/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/recursive/Fibonacci05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 05:58:00,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 05:58:00,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 05:58:00,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 05:58:00,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 05:58:00,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 05:58:00,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 05:58:00,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 05:58:00,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 05:58:00,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 05:58:00,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 05:58:00,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 05:58:00,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 05:58:00,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 05:58:00,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 05:58:00,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 05:58:00,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 05:58:00,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 05:58:00,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 05:58:00,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 05:58:00,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 05:58:00,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 05:58:00,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 05:58:00,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 05:58:00,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 05:58:00,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 05:58:00,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 05:58:00,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 05:58:00,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 05:58:00,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 05:58:00,732 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 05:58:00,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 05:58:00,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 05:58:00,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 05:58:00,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 05:58:00,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 05:58:00,738 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 05:58:00,758 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 05:58:00,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 05:58:00,758 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 05:58:00,759 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 05:58:00,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 05:58:00,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 05:58:00,760 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 05:58:00,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 05:58:00,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 05:58:00,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 05:58:00,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 05:58:00,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 05:58:00,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 05:58:00,761 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 05:58:00,761 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 05:58:00,761 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 05:58:00,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 05:58:00,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 05:58:00,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 05:58:00,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 05:58:00,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 05:58:00,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:58:00,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 05:58:00,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 05:58:00,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 05:58:00,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 05:58:00,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 05:58:00,762 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 05:58:00,762 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 05:58:00,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 05:58:00,763 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 05:58:00,763 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 05:58:00,766 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 05:58:00,766 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 05:58:00,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 05:58:00,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 05:58:00,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 05:58:00,987 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 05:58:00,989 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 05:58:00,990 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci05.c [2022-01-11 05:58:01,060 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9ea7171a/ba504c022d244bdda26ee29747764b30/FLAG59700c13f [2022-01-11 05:58:01,406 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 05:58:01,407 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Fibonacci05.c [2022-01-11 05:58:01,411 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9ea7171a/ba504c022d244bdda26ee29747764b30/FLAG59700c13f [2022-01-11 05:58:01,421 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9ea7171a/ba504c022d244bdda26ee29747764b30 [2022-01-11 05:58:01,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 05:58:01,424 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 05:58:01,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 05:58:01,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 05:58:01,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 05:58:01,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:58:01" (1/1) ... [2022-01-11 05:58:01,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e838ead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:58:01, skipping insertion in model container [2022-01-11 05:58:01,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:58:01" (1/1) ... [2022-01-11 05:58:01,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 05:58:01,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:58:01,570 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/Fibonacci05.c[746,759] [2022-01-11 05:58:01,572 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:58:01,600 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 05:58:01,613 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/Fibonacci05.c[746,759] [2022-01-11 05:58:01,613 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:58:01,625 INFO L208 MainTranslator]: Completed translation [2022-01-11 05:58:01,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:58:01 WrapperNode [2022-01-11 05:58:01,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 05:58:01,627 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 05:58:01,627 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 05:58:01,627 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 05:58:01,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:58:01" (1/1) ... [2022-01-11 05:58:01,641 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:58:01" (1/1) ... [2022-01-11 05:58:01,659 INFO L137 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-01-11 05:58:01,660 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 05:58:01,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 05:58:01,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 05:58:01,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 05:58:01,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:58:01" (1/1) ... [2022-01-11 05:58:01,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:58:01" (1/1) ... [2022-01-11 05:58:01,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:58:01" (1/1) ... [2022-01-11 05:58:01,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:58:01" (1/1) ... [2022-01-11 05:58:01,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:58:01" (1/1) ... [2022-01-11 05:58:01,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:58:01" (1/1) ... [2022-01-11 05:58:01,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:58:01" (1/1) ... [2022-01-11 05:58:01,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 05:58:01,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 05:58:01,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 05:58:01,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 05:58:01,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:58:01" (1/1) ... [2022-01-11 05:58:01,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:58:01,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:58:01,749 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 05:58:01,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 05:58:01,786 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2022-01-11 05:58:01,786 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2022-01-11 05:58:01,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 05:58:01,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 05:58:01,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 05:58:01,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 05:58:01,841 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 05:58:01,842 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 05:58:01,912 