/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/combinations/gcd_2+newton_2_6.i


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 02:11:24,569 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 02:11:24,571 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 02:11:24,624 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 02:11:24,625 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 02:11:24,627 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 02:11:24,627 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-10 02:11:24,628 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-10 02:11:24,631 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-10 02:11:24,632 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-01-10 02:11:24,633 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 02:11:24,633 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 02:11:24,634 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 02:11:24,634 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 02:11:24,635 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 02:11:24,635 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 02:11:24,636 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 02:11:24,637 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 02:11:24,638 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 02:11:24,639 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 02:11:24,642 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 02:11:24,643 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 02:11:24,643 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 02:11:24,645 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 02:11:24,645 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 02:11:24,645 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 02:11:24,645 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 02:11:24,646 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 02:11:24,646 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 02:11:24,646 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 02:11:24,647 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 02:11:24,647 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 02:11:24,648 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 02:11:24,648 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 02:11:24,649 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 02:11:24,649 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 02:11:24,649 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 02:11:24,649 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2022-01-10 02:11:24,650 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 02:11:24,651 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf
[2022-01-10 02:11:24,662 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 02:11:24,662 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 02:11:24,663 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 02:11:24,663 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 02:11:24,664 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-01-10 02:11:24,664 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-01-10 02:11:24,664 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 02:11:24,664 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 02:11:24,665 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 02:11:24,665 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 02:11:24,665 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 02:11:24,665 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 02:11:24,665 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 02:11:24,665 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 02:11:24,665 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 02:11:24,665 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 02:11:24,665 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 02:11:24,666 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 02:11:24,666 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 02:11:24,666 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 02:11:24,666 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 02:11:24,666 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 02:11:24,666 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 02:11:24,666 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 02:11:24,666 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 02:11:24,666 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-10 02:11:24,667 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-10 02:11:24,667 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 02:11:24,667 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 02:11:24,667 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 02:11:24,667 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 02:11:24,864 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 02:11:24,882 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 02:11:24,884 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 02:11:24,884 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 02:11:24,885 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 02:11:24,885 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/gcd_2+newton_2_6.i
[2022-01-10 02:11:24,940 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a60ee790f/a6ee4bd504bf4528bfbf2835153e29e1/FLAG23852cef0
[2022-01-10 02:11:25,318 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 02:11:25,318 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/gcd_2+newton_2_6.i
[2022-01-10 02:11:25,323 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a60ee790f/a6ee4bd504bf4528bfbf2835153e29e1/FLAG23852cef0
[2022-01-10 02:11:25,335 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a60ee790f/a6ee4bd504bf4528bfbf2835153e29e1
[2022-01-10 02:11:25,338 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 02:11:25,340 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2022-01-10 02:11:25,342 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 02:11:25,342 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 02:11:25,344 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 02:11:25,345 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:11:25" (1/1) ...
[2022-01-10 02:11:25,345 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f9667da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:11:25, skipping insertion in model container
[2022-01-10 02:11:25,346 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:11:25" (1/1) ...
[2022-01-10 02:11:25,350 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 02:11:25,365 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 02:11:25,503 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/gcd_2+newton_2_6.i[1226,1239]
[2022-01-10 02:11:25,550 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/gcd_2+newton_2_6.i[2841,2854]
[2022-01-10 02:11:25,551 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 02:11:25,555 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 02:11:25,562 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/gcd_2+newton_2_6.i[1226,1239]
[2022-01-10 02:11:25,568 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/gcd_2+newton_2_6.i[2841,2854]
[2022-01-10 02:11:25,569 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 02:11:25,577 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 02:11:25,577 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:11:25 WrapperNode
[2022-01-10 02:11:25,578 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 02:11:25,578 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 02:11:25,578 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 02:11:25,579 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 02:11:25,583 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:11:25" (1/1) ...
[2022-01-10 02:11:25,594 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:11:25" (1/1) ...
[2022-01-10 02:11:25,614 INFO  L137                Inliner]: procedures = 27, calls = 16, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 77
[2022-01-10 02:11:25,615 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 02:11:25,615 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 02:11:25,615 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 02:11:25,615 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 02:11:25,620 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:11:25" (1/1) ...
[2022-01-10 02:11:25,620 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:11:25" (1/1) ...
[2022-01-10 02:11:25,623 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:11:25" (1/1) ...
[2022-01-10 02:11:25,623 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:11:25" (1/1) ...
[2022-01-10 02:11:25,634 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:11:25" (1/1) ...
[2022-01-10 02:11:25,637 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:11:25" (1/1) ...
[2022-01-10 02:11:25,637 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:11:25" (1/1) ...
[2022-01-10 02:11:25,638 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 02:11:25,639 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 02:11:25,639 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 02:11:25,639 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 02:11:25,647 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:11:25" (1/1) ...
