/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 02:33:47,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 02:33:47,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 02:33:47,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 02:33:47,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 02:33:47,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 02:33:47,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 02:33:47,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 02:33:47,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 02:33:47,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 02:33:47,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 02:33:47,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 02:33:47,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 02:33:47,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 02:33:47,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 02:33:47,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 02:33:47,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 02:33:47,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 02:33:47,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 02:33:47,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 02:33:47,580 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 02:33:47,599 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 02:33:47,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 02:33:47,599 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 02:33:47,599 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 02:33:47,600 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 02:33:47,600 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 02:33:47,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 02:33:47,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 02:33:47,600 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 02:33:47,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 02:33:47,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 02:33:47,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 02:33:47,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 02:33:47,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 02:33:47,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 02:33:47,601 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 02:33:47,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 02:33:47,601 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 02:33:47,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 02:33:47,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 02:33:47,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 02:33:47,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:33:47,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 02:33:47,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 02:33:47,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 02:33:47,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 02:33:47,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 02:33:47,602 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 02:33:47,602 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 02:33:47,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 02:33:47,602 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 02:33:47,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 02:33:47,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 02:33:47,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 02:33:47,841 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 02:33:47,841 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 02:33:47,843 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c [2022-01-10 02:33:47,897 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04192b49c/45db42e074fa4445a9a48bd83f3f02f7/FLAGf6bc13518 [2022-01-10 02:33:48,266 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 02:33:48,266 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c [2022-01-10 02:33:48,278 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04192b49c/45db42e074fa4445a9a48bd83f3f02f7/FLAGf6bc13518 [2022-01-10 02:33:48,287 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04192b49c/45db42e074fa4445a9a48bd83f3f02f7 [2022-01-10 02:33:48,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 02:33:48,290 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 02:33:48,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 02:33:48,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 02:33:48,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 02:33:48,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:33:48" (1/1) ... [2022-01-10 02:33:48,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76c71dca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:48, skipping insertion in model container [2022-01-10 02:33:48,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:33:48" (1/1) ... [2022-01-10 02:33:48,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 02:33:48,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 02:33:48,498 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c[914,927] [2022-01-10 02:33:48,586 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c[7115,7128] [2022-01-10 02:33:48,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:33:48,685 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 02:33:48,692 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c[914,927] [2022-01-10 02:33:48,703 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c[7115,7128] [2022-01-10 02:33:48,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:33:48,735 INFO L208 MainTranslator]: Completed translation [2022-01-10 02:33:48,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:48 WrapperNode [2022-01-10 02:33:48,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 02:33:48,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 02:33:48,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 02:33:48,737 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 02:33:48,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:48" (1/1) ... [2022-01-10 02:33:48,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:48" (1/1) ... [2022-01-10 02:33:48,781 INFO L137 Inliner]: procedures = 61, calls = 69, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 576 [2022-01-10 02:33:48,781 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 02:33:48,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 02:33:48,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 02:33:48,782 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 02:33:48,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:48" (1/1) ... [2022-01-10 02:33:48,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:48" (1/1) ... [2022-01-10 02:33:48,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:48" (1/1) ... [2022-01-10 02:33:48,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:48" (1/1) ... [2022-01-10 02:33:48,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:48" (1/1) ... [2022-01-10 02:33:48,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:48" (1/1) ... [2022-01-10 02:33:48,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:48" (1/1) ... [2022-01-10 02:33:48,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 02:33:48,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 02:33:48,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 02:33:48,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 02:33:48,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:48" (1/1) ... [2022-01-10 02:33:48,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:33:48,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:33:48,857 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 02:33:48,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 02:33:48,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 02:33:48,894 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 02:33:48,894 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 02:33:48,894 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-01-10 02:33:48,894 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-01-10 02:33:48,894 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-01-10 02:33:48,894 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-01-10 02:33:48,894 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-01-10 02:33:48,894 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-01-10 02:33:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-01-10 02:33:48,895 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-01-10 02:33:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-01-10 02:33:48,895 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-01-10 02:33:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-01-10 02:33:48,895 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-01-10 02:33:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-01-10 02:33:48,895 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-01-10 02:33:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-01-10 02:33:48,895 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-01-10 02:33:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-01-10 02:33:48,895 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-01-10 02:33:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-01-10 02:33:48,896 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-01-10 02:33:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 02:33:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-01-10 02:33:48,896 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-01-10 02:33:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-01-10 02:33:48,896 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-01-10 02:33:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 02:33:48,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 02:33:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-01-10 02:33:48,896 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-01-10 02:33:48,962 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 02:33:48,963 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 02:33:49,324 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 02:33:49,332 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 02:33:49,332 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-01-10 02:33:49,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:33:49 BoogieIcfgContainer [2022-01-10 02:33:49,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 02:33:49,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 02:33:49,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 02:33:49,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 02:33:49,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:33:48" (1/3) ... [2022-01-10 02:33:49,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aec204c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:33:49, skipping insertion in model container [2022-01-10 02:33:49,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:33:48" (2/3) ... [2022-01-10 02:33:49,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aec204c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:33:49, skipping insertion in model container [2022-01-10 02:33:49,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:33:49" (3/3) ... [2022-01-10 02:33:49,340 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.04.cil-1.c [2022-01-10 02:33:49,343 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 02:33:49,343 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 02:33:49,384 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 02:33:49,388 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 02:33:49,388 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 02:33:49,402 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 234 states have (on average 1.5854700854700854) internal successors, (371), 240 states have internal predecessors, (371), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2022-01-10 02:33:49,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:33:49,409 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:49,409 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] [2022-01-10 02:33:49,410 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:49,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:49,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1541344950, now seen corresponding path program 1 times [2022-01-10 02:33:49,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:49,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045447157] [2022-01-10 02:33:49,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:49,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:49,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:49,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:33:49,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:49,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:33:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:49,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:33:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:49,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:33:49,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:49,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:33:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:49,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:33:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:49,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:33:49,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:49,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045447157] [2022-01-10 02:33:49,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045447157] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:49,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:49,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 02:33:49,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609764991] [2022-01-10 02:33:49,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:49,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:33:49,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:49,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:33:49,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:33:49,772 INFO L87 Difference]: Start difference. First operand has 283 states, 234 states have (on average 1.5854700854700854) internal successors, (371), 240 states have internal predecessors, (371), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:33:50,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:50,609 INFO L93 Difference]: Finished difference Result 712 states and 1090 transitions. [2022-01-10 02:33:50,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 02:33:50,611 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-01-10 02:33:50,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:50,622 INFO L225 Difference]: With dead ends: 712 [2022-01-10 02:33:50,622 INFO L226 Difference]: Without dead ends: 439 [2022-01-10 02:33:50,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-01-10 02:33:50,637 INFO L933 BasicCegarLoop]: 456 mSDtfsCounter, 863 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:50,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [887 