/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/array-fpi/ifeqn3f.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-11 03:22:06,492 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-11 03:22:06,494 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-11 03:22:06,546 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-11 03:22:06,546 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-11 03:22:06,547 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-11 03:22:06,548 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-11 03:22:06,549 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-11 03:22:06,550 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-11 03:22:06,550 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-01-11 03:22:06,551 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-11 03:22:06,552 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-11 03:22:06,552 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-11 03:22:06,553 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-11 03:22:06,553 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-11 03:22:06,554 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-11 03:22:06,554 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-11 03:22:06,555 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-11 03:22:06,556 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-11 03:22:06,557 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-11 03:22:06,567 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-11 03:22:06,569 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-11 03:22:06,570 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-11 03:22:06,584 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-11 03:22:06,584 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-11 03:22:06,584 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-11 03:22:06,585 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-11 03:22:06,585 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-11 03:22:06,586 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-11 03:22:06,586 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-11 03:22:06,586 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-11 03:22:06,587 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-11 03:22:06,587 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-11 03:22:06,588 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-11 03:22:06,588 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-11 03:22:06,588 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-11 03:22:06,588 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-11 03:22:06,588 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2022-01-11 03:22:06,589 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-11 03:22:06,590 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf
[2022-01-11 03:22:06,611 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-11 03:22:06,611 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-11 03:22:06,611 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-11 03:22:06,611 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-11 03:22:06,612 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-11 03:22:06,612 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-11 03:22:06,612 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-11 03:22:06,612 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-11 03:22:06,612 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-11 03:22:06,613 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-11 03:22:06,613 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-11 03:22:06,613 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-11 03:22:06,613 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-11 03:22:06,613 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-11 03:22:06,613 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-11 03:22:06,613 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-11 03:22:06,613 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-11 03:22:06,613 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-11 03:22:06,613 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-11 03:22:06,613 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-11 03:22:06,613 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-11 03:22:06,614 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-11 03:22:06,614 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-11 03:22:06,614 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-11 03:22:06,614 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-11 03:22:06,614 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-11 03:22:06,614 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-11 03:22:06,614 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-11 03:22:06,614 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-11 03:22:06,614 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-11 03:22:06,614 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-11 03:22:06,614 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-11 03:22:06,617 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-11 03:22:06,617 INFO  L138        SettingsManager]:  * TransformationType=BV_TO_INT_SUM
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-11 03:22:06,796 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-11 03:22:06,824 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-11 03:22:06,825 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-11 03:22:06,826 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-11 03:22:06,828 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-11 03:22:06,829 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifeqn3f.c
[2022-01-11 03:22:06,879 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a72589a7e/97109f338d9e44b884079ff92f556103/FLAG74f7d669d
[2022-01-11 03:22:07,168 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-11 03:22:07,168 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifeqn3f.c
[2022-01-11 03:22:07,174 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a72589a7e/97109f338d9e44b884079ff92f556103/FLAG74f7d669d
[2022-01-11 03:22:07,604 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a72589a7e/97109f338d9e44b884079ff92f556103
[2022-01-11 03:22:07,606 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-11 03:22:07,606 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-11 03:22:07,610 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-11 03:22:07,610 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-11 03:22:07,621 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-11 03:22:07,621 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 03:22:07" (1/1) ...
[2022-01-11 03:22:07,622 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26fed4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:22:07, skipping insertion in model container
[2022-01-11 03:22:07,622 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 03:22:07" (1/1) ...
[2022-01-11 03:22:07,627 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-11 03:22:07,635 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-11 03:22:07,753 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-fpi/ifeqn3f.c[590,603]
[2022-01-11 03:22:07,774 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-11 03:22:07,782 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-11 03:22:07,791 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-fpi/ifeqn3f.c[590,603]
[2022-01-11 03:22:07,804 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-11 03:22:07,812 INFO  L208         MainTranslator]: Completed translation
[2022-01-11 03:22:07,812 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:22:07 WrapperNode
[2022-01-11 03:22:07,812 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-11 03:22:07,813 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-11 03:22:07,813 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-11 03:22:07,813 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-11 03:22:07,819 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:22:07" (1/1) ...
[2022-01-11 03:22:07,832 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:22:07" (1/1) ...
