/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_BITWISE.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 10:12:02,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 10:12:02,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 10:12:02,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 10:12:02,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 10:12:02,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 10:12:02,752 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 10:12:02,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 10:12:02,759 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 10:12:02,763 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 10:12:02,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 10:12:02,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 10:12:02,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 10:12:02,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 10:12:02,768 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 10:12:02,771 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 10:12:02,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 10:12:02,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 10:12:02,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 10:12:02,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 10:12:02,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 10:12:02,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 10:12:02,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 10:12:02,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 10:12:02,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 10:12:02,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 10:12:02,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 10:12:02,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 10:12:02,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 10:12:02,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 10:12:02,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 10:12:02,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 10:12:02,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 10:12:02,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 10:12:02,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 10:12:02,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 10:12:02,803 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 10:12:02,828 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 10:12:02,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 10:12:02,828 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 10:12:02,829 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 10:12:02,829 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 10:12:02,830 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 10:12:02,830 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 10:12:02,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 10:12:02,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 10:12:02,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 10:12:02,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 10:12:02,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 10:12:02,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 10:12:02,831 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 10:12:02,831 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 10:12:02,831 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 10:12:02,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 10:12:02,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 10:12:02,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 10:12:02,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 10:12:02,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 10:12:02,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 10:12:02,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 10:12:02,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 10:12:02,832 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 10:12:02,832 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 10:12:02,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 10:12:02,832 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 10:12:02,832 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 10:12:02,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 10:12:02,833 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 10:12:02,833 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 10:12:02,833 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 10:12:02,833 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 10:12:03,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 10:12:03,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 10:12:03,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 10:12:03,048 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 10:12:03,051 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 10:12:03,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label43.c [2022-01-10 10:12:03,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37e9dd5d2/3bc68876985146b6ac3d9347f5c73584/FLAGeb9438b74 [2022-01-10 10:12:03,604 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 10:12:03,604 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label43.c [2022-01-10 10:12:03,636 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37e9dd5d2/3bc68876985146b6ac3d9347f5c73584/FLAGeb9438b74 [2022-01-10 10:12:03,840 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37e9dd5d2/3bc68876985146b6ac3d9347f5c73584 [2022-01-10 10:12:03,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 10:12:03,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 10:12:03,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 10:12:03,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 10:12:03,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 10:12:03,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 10:12:03" (1/1) ... [2022-01-10 10:12:03,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40ff6304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:12:03, skipping insertion in model container [2022-01-10 10:12:03,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 10:12:03" (1/1) ... [2022-01-10 10:12:03,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 10:12:03,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 10:12:04,375 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label43.c[54461,54474] [2022-01-10 10:12:04,433 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 10:12:04,442 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 10:12:04,606 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label43.c[54461,54474] [2022-01-10 10:12:04,630 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 10:12:04,649 INFO L208 MainTranslator]: Completed translation [2022-01-10 10:12:04,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:12:04 WrapperNode [2022-01-10 10:12:04,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 10:12:04,651 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 10:12:04,651 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 10:12:04,651 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 10:12:04,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:12:04" (1/1) ... [2022-01-10 10:12:04,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:12:04" (1/1) ... [2022-01-10 10:12:04,780 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1769 [2022-01-10 10:12:04,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 10:12:04,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 10:12:04,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 10:12:04,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 10:12:04,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:12:04" (1/1) ... [2022-01-10 10:12:04,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:12:04" (1/1) ... [2022-01-10 10:12:04,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:12:04" (1/1) ... [2022-01-10 10:12:04,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:12:04" (1/1) ... [2022-01-10 10:12:04,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:12:04" (1/1) ... [2022-01-10 10:12:04,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:12:04" (1/1) ... [2022-01-10 10:12:04,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:12:04" (1/1) ... [2022-01-10 10:12:04,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 10:12:04,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 10:12:04,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 10:12:04,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 10:12:04,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:12:04" (1/1) ... [2022-01-10 10:12:04,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 10:12:04,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 10:12:04,928 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 10:12:04,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 10:12:04,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 10:12:04,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 10:12:04,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 10:12:04,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 10:12:05,059 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 10:12:05,061 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 10:12:06,775 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 10:12:06,788 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 10:12:06,789 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 10:12:06,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 10:12:06 BoogieIcfgContainer [2022-01-10 10:12:06,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 10:12:06,794 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 10:12:06,794 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 10:12:06,795 