[2022-01-10 02:11:25,654 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 02:11:25,661 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 02:11:25,670 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 02:11:25,689 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 02:11:25,700 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 02:11:25,700 INFO  L130     BoogieDeclarations]: Found specification of procedure fp
[2022-01-10 02:11:25,700 INFO  L138     BoogieDeclarations]: Found implementation of procedure fp
[2022-01-10 02:11:25,700 INFO  L130     BoogieDeclarations]: Found specification of procedure f
[2022-01-10 02:11:25,701 INFO  L138     BoogieDeclarations]: Found implementation of procedure f
[2022-01-10 02:11:25,701 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-01-10 02:11:25,701 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 02:11:25,701 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 02:11:25,752 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 02:11:25,753 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 02:11:26,001 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 02:11:26,005 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 02:11:26,006 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-10 02:11:26,007 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:11:26 BoogieIcfgContainer
[2022-01-10 02:11:26,007 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 02:11:26,008 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 02:11:26,008 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 02:11:26,013 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 02:11:26,013 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:11:25" (1/3) ...
[2022-01-10 02:11:26,013 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1c811c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:11:26, skipping insertion in model container
[2022-01-10 02:11:26,013 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:11:25" (2/3) ...
[2022-01-10 02:11:26,014 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1c811c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:11:26, skipping insertion in model container
[2022-01-10 02:11:26,014 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:11:26" (3/3) ...
[2022-01-10 02:11:26,014 INFO  L111   eAbstractionObserver]: Analyzing ICFG gcd_2+newton_2_6.i
[2022-01-10 02:11:26,017 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 02:11:26,017 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations.
[2022-01-10 02:11:26,059 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 02:11:26,065 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 02:11:26,066 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2022-01-10 02:11:26,076 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2022-01-10 02:11:26,078 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-01-10 02:11:26,079 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 02:11:26,079 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 02:11:26,079 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 02:11:26,083 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 02:11:26,083 INFO  L85        PathProgramCache]: Analyzing trace with hash -1709385323, now seen corresponding path program 1 times
[2022-01-10 02:11:26,088 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 02:11:26,088 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718426981]
[2022-01-10 02:11:26,088 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 02:11:26,089 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 02:11:26,160 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 02:11:26,221 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 02:11:26,222 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 02:11:26,222 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718426981]
[2022-01-10 02:11:26,222 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718426981] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 02:11:26,222 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 02:11:26,223 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-10 02:11:26,224 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375362209]
[2022-01-10 02:11:26,224 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 02:11:26,226 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-10 02:11:26,226 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 02:11:26,248 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-10 02:11:26,248 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-10 02:11:26,250 INFO  L87              Difference]: Start difference. First operand  has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand  has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 02:11:26,302 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 02:11:26,303 INFO  L93              Difference]: Finished difference Result 90 states and 111 transitions.
[2022-01-10 02:11:26,304 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-01-10 02:11:26,305 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11
[2022-01-10 02:11:26,305 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 02:11:26,308 INFO  L225             Difference]: With dead ends: 90
[2022-01-10 02:11:26,309 INFO  L226             Difference]: Without dead ends: 36
[2022-01-10 02:11:26,310 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 02:11:26,313 INFO  L933         BasicCegarLoop]: 37 mSDtfsCounter, 29 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 02:11:26,314 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 107 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 02:11:26,324 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2022-01-10 02:11:26,337 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29.
[2022-01-10 02:11:26,338 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 29 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2022-01-10 02:11:26,339 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions.
[2022-01-10 02:11:26,340 INFO  L78                 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 11
[2022-01-10 02:11:26,340 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 02:11:26,340 INFO  L470      AbstractCegarLoop]: Abstraction has 29 states and 32 transitions.
[2022-01-10 02:11:26,340 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 02:11:26,340 INFO  L276                IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions.
[2022-01-10 02:11:26,341 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-01-10 02:11:26,341 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 02:11:26,341 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 02:11:26,341 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-10 02:11:26,342 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 02:11:26,342 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 02:11:26,342 INFO  L85        PathProgramCache]: Analyzing trace with hash 65622039, now seen corresponding path program 1 times
[2022-01-10 02:11:26,342 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 02:11:26,342 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63514102]
[2022-01-10 02:11:26,342 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 02:11:26,343 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 02:11:26,354 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 02:11:26,377 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 02:11:26,378 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 02:11:26,378 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63514102]
[2022-01-10 02:11:26,378 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63514102] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 02:11:26,378 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 02:11:26,378 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-10 02:11:26,378 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338032359]
[2022-01-10 02:11:26,379 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 02:11:26,379 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-10 02:11:26,379 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 02:11:26,380 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-10 02:11:26,380 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-10 02:11:26,380 INFO  L87              Difference]: Start difference. First operand 29 states and 32 transitions. Second operand  has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 02:11:26,419 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 02:11:26,420 INFO  L93              Difference]: Finished difference Result 36 states and 39 transitions.