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 05:58:01,917 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 05:58:01,917 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 05:58:01,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:58:01 BoogieIcfgContainer [2022-01-11 05:58:01,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 05:58:01,919 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 05:58:01,919 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 05:58:01,921 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 05:58:01,923 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:58:01" (1/1) ... [2022-01-11 05:58:02,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:58:02 BasicIcfg [2022-01-11 05:58:02,015 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 05:58:02,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 05:58:02,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 05:58:02,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 05:58:02,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 05:58:01" (1/4) ... [2022-01-11 05:58:02,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29961cc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:58:02, skipping insertion in model container [2022-01-11 05:58:02,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:58:01" (2/4) ... [2022-01-11 05:58:02,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29961cc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:58:02, skipping insertion in model container [2022-01-11 05:58:02,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:58:01" (3/4) ... [2022-01-11 05:58:02,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29961cc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 05:58:02, skipping insertion in model container [2022-01-11 05:58:02,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:58:02" (4/4) ... [2022-01-11 05:58:02,022 INFO L111 eAbstractionObserver]: Analyzing ICFG Fibonacci05.cTransformedIcfg [2022-01-11 05:58:02,026 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 05:58:02,027 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 05:58:02,081 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 05:58:02,088 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 05:58:02,088 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 05:58:02,099 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-11 05:58:02,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-11 05:58:02,102 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:58:02,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:58:02,103 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:58:02,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:58:02,108 INFO L85 PathProgramCache]: Analyzing trace with hash 831073435, now seen corresponding path program 1 times [2022-01-11 05:58:02,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:58:02,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731441150] [2022-01-11 05:58:02,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:58:02,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:58:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:02,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 05:58:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:02,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:58:02,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:58:02,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731441150] [2022-01-11 05:58:02,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731441150] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:58:02,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:58:02,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:58:02,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146493819] [2022-01-11 05:58:02,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:58:02,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:58:02,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:58:02,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:58:02,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:58:02,400 INFO L87 Difference]: Start difference. First operand has 18 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-11 05:58:02,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:58:02,512 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2022-01-11 05:58:02,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:58:02,516 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-01-11 05:58:02,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:58:02,522 INFO L225 Difference]: With dead ends: 30 [2022-01-11 05:58:02,522 INFO L226 Difference]: Without dead ends: 17 [2022-01-11 05:58:02,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:58:02,528 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 10 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:58:02,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 38 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:58:02,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-01-11 05:58:02,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-01-11 05:58:02,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-11 05:58:02,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-01-11 05:58:02,558 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2022-01-11 05:58:02,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:58:02,558 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-01-11 05:58:02,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-11 05:58:02,559 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-01-11 05:58:02,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-11 05:58:02,560 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:58:02,560 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:58:02,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 05:58:02,561 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:58:02,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:58:02,561 INFO L85 PathProgramCache]: Analyzing trace with hash 901827128, now seen corresponding path program 1 times [2022-01-11 05:58:02,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:58:02,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374587753] [2022-01-11 05:58:02,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:58:02,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:58:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:02,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 05:58:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:02,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:58:02,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:58:02,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374587753] [2022-01-11 05:58:02,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374587753] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:58:02,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:58:02,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:58:02,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367474792] [2022-01-11 05:58:02,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:58:02,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:58:02,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:58:02,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:58:02,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:58:02,670 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-11 05:58:02,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:58:02,721 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2022-01-11 05:58:02,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:58:02,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-01-11 05:58:02,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:58:02,723 INFO L225 Difference]: With dead ends: 23 [2022-01-11 05:58:02,723 INFO L226 Difference]: Without dead ends: 19 [2022-01-11 05:58:02,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:58:02,725 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:58:02,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 32 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:58:02,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-01-11 05:58:02,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2022-01-11 05:58:02,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-01-11 05:58:02,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-01-11 05:58:02,731 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 11 [2022-01-11 05:58:02,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:58:02,732 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-01-11 05:58:02,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-11 05:58:02,732 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-01-11 05:58:02,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-11 05:58:02,733 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:58:02,733 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:58:02,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 05:58:02,734 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:58:02,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:58:02,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1720611576, now seen corresponding path program 1 times [2022-01-11 05:58:02,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:58:02,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754463750] [2022-01-11 