 23:15:49,846 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-09 23:15:49,846 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-09 23:15:49,990 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-09 23:15:50,020 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-09 23:15:50,021 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-09 23:15:50,022 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-09 23:15:50,036 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-09 23:15:50,037 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array24_pattern.c
[2022-01-09 23:15:50,097 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/096bfdbe6/c6d17f15375a4650986e66ffe4016f46/FLAGc57085380
[2022-01-09 23:15:50,390 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-09 23:15:50,390 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array24_pattern.c
[2022-01-09 23:15:50,394 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/096bfdbe6/c6d17f15375a4650986e66ffe4016f46/FLAGc57085380
[2022-01-09 23:15:50,826 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/096bfdbe6/c6d17f15375a4650986e66ffe4016f46
[2022-01-09 23:15:50,827 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-09 23:15:50,829 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2022-01-09 23:15:50,830 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-09 23:15:50,830 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-09 23:15:50,832 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-09 23:15:50,833 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:15:50" (1/1) ...
[2022-01-09 23:15:50,833 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16c93414 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:50, skipping insertion in model container
[2022-01-09 23:15:50,834 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:15:50" (1/1) ...
[2022-01-09 23:15:50,837 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-09 23:15:50,846 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-09 23:15:50,957 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-patterns/array24_pattern.c[1359,1372]
[2022-01-09 23:15:50,984 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-09 23:15:50,988 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-09 23:15:50,995 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-patterns/array24_pattern.c[1359,1372]
[2022-01-09 23:15:51,002 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-09 23:15:51,010 INFO  L208         MainTranslator]: Completed translation
[2022-01-09 23:15:51,011 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:51 WrapperNode
[2022-01-09 23:15:51,012 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-09 23:15:51,013 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-09 23:15:51,013 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-09 23:15:51,013 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-09 23:15:51,018 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:51" (1/1) ...
[2022-01-09 23:15:51,029 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:51" (1/1) ...
[2022-01-09 23:15:51,041 INFO  L137                Inliner]: procedures = 17, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 105
[2022-01-09 23:15:51,041 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-09 23:15:51,041 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-09 23:15:51,041 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-09 23:15:51,042 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-09 23:15:51,046 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:51" (1/1) ...
[2022-01-09 23:15:51,046 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:51" (1/1) ...
[2022-01-09 23:15:51,048 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:51" (1/1) ...
[2022-01-09 23:15:51,048 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:51" (1/1) ...
[2022-01-09 23:15:51,051 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:51" (1/1) ...
[2022-01-09 23:15:51,053 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:51" (1/1) ...
[2022-01-09 23:15:51,054 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:51" (1/1) ...
[2022-01-09 23:15:51,055 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-09 23:15:51,056 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-09 23:15:51,056 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-09 23:15:51,056 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-09 23:15:51,056 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:51" (1/1) ...
[2022-01-09 23:15:51,061 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-09 23:15:51,068 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-09 23:15:51,080 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)
[2022-01-09 23:15:51,085 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
[2022-01-09 23:15:51,112 INFO  L130     BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck
[2022-01-09 23:15:51,112 INFO  L138     BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck
[2022-01-09 23:15:51,112 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-09 23:15:51,112 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2022-01-09 23:15:51,112 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2022-01-09 23:15:51,112 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-01-09 23:15:51,112 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2022-01-09 23:15:51,113 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2022-01-09 23:15:51,113 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-09 23:15:51,113 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-09 23:15:51,113 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2022-01-09 23:15:51,113 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-01-09 23:15:51,159 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-09 23:15:51,162 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-09 23:15:51,275 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-09 23:15:51,279 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-09 23:15:51,279 INFO  L299             CfgBuilder]: Removed 5 assume(true) statements.
[2022-01-09 23:15:51,280 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:15:51 BoogieIcfgContainer
[2022-01-09 23:15:51,280 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-09 23:15:51,281 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-09 23:15:51,281 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-09 23:15:51,283 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-09 23:15:51,283 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 11:15:50" (1/3) ...
[2022-01-09 23:15:51,284 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2679b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:15:51, skipping insertion in model container
[2022-01-09 23:15:51,284 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:15:51" (2/3) ...
[2022-01-09 23:15:51,284 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2679b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:15:51, skipping insertion in model container
[2022-01-09 23:15:51,284 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:15:51" (3/3) ...