Valid, 1678 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 02:33:50,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-01-10 02:33:50,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 373. [2022-01-10 02:33:50,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 305 states have (on average 1.4721311475409835) internal successors, (449), 312 states have internal predecessors, (449), 43 states have call successors, (43), 21 states have call predecessors, (43), 23 states have return successors, (52), 42 states have call predecessors, (52), 41 states have call successors, (52) [2022-01-10 02:33:50,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 544 transitions. [2022-01-10 02:33:50,696 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 544 transitions. Word has length 65 [2022-01-10 02:33:50,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:50,697 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 544 transitions. [2022-01-10 02:33:50,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:33:50,697 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 544 transitions. [2022-01-10 02:33:50,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:33:50,701 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:50,701 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] [2022-01-10 02:33:50,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 02:33:50,702 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:50,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:50,702 INFO L85 PathProgramCache]: Analyzing trace with hash -487241160, now seen corresponding path program 1 times [2022-01-10 02:33:50,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:50,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251793028] [2022-01-10 02:33:50,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:50,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:50,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:50,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:50,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:33:50,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:50,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:33:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:50,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:33:50,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:50,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:33:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:50,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:33:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:50,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:33:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:50,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:33:50,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:50,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251793028] [2022-01-10 02:33:50,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251793028] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:50,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:50,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 02:33:50,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870419788] [2022-01-10 02:33:50,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:50,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 02:33:50,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:50,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 02:33:50,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-10 02:33:50,823 INFO L87 Difference]: Start difference. First operand 373 states and 544 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-01-10 02:33:52,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:52,196 INFO L93 Difference]: Finished difference Result 1320 states and 1873 transitions. [2022-01-10 02:33:52,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-10 02:33:52,197 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2022-01-10 02:33:52,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:52,206 INFO L225 Difference]: With dead ends: 1320 [2022-01-10 02:33:52,207 INFO L226 Difference]: Without dead ends: 1127 [2022-01-10 02:33:52,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-01-10 02:33:52,213 INFO L933 BasicCegarLoop]: 511 mSDtfsCounter, 2184 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 516 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2198 SdHoareTripleChecker+Valid, 1922 SdHoareTripleChecker+Invalid, 2066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 516 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:52,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2198 Valid, 1922 Invalid, 2066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [516 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 02:33:52,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-01-10 02:33:52,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1027. [2022-01-10 02:33:52,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 821 states have (on average 1.405602923264312) internal successors, (1154), 841 states have internal predecessors, (1154), 110 states have call successors, (110), 81 states have call predecessors, (110), 94 states have return successors, (141), 107 states have call predecessors, (141), 108 states have call successors, (141) [2022-01-10 02:33:52,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1405 transitions. [2022-01-10 02:33:52,294 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1405 transitions. Word has length 65 [2022-01-10 02:33:52,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:52,295 INFO L470 AbstractCegarLoop]: Abstraction has 1027 states and 1405 transitions. [2022-01-10 02:33:52,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-01-10 02:33:52,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1405 transitions. [2022-01-10 02:33:52,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:33:52,297 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:52,297 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] [2022-01-10 02:33:52,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 02:33:52,297 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:52,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:52,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1762343849, now seen corresponding path program 1 times [2022-01-10 02:33:52,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:52,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104118737] [2022-01-10 02:33:52,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:52,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:52,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:52,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:33:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:52,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:33:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:52,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:33:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:52,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:33:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:52,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:33:52,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:52,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:33:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:52,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:33:52,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:52,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104118737] [2022-01-10 02:33:52,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104118737] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:52,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:52,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 02:33:52,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714724537] [2022-01-10 02:33:52,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:52,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 02:33:52,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:52,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 02:33:52,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:33:52,437 INFO L87 Difference]: Start difference. First operand 1027 states and 1405 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 02:33:53,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:53,013 INFO L93 Difference]: Finished difference Result 1937 states and 2621 transitions. [2022-01-10 02:33:53,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 02:33:53,013 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-01-10 02:33:53,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:53,019 INFO L225 Difference]: With dead ends: 1937 [2022-01-10 02:33:53,020 INFO L226 Difference]: Without dead ends: 1097 [2022-01-10 02:33:53,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:33:53,026 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 487 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1559 SdHoareTripleChecker+Invalid, 1076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:53,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [488 Valid, 1559 Invalid, 1076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 02:33:53,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2022-01-10 02:33:53,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1047. [2022-01-10 02:33:53,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 837 states have (on average 1.3906810035842294) internal successors, (1164), 857 states have internal predecessors, (1164), 110 states have call successors, (110), 81 states have call predecessors, (110), 98 states have return successors, (145), 111 states have call predecessors, (145), 108 states have call successors, (145) [2022-01-10 02:33:53,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1419 transitions. [2022-01-10 02:33:53,094 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1419 transitions. Word has length 65 [2022-01-10 02:33:53,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:53,096 INFO L470 AbstractCegarLoop]: Abstraction has 1047 states and 1419 transitions. [2022-01-10 02:33:53,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 02:33:53,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1419 transitions. [2022-01-10 02:33:53,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:33:53,102 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:53,102 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] [2022-01-10 02:33:53,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 02:33:53,102 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:53,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:53,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1503264149, now seen corresponding path program 1 times [2022-01-10 02:33:53,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:53,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703291542] [2022-01-10 02:33:53,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:53,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:53,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:53,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:53,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:33:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:53,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:33:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:53,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:33:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:53,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:33:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:53,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:33:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:53,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:33:53,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:53,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:33:53,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:53,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703291542] [2022-01-10 02:33:53,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703291542] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:53,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:53,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 02:33:53,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131553281] [2022-01-10 02:33:53,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:53,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 02:33:53,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:53,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 02:33:53,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:33:53,243 INFO L87 Difference]: Start difference. First operand 1047 states and 1419 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 02:33:53,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:53,831 INFO L93 Difference]: Finished difference Result 2015 states and 2701 transitions. [2022-01-10 02:33:53,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 02:33:53,832 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-01-10 02:33:53,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:53,837 INFO L225 Difference]: With dead ends: 2015 [2022-01-10 02:33:53,837 INFO L226 Difference]: Without dead ends: 1155 [2022-01-10 02:33:53,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:33:53,839 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 329 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 1730 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:53,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 1730 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 02:33:53,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-01-10 02:33:53,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1097. [2022-01-10 02:33:53,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1097 states, 877 states have (on average 1.3728620296465222) internal successors, (1204), 897 states have internal predecessors, (1204), 110 states have call successors, (110), 81 states have call predecessors, (110), 108 states have return successors, (155), 121 states have call predecessors, (155), 108 states have call successors, (155) [2022-01-10 02:33:53,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1469 transitions. [2022-01-10 02:33:53,879 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1469 transitions. Word has length 65 [2022-01-10 02:33:53,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:53,879 INFO L470 AbstractCegarLoop]: Abstraction has 1097 states and 1469 transitions. [2022-01-10 02:33:53,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 02:33:53,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1469 transitions. [2022-01-10 02:33:53,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:33:53,880 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:53,881 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] [2022-01-10 02:33:53,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 02:33:53,881 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:53,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:53,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1405499753, now