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 10:12:06,797 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 10:12:06" (1/1) ... [2022-01-10 10:12:07,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 10:12:07 BasicIcfg [2022-01-10 10:12:07,204 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 10:12:07,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 10:12:07,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 10:12:07,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 10:12:07,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 10:12:03" (1/4) ... [2022-01-10 10:12:07,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4807a606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 10:12:07, skipping insertion in model container [2022-01-10 10:12:07,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 10:12:04" (2/4) ... [2022-01-10 10:12:07,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4807a606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 10:12:07, skipping insertion in model container [2022-01-10 10:12:07,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 10:12:06" (3/4) ... [2022-01-10 10:12:07,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4807a606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 10:12:07, skipping insertion in model container [2022-01-10 10:12:07,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 10:12:07" (4/4) ... [2022-01-10 10:12:07,212 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label43.cTransformedIcfg [2022-01-10 10:12:07,217 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 10:12:07,217 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 10:12:07,275 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 10:12:07,314 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 10:12:07,314 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 10:12:07,341 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:07,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-01-10 10:12:07,352 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:12:07,353 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 10:12:07,353 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:12:07,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:12:07,359 INFO L85 PathProgramCache]: Analyzing trace with hash 807390225, now seen corresponding path program 1 times [2022-01-10 10:12:07,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:12:07,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384571562] [2022-01-10 10:12:07,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:12:07,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 10:12:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:12:08,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 10:12:08,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 10:12:08,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384571562] [2022-01-10 10:12:08,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384571562] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 10:12:08,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 10:12:08,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 10:12:08,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557004138] [2022-01-10 10:12:08,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 10:12:08,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 10:12:08,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 10:12:08,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 10:12:08,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:12:08,119 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:09,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 10:12:09,502 INFO L93 Difference]: Finished difference Result 855 states and 1496 transitions. [2022-01-10 10:12:09,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 10:12:09,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2022-01-10 10:12:09,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 10:12:09,517 INFO L225 Difference]: With dead ends: 855 [2022-01-10 10:12:09,517 INFO L226 Difference]: Without dead ends: 460 [2022-01-10 10:12:09,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:12:09,523 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 146 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 10:12:09,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 176 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 10:12:09,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-01-10 10:12:09,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 459. [2022-01-10 10:12:09,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 458 states have (on average 1.5502183406113537) internal successors, (710), 458 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:09,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 710 transitions. [2022-01-10 10:12:09,576 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 710 transitions. Word has length 150 [2022-01-10 10:12:09,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 10:12:09,577 INFO L470 AbstractCegarLoop]: Abstraction has 459 states and 710 transitions. [2022-01-10 10:12:09,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:09,578 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 710 transitions. [2022-01-10 10:12:09,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-01-10 10:12:09,581 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:12:09,581 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 10:12:09,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 10:12:09,581 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:12:09,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:12:09,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1138725957, now seen corresponding path program 1 times [2022-01-10 10:12:09,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:12:09,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088414606] [2022-01-10 10:12:09,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:12:09,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 10:12:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:12:09,716 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 10:12:09,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 10:12:09,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088414606] [2022-01-10 10:12:09,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088414606] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 10:12:09,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 10:12:09,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 10:12:09,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017050476] [2022-01-10 10:12:09,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 10:12:09,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 10:12:09,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 10:12:09,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 10:12:09,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:12:09,719 INFO L87 Difference]: Start difference. First operand 459 states and 710 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:10,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 10:12:10,148 INFO L93 Difference]: Finished difference Result 1356 states and 2104 transitions. [2022-01-10 10:12:10,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 10:12:10,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2022-01-10 10:12:10,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 10:12:10,153 INFO L225 Difference]: With dead ends: 1356 [2022-01-10 10:12:10,153 INFO L226 Difference]: Without dead ends: 899 [2022-01-10 10:12:10,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:12:10,156 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 360 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 10:12:10,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 555 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 10:12:10,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2022-01-10 10:12:10,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 897. [2022-01-10 10:12:10,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 896 states have (on average 1.5491071428571428) internal successors, (1388), 896 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:10,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1388 transitions. [2022-01-10 10:12:10,192 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1388 transitions. Word has length 155 [2022-01-10 10:12:10,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 10:12:10,192 INFO L470 AbstractCegarLoop]: Abstraction has 897 states and 1388 transitions. [2022-01-10 10:12:10,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:10,193 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1388 transitions. [2022-01-10 10:12:10,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-10 10:12:10,196 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:12:10,196 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 10:12:10,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 10:12:10,196 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:12:10,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:12:10,197 INFO L85 PathProgramCache]: Analyzing trace with hash -2036682763, now seen corresponding path program 1 times [2022-01-10 10:12:10,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:12:10,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534975659] [2022-01-10 10:12:10,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:12:10,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 10:12:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:12:10,313 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 10:12:10,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 10:12:10,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534975659] [2022-01-10 