[2022-01-11 03:22:07,844 INFO  L137                Inliner]: procedures = 18, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73
[2022-01-11 03:22:07,844 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-11 03:22:07,845 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-11 03:22:07,845 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-11 03:22:07,845 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-11 03:22:07,851 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:22:07" (1/1) ...
[2022-01-11 03:22:07,852 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:22:07" (1/1) ...
[2022-01-11 03:22:07,857 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:22:07" (1/1) ...
[2022-01-11 03:22:07,857 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:22:07" (1/1) ...
[2022-01-11 03:22:07,869 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:22:07" (1/1) ...
[2022-01-11 03:22:07,871 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:22:07" (1/1) ...
[2022-01-11 03:22:07,872 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:22:07" (1/1) ...
[2022-01-11 03:22:07,874 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-11 03:22:07,874 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-11 03:22:07,874 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-11 03:22:07,874 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-11 03:22:07,875 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:22:07" (1/1) ...
[2022-01-11 03:22:07,885 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-11 03:22:07,895 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 03:22:07,902 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-01-11 03:22:07,904 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-01-11 03:22:07,925 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-11 03:22:07,925 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-11 03:22:07,925 INFO  L130     BoogieDeclarations]: Found specification of procedure read~intINTTYPE8
[2022-01-11 03:22:07,925 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2022-01-11 03:22:07,925 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-11 03:22:07,925 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-11 03:22:07,926 INFO  L130     BoogieDeclarations]: Found specification of procedure write~intINTTYPE8
[2022-01-11 03:22:07,972 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-11 03:22:07,973 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-11 03:22:08,207 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-11 03:22:08,210 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-11 03:22:08,211 INFO  L299             CfgBuilder]: Removed 3 assume(true) statements.
[2022-01-11 03:22:08,212 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:22:08 BoogieIcfgContainer
[2022-01-11 03:22:08,212 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-11 03:22:08,212 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-11 03:22:08,212 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-11 03:22:08,213 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-11 03:22:08,220 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:22:08" (1/1) ...
[2022-01-11 03:22:08,344 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 03:22:08 BasicIcfg
[2022-01-11 03:22:08,344 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-11 03:22:08,345 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-11 03:22:08,345 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-11 03:22:08,347 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-11 03:22:08,347 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 03:22:07" (1/4) ...
[2022-01-11 03:22:08,348 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77746c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 03:22:08, skipping insertion in model container
[2022-01-11 03:22:08,348 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 03:22:07" (2/4) ...
[2022-01-11 03:22:08,348 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77746c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 03:22:08, skipping insertion in model container
[2022-01-11 03:22:08,348 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 03:22:08" (3/4) ...
[2022-01-11 03:22:08,348 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77746c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 03:22:08, skipping insertion in model container
[2022-01-11 03:22:08,348 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 03:22:08" (4/4) ...
[2022-01-11 03:22:08,349 INFO  L111   eAbstractionObserver]: Analyzing ICFG ifeqn3f.cTransformedIcfg
[2022-01-11 03:22:08,352 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-11 03:22:08,352 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-11 03:22:08,395 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-11 03:22:08,399 INFO  L339      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2022-01-11 03:22:08,399 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-11 03:22:08,410 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 03:22:08,413 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2022-01-11 03:22:08,414 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 03:22:08,414 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 03:22:08,414 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 03:22:08,418 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 03:22:08,418 INFO  L85        PathProgramCache]: Analyzing trace with hash -1663889424, now seen corresponding path program 1 times
[2022-01-11 03:22:08,424 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 03:22:08,425 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199752727]
[2022-01-11 03:22:08,425 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 03:22:08,426 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 03:22:08,514 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 03:22:08,545 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 03:22:08,546 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 03:22:08,546 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199752727]
[2022-01-11 03:22:08,546 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199752727] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-11 03:22:08,546 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-11 03:22:08,547 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-11 03:22:08,548 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356306179]
[2022-01-11 03:22:08,548 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-11 03:22:08,550 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-11 03:22:08,551 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 03:22:08,569 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-11 03:22:08,570 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-11 03:22:08,571 INFO  L87              Difference]: Start difference. First operand  has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 03:22:08,585 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 03:22:08,585 INFO  L93              Difference]: Finished difference Result 42 states and 60 transitions.
