/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/nla-digbench/lcm1.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 20:28:04,798 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 20:28:04,799 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 20:28:04,823 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 20:28:04,824 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 20:28:04,825 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 20:28:04,826 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-10 20:28:04,827 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-10 20:28:04,829 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-10 20:28:04,830 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-01-10 20:28:04,831 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 20:28:04,832 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 20:28:04,832 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 20:28:04,833 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 20:28:04,834 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 20:28:04,835 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 20:28:04,836 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 20:28:04,837 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 20:28:04,838 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 20:28:04,840 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 20:28:04,841 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 20:28:04,842 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 20:28:04,842 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 20:28:04,845 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 20:28:04,845 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 20:28:04,845 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 20:28:04,846 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 20:28:04,846 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 20:28:04,847 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 20:28:04,847 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 20:28:04,848 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 20:28:04,848 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 20:28:04,849 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 20:28:04,850 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 20:28:04,850 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 20:28:04,850 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 20:28:04,851 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 20:28:04,851 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-10 20:28:04,851 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-10 20:28:04,852 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 20:28:04,853 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 20:28:04,900 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 20:28:04,900 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 20:28:04,900 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 20:28:04,901 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 20:28:04,901 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 20:28:04,902 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 20:28:04,902 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 20:28:04,902 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 20:28:04,902 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 20:28:04,902 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 20:28:04,902 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 20:28:04,902 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 20:28:04,902 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 20:28:04,903 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 20:28:04,903 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 20:28:04,903 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 20:28:04,903 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 20:28:04,903 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 20:28:04,903 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 20:28:04,903 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 20:28:04,903 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 20:28:04,904 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 20:28:04,904 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 20:28:04,904 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 20:28:04,904 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 20:28:04,904 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-10 20:28:04,904 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-10 20:28:04,904 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 20:28:04,904 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 20:28:04,905 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 20:28:04,905 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-10 20:28:04,905 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 20:28:04,905 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-10 20:28:04,906 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 20:28:05,144 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 20:28:05,170 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 20:28:05,172 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 20:28:05,173 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 20:28:05,174 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 20:28:05,175 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/lcm1.c
[2022-01-10 20:28:05,227 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d72589bf0/f6f29015cf76478c984668be9a927109/FLAGb2ead96ea
[2022-01-10 20:28:05,543 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 20:28:05,543 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/lcm1.c
[2022-01-10 20:28:05,548 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d72589bf0/f6f29015cf76478c984668be9a927109/FLAGb2ead96ea
[2022-01-10 20:28:05,968 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d72589bf0/f6f29015cf76478c984668be9a927109
[2022-01-10 20:28:05,971 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 20:28:05,974 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-10 20:28:05,975 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 20:28:05,975 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 20:28:05,977 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 20:28:05,978 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:28:05" (1/1) ...
[2022-01-10 20:28:05,978 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@322afcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:28:05, skipping insertion in model container
[2022-01-10 20:28:05,979 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:28:05" (1/1) ...
[2022-01-10 20:28:05,984 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 20:28:05,994 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 20:28:06,126 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/lcm1.c[552,565]
[2022-01-10 20:28:06,137 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 20:28:06,153 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 20:28:06,175 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/lcm1.c[552,565]
[2022-01-10 20:28:06,190 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 20:28:06,240 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 20:28:06,241 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:28:06 WrapperNode
[2022-01-10 20:28:06,241 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 20:28:06,243 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 20:28:06,243 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 20:28:06,244 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 20:28:06,249 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:28:06" (1/1) ...
[2022-01-10 20:28:06,266 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:28:06" (1/1) ...
[2022-01-10 20:28:06,296 INFO  L137                Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 101
[2022-01-10 20:28:06,296 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 20:28:06,297 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 20:28:06,297 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 20:28:06,297 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 20:28:06,304 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:28:06" (1/1) ...
[2022-01-10 20:28:06,304 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:28:06" (1/1) ...
[2022-01-10 20:28:06,309 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:28:06" (1/1) ...
[2022-01-10 20:28:06,310 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:28:06" (1/1) ...
[2022-01-10 20:28:06,324 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:28:06" (1/1) ...
[2022-01-10 20:28:06,328 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:28:06" (1/1) ...
[2022-01-10 20:28:06,329 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:28:06" (1/1) ...
[2022-01-10 20:28:06,331 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 20:28:06,332 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 20:28:06,332 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 20:28:06,332 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 20:28:06,334 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:28:06" (1/1) ...
[2022-01-10 20:28:06,339 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 20:28:06,348 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 20:28:06,364 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 20:28:06,412 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 20:28:06,412 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 20:28:06,412 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 20:28:06,413 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 20:28:06,401 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 20:28:06,468 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 20:28:06,469 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 20:28:06,736 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 20:28:06,741 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 20:28:06,742 INFO  L299             CfgBuilder]: Removed 3 assume(true) statements.