seen corresponding path program 1 times [2022-01-10 02:33:53,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:53,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562004822] [2022-01-10 02:33:53,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:53,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:53,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:53,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:33:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:53,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:33:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:53,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:33:53,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:53,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:33:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:53,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:33:53,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:53,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:33:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:53,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:33:53,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:53,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562004822] [2022-01-10 02:33:53,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562004822] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:53,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:53,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 02:33:53,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368098097] [2022-01-10 02:33:53,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:53,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:33:53,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:53,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:33:53,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:33:53,970 INFO L87 Difference]: Start difference. First operand 1097 states and 1469 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:33:54,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:54,494 INFO L93 Difference]: Finished difference Result 2234 states and 2952 transitions. [2022-01-10 02:33:54,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 02:33:54,495 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-01-10 02:33:54,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:54,500 INFO L225 Difference]: With dead ends: 2234 [2022-01-10 02:33:54,500 INFO L226 Difference]: Without dead ends: 1562 [2022-01-10 02:33:54,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-01-10 02:33:54,502 INFO L933 BasicCegarLoop]: 414 mSDtfsCounter, 571 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:54,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [575 Valid, 1325 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 02:33:54,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2022-01-10 02:33:54,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1434. [2022-01-10 02:33:54,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1434 states, 1148 states have (on average 1.343205574912892) internal successors, (1542), 1171 states have internal predecessors, (1542), 142 states have call successors, (142), 111 states have call predecessors, (142), 142 states have return successors, (192), 154 states have call predecessors, (192), 140 states have call successors, (192) [2022-01-10 02:33:54,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 1876 transitions. [2022-01-10 02:33:54,548 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 1876 transitions. Word has length 65 [2022-01-10 02:33:54,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:54,549 INFO L470 AbstractCegarLoop]: Abstraction has 1434 states and 1876 transitions. [2022-01-10 02:33:54,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:33:54,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 1876 transitions. [2022-01-10 02:33:54,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:33:54,549 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:54,550 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] [2022-01-10 02:33:54,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 02:33:54,550 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:54,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:54,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1264951143, now seen corresponding path program 1 times [2022-01-10 02:33:54,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:54,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6654219] [2022-01-10 02:33:54,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:54,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:54,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:54,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:54,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:33:54,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:54,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:33:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:54,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:33:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:54,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:33:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:54,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:33:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:54,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:33:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:54,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:33:54,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:54,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6654219] [2022-01-10 02:33:54,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6654219] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:54,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:54,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 02:33:54,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761286589] [2022-01-10 02:33:54,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:54,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:33:54,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:54,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:33:54,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:33:54,630 INFO L87 Difference]: Start difference. First operand 1434 states and 1876 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:33:55,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:55,279 INFO L93 Difference]: Finished difference Result 2510 states and 3239 transitions. [2022-01-10 02:33:55,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 02:33:55,280 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-01-10 02:33:55,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:55,285 INFO L225 Difference]: With dead ends: 2510 [2022-01-10 02:33:55,285 INFO L226 Difference]: Without dead ends: 1501 [2022-01-10 02:33:55,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-01-10 02:33:55,287 INFO L933 BasicCegarLoop]: 399 mSDtfsCounter, 983 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1006 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:55,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1006 Valid, 1172 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 02:33:55,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2022-01-10 02:33:55,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 1341. [2022-01-10 02:33:55,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1341 states, 1078 states have (on average 1.342300556586271) internal successors, (1447), 1096 states have internal predecessors, (1447), 134 states have call successors, (134), 104 states have call predecessors, (134), 127 states have return successors, (170), 142 states have call predecessors, (170), 132 states have call successors, (170) [2022-01-10 02:33:55,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1751 transitions. [2022-01-10 02:33:55,330 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1751 transitions. Word has length 65 [2022-01-10 02:33:55,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:55,330 INFO L470 AbstractCegarLoop]: Abstraction has 1341 states and 1751 transitions. [2022-01-10 02:33:55,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:33:55,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1751 transitions. [2022-01-10 02:33:55,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:33:55,331 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:55,331 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] [2022-01-10 02:33:55,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 02:33:55,332 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:55,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:55,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1398964649, now seen corresponding path program 1 times [2022-01-10 02:33:55,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:55,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584839686] [2022-01-10 02:33:55,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:55,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:55,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:55,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:55,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:33:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:55,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:33:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:55,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:33:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:55,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:33:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:55,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:33:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:55,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:33:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:55,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:33:55,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:55,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584839686] [2022-01-10 02:33:55,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584839686] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:55,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:55,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:33:55,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342550933] [2022-01-10 02:33:55,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:55,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:33:55,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:55,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:33:55,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:33:55,391 INFO L87 Difference]: Start difference. First operand 1341 states and 1751 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:33:55,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:55,760 INFO L93 Difference]: Finished difference Result 3720 states and 4793 transitions. [2022-01-10 02:33:55,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 02:33:55,760 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-01-10 02:33:55,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:55,790 INFO L225 Difference]: With dead ends: 3720 [2022-01-10 02:33:55,790 INFO L226 Difference]: Without dead ends: 2566 [2022-01-10 02:33:55,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-01-10 02:33:55,792 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 957 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:55,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [982 Valid, 945 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 02:33:55,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2022-01-10 02:33:55,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 2426. [2022-01-10 02:33:55,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2426 states, 1925 states have (on average 1.3012987012987014) internal successors, (2505), 1958 states have internal predecessors, (2505), 249 states have call successors, (249), 201 states have call predecessors, (249), 250 states have return successors, (356), 269 states have call predecessors, (356), 247 states have call successors, (356) [2022-01-10 02:33:55,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2426 states to 2426 states and 3110 transitions. [2022-01-10 02:33:55,869 INFO L78 Accepts]: Start accepts. Automaton has 2426 states and 3110 transitions. Word has length 65 [2022-01-10 02:33:55,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:55,870 INFO L470 AbstractCegarLoop]: Abstraction has 2426 states and 3110 transitions. [2022-01-10 02:33:55,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:33:55,870 INFO L276 IsEmpty]: Start isEmpty. Operand 2426 states and 3110 transitions. [2022-01-10 02:33:55,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 02:33:55,871 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:55,871 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] [2022-01-10 02:33:55,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 02:33:55,871 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:55,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:55,872 INFO L85 PathProgramCache]: Analyzing trace with hash 264887933, now seen corresponding path program 1 times [2022-01-10 02:33:55,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:55,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823168331] [2022-01-10 02:33:55,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:55,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:55,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:55,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:55,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:33:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:55,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:33:55,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:55,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:33:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:55,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:33:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:55,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:33:55,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:55,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:33:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:55,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:33:55,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:55,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823168331] [2022-01-10 02:33:55,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823168331] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:55,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:55,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:33:55,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844599961] [2022-01-10 02:33:55,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:55,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:33:55,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:55,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:33:55,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:33:55,925 