[2022-01-09 23:15:51,285 INFO  L111   eAbstractionObserver]: Analyzing ICFG array24_pattern.c
[2022-01-09 23:15:51,288 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-09 23:15:51,288 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-09 23:15:51,316 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-09 23:15:51,321 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
[2022-01-09 23:15:51,321 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-09 23:15:51,331 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 40 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 32 states have internal predecessors, (48), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2022-01-09 23:15:51,334 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2022-01-09 23:15:51,334 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-09 23:15:51,334 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-09 23:15:51,335 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-09 23:15:51,338 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-09 23:15:51,338 INFO  L85        PathProgramCache]: Analyzing trace with hash 2136211159, now seen corresponding path program 1 times
[2022-01-09 23:15:51,343 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-09 23:15:51,344 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268684088]
[2022-01-09 23:15:51,344 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-09 23:15:51,345 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-09 23:15:51,404 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-09 23:15:51,431 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2022-01-09 23:15:51,433 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-09 23:15:51,440 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-09 23:15:51,441 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-09 23:15:51,441 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268684088]
[2022-01-09 23:15:51,441 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268684088] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-09 23:15:51,442 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-09 23:15:51,442 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-09 23:15:51,443 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689524272]
[2022-01-09 23:15:51,443 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-09 23:15:51,446 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-09 23:15:51,446 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-09 23:15:51,463 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-09 23:15:51,463 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-09 23:15:51,465 INFO  L87              Difference]: Start difference. First operand  has 40 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 32 states have internal predecessors, (48), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand  has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-09 23:15:51,478 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-09 23:15:51,478 INFO  L93              Difference]: Finished difference Result 77 states and 115 transitions.
[2022-01-09 23:15:51,479 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-09 23:15:51,480 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15
[2022-01-09 23:15:51,480 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-09 23:15:51,484 INFO  L225             Difference]: With dead ends: 77
[2022-01-09 23:15:51,484 INFO  L226             Difference]: Without dead ends: 36
[2022-01-09 23:15:51,486 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-09 23:15:51,488 INFO  L933         BasicCegarLoop]: 50 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, 50 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
[2022-01-09 23:15:51,489 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-09 23:15:51,499 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2022-01-09 23:15:51,510 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36.
[2022-01-09 23:15:51,511 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 36 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2022-01-09 23:15:51,512 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 46 transitions.
[2022-01-09 23:15:51,513 INFO  L78                 Accepts]: Start accepts. Automaton has 36 states and 46 transitions. Word has length 15
[2022-01-09 23:15:51,513 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-09 23:15:51,513 INFO  L470      AbstractCegarLoop]: Abstraction has 36 states and 46 transitions.
[2022-01-09 23:15:51,513 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-09 23:15:51,513 INFO  L276                IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions.
[2022-01-09 23:15:51,514 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2022-01-09 23:15:51,514 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-09 23:15:51,515 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-09 23:15:51,515 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-09 23:15:51,515 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-09 23:15:51,516 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-09 23:15:51,516 INFO  L85        PathProgramCache]: Analyzing trace with hash -699940082, now seen corresponding path program 1 times
[2022-01-09 23:15:51,516 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-09 23:15:51,516 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789069746]
[2022-01-09 23:15:51,516 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-09 23:15:51,516 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-09 23:15:51,542 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-09 23:15:51,542 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [7544508]
[2022-01-09 23:15:51,542 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-09 23:15:51,542 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-09 23:15:51,543 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-09 23:15:51,544 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)
[2022-01-09 23:15:51,545 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-01-09 23:15:51,624 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-09 23:15:51,626 INFO  L263         TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-01-09 23:15:51,630 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-09 23:15:51,760 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-01-09 23:15:51,760 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-09 23:15:51,760 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-09 23:15:51,760 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789069746]
[2022-01-09 23:15:51,760 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-09 23:15:51,760 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7544508]
[2022-01-09 23:15:51,761 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [7544508] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-09 23:15:51,761 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-09 23:15:51,761 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-01-09 23:15:51,762 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542092016]
[2022-01-09 23:15:51,762 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-09 23:15:51,762 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-01-09 23:15:51,762 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-09 23:15:51,763 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-01-09 23:15:51,763 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2022-01-09 23:15:51,763 INFO  L87              Difference]: Start difference. First operand 36 states and 46 transitions. Second operand  has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2022-01-09 23:15:51,883 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-09 23:15:51,883 INFO  L93              Difference]: Finished difference Result 76 states and 96 transitions.