[2022-01-10 20:28:06,743 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:28:06 BoogieIcfgContainer
[2022-01-10 20:28:06,743 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 20:28:06,744 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-10 20:28:06,744 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-10 20:28:06,745 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-10 20:28:06,747 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:28:06" (1/1) ...
[2022-01-10 20:28:06,821 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:28:06 BasicIcfg
[2022-01-10 20:28:06,822 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-10 20:28:06,823 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 20:28:06,823 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 20:28:06,826 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 20:28:06,826 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:28:05" (1/4) ...
[2022-01-10 20:28:06,826 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3977620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:28:06, skipping insertion in model container
[2022-01-10 20:28:06,826 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:28:06" (2/4) ...
[2022-01-10 20:28:06,827 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3977620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:28:06, skipping insertion in model container
[2022-01-10 20:28:06,827 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:28:06" (3/4) ...
[2022-01-10 20:28:06,827 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3977620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:28:06, skipping insertion in model container
[2022-01-10 20:28:06,827 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:28:06" (4/4) ...
[2022-01-10 20:28:06,828 INFO  L111   eAbstractionObserver]: Analyzing ICFG lcm1.cTransformedIcfg
[2022-01-10 20:28:06,832 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 20:28:06,832 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations.
[2022-01-10 20:28:06,867 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 20:28:06,877 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 20:28:06,878 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 5 error locations.
[2022-01-10 20:28:06,894 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 40 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 39 states have internal predecessors, (57), 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 20:28:06,897 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2022-01-10 20:28:06,897 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:28:06,898 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 20:28:06,899 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] ===
[2022-01-10 20:28:06,902 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:28:06,903 INFO  L85        PathProgramCache]: Analyzing trace with hash -851390570, now seen corresponding path program 1 times
[2022-01-10 20:28:06,908 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:28:06,908 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684405071]
[2022-01-10 20:28:06,908 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:28:06,909 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:28:06,990 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:28:07,038 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 20:28:07,039 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 20:28:07,039 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684405071]
[2022-01-10 20:28:07,040 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684405071] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 20:28:07,040 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 20:28:07,040 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 20:28:07,041 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107272676]
[2022-01-10 20:28:07,042 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 20:28:07,045 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-10 20:28:07,045 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 20:28:07,065 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-10 20:28:07,066 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 20:28:07,067 INFO  L87              Difference]: Start difference. First operand  has 40 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 39 states have internal predecessors, (57), 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 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 20:28:07,085 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 20:28:07,085 INFO  L93              Difference]: Finished difference Result 77 states and 110 transitions.
[2022-01-10 20:28:07,087 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-10 20:28:07,088 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), 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 13
[2022-01-10 20:28:07,088 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 20:28:07,094 INFO  L225             Difference]: With dead ends: 77
[2022-01-10 20:28:07,095 INFO  L226             Difference]: Without dead ends: 36
[2022-01-10 20:28:07,097 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 20:28:07,103 INFO  L933         BasicCegarLoop]: 42 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, 42 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 20:28:07,104 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 20:28:07,117 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2022-01-10 20:28:07,131 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36.
[2022-01-10 20:28:07,132 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 36 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 35 states have internal predecessors, (38), 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 20:28:07,133 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions.
[2022-01-10 20:28:07,134 INFO  L78                 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 13
[2022-01-10 20:28:07,134 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 20:28:07,134 INFO  L470      AbstractCegarLoop]: Abstraction has 36 states and 38 transitions.
[2022-01-10 20:28:07,134 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), 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 20:28:07,134 INFO  L276                IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions.
[2022-01-10 20:28:07,135 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2022-01-10 20:28:07,135 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:28:07,135 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 20:28:07,135 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-10 20:28:07,135 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] ===
[2022-01-10 20:28:07,136 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:28:07,136 INFO  L85        PathProgramCache]: Analyzing trace with hash 727598106, now seen corresponding path program 1 times
[2022-01-10 20:28:07,136 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:28:07,137 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975888352]
[2022-01-10 20:28:07,137 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:28:07,137 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:28:07,183 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 20:28:07,183 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1453848017]
[2022-01-10 20:28:07,183 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:28:07,183 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 20:28:07,184 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 20:28:07,188 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 20:28:07,190 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 20:28:07,256 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:28:07,258 INFO  L263         TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 9 conjunts are in the unsatisfiable core
[2022-01-10 20:28:07,262 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 20:28:07,443 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 20:28:07,443 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 20:28:07,443 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 20:28:07,444 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975888352]
[2022-01-10 20:28:07,444 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-10 20:28:07,447 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453848017]
[2022-01-10 20:28:07,447 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453848017] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 20:28:07,447 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 20:28:07,448 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-10 20:28:07,448 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502058157]
[2022-01-10 20:28:07,449 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 20:28:07,450 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-10 20:28:07,450 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 20:28:07,450 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-10 20:28:07,451 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-10 20:28:07,451 INFO  L87              Difference]: Start difference. First operand 36 states and 38 transitions. Second operand  has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 20:28:07,964 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 20:28:07,965 INFO  L93              Difference]: Finished difference Result 63 states and 67 transitions.