INFO L87 Difference]: Start difference. First operand 2426 states and 3110 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 02:33:56,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:56,359 INFO L93 Difference]: Finished difference Result 5570 states and 7140 transitions. [2022-01-10 02:33:56,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 02:33:56,359 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-01-10 02:33:56,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:56,371 INFO L225 Difference]: With dead ends: 5570 [2022-01-10 02:33:56,372 INFO L226 Difference]: Without dead ends: 3479 [2022-01-10 02:33:56,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:33:56,377 INFO L933 BasicCegarLoop]: 395 mSDtfsCounter, 500 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:56,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 1093 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 02:33:56,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3479 states. [2022-01-10 02:33:56,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3479 to 3223. [2022-01-10 02:33:56,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3223 states, 2548 states have (on average 1.2880690737833596) internal successors, (3282), 2577 states have internal predecessors, (3282), 339 states have call successors, (339), 279 states have call predecessors, (339), 334 states have return successors, (473), 369 states have call predecessors, (473), 337 states have call successors, (473) [2022-01-10 02:33:56,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3223 states to 3223 states and 4094 transitions. [2022-01-10 02:33:56,507 INFO L78 Accepts]: Start accepts. Automaton has 3223 states and 4094 transitions. Word has length 66 [2022-01-10 02:33:56,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:56,507 INFO L470 AbstractCegarLoop]: Abstraction has 3223 states and 4094 transitions. [2022-01-10 02:33:56,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 02:33:56,507 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states and 4094 transitions. [2022-01-10 02:33:56,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 02:33:56,508 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:56,508 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] [2022-01-10 02:33:56,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 02:33:56,508 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:56,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:56,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1723127592, now seen corresponding path program 1 times [2022-01-10 02:33:56,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:56,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738859658] [2022-01-10 02:33:56,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:56,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:56,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:56,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:33:56,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:56,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:33:56,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:56,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:33:56,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:56,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:33:56,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:56,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:33:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:56,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:33:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:56,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:33:56,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:56,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738859658] [2022-01-10 02:33:56,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738859658] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:56,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:56,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:33:56,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817251499] [2022-01-10 02:33:56,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:56,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:33:56,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:56,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:33:56,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:33:56,562 INFO L87 Difference]: Start difference. First operand 3223 states and 4094 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 02:33:56,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:56,931 INFO L93 Difference]: Finished difference Result 7713 states and 9720 transitions. [2022-01-10 02:33:56,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 02:33:56,932 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-01-10 02:33:56,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:56,946 INFO L225 Difference]: With dead ends: 7713 [2022-01-10 02:33:56,946 INFO L226 Difference]: Without dead ends: 4680 [2022-01-10 02:33:56,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-10 02:33:56,953 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 953 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:56,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [980 Valid, 781 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 02:33:56,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4680 states. [2022-01-10 02:33:57,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4680 to 4312. [2022-01-10 02:33:57,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4312 states, 3387 states have (on average 1.2669028638913493) internal successors, (4291), 3432 states have internal predecessors, (4291), 465 states have call successors, (465), 389 states have call predecessors, (465), 458 states have return successors, (642), 493 states have call predecessors, (642), 463 states have call successors, (642) [2022-01-10 02:33:57,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4312 states to 4312 states and 5398 transitions. [2022-01-10 02:33:57,103 INFO L78 Accepts]: Start accepts. Automaton has 4312 states and 5398 transitions. Word has length 66 [2022-01-10 02:33:57,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:57,104 INFO L470 AbstractCegarLoop]: Abstraction has 4312 states and 5398 transitions. [2022-01-10 02:33:57,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 02:33:57,104 INFO L276 IsEmpty]: Start isEmpty. Operand 4312 states and 5398 transitions. [2022-01-10 02:33:57,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 02:33:57,105 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:57,106 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 02:33:57,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 02:33:57,106 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:57,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:57,106 INFO L85 PathProgramCache]: Analyzing trace with hash -792696971, now seen corresponding path program 1 times [2022-01-10 02:33:57,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:57,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592691217] [2022-01-10 02:33:57,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:57,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:57,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:57,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:57,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:33:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:57,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:33:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:57,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:33:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:57,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:33:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:57,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:33:57,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:57,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:33:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:57,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:33:57,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:57,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592691217] [2022-01-10 02:33:57,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592691217] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:33:57,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:33:57,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:33:57,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591379534] [2022-01-10 02:33:57,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:33:57,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:33:57,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:57,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:33:57,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:33:57,178 INFO L87 Difference]: Start difference. First operand 4312 states and 5398 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 02:33:57,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:33:57,611 INFO L93 Difference]: Finished difference Result 5057 states and 6301 transitions. [2022-01-10 02:33:57,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 02:33:57,611 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-01-10 02:33:57,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:33:57,627 INFO L225 Difference]: With dead ends: 5057 [2022-01-10 02:33:57,627 INFO L226 Difference]: Without dead ends: 5054 [2022-01-10 02:33:57,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-01-10 02:33:57,629 INFO L933 BasicCegarLoop]: 400 mSDtfsCounter, 1304 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:33:57,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1314 Valid, 789 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 02:33:57,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5054 states. [2022-01-10 02:33:57,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5054 to 4437. [2022-01-10 02:33:57,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4437 states, 3497 states have (on average 1.2670860737775236) internal successors, (4431), 3543 states have internal predecessors, (4431), 472 states have call successors, (472), 397 states have call predecessors, (472), 466 states have return successors, (653), 499 states have call predecessors, (653), 471 states have call successors, (653) [2022-01-10 02:33:57,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4437 states to 4437 states and 5556 transitions. [2022-01-10 02:33:57,821 INFO L78 Accepts]: Start accepts. Automaton has 4437 states and 5556 transitions. Word has length 73 [2022-01-10 02:33:57,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:33:57,821 INFO L470 AbstractCegarLoop]: Abstraction has 4437 states and 5556 transitions. [2022-01-10 02:33:57,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 02:33:57,821 INFO L276 IsEmpty]: Start isEmpty. Operand 4437 states and 5556 transitions. [2022-01-10 02:33:57,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 02:33:57,822 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:33:57,822 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 02:33:57,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 02:33:57,823 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:33:57,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:33:57,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1195350886, now seen corresponding path program 1 times [2022-01-10 02:33:57,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:33:57,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995181371] [2022-01-10 02:33:57,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:57,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:33:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:57,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:33:57,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:57,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:33:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:57,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:33:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:57,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:33:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:57,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:33:57,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:57,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:33:57,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:57,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:33:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:57,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:33:57,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:33:57,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995181371] [2022-01-10 02:33:57,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995181371] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:33:57,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273213743] [2022-01-10 02:33:57,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:33:57,927 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:33:57,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:33:57,939 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 02:33:57,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 02:33:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:33:58,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 02:33:58,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:33:58,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:33:58,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:33:58,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:33:58,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273213743] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 02:33:58,587 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 02:33:58,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-01-10 02:33:58,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484578302] [2022-01-10 02:33:58,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 02:33:58,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 02:33:58,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:33:58,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 02:33:58,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-10 02:33:58,588 INFO L87 Difference]: Start difference. First operand 4437 states and 5556 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-01-10 02:34:00,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:00,060 INFO L93 Difference]: Finished difference Result 9615 states and 11886 transitions. [2022-01-10 02:34:00,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 02:34:00,060 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-01-10 02:34:00,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:00,094 INFO L225 Difference]: With dead ends: 9615 [2022-01-10 02:34:00,095 INFO L226 Difference]: Without dead ends: 9612 [2022-01-10 02:34:00,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2022-01-10 02:34:00,098 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 