05:58:02,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:58:02,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:58:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:02,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 05:58:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:03,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:03,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:03,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-11 05:58:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:03,177 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-11 05:58:03,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:58:03,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754463750] [2022-01-11 05:58:03,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754463750] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:58:03,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146175995] [2022-01-11 05:58:03,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:58:03,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:58:03,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:58:03,181 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 05:58:03,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 05:58:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:03,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-11 05:58:03,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:58:03,607 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-11 05:58:03,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 05:58:04,396 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-11 05:58:04,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146175995] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 05:58:04,397 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 05:58:04,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 16 [2022-01-11 05:58:04,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92072131] [2022-01-11 05:58:04,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 05:58:04,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-11 05:58:04,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:58:04,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-11 05:58:04,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-01-11 05:58:04,399 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 16 states have internal predecessors, (35), 7 states have call successors, (7), 1 states have call predecessors, (7), 7 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) [2022-01-11 05:58:04,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:58:04,918 INFO L93 Difference]: Finished difference Result 43 states and 66 transitions. [2022-01-11 05:58:04,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-11 05:58:04,918 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 16 states have internal predecessors, (35), 7 states have call successors, (7), 1 states have call predecessors, (7), 7 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) Word has length 22 [2022-01-11 05:58:04,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:58:04,920 INFO L225 Difference]: With dead ends: 43 [2022-01-11 05:58:04,920 INFO L226 Difference]: Without dead ends: 27 [2022-01-11 05:58:04,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2022-01-11 05:58:04,922 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 41 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 05:58:04,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 54 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 05:58:04,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-11 05:58:04,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-01-11 05:58:04,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 19 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-01-11 05:58:04,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 39 transitions. [2022-01-11 05:58:04,930 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 39 transitions. Word has length 22 [2022-01-11 05:58:04,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:58:04,930 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 39 transitions. [2022-01-11 05:58:04,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 16 states have internal predecessors, (35), 7 states have call successors, (7), 1 states have call predecessors, (7), 7 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) [2022-01-11 05:58:04,931 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 39 transitions. [2022-01-11 05:58:04,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-11 05:58:04,935 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:58:04,935 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:58:04,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-11 05:58:05,156 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 [2022-01-11 05:58:05,157 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:58:05,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:58:05,158 INFO L85 PathProgramCache]: Analyzing trace with hash -454623176, now seen corresponding path program 1 times [2022-01-11 05:58:05,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:58:05,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495197982] [2022-01-11 05:58:05,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:58:05,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:58:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:05,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 05:58:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:05,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:05,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:05,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:05,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:58:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:05,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:05,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:05,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:05,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:05,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:05,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:05,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:58:05,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:05,556 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 16 proven. 77 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-01-11 05:58:05,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:58:05,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495197982] [2022-01-11 05:58:05,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495197982] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:58:05,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919727789] [2022-01-11 05:58:05,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:58:05,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:58:05,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:58:05,564 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 05:58:05,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 05:58:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:05,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-11 05:58:05,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:58:06,088 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 46 proven. 57 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-01-11 05:58:06,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 05:58:06,851 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 61 proven. 56 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-01-11 05:58:06,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919727789] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 05:58:06,851 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 05:58:06,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 9] total 22 [2022-01-11 05:58:06,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236884525] [2022-01-11 05:58:06,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 05:58:06,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-11 05:58:06,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:58:06,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-11 05:58:06,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2022-01-11 05:58:06,854 INFO L87 Difference]: Start difference. First operand 27 states and 39 transitions. Second operand has 22 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (20), 15 states have call predecessors, (20), 11 states have call successors, (20) [2022-01-11 05:58:07,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:58:07,414 INFO L93 Difference]: Finished difference Result 72 states and 121 transitions. [2022-01-11 05:58:07,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-11 05:58:07,415 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (20), 15 states have call predecessors, (20), 11 states have call successors, (20) Word has length 61 [2022-01-11 05:58:07,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:58:07,416 INFO L225 Difference]: With dead ends: 72 [2022-01-11 05:58:07,417 INFO L226 Difference]: Without dead ends: 47 [2022-01-11 05:58:07,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 120 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=210, Invalid=660, Unknown=0, NotChecked=0, Total=870 [2022-01-11 05:58:07,418 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 55 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 