[2022-01-10 20:28:07,965 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-01-10 20:28:07,965 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13
[2022-01-10 20:28:07,966 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 20:28:07,966 INFO  L225             Difference]: With dead ends: 63
[2022-01-10 20:28:07,967 INFO  L226             Difference]: Without dead ends: 57
[2022-01-10 20:28:07,967 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-10 20:28:07,968 INFO  L933         BasicCegarLoop]: 24 mSDtfsCounter, 35 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-01-10 20:28:07,968 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 61 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-01-10 20:28:07,969 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2022-01-10 20:28:07,979 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 48.
[2022-01-10 20:28:07,982 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 48 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 47 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:28:07,983 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions.
[2022-01-10 20:28:07,983 INFO  L78                 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 13
[2022-01-10 20:28:07,983 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 20:28:07,983 INFO  L470      AbstractCegarLoop]: Abstraction has 48 states and 53 transitions.
[2022-01-10 20:28:07,983 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 20:28:07,984 INFO  L276                IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions.
[2022-01-10 20:28:07,984 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2022-01-10 20:28:07,984 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:28:07,984 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 20:28:08,011 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 20:28:08,207 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
[2022-01-10 20:28:08,208 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] ===
[2022-01-10 20:28:08,208 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:28:08,209 INFO  L85        PathProgramCache]: Analyzing trace with hash 237661813, now seen corresponding path program 1 times
[2022-01-10 20:28:08,209 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:28:08,209 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001584050]
[2022-01-10 20:28:08,209 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:28:08,209 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:28:08,233 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 20:28:08,234 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1304976207]
[2022-01-10 20:28:08,234 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:28:08,234 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 20:28:08,234 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 20:28:08,235 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 20:28:08,267 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 20:28:08,307 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:28:08,308 INFO  L263         TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 22 conjunts are in the unsatisfiable core
[2022-01-10 20:28:08,311 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 20:28:14,126 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 20:28:14,126 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 20:28:14,127 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 20:28:14,127 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001584050]
[2022-01-10 20:28:14,127 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-10 20:28:14,127 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304976207]
[2022-01-10 20:28:14,127 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304976207] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 20:28:14,127 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 20:28:14,127 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2022-01-10 20:28:14,127 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300263465]
[2022-01-10 20:28:14,127 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 20:28:14,128 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2022-01-10 20:28:14,128 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 20:28:14,128 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2022-01-10 20:28:14,128 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110
[2022-01-10 20:28:14,129 INFO  L87              Difference]: Start difference. First operand 48 states and 53 transitions. Second operand  has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 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 20:28:35,968 WARN  L228               SmtUtils]: Spent 15.07s on a formula simplification. DAG size of input: 44 DAG size of output: 38 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2022-01-10 20:28:37,926 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-10 20:28:40,504 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-10 20:28:42,509 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-10 20:28:46,122 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-10 20:28:48,162 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-10 20:28:48,768 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 20:28:48,768 INFO  L93              Difference]: Finished difference Result 91 states and 101 transitions.
[2022-01-10 20:28:48,768 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2022-01-10 20:28:48,768 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 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 20:28:48,769 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 20:28:48,769 INFO  L225             Difference]: With dead ends: 91
[2022-01-10 20:28:48,769 INFO  L226             Difference]: Without dead ends: 77
[2022-01-10 20:28:48,770 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 23.7s TimeCoverageRelationStatistics Valid=118, Invalid=224, Unknown=0, NotChecked=0, Total=342
[2022-01-10 20:28:48,771 INFO  L933         BasicCegarLoop]: 17 mSDtfsCounter, 158 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 60 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time
[2022-01-10 20:28:48,771 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 75 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 115 Invalid, 3 Unknown, 0 Unchecked, 11.8s Time]
[2022-01-10 20:28:48,772 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 77 states.
[2022-01-10 20:28:48,781 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 74.
[2022-01-10 20:28:48,782 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 74 states, 69 states have (on average 1.2173913043478262) internal successors, (84), 73 states have internal predecessors, (84), 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 20:28:48,783 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 84 transitions.