1141 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 1804 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 2046 SdHoareTripleChecker+Invalid, 1983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:00,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1192 Valid, 2046 Invalid, 1983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1804 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 02:34:00,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9612 states. [2022-01-10 02:34:00,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9612 to 7843. [2022-01-10 02:34:00,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7843 states, 6163 states have (on average 1.2588025312347884) internal successors, (7758), 6244 states have internal predecessors, (7758), 834 states have call successors, (834), 711 states have call predecessors, (834), 844 states have return successors, (1164), 890 states have call predecessors, (1164), 833 states have call successors, (1164) [2022-01-10 02:34:00,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7843 states to 7843 states and 9756 transitions. [2022-01-10 02:34:00,417 INFO L78 Accepts]: Start accepts. Automaton has 7843 states and 9756 transitions. Word has length 74 [2022-01-10 02:34:00,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:00,418 INFO L470 AbstractCegarLoop]: Abstraction has 7843 states and 9756 transitions. [2022-01-10 02:34:00,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-01-10 02:34:00,418 INFO L276 IsEmpty]: Start isEmpty. Operand 7843 states and 9756 transitions. [2022-01-10 02:34:00,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 02:34:00,419 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:00,419 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 02:34:00,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 02:34:00,636 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,SelfDestructingSolverStorable10 [2022-01-10 02:34:00,636 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:00,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:00,637 INFO L85 PathProgramCache]: Analyzing trace with hash 85235253, now seen corresponding path program 2 times [2022-01-10 02:34:00,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:00,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095828794] [2022-01-10 02:34:00,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:00,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:00,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:00,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:00,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:00,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:00,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:00,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:00,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:00,695 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 02:34:00,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:00,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095828794] [2022-01-10 02:34:00,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095828794] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:00,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:00,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:34:00,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035863856] [2022-01-10 02:34:00,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:00,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:34:00,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:00,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:34:00,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:34:00,696 INFO L87 Difference]: Start difference. First operand 7843 states and 9756 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 02:34:01,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:01,150 INFO L93 Difference]: Finished difference Result 9703 states and 12135 transitions. [2022-01-10 02:34:01,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 02:34:01,150 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-01-10 02:34:01,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:01,167 INFO L225 Difference]: With dead ends: 9703 [2022-01-10 02:34:01,167 INFO L226 Difference]: Without dead ends: 3955 [2022-01-10 02:34:01,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-10 02:34:01,178 INFO L933 BasicCegarLoop]: 435 mSDtfsCounter, 665 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:01,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [693 Valid, 1066 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 02:34:01,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2022-01-10 02:34:01,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3485. [2022-01-10 02:34:01,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3485 states, 2737 states have (on average 1.247716477895506) internal successors, (3415), 2771 states have internal predecessors, (3415), 376 states have call successors, (376), 313 states have call predecessors, (376), 370 states have return successors, (494), 403 states have call predecessors, (494), 375 states have call successors, (494) [2022-01-10 02:34:01,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3485 states to 3485 states and 4285 transitions. [2022-01-10 02:34:01,320 INFO L78 Accepts]: Start accepts. Automaton has 3485 states and 4285 transitions. Word has length 77 [2022-01-10 02:34:01,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:01,320 INFO L470 AbstractCegarLoop]: Abstraction has 3485 states and 4285 transitions. [2022-01-10 02:34:01,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 02:34:01,320 INFO L276 IsEmpty]: Start isEmpty. Operand 3485 states and 4285 transitions. [2022-01-10 02:34:01,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 02:34:01,321 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:01,321 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] [2022-01-10 02:34:01,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 02:34:01,321 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:01,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:01,321 INFO L85 PathProgramCache]: Analyzing trace with hash -494782792, now seen corresponding path program 1 times [2022-01-10 02:34:01,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:01,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264745615] [2022-01-10 02:34:01,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:01,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:01,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:01,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:01,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:01,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-10 02:34:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:01,387 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 02:34:01,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:01,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264745615] [2022-01-10 02:34:01,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264745615] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:01,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:01,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 02:34:01,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882811605] [2022-01-10 02:34:01,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:01,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:34:01,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:01,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:34:01,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:34:01,389 INFO L87 Difference]: Start difference. First operand 3485 states and 4285 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 02:34:02,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:02,198 INFO L93 Difference]: Finished difference Result 10171 states and 12399 transitions. [2022-01-10 02:34:02,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-10 02:34:02,198 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-01-10 02:34:02,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:02,214 INFO L225 Difference]: With dead ends: 10171 [2022-01-10 02:34:02,215 INFO L226 Difference]: Without dead ends: 6309 [2022-01-10 02:34:02,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-01-10 02:34:02,224 INFO L933 BasicCegarLoop]: 430 mSDtfsCounter, 1097 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:02,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1111 Valid, 1388 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 02:34:02,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6309 states. [2022-01-10 02:34:02,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6309 to 5980. [2022-01-10 02:34:02,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5980 states, 4628 states have (on average 1.2134831460674158) internal successors, (5616), 4710 states have internal predecessors, (5616), 656 states have call successors, (656), 553 states have call predecessors, (656), 694 states have return successors, (980), 719 states have call predecessors, (980), 655 states have call successors, (980) [2022-01-10 02:34:02,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5980 states to 5980 states and 7252 transitions. [2022-01-10 02:34:02,460 INFO L78 Accepts]: Start accepts. Automaton has 5980 states and 7252 transitions. Word has length 84 [2022-01-10 02:34:02,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:02,460 INFO L470 AbstractCegarLoop]: Abstraction has 5980 states and 7252 transitions. [2022-01-10 02:34:02,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 02:34:02,461 INFO L276 IsEmpty]: Start isEmpty. Operand 5980 states and 7252 transitions. [2022-01-10 02:34:02,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 02:34:02,464 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:02,464 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2022-01-10 02:34:02,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 02:34:02,464 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:02,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:02,465 INFO L85 PathProgramCache]: Analyzing trace with hash -98004109, now seen corresponding path program 1 times [2022-01-10 02:34:02,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:02,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079763940] [2022-01-10 02:34:02,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:02,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:02,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:02,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:02,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:02,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:02,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:02,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:02,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:02,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:02,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 02:34:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:02,532 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 02:34:02,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:02,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079763940] [2022-01-10 02:34:02,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079763940] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:02,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:02,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 02:34:02,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734826634] [2022-01-10 02:34:02,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:02,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 02:34:02,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:02,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 02:34:02,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:34:02,534 INFO L87 Difference]: Start difference. First operand 5980 states and 7252 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 02:34:03,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:03,409 INFO L93 Difference]: Finished difference Result 10437 states and 12592 transitions. [2022-01-10 02:34:03,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-10 02:34:03,409 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2022-01-10 02:34:03,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:03,420 INFO L225 Difference]: With dead ends: 10437 [2022-01-10 02:34:03,420 INFO L226 Difference]: Without dead ends: 5574 [2022-01-10 02:34:03,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-01-10 02:34:03,427 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 1350 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 1463 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:03,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1383 Valid, 1463 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 02:34:03,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5574 states. [2022-01-10 02:34:03,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5574 to 5220. [2022-01-10 02:34:03,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5220 states, 4033 states have (on average 1.2005950905033473) internal successors, (4842), 4110 states have internal predecessors, (4842), 567 states have call successors, (567), 476 states have call predecessors, (567), 618 states have return successors, (799), 636 states have call predecessors, (799), 566 states have call successors, (799) [2022-01-10 02:34:03,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5220 states to 5220 states and 6208 transitions. [2022-01-10 02:34:03,658 INFO L78 Accepts]: Start accepts. Automaton has 5220 states and 6208 transitions. Word has length 93 [2022-01-10 02:34:03,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:03,659 INFO L470 AbstractCegarLoop]: Abstraction has 5220 states and 6208 transitions. [2022-01-10 02:34:03,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 02:34:03,659 INFO L276 IsEmpty]: Start isEmpty. Operand 5220 states and 6208 transitions. [2022-01-10 02:34:03,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 02:34:03,660 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:03,660 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] [2022-01-10 02:34:03,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 02:34:03,661 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:03,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:03,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1764116269, now seen corresponding path program 1 times [2022-01-10 02:34:03,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:03,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832551053] [2022-01-10 02:34:03,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:03,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:03,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:03,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-10 02:34:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:03,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-10 02:34:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:03,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-10 