[2022-01-11 03:22:08,586 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-11 03:22:08,587 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12
[2022-01-11 03:22:08,587 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 03:22:08,592 INFO  L225             Difference]: With dead ends: 42
[2022-01-11 03:22:08,592 INFO  L226             Difference]: Without dead ends: 19
[2022-01-11 03:22:08,594 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-11 03:22:08,597 INFO  L933         BasicCegarLoop]: 28 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, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-11 03:22:08,605 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-11 03:22:08,616 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2022-01-11 03:22:08,623 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19.
[2022-01-11 03:22:08,624 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 03:22:08,625 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions.
[2022-01-11 03:22:08,626 INFO  L78                 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12
[2022-01-11 03:22:08,626 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 03:22:08,626 INFO  L470      AbstractCegarLoop]: Abstraction has 19 states and 23 transitions.
[2022-01-11 03:22:08,627 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 03:22:08,628 INFO  L276                IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions.
[2022-01-11 03:22:08,628 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2022-01-11 03:22:08,628 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 03:22:08,628 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 03:22:08,629 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-11 03:22:08,629 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 03:22:08,632 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 03:22:08,632 INFO  L85        PathProgramCache]: Analyzing trace with hash 1711127090, now seen corresponding path program 1 times
[2022-01-11 03:22:08,632 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 03:22:08,632 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654588226]
[2022-01-11 03:22:08,632 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 03:22:08,633 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 03:22:08,688 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-11 03:22:08,688 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [50788123]
[2022-01-11 03:22:08,688 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 03:22:08,688 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 03:22:08,689 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 03:22:08,690 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-11 03:22:08,691 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-01-11 03:22:08,784 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 03:22:08,785 INFO  L263         TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core
[2022-01-11 03:22:08,788 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-11 03:22:08,948 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 03:22:08,948 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-11 03:22:08,948 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 03:22:08,949 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654588226]
[2022-01-11 03:22:08,949 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-11 03:22:08,952 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50788123]
[2022-01-11 03:22:08,952 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [50788123] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-11 03:22:08,952 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-11 03:22:08,952 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-01-11 03:22:08,953 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71716675]
[2022-01-11 03:22:08,954 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-11 03:22:08,954 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-01-11 03:22:08,954 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 03:22:08,955 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-01-11 03:22:08,955 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-11 03:22:08,955 INFO  L87              Difference]: Start difference. First operand 19 states and 23 transitions. Second operand  has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 03:22:11,064 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2022-01-11 03:22:13,174 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2022-01-11 03:22:13,275 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 03:22:13,275 INFO  L93              Difference]: Finished difference Result 49 states and 62 transitions.
[2022-01-11 03:22:13,276 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-01-11 03:22:13,277 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 12
[2022-01-11 03:22:13,277 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 03:22:13,277 INFO  L225             Difference]: With dead ends: 49
[2022-01-11 03:22:13,278 INFO  L226             Difference]: Without dead ends: 31
[2022-01-11 03:22:13,278 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-11 03:22:13,279 INFO  L933         BasicCegarLoop]: 13 mSDtfsCounter, 11 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time
[2022-01-11 03:22:13,279 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 33 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 49 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time]
[2022-01-11 03:22:13,280 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2022-01-11 03:22:13,282 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23.
[2022-01-11 03:22:13,282 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 03:22:13,282 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions.
[2022-01-11 03:22:13,282 INFO  L78                 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12
[2022-01-11 03:22:13,283 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 03:22:13,283 INFO  L470      AbstractCegarLoop]: Abstraction has 23 states and 27 transitions.
[2022-01-11 03:22:13,283 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 03:22:13,283 INFO  L276                IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions.
