/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/bitvector/gcd_3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 20:07:20,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 20:07:20,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 20:07:20,516 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 20:07:20,516 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 20:07:20,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 20:07:20,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 20:07:20,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 20:07:20,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 20:07:20,520 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 20:07:20,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 20:07:20,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 20:07:20,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 20:07:20,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 20:07:20,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 20:07:20,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 20:07:20,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 20:07:20,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 20:07:20,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 20:07:20,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 20:07:20,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 20:07:20,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 20:07:20,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 20:07:20,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 20:07:20,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 20:07:20,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 20:07:20,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 20:07:20,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 20:07:20,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 20:07:20,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 20:07:20,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 20:07:20,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 20:07:20,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 20:07:20,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 20:07:20,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 20:07:20,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 20:07:20,568 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 20:07:20,583 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 20:07:20,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 20:07:20,583 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 20:07:20,584 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 20:07:20,584 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 20:07:20,585 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 20:07:20,585 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 20:07:20,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 20:07:20,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 20:07:20,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 20:07:20,585 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 20:07:20,585 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 20:07:20,585 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 20:07:20,586 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 20:07:20,586 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 20:07:20,586 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 20:07:20,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 20:07:20,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 20:07:20,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 20:07:20,586 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 20:07:20,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 20:07:20,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:07:20,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 20:07:20,587 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 20:07:20,591 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 20:07:20,592 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 20:07:20,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 20:07:20,592 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 20:07:20,592 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 20:07:20,592 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 20:07:20,592 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 20:07:20,593 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 20:07:20,594 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 20:07:20,594 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 20:07:20,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 20:07:20,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 20:07:20,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 20:07:20,789 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 20:07:20,791 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 20:07:20,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/gcd_3.c [2022-01-10 20:07:20,845 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/055cc9a76/df51d55e831b4a52a54df8cdeabbb40c/FLAG79a524a34 [2022-01-10 20:07:21,186 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 20:07:21,187 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/gcd_3.c [2022-01-10 20:07:21,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/055cc9a76/df51d55e831b4a52a54df8cdeabbb40c/FLAG79a524a34 [2022-01-10 20:07:21,203 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/055cc9a76/df51d55e831b4a52a54df8cdeabbb40c [2022-01-10 20:07:21,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 20:07:21,208 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 20:07:21,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 20:07:21,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 20:07:21,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 20:07:21,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:07:21" (1/1) ... [2022-01-10 20:07:21,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b91c010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:07:21, skipping insertion in model container [2022-01-10 20:07:21,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:07:21" (1/1) ... [2022-01-10 20:07:21,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 20:07:21,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 20:07:21,346 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/gcd_3.c[664,677] [2022-01-10 20:07:21,358 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:07:21,369 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 20:07:21,382 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/gcd_3.c[664,677] [2022-01-10 20:07:21,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:07:21,393 INFO L208 MainTranslator]: Completed translation [2022-01-10 20:07:21,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:07:21 WrapperNode [2022-01-10 20:07:21,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 20:07:21,394 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 20:07:21,394 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 20:07:21,395 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 20:07:21,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:07:21" (1/1) ... [2022-01-10 20:07:21,406 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:07:21" (1/1) ... [2022-01-10 20:07:21,417 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 44 [2022-01-10 20:07:21,418 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 20:07:21,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 20:07:21,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 20:07:21,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 20:07:21,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:07:21" (1/1) ... [2022-01-10 20:07:21,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:07:21" (1/1) ... [2022-01-10 20:07:21,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:07:21" (1/1) ... [2022-01-10 20:07:21,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:07:21" (1/1) ... [2022-01-10 20:07:21,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:07:21" (1/1) ... [2022-01-10 20:07:21,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:07:21" (1/1) ... [2022-01-10 20:07:21,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:07:21" (1/1) ... [2022-01-10 20:07:21,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 20:07:21,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 20:07:21,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 20:07:21,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 20:07:21,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:07:21" (1/1) ... [2022-01-10 20:07:21,445 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:07:21,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:07:21,468 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 20:07:21,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 20:07:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 20:07:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 20:07:21,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 20:07:21,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 20:07:21,544 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 20:07:21,545 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 20:07:21,694 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 20:07:21,698 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 20:07:21,698 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 20:07:21,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:07:21 BoogieIcfgContainer [2022-01-10 20:07:21,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 20:07:21,699 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 20:07:21,699 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 20:07:21,704 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 20:07:21,706 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:07:21" (1/1) ... [2022-01-10 20:07:21,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:07:21 BasicIcfg [2022-01-10 20:07:21,832 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 20:07:21,833 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 20:07:21,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 20:07:21,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 20:07:21,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:07:21" (1/4) ... [2022-01-10 20:07:21,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@582aa818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:07:21, skipping insertion in model container [2022-01-10 20:07:21,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:07:21" (2/4) ... [2022-01-10 20:07:21,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@582aa818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:07:21, skipping insertion in model container [2022-01-10 20:07:21,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:07:21" (3/4) ... [2022-01-10 20:07:21,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@582aa818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:07:21, skipping insertion in model container [2022-01-10 20:07:21,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:07:21" (4/4) ... [2022-01-10 20:07:21,863 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_3.cTransformedIcfg [2022-01-10 20:07:21,866 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 20:07:21,867 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 20:07:21,910 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 20:07:21,915 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 20:07:21,915 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 20:07:21,926 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:07:21,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 20:07:21,930 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:07:21,930 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:07:21,931 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:07:21,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:07:21,936 INFO L85 PathProgramCache]: Analyzing trace with hash 2048361899, now seen corresponding path program 1 times [2022-01-10 20:07:21,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:07:21,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114760183] [2022-01-10 20:07:21,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:07:21,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:07:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:07:22,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:07:22,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:07:22,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114760183] [2022-01-10 