[2022-01-09 23:15:51,883 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2022-01-09 23:15:51,883 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35
[2022-01-09 23:15:51,884 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-09 23:15:51,887 INFO  L225             Difference]: With dead ends: 76
[2022-01-09 23:15:51,887 INFO  L226             Difference]: Without dead ends: 48
[2022-01-09 23:15:51,888 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2022-01-09 23:15:51,889 INFO  L933         BasicCegarLoop]: 28 mSDtfsCounter, 49 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-09 23:15:51,893 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 92 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-09 23:15:51,894 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 48 states.
[2022-01-09 23:15:51,900 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42.
[2022-01-09 23:15:51,900 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 42 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2022-01-09 23:15:51,901 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions.
[2022-01-09 23:15:51,901 INFO  L78                 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 35
[2022-01-09 23:15:51,901 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-09 23:15:51,901 INFO  L470      AbstractCegarLoop]: Abstraction has 42 states and 51 transitions.
[2022-01-09 23:15:51,901 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2022-01-09 23:15:51,901 INFO  L276                IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions.
[2022-01-09 23:15:51,903 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2022-01-09 23:15:51,903 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-09 23:15:51,904 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-09 23:15:51,922 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2022-01-09 23:15:52,122 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-09 23:15:52,122 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-09 23:15:52,123 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-09 23:15:52,123 INFO  L85        PathProgramCache]: Analyzing trace with hash -1308831759, now seen corresponding path program 1 times
[2022-01-09 23:15:52,123 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-09 23:15:52,123 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19213829]
[2022-01-09 23:15:52,123 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-09 23:15:52,123 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-09 23:15:52,138 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-09 23:15:52,138 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907357422]
[2022-01-09 23:15:52,138 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-09 23:15:52,138 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-09 23:15:52,138 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-09 23:15:52,150 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)
[2022-01-09 23:15:52,160 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-01-09 23:15:52,211 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-09 23:15:52,212 INFO  L263         TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core
[2022-01-09 23:15:52,215 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-09 23:15:52,266 INFO  L134       CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2022-01-09 23:15:52,267 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-09 23:15:52,267 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-09 23:15:52,267 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19213829]
[2022-01-09 23:15:52,267 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-09 23:15:52,267 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907357422]
[2022-01-09 23:15:52,267 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [907357422] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-09 23:15:52,267 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-09 23:15:52,267 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-09 23:15:52,267 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106517567]
[2022-01-09 23:15:52,268 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-09 23:15:52,268 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-09 23:15:52,268 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-09 23:15:52,268 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-09 23:15:52,268 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-09 23:15:52,268 INFO  L87              Difference]: Start difference. First operand 42 states and 51 transitions. Second operand  has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2022-01-09 23:15:52,302 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-09 23:15:52,302 INFO  L93              Difference]: Finished difference Result 79 states and 99 transitions.
[2022-01-09 23:15:52,302 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-01-09 23:15:52,303 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41
[2022-01-09 23:15:52,303 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-09 23:15:52,303 INFO  L225             Difference]: With dead ends: 79
[2022-01-09 23:15:52,303 INFO  L226             Difference]: Without dead ends: 46
[2022-01-09 23:15:52,303 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-09 23:15:52,304 INFO  L933         BasicCegarLoop]: 36 mSDtfsCounter, 27 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-09 23:15:52,305 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 76 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-09 23:15:52,305 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 46 states.
[2022-01-09 23:15:52,309 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44.
[2022-01-09 23:15:52,309 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 44 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2022-01-09 23:15:52,309 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions.
[2022-01-09 23:15:52,309 INFO  L78                 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 41
[2022-01-09 23:15:52,310 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-09 23:15:52,310 INFO  L470      AbstractCegarLoop]: Abstraction has 44 states and 53 transitions.
[2022-01-09 23:15:52,310 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2022-01-09 23:15:52,310 INFO  L276                IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions.