[2022-01-11 03:22:13,283 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2022-01-11 03:22:13,283 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 03:22:13,283 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 03:22:13,300 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2022-01-11 03:22:13,500 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
[2022-01-11 03:22:13,501 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 03:22:13,501 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 03:22:13,501 INFO  L85        PathProgramCache]: Analyzing trace with hash 875960336, now seen corresponding path program 1 times
[2022-01-11 03:22:13,501 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 03:22:13,502 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597949220]
[2022-01-11 03:22:13,502 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 03:22:13,502 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 03:22:13,553 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-11 03:22:13,553 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [816002758]
[2022-01-11 03:22:13,553 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 03:22:13,553 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 03:22:13,553 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 03:22:13,556 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-11 03:22:13,562 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-01-11 03:22:13,735 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 03:22:13,737 INFO  L263         TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 29 conjunts are in the unsatisfiable core
[2022-01-11 03:22:13,740 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-11 03:22:13,978 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2022-01-11 03:22:13,984 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2022-01-11 03:22:13,986 INFO  L387             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 27
[2022-01-11 03:22:14,330 INFO  L173   IndexEqualityManager]: detected equality via solver
[2022-01-11 03:22:14,333 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2022-01-11 03:22:14,346 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2022-01-11 03:22:14,348 INFO  L173   IndexEqualityManager]: detected equality via solver
[2022-01-11 03:22:14,389 INFO  L353             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-01-11 03:22:14,390 INFO  L387             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 279 treesize of output 177
[2022-01-11 03:22:14,507 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 03:22:14,507 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-11 03:22:33,331 INFO  L387             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 164 treesize of output 160
[2022-01-11 03:22:35,750 INFO  L353             Elim1Store]: treesize reduction 54, result has 1.8 percent of original size
[2022-01-11 03:22:35,751 INFO  L387             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2364 treesize of output 2160
[2022-01-11 03:22:41,537 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-01-11 03:22:41,537 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 03:22:41,537 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597949220]
[2022-01-11 03:22:41,537 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-11 03:22:41,537 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816002758]
[2022-01-11 03:22:41,537 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [816002758] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-11 03:22:41,538 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-11 03:22:41,538 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16
[2022-01-11 03:22:41,538 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663091252]
[2022-01-11 03:22:41,538 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-11 03:22:41,540 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2022-01-11 03:22:41,540 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 03:22:41,540 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2022-01-11 03:22:41,542 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=165, Unknown=3, NotChecked=0, Total=240
[2022-01-11 03:22:41,542 INFO  L87              Difference]: Start difference. First operand 23 states and 27 transitions. Second operand  has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 03:22:43,589 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2022-01-11 03:22:45,681 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2022-01-11 03:22:47,752 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2022-01-11 03:22:49,959 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2022-01-11 03:22:50,364 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 03:22:50,364 INFO  L93              Difference]: Finished difference Result 43 states and 52 transitions.
[2022-01-11 03:22:50,365 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2022-01-11 03:22:50,365 INFO  L78                 Accepts]: Start accepts. Automaton has  has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 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 18
[2022-01-11 03:22:50,365 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 03:22:50,366 INFO  L225             Difference]: With dead ends: 43
[2022-01-11 03:22:50,366 INFO  L226             Difference]: Without dead ends: 33
[2022-01-11 03:22:50,366 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=99, Invalid=204, Unknown=3, NotChecked=0, Total=306
[2022-01-11 03:22:50,367 INFO  L933         BasicCegarLoop]: 11 mSDtfsCounter, 70 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time
[2022-01-11 03:22:50,367 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 53 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 64 Invalid, 4 Unknown, 73 Unchecked, 8.7s Time]
[2022-01-11 03:22:50,367 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2022-01-11 03:22:50,370 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29.
[2022-01-11 03:22:50,370 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 29 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 03:22:50,370 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions.
[2022-01-11 03:22:50,370 INFO  L78                 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 18
[2022-01-11 03:22:50,370 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 03:22:50,371 INFO  L470      AbstractCegarLoop]: Abstraction has 29 states and 34 transitions.
[2022-01-11 03:22:50,371 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 03:22:50,371 INFO  L276                IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions.