05:58:07,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 99 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 05:58:07,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-01-11 05:58:07,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2022-01-11 05:58:07,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 27 states have internal predecessors, (28), 6 states have call successors, (6), 3 states have call predecessors, (6), 8 states have return successors, (23), 10 states have call predecessors, (23), 6 states have call successors, (23) [2022-01-11 05:58:07,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 57 transitions. [2022-01-11 05:58:07,431 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 57 transitions. Word has length 61 [2022-01-11 05:58:07,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:58:07,431 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 57 transitions. [2022-01-11 05:58:07,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (20), 15 states have call predecessors, (20), 11 states have call successors, (20) [2022-01-11 05:58:07,432 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 57 transitions. [2022-01-11 05:58:07,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-11 05:58:07,433 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:58:07,433 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:58:07,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-11 05:58:07,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-11 05:58:07,656 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:58:07,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:58:07,656 INFO L85 PathProgramCache]: Analyzing trace with hash -2048037148, now seen corresponding path program 2 times [2022-01-11 05:58:07,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:58:07,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062894495] [2022-01-11 05:58:07,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:58:07,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:58:07,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:07,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 05:58:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:07,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:07,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:07,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:07,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:07,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:07,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:58:07,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:07,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 05:58:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:07,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:07,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:07,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:07,943 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 35 proven. 56 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-01-11 05:58:07,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:58:07,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062894495] [2022-01-11 05:58:07,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062894495] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:58:07,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823378719] [2022-01-11 05:58:07,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 05:58:07,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:58:07,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:58:07,945 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 05:58:07,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-11 05:58:08,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 05:58:08,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 05:58:08,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-11 05:58:08,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:58:24,676 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 36 proven. 53 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-01-11 05:58:24,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 05:58:25,918 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 34 proven. 59 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-01-11 05:58:25,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823378719] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 05:58:25,918 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 05:58:25,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 10] total 21 [2022-01-11 05:58:25,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813294609] [2022-01-11 05:58:25,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 05:58:25,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-11 05:58:25,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:58:25,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-11 05:58:25,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=334, Unknown=1, NotChecked=0, Total=420 [2022-01-11 05:58:25,921 INFO L87 Difference]: Start difference. First operand 41 states and 57 transitions. Second operand has 21 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 21 states have internal predecessors, (48), 9 states have call successors, (14), 1 states have call predecessors, (14), 9 states have return successors, (17), 13 states have call predecessors, (17), 9 states have call successors, (17) [2022-01-11 05:58:41,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:58:41,847 INFO L93 Difference]: Finished difference Result 108 states and 225 transitions. [2022-01-11 05:58:41,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-11 05:58:41,848 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 21 states have internal predecessors, (48), 9 states have call successors, (14), 1 states have call predecessors, (14), 9 states have return successors, (17), 13 states have call predecessors, (17), 9 states have call successors, (17) Word has length 61 [2022-01-11 05:58:41,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:58:41,851 INFO L225 Difference]: With dead ends: 108 [2022-01-11 05:58:41,851 INFO L226 Difference]: Without dead ends: 66 [2022-01-11 05:58:41,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 124 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=203, Invalid=606, Unknown=3, NotChecked=0, Total=812 [2022-01-11 05:58:41,853 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 40 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:58:41,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 95 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 179 Invalid, 0 Unknown, 26 Unchecked, 1.0s Time] [2022-01-11 05:58:41,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-01-11 05:58:41,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2022-01-11 05:58:41,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 38 states have internal predecessors, (41), 10 states have call successors, (10), 4 states have call predecessors, (10), 12 states have return successors, (69), 17 states have call predecessors, (69), 10 states have call successors, (69) [2022-01-11 05:58:41,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 120 transitions. [2022-01-11 05:58:41,869 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 120 transitions. Word has length 61 [2022-01-11 05:58:41,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:58:41,869 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 120 transitions. [2022-01-11 05:58:41,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 21 states have internal predecessors, (48), 9 states have call successors, (14), 1 states have call predecessors, (14), 9 states have return successors, (17), 13 states have call predecessors, (17), 9 states have call successors, (17) [2022-01-11 05:58:41,870 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 120 transitions. [2022-01-11 05:58:41,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 05:58:41,872 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:58:41,872 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 11, 7, 7, 7, 7, 7, 7, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:58:41,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-11 05:58:42,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:58:42,088 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:58:42,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:58:42,088 INFO L85 PathProgramCache]: Analyzing trace with hash 578733144, now seen corresponding path program 3 times [2022-01-11 05:58:42,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:58:42,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629009660] [2022-01-11 05:58:42,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:58:42,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:58:42,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:42,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 05:58:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:42,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:42,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:42,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:42,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:42,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:42,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:42,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:42,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:42,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:58:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:42,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 05:58:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:42,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-01-11 05:58:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:42,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:42,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:42,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:42,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:42,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:42,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:58:42,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:42,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 05:58:42,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:42,717 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 60 proven. 