[2022-01-10 02:11:26,420 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-01-10 02:11:26,420 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11
[2022-01-10 02:11:26,420 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 02:11:26,421 INFO  L225             Difference]: With dead ends: 36
[2022-01-10 02:11:26,421 INFO  L226             Difference]: Without dead ends: 30
[2022-01-10 02:11:26,421 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 02:11:26,422 INFO  L933         BasicCegarLoop]: 29 mSDtfsCounter, 4 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 02:11:26,422 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 82 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 02:11:26,423 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2022-01-10 02:11:26,426 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30.
[2022-01-10 02:11:26,426 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 30 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2022-01-10 02:11:26,426 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions.
[2022-01-10 02:11:26,427 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 11
[2022-01-10 02:11:26,427 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 02:11:26,427 INFO  L470      AbstractCegarLoop]: Abstraction has 30 states and 33 transitions.
[2022-01-10 02:11:26,427 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 02:11:26,427 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions.
[2022-01-10 02:11:26,427 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2022-01-10 02:11:26,427 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 02:11:26,428 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 02:11:26,428 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-01-10 02:11:26,428 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 02:11:26,428 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 02:11:26,428 INFO  L85        PathProgramCache]: Analyzing trace with hash -659390950, now seen corresponding path program 1 times
[2022-01-10 02:11:26,429 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 02:11:26,429 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61606169]
[2022-01-10 02:11:26,429 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 02:11:26,429 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 02:11:26,438 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 02:11:26,438 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [284832766]
[2022-01-10 02:11:26,438 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 02:11:26,439 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 02:11:26,439 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 02:11:26,443 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 02:11:26,462 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 02:11:26,502 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 02:11:26,503 INFO  L263         TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core
[2022-01-10 02:11:26,506 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 02:11:26,608 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 02:11:26,608 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 02:11:26,673 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 02:11:26,673 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 02:11:26,673 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61606169]
[2022-01-10 02:11:26,674 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-10 02:11:26,674 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284832766]
[2022-01-10 02:11:26,677 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [284832766] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 02:11:26,677 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-10 02:11:26,677 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2022-01-10 02:11:26,677 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749994818]
[2022-01-10 02:11:26,678 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-10 02:11:26,678 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-01-10 02:11:26,678 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 02:11:26,678 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-01-10 02:11:26,678 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2022-01-10 02:11:26,679 INFO  L87              Difference]: Start difference. First operand 30 states and 33 transitions. Second operand  has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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)
[2022-01-10 02:11:26,735 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 02:11:26,736 INFO  L93              Difference]: Finished difference Result 37 states and 40 transitions.
[2022-01-10 02:11:26,736 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2022-01-10 02:11:26,737 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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
[2022-01-10 02:11:26,737 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 02:11:26,738 INFO  L225             Difference]: With dead ends: 37
[2022-01-10 02:11:26,739 INFO  L226             Difference]: Without dead ends: 31
[2022-01-10 02:11:26,740 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90
[2022-01-10 02:11:26,742 INFO  L933         BasicCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 02:11:26,743 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 153 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 02:11:26,744 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2022-01-10 02:11:26,749 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31.
[2022-01-10 02:11:26,750 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 31 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2022-01-10 02:11:26,751 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions.
[2022-01-10 02:11:26,751 INFO  L78                 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 12
[2022-01-10 02:11:26,751 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 02:11:26,752 INFO  L470      AbstractCegarLoop]: Abstraction has 31 states and 34 transitions.
[2022-01-10 02:11:26,752 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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)
[2022-01-10 02:11:26,752 INFO  L276                IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions.
[2022-01-10 02:11:26,753 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2022-01-10 02:11:26,753 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 02:11:26,753 INFO  L514         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 02:11:26,771 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 02:11:26,959 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 02:11:26,959 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 02:11:26,960 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 02:11:26,960 INFO  L85        PathProgramCache]: Analyzing trace with hash -1659957129, now seen corresponding path program 2 times
[2022-01-10 02:11:26,960 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 02:11:26,960 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915710072]
[2022-01-10 02:11:26,960 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 02:11:26,961 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 02:11:26,969 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 02:11:26,969 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [459043589]
[2022-01-10 02:11:26,969 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-01-10 02:11:26,969 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 02:11:26,969 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 02:11:26,974 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 02:11:26,976 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 02:11:27,016 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-01-10 02:11:27,016 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 02:11:27,017 INFO  L263         TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 25 conjunts are in the unsatisfiable core
[2022-01-10 02:11:27,019 INFO  L286         TraceCheckSpWp]: Computing forward predicates...