[2022-01-11 03:22:50,371 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2022-01-11 03:22:50,371 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 03:22:50,371 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 03:22:50,376 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2022-01-11 03:22:50,575 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
[2022-01-11 03:22:50,575 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 03:22:50,576 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 03:22:50,576 INFO  L85        PathProgramCache]: Analyzing trace with hash -1245794439, now seen corresponding path program 1 times
[2022-01-11 03:22:50,576 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 03:22:50,576 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34102110]
[2022-01-11 03:22:50,576 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 03:22:50,576 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 03:22:50,609 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-11 03:22:50,609 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1661317042]
[2022-01-11 03:22:50,609 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 03:22:50,609 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 03:22:50,610 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 03:22:50,613 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)
[2022-01-11 03:22:50,613 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-01-11 03:22:50,680 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 03:22:50,681 INFO  L263         TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 10 conjunts are in the unsatisfiable core
[2022-01-11 03:22:50,683 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-11 03:22:50,761 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 03:22:50,761 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-11 03:22:50,892 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 03:22:50,892 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 03:22:50,892 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34102110]
[2022-01-11 03:22:50,892 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-11 03:22:50,892 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661317042]
[2022-01-11 03:22:50,892 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661317042] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-11 03:22:50,892 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-11 03:22:50,893 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11
[2022-01-11 03:22:50,893 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576822725]
[2022-01-11 03:22:50,893 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-11 03:22:50,893 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2022-01-11 03:22:50,893 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 03:22:50,893 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2022-01-11 03:22:50,893 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110
[2022-01-11 03:22:50,894 INFO  L87              Difference]: Start difference. First operand 29 states and 34 transitions. Second operand  has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 03:22:53,032 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2022-01-11 03:22:55,107 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2022-01-11 03:22:57,283 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2022-01-11 03:22:59,709 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []
[2022-01-11 03:22:59,883 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 03:22:59,883 INFO  L93              Difference]: Finished difference Result 84 states and 99 transitions.
[2022-01-11 03:22:59,885 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2022-01-11 03:22:59,885 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21
[2022-01-11 03:22:59,885 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 03:22:59,886 INFO  L225             Difference]: With dead ends: 84
[2022-01-11 03:22:59,886 INFO  L226             Difference]: Without dead ends: 51
[2022-01-11 03:22:59,886 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110
[2022-01-11 03:22:59,887 INFO  L933         BasicCegarLoop]: 17 mSDtfsCounter, 53 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 31 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time
[2022-01-11 03:22:59,887 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 90 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 159 Invalid, 4 Unknown, 0 Unchecked, 9.0s Time]
[2022-01-11 03:22:59,887 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2022-01-11 03:22:59,891 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 34.
[2022-01-11 03:22:59,891 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 34 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 33 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 03:22:59,891 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions.
[2022-01-11 03:22:59,891 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 21
[2022-01-11 03:22:59,891 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 03:22:59,892 INFO  L470      AbstractCegarLoop]: Abstraction has 34 states and 39 transitions.
[2022-01-11 03:22:59,892 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 03:22:59,892 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions.
[2022-01-11 03:22:59,892 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2022-01-11 03:22:59,892 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 03:22:59,892 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 03:22:59,909 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2022-01-11 03:23:00,092 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
[2022-01-11 03:23:00,093 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 03:23:00,093 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 03:23:00,093 INFO  L85        PathProgramCache]: Analyzing trace with hash 2042877812, now seen corresponding path program 1 times
[2022-01-11 03:23:00,094 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 03:23:00,094 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766026867]
[2022-01-11 03:23:00,094 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 03:23:00,094 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 03:23:00,143 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-11 03:23:00,143 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [34804266]
[2022-01-11 03:23:00,144 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 03:23:00,144 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 03:23:00,144 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 03:23:00,145 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)
[2022-01-11 03:23:00,146 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2022-01-11 03:23:00,734 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 03:23:00,736 INFO  L263         TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 47 conjunts are in the unsatisfiable core
[2022-01-11 03:23:00,739 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-11 03:23:01,119 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2022-01-11 03:23:01,120 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2022-01-11 03:23:01,121 INFO  L387             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 27
[2022-01-11 03:23:01,191 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2022-01-11 03:23:01,193 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2022-01-11 03:23:01,194 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2022-01-11 03:23:01,195 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2022-01-11 03:23:01,196 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2022-01-11 03:23:01,196 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2022-01-11 03:23:01,197 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2022-01-11 03:23:01,198 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2022-01-11 03:23:01,199 INFO  L173   IndexEqualityManager]: detected equality via solver
[2022-01-11 03:23:01,201 INFO  L353             Elim1Store]: treesize reduction 2, result has 33.3 percent of original size
[2022-01-11 03:23:01,201 INFO  L387             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 105 treesize of output 114
[2022-01-11 03:23:01,281 INFO  L353             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-01-11 03:23:01,282 INFO  L387             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 39
[2022-01-11 03:23:01,303 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 03:23:01,303 INFO  L328         TraceCheckSpWp]: Computing backward predicates...