[2022-01-10 20:28:48,783 INFO  L78                 Accepts]: Start accepts. Automaton has 74 states and 84 transitions. Word has length 17
[2022-01-10 20:28:48,783 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 20:28:48,783 INFO  L470      AbstractCegarLoop]: Abstraction has 74 states and 84 transitions.
[2022-01-10 20:28:48,783 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 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 20:28:48,784 INFO  L276                IsEmpty]: Start isEmpty. Operand 74 states and 84 transitions.
[2022-01-10 20:28:48,784 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2022-01-10 20:28:48,784 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:28:48,784 INFO  L514         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 20:28:48,805 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-01-10 20:28:48,999 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
[2022-01-10 20:28:49,000 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] ===
[2022-01-10 20:28:49,000 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:28:49,000 INFO  L85        PathProgramCache]: Analyzing trace with hash 269014583, now seen corresponding path program 1 times
[2022-01-10 20:28:49,001 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:28:49,001 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720029843]
[2022-01-10 20:28:49,001 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:28:49,001 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:28:49,019 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 20:28:49,019 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [325745464]
[2022-01-10 20:28:49,019 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:28:49,019 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 20:28:49,020 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 20:28:49,025 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 20:28:49,026 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 20:28:50,172 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:28:50,174 INFO  L263         TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 37 conjunts are in the unsatisfiable core
[2022-01-10 20:28:50,177 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 20:28:50,957 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:28:50,957 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 20:28:53,280 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:28:53,281 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 20:28:53,281 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720029843]
[2022-01-10 20:28:53,281 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-10 20:28:53,281 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325745464]
[2022-01-10 20:28:53,281 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [325745464] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 20:28:53,281 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-10 20:28:53,281 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 13
[2022-01-10 20:28:53,281 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994101474]
[2022-01-10 20:28:53,281 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-10 20:28:53,282 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2022-01-10 20:28:53,282 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 20:28:53,282 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2022-01-10 20:28:53,283 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156
[2022-01-10 20:28:53,283 INFO  L87              Difference]: Start difference. First operand 74 states and 84 transitions. Second operand  has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 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 20:28:56,604 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-10 20:29:00,480 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-10 20:29:02,483 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-10 20:29:05,290 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-10 20:29:07,294 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-10 20:29:09,297 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-10 20:29:13,652 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-10 20:29:13,679 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 20:29:13,680 INFO  L93              Difference]: Finished difference Result 121 states and 136 transitions.
[2022-01-10 20:29:13,680 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2022-01-10 20:29:13,680 INFO  L78                 Accepts]: Start accepts. Automaton has  has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 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) Word has length 21
[2022-01-10 20:29:13,681 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 20:29:13,682 INFO  L225             Difference]: With dead ends: 121
[2022-01-10 20:29:13,682 INFO  L226             Difference]: Without dead ends: 115
[2022-01-10 20:29:13,683 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=185, Invalid=367, Unknown=0, NotChecked=0, Total=552
[2022-01-10 20:29:13,684 INFO  L933         BasicCegarLoop]: 28 mSDtfsCounter, 205 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 93 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time
[2022-01-10 20:29:13,684 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 119 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 159 Invalid, 7 Unknown, 0 Unchecked, 16.7s Time]
[2022-01-10 20:29:13,685 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 115 states.
[2022-01-10 20:29:13,696 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 96.
[2022-01-10 20:29:13,697 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 96 states, 91 states have (on average 1.2087912087912087) internal successors, (110), 95 states have internal predecessors, (110), 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 20:29:13,698 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions.
[2022-01-10 20:29:13,698 INFO  L78                 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 21
[2022-01-10 20:29:13,698 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 20:29:13,698 INFO  L470      AbstractCegarLoop]: Abstraction has 96 states and 110 transitions.
[2022-01-10 20:29:13,699 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 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 20:29:13,699 INFO  L276                IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions.
[2022-01-10 20:29:13,703 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2022-01-10 20:29:13,703 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:29:13,704 INFO  L514         BasicCegarLoop]: trace histogram [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]
[2022-01-10 20:29:13,711 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 20:29:13,910 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
[2022-01-10 20:29:13,911 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] ===
[2022-01-10 20:29:13,911 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:29:13,911 INFO  L85        PathProgramCache]: Analyzing trace with hash 678041615, now seen corresponding path program 1 times
[2022-01-10 20:29:13,911 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:29:13,911 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027551330]
[2022-01-10 20:29:13,911 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:29:13,912 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:29:13,937 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 20:29:13,937 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1611415618]
[2022-01-10 20:29:13,937 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:29:13,937 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 20:29:13,937 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 20:29:13,942 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 20:29:13,943 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 20:29:14,070 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:29:14,071 INFO  L263         TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 15 conjunts are in the unsatisfiable core
[2022-01-10 20:29:14,073 INFO  L286         TraceCheckSpWp]: Computing forward predicates...