[2022-01-09 23:15:52,310 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2022-01-09 23:15:52,311 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-09 23:15:52,311 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-09 23:15:52,342 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-01-09 23:15:52,511 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,SelfDestructingSolverStorable2
[2022-01-09 23:15:52,512 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-09 23:15:52,512 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-09 23:15:52,513 INFO  L85        PathProgramCache]: Analyzing trace with hash 1300942485, now seen corresponding path program 1 times
[2022-01-09 23:15:52,513 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-09 23:15:52,513 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559981868]
[2022-01-09 23:15:52,513 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-09 23:15:52,513 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-09 23:15:52,531 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-09 23:15:52,532 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1517985138]
[2022-01-09 23:15:52,532 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-09 23:15:52,532 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-09 23:15:52,532 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-09 23:15:52,535 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)
[2022-01-09 23:15:52,538 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-01-09 23:15:52,595 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-09 23:15:52,595 INFO  L263         TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 11 conjunts are in the unsatisfiable core
[2022-01-09 23:15:52,599 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-09 23:15:52,700 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2022-01-09 23:15:52,700 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-09 23:15:52,821 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2022-01-09 23:15:52,822 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-09 23:15:52,822 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559981868]
[2022-01-09 23:15:52,822 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-09 23:15:52,822 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517985138]
[2022-01-09 23:15:52,822 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517985138] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-09 23:15:52,822 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-09 23:15:52,822 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13
[2022-01-09 23:15:52,822 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371122657]
[2022-01-09 23:15:52,823 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-09 23:15:52,823 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2022-01-09 23:15:52,823 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-09 23:15:52,823 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2022-01-09 23:15:52,823 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2022-01-09 23:15:52,824 INFO  L87              Difference]: Start difference. First operand 44 states and 53 transitions. Second operand  has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8)
[2022-01-09 23:15:52,995 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-09 23:15:52,995 INFO  L93              Difference]: Finished difference Result 85 states and 105 transitions.
[2022-01-09 23:15:52,996 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2022-01-09 23:15:52,996 INFO  L78                 Accepts]: Start accepts. Automaton has  has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 45
[2022-01-09 23:15:52,996 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-09 23:15:52,996 INFO  L225             Difference]: With dead ends: 85
[2022-01-09 23:15:52,996 INFO  L226             Difference]: Without dead ends: 50
[2022-01-09 23:15:52,997 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342
[2022-01-09 23:15:52,998 INFO  L933         BasicCegarLoop]: 24 mSDtfsCounter, 104 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-09 23:15:53,011 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 151 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-09 23:15:53,012 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2022-01-09 23:15:53,016 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48.
[2022-01-09 23:15:53,016 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 48 states, 39 states have (on average 1.205128205128205) internal successors, (47), 39 states have internal predecessors, (47), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2022-01-09 23:15:53,016 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions.
[2022-01-09 23:15:53,016 INFO  L78                 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 45
[2022-01-09 23:15:53,017 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-09 23:15:53,017 INFO  L470      AbstractCegarLoop]: Abstraction has 48 states and 57 transitions.
[2022-01-09 23:15:53,017 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8)
[2022-01-09 23:15:53,017 INFO  L276                IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions.
[2022-01-09 23:15:53,018 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 50
[2022-01-09 23:15:53,018 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-09 23:15:53,018 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-09 23:15:53,036 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2022-01-09 23:15:53,227 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-09 23:15:53,228 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-09 23:15:53,228 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-09 23:15:53,228 INFO  L85        PathProgramCache]: Analyzing trace with hash 1544610617, now seen corresponding path program 2 times
[2022-01-09 23:15:53,228 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-09 23:15:53,228 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495586936]
[2022-01-09 23:15:53,228 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-09 23:15:53,229 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-09 23:15:53,243 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-09 23:15:53,243 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [302359413]
[2022-01-09 23:15:53,243 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-01-09 23:15:53,243 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-09 23:15:53,244 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-09 23:15:53,244 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)
[2022-01-09 23:15:53,245 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2022-01-09 23:15:53,290 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-01-09 23:15:53,290 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-09 23:15:53,290 INFO  L263         TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 6 conjunts are in the unsatisfiable core
[2022-01-09 23:15:53,292 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-09 23:15:53,398 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2022-01-09 23:15:53,398 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-09 23:15:53,504 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked.