169 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2022-01-11 05:58:42,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:58:42,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629009660] [2022-01-11 05:58:42,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629009660] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:58:42,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238913342] [2022-01-11 05:58:42,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-11 05:58:42,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:58:42,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:58:42,724 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 05:58:42,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-11 05:58:42,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-01-11 05:58:42,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 05:58:42,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-11 05:58:42,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:58:43,342 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 195 proven. 16 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-01-11 05:58:43,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 05:58:44,698 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 190 proven. 17 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2022-01-11 05:58:44,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238913342] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 05:58:44,699 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 05:58:44,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 9] total 29 [2022-01-11 05:58:44,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702477473] [2022-01-11 05:58:44,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 05:58:44,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-11 05:58:44,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:58:44,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-11 05:58:44,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=696, Unknown=0, NotChecked=0, Total=812 [2022-01-11 05:58:44,701 INFO L87 Difference]: Start difference. First operand 60 states and 120 transitions. Second operand has 29 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 25 states have internal predecessors, (59), 11 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (19), 15 states have call predecessors, (19), 11 states have call successors, (19) [2022-01-11 05:58:46,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:58:46,340 INFO L93 Difference]: Finished difference Result 123 states and 265 transitions. [2022-01-11 05:58:46,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-11 05:58:46,341 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 25 states have internal predecessors, (59), 11 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (19), 15 states have call predecessors, (19), 11 states have call successors, (19) Word has length 98 [2022-01-11 05:58:46,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:58:46,343 INFO L225 Difference]: With dead ends: 123 [2022-01-11 05:58:46,343 INFO L226 Difference]: Without dead ends: 62 [2022-01-11 05:58:46,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 206 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=424, Invalid=1556, Unknown=0, NotChecked=0, Total=1980 [2022-01-11 05:58:46,346 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 109 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-11 05:58:46,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 177 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-11 05:58:46,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-01-11 05:58:46,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 55. [2022-01-11 05:58:46,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 35 states have internal predecessors, (39), 10 states have call successors, (10), 6 states have call predecessors, (10), 8 states have return successors, (30), 13 states have call predecessors, (30), 10 states have call successors, (30) [2022-01-11 05:58:46,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 79 transitions. [2022-01-11 05:58:46,372 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 79 transitions. Word has length 98 [2022-01-11 05:58:46,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:58:46,372 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 79 transitions. [2022-01-11 05:58:46,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 25 states have internal predecessors, (59), 11 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (19), 15 states have call predecessors, (19), 11 states have call successors, (19) [2022-01-11 05:58:46,373 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 79 transitions. [2022-01-11 05:58:46,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-01-11 05:58:46,375 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:58:46,376 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 18, 11, 11, 11, 11, 11, 11, 7, 5, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:58:46,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-11 05:58:46,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:58:46,578 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:58:46,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:58:46,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1622505837, now seen corresponding path program 4 times [2022-01-11 05:58:46,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:58:46,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9412355] [2022-01-11 05:58:46,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:58:46,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:58:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:46,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 05:58:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:47,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:47,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:47,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:47,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:47,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:47,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:47,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:47,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:47,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:58:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:47,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 05:58:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:47,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:47,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:47,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-11 05:58:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:47,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:47,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:47,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:47,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:47,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-11 05:58:47,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:47,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:47,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:47,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:47,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:47,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:47,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:47,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:58:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:47,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 05:58:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:47,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:58:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:47,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:58:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:58:47,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 173 proven. 442 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2022-01-11 05:58:47,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:58:47,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9412355] [2022-01-11 05:58:47,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9412355] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:58:47,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041620328] [2022-01-11 05:58:47,812 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-11 05:58:47,812 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:58:47,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:58:47,816 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 05:58:47,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-11 05:58:48,417 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-11 05:58:48,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 05:58:48,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 38 conjunts are in the unsatisfiable core [2022-01-11 05:58:48,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:58:55,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 409 proven. 