10:12:10,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534975659] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 10:12:10,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 10:12:10,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 10:12:10,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801164636] [2022-01-10 10:12:10,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 10:12:10,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 10:12:10,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 10:12:10,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 10:12:10,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:12:10,316 INFO L87 Difference]: Start difference. First operand 897 states and 1388 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:11,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 10:12:11,372 INFO L93 Difference]: Finished difference Result 2647 states and 4116 transitions. [2022-01-10 10:12:11,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 10:12:11,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2022-01-10 10:12:11,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 10:12:11,379 INFO L225 Difference]: With dead ends: 2647 [2022-01-10 10:12:11,380 INFO L226 Difference]: Without dead ends: 1752 [2022-01-10 10:12:11,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:12:11,382 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 10:12:11,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 94 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 10:12:11,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2022-01-10 10:12:11,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1721. [2022-01-10 10:12:11,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1721 states, 1720 states have (on average 1.5162790697674418) internal successors, (2608), 1720 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:11,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1721 states to 1721 states and 2608 transitions. [2022-01-10 10:12:11,420 INFO L78 Accepts]: Start accepts. Automaton has 1721 states and 2608 transitions. Word has length 158 [2022-01-10 10:12:11,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 10:12:11,420 INFO L470 AbstractCegarLoop]: Abstraction has 1721 states and 2608 transitions. [2022-01-10 10:12:11,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:11,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1721 states and 2608 transitions. [2022-01-10 10:12:11,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-10 10:12:11,424 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:12:11,424 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 10:12:11,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 10:12:11,424 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:12:11,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:12:11,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1253299293, now seen corresponding path program 1 times [2022-01-10 10:12:11,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:12:11,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248755519] [2022-01-10 10:12:11,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:12:11,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 10:12:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:12:11,713 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 10:12:11,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 10:12:11,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248755519] [2022-01-10 10:12:11,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248755519] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 10:12:11,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 10:12:11,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 10:12:11,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639696398] [2022-01-10 10:12:11,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 10:12:11,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 10:12:11,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 10:12:11,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 10:12:11,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:12:11,716 INFO L87 Difference]: Start difference. First operand 1721 states and 2608 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:12,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 10:12:12,823 INFO L93 Difference]: Finished difference Result 5084 states and 7727 transitions. [2022-01-10 10:12:12,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 10:12:12,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2022-01-10 10:12:12,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 10:12:12,836 INFO L225 Difference]: With dead ends: 5084 [2022-01-10 10:12:12,837 INFO L226 Difference]: Without dead ends: 3365 [2022-01-10 10:12:12,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:12:12,841 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 102 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 10:12:12,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 412 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 10:12:12,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3365 states. [2022-01-10 10:12:12,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3365 to 3353. [2022-01-10 10:12:12,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3353 states, 3352 states have (on average 1.4468973747016707) internal successors, (4850), 3352 states have internal predecessors, (4850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:12,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3353 states to 3353 states and 4850 transitions. [2022-01-10 10:12:12,908 INFO L78 Accepts]: Start accepts. Automaton has 3353 states and 4850 transitions. Word has length 165 [2022-01-10 10:12:12,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 10:12:12,910 INFO L470 AbstractCegarLoop]: Abstraction has 3353 states and 4850 transitions. [2022-01-10 10:12:12,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:12,910 INFO L276 IsEmpty]: Start isEmpty. Operand 3353 states and 4850 transitions. [2022-01-10 10:12:12,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-10 10:12:12,915 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:12:12,915 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 10:12:12,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 10:12:12,916 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:12:12,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:12:12,917 INFO L85 PathProgramCache]: Analyzing trace with hash 813464433, now seen corresponding path program 1 times [2022-01-10 10:12:12,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:12:12,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227230037] [2022-01-10 10:12:12,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:12:12,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 10:12:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:12:13,075 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 10:12:13,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 10:12:13,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227230037] [2022-01-10 10:12:13,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227230037] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 10:12:13,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 10:12:13,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 10:12:13,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70115443] [2022-01-10 10:12:13,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 10:12:13,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 10:12:13,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 10:12:13,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 10:12:13,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:12:13,080 INFO L87 Difference]: Start difference. First operand 3353 states and 4850 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:14,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 10:12:14,209 INFO L93 Difference]: Finished difference Result 9956 states and 14413 transitions. [2022-01-10 10:12:14,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 10:12:14,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2022-01-10 10:12:14,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 10:12:14,232 INFO L225 Difference]: With dead ends: 9956 [2022-01-10 10:12:14,232 INFO L226 Difference]: Without dead ends: 6605 [2022-01-10 10:12:14,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:12:14,239 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 228 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 10:12:14,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 171 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 10:12:14,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6605 states. [2022-01-10 10:12:14,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6605 to 6601. [2022-01-10 10:12:14,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6601 states, 6600 states have (on average 1.3142424242424242) internal successors, (8674), 6600 states have internal predecessors, (8674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:14,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6601 states to 6601 states and 8674 transitions. [2022-01-10 10:12:14,363 INFO L78 Accepts]: Start accepts. Automaton has 6601 states and 8674 transitions. Word has length 165 [2022-01-10 10:12:14,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 10:12:14,365 INFO L470 AbstractCegarLoop]: Abstraction has 6601 states and 8674 transitions. [2022-01-10 10:12:14,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:14,368 INFO L276 IsEmpty]: Start isEmpty. Operand 6601 states and 8674 transitions. [2022-01-10 10:12:14,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-10 