[2022-01-09 23:15:53,505 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-09 23:15:53,505 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495586936]
[2022-01-09 23:15:53,505 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-09 23:15:53,505 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302359413]
[2022-01-09 23:15:53,505 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [302359413] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-09 23:15:53,505 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-09 23:15:53,505 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11
[2022-01-09 23:15:53,505 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528695045]
[2022-01-09 23:15:53,505 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-09 23:15:53,506 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2022-01-09 23:15:53,506 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-09 23:15:53,506 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2022-01-09 23:15:53,506 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110
[2022-01-09 23:15:53,506 INFO  L87              Difference]: Start difference. First operand 48 states and 57 transitions. Second operand  has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)
[2022-01-09 23:15:53,630 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-09 23:15:53,630 INFO  L93              Difference]: Finished difference Result 106 states and 128 transitions.
[2022-01-09 23:15:53,631 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2022-01-09 23:15:53,631 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 49
[2022-01-09 23:15:53,631 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-09 23:15:53,632 INFO  L225             Difference]: With dead ends: 106
[2022-01-09 23:15:53,632 INFO  L226             Difference]: Without dead ends: 74
[2022-01-09 23:15:53,632 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272
[2022-01-09 23:15:53,633 INFO  L933         BasicCegarLoop]: 34 mSDtfsCounter, 50 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-09 23:15:53,633 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 198 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-09 23:15:53,633 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 74 states.
[2022-01-09 23:15:53,638 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 62.
[2022-01-09 23:15:53,638 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 62 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 53 states have internal predecessors, (63), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2022-01-09 23:15:53,638 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions.
[2022-01-09 23:15:53,638 INFO  L78                 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 49
[2022-01-09 23:15:53,638 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-09 23:15:53,639 INFO  L470      AbstractCegarLoop]: Abstraction has 62 states and 73 transitions.
[2022-01-09 23:15:53,639 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)
[2022-01-09 23:15:53,639 INFO  L276                IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions.
[2022-01-09 23:15:53,639 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 64
[2022-01-09 23:15:53,639 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-09 23:15:53,640 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-09 23:15:53,659 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2022-01-09 23:15:53,840 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-09 23:15:53,840 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-09 23:15:53,841 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-09 23:15:53,841 INFO  L85        PathProgramCache]: Analyzing trace with hash -725408594, now seen corresponding path program 3 times
[2022-01-09 23:15:53,841 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-09 23:15:53,841 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464769701]
[2022-01-09 23:15:53,841 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-09 23:15:53,841 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-09 23:15:53,850 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-09 23:15:53,850 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [232846152]
[2022-01-09 23:15:53,850 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-01-09 23:15:53,851 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-09 23:15:53,851 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-09 23:15:53,858 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)
[2022-01-09 23:15:53,867 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2022-01-09 23:15:54,450 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s)
[2022-01-09 23:15:54,450 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-09 23:15:54,453 INFO  L263         TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 86 conjunts are in the unsatisfiable core
[2022-01-09 23:15:54,460 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-09 23:15:54,549 INFO  L387             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16
[2022-01-09 23:15:54,618 INFO  L353             Elim1Store]: treesize reduction 49, result has 21.0 percent of original size
[2022-01-09 23:15:54,618 INFO  L387             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31
[2022-01-09 23:15:54,738 INFO  L353             Elim1Store]: treesize reduction 84, result has 16.8 percent of original size
[2022-01-09 23:15:54,738 INFO  L387             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 39
[2022-01-09 23:15:54,839 INFO  L353             Elim1Store]: treesize reduction 186, result has 15.5 percent of original size
[2022-01-09 23:15:54,840 INFO  L387             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 59
[2022-01-09 23:16:17,463 INFO  L353             Elim1Store]: treesize reduction 399, result has 11.1 percent of original size
[2022-01-09 23:16:17,463 INFO  L387             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 83 treesize of output 78
[2022-01-09 23:16:36,428 INFO  L353             Elim1Store]: treesize reduction 198, result has 1.5 percent of original size
[2022-01-09 23:16:36,428 INFO  L387             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 70 treesize of output 23
[2022-01-09 23:16:36,647 INFO  L134       CoverageAnalysis]: Checked inductivity of 62 backedges. 12 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-09 23:16:36,647 INFO  L328         TraceCheckSpWp]: Computing backward predicates...