02:34:03,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:03,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 02:34:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:03,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:34:03,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:03,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832551053] [2022-01-10 02:34:03,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832551053] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:03,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:03,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:34:03,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640725549] [2022-01-10 02:34:03,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:03,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:34:03,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:03,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:34:03,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:34:03,719 INFO L87 Difference]: Start difference. First operand 5220 states and 6208 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:34:04,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:04,798 INFO L93 Difference]: Finished difference Result 5660 states and 6895 transitions. [2022-01-10 02:34:04,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 02:34:04,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 02:34:04,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:04,812 INFO L225 Difference]: With dead ends: 5660 [2022-01-10 02:34:04,813 INFO L226 Difference]: Without dead ends: 5495 [2022-01-10 02:34:04,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:34:04,817 INFO L933 BasicCegarLoop]: 426 mSDtfsCounter, 850 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:04,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [871 Valid, 1027 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 02:34:04,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5495 states. [2022-01-10 02:34:05,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5495 to 5388. [2022-01-10 02:34:05,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5388 states, 4181 states have (on average 1.2126285577613012) internal successors, (5070), 4259 states have internal predecessors, (5070), 580 states have call successors, (580), 482 states have call predecessors, (580), 625 states have return successors, (815), 649 states have call predecessors, (815), 579 states have call successors, (815) [2022-01-10 02:34:05,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5388 states to 5388 states and 6465 transitions. [2022-01-10 02:34:05,154 INFO L78 Accepts]: Start accepts. Automaton has 5388 states and 6465 transitions. Word has length 90 [2022-01-10 02:34:05,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:05,154 INFO L470 AbstractCegarLoop]: Abstraction has 5388 states and 6465 transitions. [2022-01-10 02:34:05,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:34:05,154 INFO L276 IsEmpty]: Start isEmpty. Operand 5388 states and 6465 transitions. [2022-01-10 02:34:05,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 02:34:05,171 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:05,172 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] [2022-01-10 02:34:05,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 02:34:05,172 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:05,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:05,172 INFO L85 PathProgramCache]: Analyzing trace with hash 589456817, now seen corresponding path program 1 times [2022-01-10 02:34:05,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:05,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448538076] [2022-01-10 02:34:05,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:05,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:05,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:05,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-10 02:34:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-10 02:34:05,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-10 02:34:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 02:34:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:05,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:34:05,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:05,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448538076] [2022-01-10 02:34:05,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448538076] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:05,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:05,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:34:05,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268735980] [2022-01-10 02:34:05,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:05,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:34:05,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:05,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:34:05,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:34:05,270 INFO L87 Difference]: Start difference. First operand 5388 states and 6465 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:34:06,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:06,640 INFO L93 Difference]: Finished difference Result 6053 states and 7497 transitions. [2022-01-10 02:34:06,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:34:06,641 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 02:34:06,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:06,653 INFO L225 Difference]: With dead ends: 6053 [2022-01-10 02:34:06,653 INFO L226 Difference]: Without dead ends: 5720 [2022-01-10 02:34:06,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:34:06,656 INFO L933 BasicCegarLoop]: 551 mSDtfsCounter, 847 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 1501 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 1614 SdHoareTripleChecker+Invalid, 1594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:06,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [868 Valid, 1614 Invalid, 1594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1501 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 02:34:06,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5720 states. [2022-01-10 02:34:06,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5720 to 5545. [2022-01-10 02:34:06,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5545 states, 4318 states have (on average 1.221861973135711) internal successors, (5276), 4397 states have internal predecessors, (5276), 593 states have call successors, (593), 488 states have call predecessors, (593), 632 states have return successors, (830), 663 states have call predecessors, (830), 592 states have call successors, (830) [2022-01-10 02:34:06,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5545 states to 5545 states and 6699 transitions. [2022-01-10 02:34:06,901 INFO L78 Accepts]: Start accepts. Automaton has 5545 states and 6699 transitions. Word has length 90 [2022-01-10 02:34:06,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:06,901 INFO L470 AbstractCegarLoop]: Abstraction has 5545 states and 6699 transitions. [2022-01-10 02:34:06,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:34:06,901 INFO L276 IsEmpty]: Start isEmpty. Operand 5545 states and 6699 transitions. [2022-01-10 02:34:06,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 02:34:06,903 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:06,903 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] [2022-01-10 02:34:06,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 02:34:06,903 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:06,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:06,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1476679663, now seen corresponding path program 1 times [2022-01-10 02:34:06,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:06,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079019058] [2022-01-10 02:34:06,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:06,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:06,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:06,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-10 02:34:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:06,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-10 02:34:06,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:06,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-10 02:34:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:06,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 02:34:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:06,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:34:06,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:06,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079019058] [2022-01-10 02:34:06,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079019058] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:06,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:06,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:34:06,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121138184] [2022-01-10 02:34:06,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:06,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:34:06,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:06,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:34:06,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:34:06,967 INFO L87 Difference]: Start difference. First operand 5545 states and 6699 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:34:08,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:08,222 INFO L93 Difference]: Finished difference Result 6631 states and 8379 transitions. [2022-01-10 02:34:08,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:34:08,228 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 02:34:08,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:08,243 INFO L225 Difference]: With dead ends: 6631 [2022-01-10 02:34:08,243 INFO L226 Difference]: Without dead ends: 6141 [2022-01-10 02:34:08,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:34:08,261 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 844 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 1599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:08,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 1606 Invalid, 1599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1503 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 02:34:08,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6141 states. [2022-01-10 02:34:08,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6141 to 5860. [2022-01-10 02:34:08,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5860 states, 4593 states have (on average 1.2386239930328762) internal successors, (5689), 4674 states have internal predecessors, (5689), 619 states have call successors, (619), 500 states have call predecessors, (619), 646 states have return successors, (864), 691 states have call predecessors, (864), 618 states have call successors, (864) [2022-01-10 02:34:08,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5860 states to 5860 states and 7172 transitions. [2022-01-10 02:34:08,558 INFO L78 Accepts]: Start accepts. Automaton has 5860 states and 7172 transitions. Word has length 90 [2022-01-10 02:34:08,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:08,559 INFO L470 AbstractCegarLoop]: Abstraction has 5860 states and 7172 transitions. [2022-01-10 02:34:08,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:34:08,559 INFO L276 IsEmpty]: Start isEmpty. Operand 5860 states and 7172 transitions. [2022-01-10 02:34:08,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 02:34:08,560 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:08,560 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] [2022-01-10 02:34:08,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 02:34:08,561 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:08,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:08,561 INFO L85 PathProgramCache]: Analyzing trace with hash -434362895, now seen corresponding path program 1 times [2022-01-10 02:34:08,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:08,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106287520] [2022-01-10 02:34:08,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:08,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:08,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:08,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-10 02:34:08,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:08,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-10 02:34:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:08,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-10 02:34:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:08,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 02:34:08,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:08,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:34:08,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:08,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106287520] [2022-01-10 02:34:08,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106287520] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:08,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:08,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:34:08,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437561531] [2022-01-10 02:34:08,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:08,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:34:08,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:08,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:34:08,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:34:08,619 INFO L87 Difference]: Start difference. First operand 5860 states and 7172 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:34:09,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:09,762 INFO L93 Difference]: Finished difference Result 7746 states and 10076 transitions. [2022-01-10 02:34:09,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:34:09,762 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 02:34:09,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:09,793 INFO L225 Difference]: With dead ends: 7746 [2022-01-10 02:34:09,793 INFO L226 Difference]: Without dead ends: 6941 [2022-01-10 02:34:09,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:34:09,818 INFO L933 BasicCegarLoop]: 539 mSDtfsCounter, 840 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 1594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:09,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [861 Valid, 1602 Invalid, 1594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 02:34:09,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6941 states. [2022-01-10 02:34:10,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6941 to 6491. [2022-01-10 02:34:10,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6491 states, 5144 states have (on average 1.2665241057542769) internal successors, (6515), 5229 states have internal predecessors, (6515), 671 states have call