10:12:14,382 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:12:14,382 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 10:12:14,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 10:12:14,382 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:12:14,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:12:14,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1334745492, now seen corresponding path program 1 times [2022-01-10 10:12:14,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:12:14,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877905627] [2022-01-10 10:12:14,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:12:14,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 10:12:14,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:12:14,565 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-10 10:12:14,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 10:12:14,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877905627] [2022-01-10 10:12:14,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877905627] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 10:12:14,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 10:12:14,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 10:12:14,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168501490] [2022-01-10 10:12:14,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 10:12:14,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 10:12:14,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 10:12:14,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 10:12:14,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:12:14,568 INFO L87 Difference]: Start difference. First operand 6601 states and 8674 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:15,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 10:12:15,180 INFO L93 Difference]: Finished difference Result 13153 states and 17283 transitions. [2022-01-10 10:12:15,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 10:12:15,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2022-01-10 10:12:15,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 10:12:15,201 INFO L225 Difference]: With dead ends: 13153 [2022-01-10 10:12:15,201 INFO L226 Difference]: Without dead ends: 6554 [2022-01-10 10:12:15,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:12:15,210 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 321 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 10:12:15,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 31 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 10:12:15,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6554 states. [2022-01-10 10:12:15,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6554 to 6554. [2022-01-10 10:12:15,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6554 states, 6553 states have (on average 1.272546925072486) internal successors, (8339), 6553 states have internal predecessors, (8339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:15,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6554 states to 6554 states and 8339 transitions. [2022-01-10 10:12:15,320 INFO L78 Accepts]: Start accepts. Automaton has 6554 states and 8339 transitions. Word has length 185 [2022-01-10 10:12:15,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 10:12:15,321 INFO L470 AbstractCegarLoop]: Abstraction has 6554 states and 8339 transitions. [2022-01-10 10:12:15,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:15,321 INFO L276 IsEmpty]: Start isEmpty. Operand 6554 states and 8339 transitions. [2022-01-10 10:12:15,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-01-10 10:12:15,328 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:12:15,329 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 10:12:15,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 10:12:15,329 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:12:15,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:12:15,329 INFO L85 PathProgramCache]: Analyzing trace with hash 898382733, now seen corresponding path program 1 times [2022-01-10 10:12:15,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:12:15,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109322545] [2022-01-10 10:12:15,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:12:15,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 10:12:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:12:15,547 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 10:12:15,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 10:12:15,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109322545] [2022-01-10 10:12:15,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109322545] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 10:12:15,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 10:12:15,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 10:12:15,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247492854] [2022-01-10 10:12:15,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 10:12:15,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 10:12:15,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 10:12:15,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 10:12:15,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:12:15,549 INFO L87 Difference]: Start difference. First operand 6554 states and 8339 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:16,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 10:12:16,614 INFO L93 Difference]: Finished difference Result 15969 states and 20323 transitions. [2022-01-10 10:12:16,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 10:12:16,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 219 [2022-01-10 10:12:16,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 10:12:16,646 INFO L225 Difference]: With dead ends: 15969 [2022-01-10 10:12:16,647 INFO L226 Difference]: Without dead ends: 9417 [2022-01-10 10:12:16,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:12:16,658 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 169 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 10:12:16,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 329 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 10:12:16,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9417 states. [2022-01-10 10:12:16,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9417 to 9401. [2022-01-10 10:12:16,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9401 states, 9400 states have (on average 1.2392553191489362) internal successors, (11649), 9400 states have internal predecessors, (11649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:16,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 11649 transitions. [2022-01-10 10:12:16,836 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 11649 transitions. Word has length 219 [2022-01-10 10:12:16,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 10:12:16,836 INFO L470 AbstractCegarLoop]: Abstraction has 9401 states and 11649 transitions. [2022-01-10 10:12:16,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:16,837 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 11649 transitions. [2022-01-10 10:12:16,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-01-10 10:12:16,846 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:12:16,846 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 10:12:16,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 10:12:16,846 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:12:16,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:12:16,847 INFO L85 PathProgramCache]: Analyzing trace with hash -991527345, now seen corresponding path program 1 times [2022-01-10 10:12:16,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:12:16,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570621226] [2022-01-10 10:12:16,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:12:16,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 10:12:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:12:17,056 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 10:12:17,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 10:12:17,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570621226] [2022-01-10 10:12:17,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570621226] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 10:12:17,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 10:12:17,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 10:12:17,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680995216] [2022-01-10 10:12:17,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 10:12:17,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 10:12:17,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 10:12:17,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 10:12:17,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:12:17,058 INFO L87 Difference]: Start difference. First operand 9401 states and 11649 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:18,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 10:12:18,116 INFO L93 Difference]: Finished difference Result 24923 states and 30704 transitions. [2022-01-10 10:12:18,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 10:12:18,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2022-01-10 10:12:18,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 10:12:18,143 INFO L225 Difference]: With dead ends: 24923 [2022-01-10 10:12:18,143 INFO L226 Difference]: Without dead ends: 15524 [2022-01-10 10:12:18,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:12:18,157 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 168 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 10:12:18,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 67 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 