119 refuted. 0 times theorem prover too weak. 802 trivial. 0 not checked. [2022-01-11 05:58:55,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 05:58:57,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 297 proven. 92 refuted. 0 times theorem prover too weak. 941 trivial. 0 not checked. [2022-01-11 05:58:57,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041620328] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 05:58:57,724 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 05:58:57,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 14, 13] total 41 [2022-01-11 05:58:57,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158524532] [2022-01-11 05:58:57,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 05:58:57,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-11 05:58:57,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:58:57,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-11 05:58:57,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1410, Unknown=0, NotChecked=0, Total=1640 [2022-01-11 05:58:57,727 INFO L87 Difference]: Start difference. First operand 55 states and 79 transitions. Second operand has 41 states, 35 states have (on average 2.3142857142857145) internal successors, (81), 38 states have internal predecessors, (81), 19 states have call successors, (26), 1 states have call predecessors, (26), 16 states have return successors, (29), 23 states have call predecessors, (29), 19 states have call successors, (29) [2022-01-11 05:59:06,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:59:06,367 INFO L93 Difference]: Finished difference Result 132 states and 263 transitions. [2022-01-11 05:59:06,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-11 05:59:06,368 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 35 states have (on average 2.3142857142857145) internal successors, (81), 38 states have internal predecessors, (81), 19 states have call successors, (26), 1 states have call predecessors, (26), 16 states have return successors, (29), 23 states have call predecessors, (29), 19 states have call successors, (29) Word has length 149 [2022-01-11 05:59:06,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:59:06,372 INFO L225 Difference]: With dead ends: 132 [2022-01-11 05:59:06,372 INFO L226 Difference]: Without dead ends: 76 [2022-01-11 05:59:06,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 314 SyntacticMatches, 6 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=636, Invalid=2670, Unknown=0, NotChecked=0, Total=3306 [2022-01-11 05:59:06,374 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 146 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-01-11 05:59:06,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 271 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-01-11 05:59:06,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-01-11 05:59:06,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2022-01-11 05:59:06,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 47 states have internal predecessors, (50), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (54), 16 states have call predecessors, (54), 16 states have call successors, (54) [2022-01-11 05:59:06,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 120 transitions. [2022-01-11 05:59:06,390 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 120 transitions. Word has length 149 [2022-01-11 05:59:06,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:59:06,391 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 120 transitions. [2022-01-11 05:59:06,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 35 states have (on average 2.3142857142857145) internal successors, (81), 38 states have internal predecessors, (81), 19 states have call successors, (26), 1 states have call predecessors, (26), 16 states have return successors, (29), 23 states have call predecessors, (29), 19 states have call successors, (29) [2022-01-11 05:59:06,391 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 120 transitions. [2022-01-11 05:59:06,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-01-11 05:59:06,393 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:59:06,393 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 25, 15, 15, 15, 15, 15, 15, 10, 6, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:59:06,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-11 05:59:06,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:59:06,600 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:59:06,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:59:06,600 INFO L85 PathProgramCache]: Analyzing trace with hash -235190864, now seen corresponding path program 5 times [2022-01-11 05:59:06,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:59:06,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035250668] [2022-01-11 05:59:06,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:59:06,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:59:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:06,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-11 05:59:06,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:07,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:07,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:07,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:07,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:07,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:07,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:07,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:07,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:59:07,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:07,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:59:07,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:07,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 05:59:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:07,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:07,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:59:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:07,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-11 05:59:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:07,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:07,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:07,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:59:07,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:07,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:59:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:07,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-01-11 05:59:07,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:07,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:07,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:07,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:07,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:07,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:07,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:59:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:07,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:59:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:07,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-01-11 05:59:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:07,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:07,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:07,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:59:07,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:07,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-01-11 05:59:07,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:07,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:07,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-11 05:59:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:07,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-11 05:59:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:07,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-11 05:59:07,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:59:07,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2475 backedges. 105 proven. 764 refuted. 0 times theorem prover too weak. 1606 trivial. 0 not checked. [2022-01-11 05:59:07,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:59:07,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035250668] [2022-01-11 05:59:07,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035250668] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:59:07,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865430519] [2022-01-11 05:59:07,892 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-11 05:59:07,892 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:59:07,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:59:07,896 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 05:59:07,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process