successors, (671), 524 states have call predecessors, (671), 674 states have return successors, (938), 747 states have call predecessors, (938), 670 states have call successors, (938) [2022-01-10 02:34:10,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6491 states to 6491 states and 8124 transitions. [2022-01-10 02:34:10,430 INFO L78 Accepts]: Start accepts. Automaton has 6491 states and 8124 transitions. Word has length 90 [2022-01-10 02:34:10,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:10,430 INFO L470 AbstractCegarLoop]: Abstraction has 6491 states and 8124 transitions. [2022-01-10 02:34:10,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:34:10,430 INFO L276 IsEmpty]: Start isEmpty. Operand 6491 states and 8124 transitions. [2022-01-10 02:34:10,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 02:34:10,432 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:10,432 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] [2022-01-10 02:34:10,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 02:34:10,433 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:10,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:10,433 INFO L85 PathProgramCache]: Analyzing trace with hash -357462097, now seen corresponding path program 1 times [2022-01-10 02:34:10,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:10,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436411392] [2022-01-10 02:34:10,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:10,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:10,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:10,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-10 02:34:10,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:10,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-10 02:34:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:10,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-10 02:34:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:10,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 02:34:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:10,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:34:10,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:10,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436411392] [2022-01-10 02:34:10,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436411392] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:10,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:10,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:34:10,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836150193] [2022-01-10 02:34:10,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:10,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:34:10,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:10,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:34:10,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:34:10,493 INFO L87 Difference]: Start difference. First operand 6491 states and 8124 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:34:11,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:11,872 INFO L93 Difference]: Finished difference Result 9975 states and 13486 transitions. [2022-01-10 02:34:11,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:34:11,873 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 02:34:11,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:11,892 INFO L225 Difference]: With dead ends: 9975 [2022-01-10 02:34:11,892 INFO L226 Difference]: Without dead ends: 8539 [2022-01-10 02:34:11,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:34:11,898 INFO L933 BasicCegarLoop]: 533 mSDtfsCounter, 839 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 1490 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:11,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [860 Valid, 1596 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1490 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 02:34:11,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8539 states. [2022-01-10 02:34:12,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8539 to 7758. [2022-01-10 02:34:12,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7758 states, 6251 states have (on average 1.3074708046712527) internal successors, (8173), 6344 states have internal predecessors, (8173), 775 states have call successors, (775), 572 states have call predecessors, (775), 730 states have return successors, (1104), 859 states have call predecessors, (1104), 774 states have call successors, (1104) [2022-01-10 02:34:12,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7758 states to 7758 states and 10052 transitions. [2022-01-10 02:34:12,313 INFO L78 Accepts]: Start accepts. Automaton has 7758 states and 10052 transitions. Word has length 90 [2022-01-10 02:34:12,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:12,313 INFO L470 AbstractCegarLoop]: Abstraction has 7758 states and 10052 transitions. [2022-01-10 02:34:12,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:34:12,314 INFO L276 IsEmpty]: Start isEmpty. Operand 7758 states and 10052 transitions. [2022-01-10 02:34:12,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 02:34:12,316 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:12,317 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] [2022-01-10 02:34:12,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 02:34:12,317 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:12,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:12,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1324812751, now seen corresponding path program 1 times [2022-01-10 02:34:12,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:12,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509508637] [2022-01-10 02:34:12,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:12,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:12,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:12,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:12,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-10 02:34:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:12,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-10 02:34:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:12,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-10 02:34:12,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:12,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 02:34:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:12,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:34:12,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:12,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509508637] [2022-01-10 02:34:12,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509508637] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:12,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:12,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:34:12,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735898143] [2022-01-10 02:34:12,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:12,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:34:12,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:12,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:34:12,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:34:12,390 INFO L87 Difference]: Start difference. First operand 7758 states and 10052 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:34:14,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:14,172 INFO L93 Difference]: Finished difference Result 15265 states and 21602 transitions. [2022-01-10 02:34:14,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 02:34:14,173 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 02:34:14,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:14,221 INFO L225 Difference]: With dead ends: 15265 [2022-01-10 02:34:14,222 INFO L226 Difference]: Without dead ends: 12562 [2022-01-10 02:34:14,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:34:14,238 INFO L933 BasicCegarLoop]: 432 mSDtfsCounter, 1013 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 1460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:14,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1039 Valid, 1233 Invalid, 1460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 02:34:14,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12562 states. [2022-01-10 02:34:14,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12562 to 10194. [2022-01-10 02:34:14,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10194 states, 8383 states have (on average 1.3576285339377312) internal successors, (11381), 8492 states have internal predecessors, (11381), 967 states have call successors, (967), 668 states have call predecessors, (967), 842 states have return successors, (1474), 1067 states have call predecessors, (1474), 966 states have call successors, (1474) [2022-01-10 02:34:14,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10194 states to 10194 states and 13822 transitions. [2022-01-10 02:34:14,834 INFO L78 Accepts]: Start accepts. Automaton has 10194 states and 13822 transitions. Word has length 90 [2022-01-10 02:34:14,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:14,834 INFO L470 AbstractCegarLoop]: Abstraction has 10194 states and 13822 transitions. [2022-01-10 02:34:14,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:34:14,834 INFO L276 IsEmpty]: Start isEmpty. Operand 10194 states and 13822 transitions. [2022-01-10 02:34:14,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 02:34:14,839 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:14,839 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] [2022-01-10 02:34:14,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 02:34:14,839 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:14,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:14,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1817438925, now seen corresponding path program 1 times [2022-01-10 02:34:14,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:14,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610653189] [2022-01-10 02:34:14,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:14,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:14,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:14,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-10 02:34:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:14,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-10 02:34:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:14,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-10 02:34:14,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:14,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 02:34:14,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:14,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:34:14,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:14,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610653189] [2022-01-10 02:34:14,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610653189] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:14,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:14,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:34:14,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449116399] [2022-01-10 02:34:14,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:14,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:34:14,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:14,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:34:14,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:34:14,906 INFO L87 Difference]: Start difference. First operand 10194 states and 13822 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:34:16,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:16,867 INFO L93 Difference]: Finished difference Result 24231 states and 35574 transitions. [2022-01-10 02:34:16,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 02:34:16,867 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 02:34:16,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:16,922 INFO L225 Difference]: With dead ends: 24231 [2022-01-10 02:34:16,922 INFO L226 Difference]: Without dead ends: 19092 [2022-01-10 02:34:16,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:34:16,942 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 856 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 1609 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 1711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:16,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [876 Valid, 1617 Invalid, 1711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1609 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 02:34:16,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19092 states. [2022-01-10 02:34:17,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19092 to 15127. [2022-01-10 02:34:17,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15127 states, 12724 states have (on average 1.4095410248349576) internal successors, (17935), 12865 states have internal predecessors, (17935), 1335 states have call successors, (1335), 860 states have call predecessors, (1335), 1066 states have return successors, (2360), 1467 states have call predecessors, (2360), 1334 states have call successors, (2360) [2022-01-10 02:34:17,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15127 states to 15127 states and 21630 transitions. [2022-01-10 02:34:17,723 INFO L78 Accepts]: Start accepts. Automaton has 15127 states and 21630 transitions. Word has length 90 [2022-01-10 02:34:17,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:17,723 INFO L470 AbstractCegarLoop]: Abstraction has 15127 states and 21630 transitions. [2022-01-10 02:34:17,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:34:17,723 INFO L276 IsEmpty]: Start isEmpty. Operand 15127 states and 21630 transitions. [2022-01-10 02:34:17,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 02:34:17,731 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:17,731 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] [2022-01-10 02:34:17,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 02:34:17,731 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:17,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:17,731 INFO L85 PathProgramCache]: Analyzing trace with hash -863498767, now seen corresponding path program 1 times [2022-01-10 02:34:17,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:17,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143097465] [2022-01-10 02:34:17,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:17,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:17,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:17,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-10 02:34:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:17,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-10 02:34:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:17,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-10 02:34:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:17,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 