10:12:18,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15524 states. [2022-01-10 10:12:18,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15524 to 15522. [2022-01-10 10:12:18,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15522 states, 15521 states have (on average 1.2159654661426456) internal successors, (18873), 15521 states have internal predecessors, (18873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:18,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15522 states to 15522 states and 18873 transitions. [2022-01-10 10:12:18,376 INFO L78 Accepts]: Start accepts. Automaton has 15522 states and 18873 transitions. Word has length 223 [2022-01-10 10:12:18,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 10:12:18,377 INFO L470 AbstractCegarLoop]: Abstraction has 15522 states and 18873 transitions. [2022-01-10 10:12:18,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:18,378 INFO L276 IsEmpty]: Start isEmpty. Operand 15522 states and 18873 transitions. [2022-01-10 10:12:18,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-01-10 10:12:18,389 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:12:18,389 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 10:12:18,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 10:12:18,390 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:12:18,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:12:18,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1065060045, now seen corresponding path program 1 times [2022-01-10 10:12:18,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:12:18,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907597736] [2022-01-10 10:12:18,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:12:18,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 10:12:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:12:18,589 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 10:12:18,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 10:12:18,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907597736] [2022-01-10 10:12:18,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907597736] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 10:12:18,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 10:12:18,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 10:12:18,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445237312] [2022-01-10 10:12:18,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 10:12:18,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 10:12:18,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 10:12:18,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 10:12:18,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:12:18,591 INFO L87 Difference]: Start difference. First operand 15522 states and 18873 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:19,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 10:12:19,647 INFO L93 Difference]: Finished difference Result 38591 states and 47436 transitions. [2022-01-10 10:12:19,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 10:12:19,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 225 [2022-01-10 10:12:19,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 10:12:19,688 INFO L225 Difference]: With dead ends: 38591 [2022-01-10 10:12:19,689 INFO L226 Difference]: Without dead ends: 23071 [2022-01-10 10:12:19,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:12:19,713 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 154 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 10:12:19,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 153 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 10:12:19,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23071 states. [2022-01-10 10:12:19,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23071 to 23041. [2022-01-10 10:12:19,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23041 states, 23040 states have (on average 1.2315104166666666) internal successors, (28374), 23040 states have internal predecessors, (28374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:20,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23041 states to 23041 states and 28374 transitions. [2022-01-10 10:12:20,188 INFO L78 Accepts]: Start accepts. Automaton has 23041 states and 28374 transitions. Word has length 225 [2022-01-10 10:12:20,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 10:12:20,189 INFO L470 AbstractCegarLoop]: Abstraction has 23041 states and 28374 transitions. [2022-01-10 10:12:20,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:20,189 INFO L276 IsEmpty]: Start isEmpty. Operand 23041 states and 28374 transitions. [2022-01-10 10:12:20,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-01-10 10:12:20,203 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:12:20,204 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 10:12:20,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 10:12:20,204 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:12:20,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:12:20,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1637800217, now seen corresponding path program 1 times [2022-01-10 10:12:20,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:12:20,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698243441] [2022-01-10 10:12:20,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:12:20,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 10:12:20,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:12:20,451 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 77 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 10:12:20,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 10:12:20,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698243441] [2022-01-10 10:12:20,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698243441] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 10:12:20,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904321003] [2022-01-10 10:12:20,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:12:20,452 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 10:12:20,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 10:12:20,459 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 10:12:20,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 10:12:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:12:21,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 6995 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 10:12:21,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 10:12:21,756 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 10:12:21,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 10:12:21,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904321003] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 10:12:21,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 10:12:21,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-10 10:12:21,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646184672] [2022-01-10 10:12:21,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 10:12:21,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 10:12:21,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 10:12:21,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 10:12:21,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 10:12:21,759 INFO L87 Difference]: Start difference. First operand 23041 states and 28374 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:22,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 10:12:22,708 INFO L93 Difference]: Finished difference Result 46084 states and 56753 transitions. [2022-01-10 10:12:22,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 10:12:22,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 230 [2022-01-10 10:12:22,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 10:12:22,750 INFO L225 Difference]: With dead ends: 46084 [2022-01-10 10:12:22,750 INFO L226 Difference]: Without dead ends: 23045 [2022-01-10 10:12:22,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 10:12:22,774 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 114 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 10:12:22,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 290 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 10:12:22,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23045 states. [2022-01-10 10:12:23,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23045 to 23041. [2022-01-10 10:12:23,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23041 states, 23040 states have (on average 1.2162326388888889) internal successors, (28022), 23040 states have internal predecessors, (28022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:23,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23041 states to 23041 states and 28022 transitions. [2022-01-10 10:12:23,312 INFO L78 Accepts]: Start accepts. Automaton has 23041 states and 28022 transitions. Word has length 230 [2022-01-10 10:12:23,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 10:12:23,312 INFO L470 AbstractCegarLoop]: Abstraction has 23041 states and 28022 transitions. [2022-01-10 10:12:23,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:23,312 INFO L276 IsEmpty]: Start isEmpty. Operand 23041 states and 28022 transitions. [2022-01-10 10:12:23,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-01-10 10:12:23,331 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:12:23,331 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 10:12:23,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 10:12:23,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-10 10:12:23,548 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:12:23,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:12:23,548 INFO L85 PathProgramCache]: Analyzing trace with hash -7042155, now seen corresponding path program 1 times [2022-01-10 10:12:23,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:12:23,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515231735] [2022-01-10 10:12:23,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:12:23,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 10:12:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:12:23,790 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 10:12:23,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 10:12:23,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515231735] [2022-01-10 10:12:23,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515231735] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 10:12:23,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 10:12:23,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 10:12:23,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255261793] [2022-01-10 10:12:23,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 10:12:23,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 10:12:23,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 10:12:23,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 10:12:23,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:12:23,792 INFO L87 Difference]: Start difference. First operand 23041 states and 28022 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:24,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 10:12:24,956 INFO L93 Difference]: Finished difference Result 55828 states and 67406 transitions. [2022-01-10 10:12:24,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 10:12:24,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 249 [2022-01-10 10:12:24,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 10:12:25,019 INFO L225 Difference]: With dead ends: 55828 [2022-01-10 10:12:25,019 INFO L226 Difference]: Without dead ends: 32789 [2022-01-10 10:12:25,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:12:25,036 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 229 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 10:12:25,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 319 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 10:12:25,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32789 states. [2022-01-10 10:12:25,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32789 to 28725. [2022-01-10 10:12:25,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28725 states, 28724 states have (on average 1.175602283804484) internal successors, (33768), 28724 states have internal predecessors, (33768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:25,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28725 states to 28725 states and 33768 transitions. [2022-01-10 10:12:25,500 INFO L78 Accepts]: Start accepts. Automaton has 28725 states and 33768 transitions. Word has length 249 [2022-01-10 10:12:25,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 10:12:25,500 INFO L470 AbstractCegarLoop]: Abstraction has 28725 states and 33768 transitions. [2022-01-10 10:12:25,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:25,501 INFO L276 IsEmpty]: Start isEmpty. Operand 28725 states and 33768 transitions. [2022-01-10 10:12:25,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-01-10 10:12:25,525 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:12:25,525 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 10:12:25,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 10:12:25,526 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:12:25,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:12:25,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1619677422, now seen corresponding path program 1 times [2022-01-10 10:12:25,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:12:25,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115273665] [2022-01-10 10:12:25,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:12:25,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 10:12:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:12:25,708 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-10 10:12:25,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 10:12:25,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115273665] [2022-01-10 10:12:25,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115273665] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 10:12:25,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 10:12:25,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 10:12:25,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915670162] [2022-01-10 10:12:25,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 10:12:25,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 10:12:25,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 10:12:25,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 10:12:25,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:12:25,711 INFO L87 Difference]: Start difference. First operand 28725 states and 33768 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:26,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 10:12:26,311 INFO L93 Difference]: Finished difference Result 82480 states and 96963 transitions. [2022-01-10 10:12:26,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 10:12:26,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 255 [2022-01-10 10:12:26,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 10:12:26,389 INFO L225 Difference]: With dead ends: 82480 [2022-01-10 10:12:26,389 INFO L226 Difference]: Without dead ends: 53757 [2022-01-10 10:12:26,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:12:26,427 INFO L933 BasicCegarLoop]: 599 mSDtfsCounter, 298 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 10:12:26,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 860 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 10:12:26,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53757 states. [2022-01-10 10:12:27,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53757 to 53754. [2022-01-10 10:12:27,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53754 states, 53753 states have (on average 1.159395754655554) internal successors, (62321), 53753 states have internal predecessors, (62321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:27,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53754 states to 53754 states and 62321 transitions. [2022-01-10 10:12:27,248 INFO L78 Accepts]: Start accepts. Automaton has 53754 states and 62321 transitions. Word has length 255 [2022-01-10 10:12:27,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 10:12:27,249 INFO L470 AbstractCegarLoop]: Abstraction has 53754 states and 62321 transitions. [2022-01-10 10:12:27,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:27,249 INFO L276 IsEmpty]: Start isEmpty. Operand 53754 states and 62321 transitions. [2022-01-10 10:12:27,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-01-10 10:12:27,282 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:12:27,282 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 10:12:27,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 10:12:27,283 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:12:27,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:12:27,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1834314264, now seen corresponding path program 1 times [2022-01-10 10:12:27,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:12:27,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374978805] [2022-01-10 10:12:27,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:12:27,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 10:12:27,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:12:27,467 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-01-10 10:12:27,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 10:12:27,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374978805] [2022-01-10 10:12:27,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374978805] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 10:12:27,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 10:12:27,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 10:12:27,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828268362] [2022-01-10 10:12:27,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 10:12:27,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 10:12:27,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 10:12:27,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 10:12:27,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 10:12:27,469 INFO L87 Difference]: Start difference. First operand 53754 states and 62321 transitions. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:29,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 10:12:29,234 INFO L93 Difference]: Finished difference Result 153352 states and 178003 transitions. [2022-01-10 10:12:29,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 10:12:29,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 261 [2022-01-10 10:12:29,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 10:12:29,371 INFO L225 Difference]: With dead ends: 153352 [2022-01-10 10:12:29,371 INFO L226 Difference]: Without dead ends: 99600 [2022-01-10 10:12:29,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 10:12:29,421 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 525 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 10:12:29,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [525 Valid, 478 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 10:12:29,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99600 states. [2022-01-10 10:12:30,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99600 to 98958. [2022-01-10 10:12:30,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98958 states, 98957 states have (on average 1.1577654941034996) internal successors, (114569), 98957 states have internal predecessors, (114569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:31,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98958 states to 98958 states and 114569 transitions. [2022-01-10 10:12:31,170 INFO L78 Accepts]: Start accepts. Automaton has 98958 states and 114569 transitions. Word has length 261 [2022-01-10 10:12:31,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 10:12:31,170 INFO L470 AbstractCegarLoop]: Abstraction has 98958 states and 114569 transitions. [2022-01-10 10:12:31,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:31,170 INFO L276 IsEmpty]: Start isEmpty. Operand 98958 states and 114569 transitions. [2022-01-10 10:12:31,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-01-10 10:12:31,188 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:12:31,188 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 10:12:31,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 10:12:31,188 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:12:31,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:12:31,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1617618689, now seen corresponding path program 1 times [2022-01-10 10:12:31,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:12:31,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613304084] [2022-01-10 10:12:31,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:12:31,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 10:12:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:12:31,562 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-10 10:12:31,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 10:12:31,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613304084] [2022-01-10 10:12:31,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613304084] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 10:12:31,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 10:12:31,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 10:12:31,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22293060] [2022-01-10 10:12:31,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 10:12:31,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 10:12:31,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 10:12:31,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 10:12:31,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:12:31,565 INFO L87 Difference]: Start difference. First operand 98958 states and 114569 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:33,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 10:12:33,085 INFO L93 Difference]: Finished difference Result 186041 states and 215189 transitions. [2022-01-10 10:12:33,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 10:12:33,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 269 [2022-01-10 10:12:33,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 10:12:33,206 INFO L225 Difference]: With dead ends: 186041 [2022-01-10 10:12:33,206 INFO L226 Difference]: Without dead ends: 87085 [2022-01-10 10:12:33,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 10:12:33,264 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 253 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 10:12:33,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 335 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 10:12:33,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87085 states. [2022-01-10 10:12:34,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87085 to 86269. [2022-01-10 10:12:34,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86269 states, 86268 states have (on average 1.1251680808642834) internal successors, (97066), 86268 states have internal predecessors, (97066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:34,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86269 states to 86269 states and 97066 transitions. [2022-01-10 10:12:34,482 INFO L78 Accepts]: Start accepts. Automaton has 86269 states and 97066 transitions. Word has length 269 [2022-01-10 10:12:34,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 10:12:34,482 INFO L470 AbstractCegarLoop]: Abstraction has 86269 states and 97066 transitions. [2022-01-10 10:12:34,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:34,482 INFO L276 IsEmpty]: Start isEmpty. Operand 86269 states and 97066 transitions. [2022-01-10 10:12:34,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2022-01-10 10:12:34,500 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:12:34,501 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 10:12:34,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 10:12:34,501 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:12:34,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:12:34,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1247192087, now seen corresponding path program 1 times [2022-01-10 10:12:34,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:12:34,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115444437] [2022-01-10 10:12:34,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:12:34,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 10:12:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:12:34,913 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 142 proven. 6 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-01-10 10:12:34,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 10:12:34,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115444437] [2022-01-10 10:12:34,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115444437] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 10:12:34,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471791875] [2022-01-10 10:12:34,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:12:34,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 10:12:34,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 10:12:34,915 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 10:12:34,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 10:12:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:12:35,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 8786 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 10:12:35,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 10:12:36,381 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-01-10 10:12:36,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 10:12:36,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471791875] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 10:12:36,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 10:12:36,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-10 10:12:36,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950582486] [2022-01-10 10:12:36,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 10:12:36,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 10:12:36,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 10:12:36,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 10:12:36,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 10:12:36,383 INFO L87 Difference]: Start difference. First operand 86269 states and 97066 transitions. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:37,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 10:12:37,867 INFO L93 Difference]: Finished difference Result 177009 states and 198791 transitions. [2022-01-10 10:12:37,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 10:12:37,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 289 [2022-01-10 10:12:37,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 10:12:37,971 INFO L225 Difference]: With dead ends: 177009 [2022-01-10 10:12:37,972 INFO L226 Difference]: Without dead ends: 90742 [2022-01-10 10:12:38,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 10:12:38,018 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 411 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 10:12:38,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 151 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 10:12:38,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90742 states. [2022-01-10 10:12:39,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90742 to 90735. [2022-01-10 10:12:39,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90735 states, 90734 states have (on average 1.1136508916172547) internal successors, (101046), 90734 states have internal predecessors, (101046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:39,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90735 states to 90735 states and 101046 transitions. [2022-01-10 10:12:39,368 INFO L78 Accepts]: Start accepts. Automaton has 90735 states and 101046 transitions. Word has length 289 [2022-01-10 10:12:39,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 10:12:39,369 INFO L470 AbstractCegarLoop]: Abstraction has 90735 states and 101046 transitions. [2022-01-10 10:12:39,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:39,369 INFO L276 IsEmpty]: Start isEmpty. Operand 90735 states and 101046 transitions. [2022-01-10 10:12:39,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-01-10 10:12:39,389 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:12:39,391 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 10:12:39,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 10:12:39,605 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,SelfDestructingSolverStorable14 [2022-01-10 10:12:39,606 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:12:39,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:12:39,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1285734047, now seen corresponding path program 1 times [2022-01-10 