20:07:22,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114760183] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:07:22,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:07:22,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:07:22,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486635847] [2022-01-10 20:07:22,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:07:22,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 20:07:22,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:07:22,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 20:07:22,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 20:07:22,162 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:07:22,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:07:22,174 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2022-01-10 20:07:22,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 20:07:22,177 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2022-01-10 20:07:22,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:07:22,182 INFO L225 Difference]: With dead ends: 27 [2022-01-10 20:07:22,182 INFO L226 Difference]: Without dead ends: 11 [2022-01-10 20:07:22,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 20:07:22,189 INFO L933 BasicCegarLoop]: 19 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, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:07:22,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:07:22,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-01-10 20:07:22,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-01-10 20:07:22,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:07:22,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2022-01-10 20:07:22,214 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 10 [2022-01-10 20:07:22,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:07:22,215 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2022-01-10 20:07:22,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:07:22,216 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2022-01-10 20:07:22,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 20:07:22,217 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:07:22,217 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:07:22,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 20:07:22,218 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:07:22,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:07:22,220 INFO L85 PathProgramCache]: Analyzing trace with hash 2076991050, now seen corresponding path program 1 times [2022-01-10 20:07:22,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:07:22,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747696911] [2022-01-10 20:07:22,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:07:22,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:07:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:07:22,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:07:22,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:07:22,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747696911] [2022-01-10 20:07:22,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747696911] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:07:22,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:07:22,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 20:07:22,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255263904] [2022-01-10 20:07:22,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:07:22,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 20:07:22,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:07:22,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 20:07:22,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 20:07:22,625 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:07:24,639 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 20:07:24,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:07:24,763 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-01-10 20:07:24,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 20:07:24,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2022-01-10 20:07:24,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:07:24,764 INFO L225 Difference]: With dead ends: 26 [2022-01-10 20:07:24,765 INFO L226 Difference]: Without dead ends: 18 [2022-01-10 20:07:24,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 20:07:24,766 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 15 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:07:24,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 22 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 20:07:24,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-01-10 20:07:24,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 11. [2022-01-10 20:07:24,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 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 20:07:24,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-01-10 20:07:24,768 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 10 [2022-01-10 20:07:24,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:07:24,768 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-01-10 20:07:24,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:07:24,769 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-01-10 20:07:24,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 20:07:24,769 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:07:24,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:07:24,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 20:07:24,769 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:07:24,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:07:24,770 INFO L85 PathProgramCache]: Analyzing trace with hash -475165911, now seen corresponding path program 1 times [2022-01-10 20:07:24,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:07:24,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485635385] [2022-01-10 20:07:24,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:07:24,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:07:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:07:24,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:07:24,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:07:24,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485635385] [2022-01-10 20:07:24,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485635385] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:07:24,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:07:24,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 20:07:24,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834304856] [2022-01-10 20:07:24,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:07:24,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 20:07:24,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:07:24,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 20:07:24,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 20:07:24,886 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:07:26,891 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 20:07:27,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:07:27,110 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2022-01-10 20:07:27,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 20:07:27,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2022-01-10 20:07:27,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:07:27,112 INFO L225 Difference]: With dead ends: 18 [2022-01-10 20:07:27,112 INFO L226 Difference]: Without dead ends: 12 [2022-01-10 20:07:27,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 20:07:27,113 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 7 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 20:07:27,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 16 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 20:07:27,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-01-10 20:07:27,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-01-10 20:07:27,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:07:27,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-01-10 20:07:27,116 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2022-01-10 20:07:27,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:07:27,116 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-01-10 20:07:27,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:07:27,116 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-01-10 20:07:27,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 20:07:27,117 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:07:27,117 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:07:27,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 20:07:27,117 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:07:27,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:07:27,117 INFO L85 PathProgramCache]: Analyzing trace with hash 412337770, now seen corresponding path program 1 times [2022-01-10 20:07:27,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:07:27,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761230139] [2022-01-10 20:07:27,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:07:27,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:07:27,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:07:27,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:07:27,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:07:27,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761230139] [2022-01-10 20:07:27,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761230139] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:07:27,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:07:27,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 20:07:27,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009056783] [2022-01-10 20:07:27,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:07:27,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 20:07:27,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:07:27,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 20:07:27,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 20:07:27,705 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:07:28,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:07:28,317 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-01-10 20:07:28,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:07:28,318 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 10 [2022-01-10 20:07:28,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:07:28,318 INFO L225 Difference]: With dead ends: 19 [2022-01-10 20:07:28,318 INFO L226 Difference]: Without dead ends: 13 [2022-01-10 20:07:28,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 20:07:28,319 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 7 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 20:07:28,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 30 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 20:07:28,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-01-10 20:07:28,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2022-01-10 20:07:28,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:07:28,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-01-10 20:07:28,322 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2022-01-10 20:07:28,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:07:28,322 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-01-10 20:07:28,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:07:28,322 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-01-10 20:07:28,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 20:07:28,323 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:07:28,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:07:28,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 20:07:28,323 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:07:28,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:07:28,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1015951235, now seen corresponding path program 1 times [2022-01-10 20:07:28,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:07:28,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589352750] [2022-01-10 20:07:28,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:07:28,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:07:28,335 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:07:28,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [781266426] [2022-01-10 20:07:28,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:07:28,336 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:07:28,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:07:28,337 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:07:28,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process