02:34:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:17,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:34:17,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:17,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143097465] [2022-01-10 02:34:17,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143097465] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:17,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:17,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:34:17,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773395074] [2022-01-10 02:34:17,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:17,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:34:17,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:17,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:34:17,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:34:17,787 INFO L87 Difference]: Start difference. First operand 15127 states and 21630 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:34:20,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:20,301 INFO L93 Difference]: Finished difference Result 41778 states and 63572 transitions. [2022-01-10 02:34:20,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 02:34:20,302 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 02:34:20,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:20,432 INFO L225 Difference]: With dead ends: 41778 [2022-01-10 02:34:20,433 INFO L226 Difference]: Without dead ends: 31706 [2022-01-10 02:34:20,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:34:20,469 INFO L933 BasicCegarLoop]: 513 mSDtfsCounter, 889 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 1447 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 1568 SdHoareTripleChecker+Invalid, 1552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:20,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [915 Valid, 1568 Invalid, 1552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1447 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 02:34:20,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31706 states. [2022-01-10 02:34:21,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31706 to 24960. [2022-01-10 02:34:21,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24960 states, 21405 states have (on average 1.4516701705209063) internal successors, (31073), 21610 states have internal predecessors, (31073), 2039 states have call successors, (2039), 1244 states have call predecessors, (2039), 1514 states have return successors, (4586), 2235 states have call predecessors, (4586), 2038 states have call successors, (4586) [2022-01-10 02:34:21,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24960 states to 24960 states and 37698 transitions. [2022-01-10 02:34:21,869 INFO L78 Accepts]: Start accepts. Automaton has 24960 states and 37698 transitions. Word has length 90 [2022-01-10 02:34:21,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:21,869 INFO L470 AbstractCegarLoop]: Abstraction has 24960 states and 37698 transitions. [2022-01-10 02:34:21,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:34:21,869 INFO L276 IsEmpty]: Start isEmpty. Operand 24960 states and 37698 transitions. [2022-01-10 02:34:21,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 02:34:21,883 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:21,883 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] [2022-01-10 02:34:21,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 02:34:21,883 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:21,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:21,884 INFO L85 PathProgramCache]: Analyzing trace with hash -2079652493, now seen corresponding path program 1 times [2022-01-10 02:34:21,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:21,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277601272] [2022-01-10 02:34:21,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:21,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:21,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:21,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-10 02:34:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:21,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-10 02:34:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:21,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-10 02:34:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:21,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 02:34:21,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:21,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:34:21,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:21,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277601272] [2022-01-10 02:34:21,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277601272] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:21,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:21,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:34:21,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869389170] [2022-01-10 02:34:21,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:21,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:34:21,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:21,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:34:21,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:34:21,960 INFO L87 Difference]: Start difference. First operand 24960 states and 37698 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:34:25,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:25,735 INFO L93 Difference]: Finished difference Result 75689 states and 119626 transitions. [2022-01-10 02:34:25,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 02:34:25,736 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 02:34:25,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:25,960 INFO L225 Difference]: With dead ends: 75689 [2022-01-10 02:34:25,960 INFO L226 Difference]: Without dead ends: 55784 [2022-01-10 02:34:26,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:34:26,025 INFO L933 BasicCegarLoop]: 509 mSDtfsCounter, 849 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 1436 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:26,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [875 Valid, 1564 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1436 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 02:34:26,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55784 states. [2022-01-10 02:34:28,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55784 to 44561. [2022-01-10 02:34:28,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44561 states, 38766 states have (on average 1.4809626992725584) internal successors, (57411), 39099 states have internal predecessors, (57411), 3383 states have call successors, (3383), 2012 states have call predecessors, (3383), 2410 states have return successors, (10432), 3707 states have call predecessors, (10432), 3382 states have call successors, (10432) [2022-01-10 02:34:28,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44561 states to 44561 states and 71226 transitions. [2022-01-10 02:34:28,426 INFO L78 Accepts]: Start accepts. Automaton has 44561 states and 71226 transitions. Word has length 90 [2022-01-10 02:34:28,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:28,427 INFO L470 AbstractCegarLoop]: Abstraction has 44561 states and 71226 transitions. [2022-01-10 02:34:28,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:34:28,427 INFO L276 IsEmpty]: Start isEmpty. Operand 44561 states and 71226 transitions. [2022-01-10 02:34:28,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 02:34:28,449 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:28,449 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] [2022-01-10 02:34:28,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 02:34:28,449 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:28,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:28,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1483347377, now seen corresponding path program 1 times [2022-01-10 02:34:28,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:28,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539069436] [2022-01-10 02:34:28,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:28,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:28,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:28,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-10 02:34:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:28,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-10 02:34:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:28,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-10 02:34:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:28,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 02:34:28,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:28,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:34:28,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:28,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539069436] [2022-01-10 02:34:28,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539069436] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:28,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:28,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:34:28,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857302851] [2022-01-10 02:34:28,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:28,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:34:28,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:28,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:34:28,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:34:28,516 INFO L87 Difference]: Start difference. First operand 44561 states and 71226 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:34:34,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:34,420 INFO L93 Difference]: Finished difference Result 113398 states and 180003 transitions. [2022-01-10 02:34:34,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 02:34:34,421 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 02:34:34,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:34,649 INFO L225 Difference]: With dead ends: 113398 [2022-01-10 02:34:34,649 INFO L226 Difference]: Without dead ends: 73893 [2022-01-10 02:34:34,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-01-10 02:34:34,741 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 556 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:34,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [556 Valid, 1291 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 02:34:34,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73893 states. [2022-01-10 02:34:37,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73893 to 45332. [2022-01-10 02:34:37,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45332 states, 39537 states have (on average 1.4715835799377799) internal successors, (58182), 39870 states have internal predecessors, (58182), 3383 states have call successors, (3383), 2012 states have call predecessors, (3383), 2410 states have return successors, (10432), 3707 states have call predecessors, (10432), 3382 states have call successors, (10432) [2022-01-10 02:34:37,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45332 states to 45332 states and 71997 transitions. [2022-01-10 02:34:37,701 INFO L78 Accepts]: Start accepts. Automaton has 45332 states and 71997 transitions. Word has length 90 [2022-01-10 02:34:37,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:37,701 INFO L470 AbstractCegarLoop]: Abstraction has 45332 states and 71997 transitions. [2022-01-10 02:34:37,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:34:37,701 INFO L276 IsEmpty]: Start isEmpty. Operand 45332 states and 71997 transitions. [2022-01-10 02:34:37,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 02:34:37,749 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:37,749 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] [2022-01-10 02:34:37,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 02:34:37,749 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:37,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:37,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1550702669, now seen corresponding path program 1 times [2022-01-10 02:34:37,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:37,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143163773] [2022-01-10 02:34:37,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:37,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:37,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:37,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-10 02:34:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:37,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-01-10 02:34:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:37,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-01-10 02:34:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:37,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 02:34:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:37,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:34:37,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:37,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143163773] [2022-01-10 02:34:37,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143163773] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:37,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:37,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:34:37,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46310041] [2022-01-10 02:34:37,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:37,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:34:37,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:37,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:34:37,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:34:37,818 INFO L87 Difference]: Start difference. First operand 45332 states and 71997 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:34:48,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:48,363 INFO L93 Difference]: Finished difference Result 185375 states and 302831 transitions. [2022-01-10 02:34:48,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 02:34:48,363 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 02:34:48,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:48,951 INFO L225 Difference]: With dead ends: 185375 [2022-01-10 02:34:48,951 INFO L226 Difference]: Without dead ends: 145099 [2022-01-10 02:34:49,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-01-10 02:34:49,108 INFO L933 BasicCegarLoop]: 668 mSDtfsCounter, 1838 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 1565 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1863 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 1900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 1565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:49,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1863 Valid, 1460 Invalid, 1900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 1565 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 02:34:49,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145099 states.