10:12:39,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:12:39,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827852441] [2022-01-10 10:12:39,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:12:39,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 10:12:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:12:40,089 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 10:12:40,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 10:12:40,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827852441] [2022-01-10 10:12:40,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827852441] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 10:12:40,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 10:12:40,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 10:12:40,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841807852] [2022-01-10 10:12:40,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 10:12:40,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 10:12:40,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 10:12:40,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 10:12:40,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 10:12:40,091 INFO L87 Difference]: Start difference. First operand 90735 states and 101046 transitions. Second operand has 4 states, 4 states have (on average 76.25) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:41,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 10:12:41,709 INFO L93 Difference]: Finished difference Result 187219 states and 208628 transitions. [2022-01-10 10:12:41,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 10:12:41,709 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.25) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 305 [2022-01-10 10:12:41,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 10:12:41,807 INFO L225 Difference]: With dead ends: 187219 [2022-01-10 10:12:41,807 INFO L226 Difference]: Without dead ends: 96486 [2022-01-10 10:12:41,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 10:12:41,860 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 417 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 10:12:41,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 83 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 10:12:42,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96486 states. [2022-01-10 10:12:43,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96486 to 94389. [2022-01-10 10:12:43,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94389 states, 94388 states have (on average 1.097692503284316) internal successors, (103609), 94388 states have internal predecessors, (103609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:43,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94389 states to 94389 states and 103609 transitions. [2022-01-10 10:12:43,268 INFO L78 Accepts]: Start accepts. Automaton has 94389 states and 103609 transitions. Word has length 305 [2022-01-10 10:12:43,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 10:12:43,269 INFO L470 AbstractCegarLoop]: Abstraction has 94389 states and 103609 transitions. [2022-01-10 10:12:43,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.25) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:43,269 INFO L276 IsEmpty]: Start isEmpty. Operand 94389 states and 103609 transitions. [2022-01-10 10:12:43,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2022-01-10 10:12:43,290 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:12:43,290 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 10:12:43,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 10:12:43,291 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:12:43,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:12:43,291 INFO L85 PathProgramCache]: Analyzing trace with hash -607829905, now seen corresponding path program 1 times [2022-01-10 10:12:43,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:12:43,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496256712] [2022-01-10 10:12:43,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:12:43,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 10:12:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:12:43,642 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-01-10 10:12:43,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 10:12:43,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496256712] [2022-01-10 10:12:43,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496256712] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 10:12:43,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 10:12:43,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 10:12:43,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527573514] [2022-01-10 10:12:43,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 10:12:43,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 10:12:43,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 10:12:43,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 10:12:43,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 10:12:43,645 INFO L87 Difference]: Start difference. First operand 94389 states and 103609 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:46,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 10:12:46,190 INFO L93 Difference]: Finished difference Result 340498 states and 373958 transitions. [2022-01-10 10:12:46,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 10:12:46,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 311 [2022-01-10 10:12:46,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 10:12:46,549 INFO L225 Difference]: With dead ends: 340498 [2022-01-10 10:12:46,549 INFO L226 Difference]: Without dead ends: 246111 [2022-01-10 10:12:46,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 10:12:46,633 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 555 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 10:12:46,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [555 Valid, 82 Invalid, 1351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 10:12:46,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246111 states. [2022-01-10 10:12:49,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246111 to 233513. [2022-01-10 10:12:49,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233513 states, 233512 states have (on average 1.100769981842475) internal successors, (257043), 233512 states have internal predecessors, (257043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:50,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233513 states to 233513 states and 257043 transitions. [2022-01-10 10:12:50,195 INFO L78 Accepts]: Start accepts. Automaton has 233513 states and 257043 transitions. Word has length 311 [2022-01-10 10:12:50,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 10:12:50,195 INFO L470 AbstractCegarLoop]: Abstraction has 233513 states and 257043 transitions. [2022-01-10 10:12:50,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:50,195 INFO L276 IsEmpty]: Start isEmpty. Operand 233513 states and 257043 transitions. [2022-01-10 10:12:50,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-01-10 10:12:50,210 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 10:12:50,210 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 10:12:50,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 10:12:50,210 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 10:12:50,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 10:12:50,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1176732952, now seen corresponding path program 1 times [2022-01-10 10:12:50,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 10:12:50,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316887218] [2022-01-10 10:12:50,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 10:12:50,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 10:12:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 10:12:50,647 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2022-01-10 10:12:50,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 10:12:50,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316887218] [2022-01-10 10:12:50,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316887218] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 10:12:50,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 10:12:50,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 10:12:50,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597975687] [2022-01-10 10:12:50,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 10:12:50,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 10:12:50,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 10:12:50,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 10:12:50,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 10:12:50,649 INFO L87 Difference]: Start difference. First operand 233513 states and 257043 transitions. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 10:12:53,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 10:12:53,070 INFO L93 Difference]: Finished difference Result 484493 states and 533485 transitions. [2022-01-10 10:12:53,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 10:12:53,071 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 317 [2022-01-10 10:12:53,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 10:12:53,465 INFO L225 Difference]: With dead ends: 484493 [2022-01-10 10:12:53,465 INFO L226 Difference]: Without dead ends: 250982 [2022-01-10 10:12:53,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 10:12:53,912 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 745 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 10:12:53,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [745 Valid, 317 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 10:12:54,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250982 states.