/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-Before.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 09:31:58,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 09:31:58,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 09:31:58,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 09:31:58,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 09:31:58,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 09:31:58,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 09:31:58,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 09:31:58,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 09:31:58,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 09:31:58,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 09:31:58,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 09:31:58,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 09:31:58,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 09:31:58,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 09:31:58,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 09:31:58,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 09:31:58,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 09:31:58,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 09:31:58,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 09:31:58,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 09:31:58,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 09:31:58,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 09:31:58,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 09:31:58,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 09:31:58,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 09:31:58,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 09:31:58,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 09:31:58,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 09:31:58,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 09:31:58,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 09:31:58,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 09:31:58,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 09:31:58,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 09:31:58,667 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 09:31:58,667 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 09:31:58,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 09:31:58,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 09:31:58,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 09:31:58,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 09:31:58,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 09:31:58,674 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-Before.epf [2022-01-19 09:31:58,709 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 09:31:58,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 09:31:58,711 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 09:31:58,711 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 09:31:58,711 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 09:31:58,711 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 09:31:58,711 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 09:31:58,712 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 09:31:58,712 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 09:31:58,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 09:31:58,713 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 09:31:58,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 09:31:58,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 09:31:58,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 09:31:58,713 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 09:31:58,713 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 09:31:58,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 09:31:58,714 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 09:31:58,714 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 09:31:58,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 09:31:58,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 09:31:58,714 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 09:31:58,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 09:31:58,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 09:31:58,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 09:31:58,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 09:31:58,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 09:31:58,716 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 09:31:58,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 09:31:58,716 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 09:31:58,716 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 09:31:58,717 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=BEFORE [2022-01-19 09:31:58,717 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 09:31:58,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 09:31:58,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 09:31:58,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 09:31:58,978 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 09:31:58,978 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 09:31:58,979 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i [2022-01-19 09:31:59,022 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58bcf67dd/2e1f89f084c74a34bc1180129a855026/FLAGd85db77aa [2022-01-19 09:31:59,426 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 09:31:59,427 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i [2022-01-19 09:31:59,444 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58bcf67dd/2e1f89f084c74a34bc1180129a855026/FLAGd85db77aa [2022-01-19 09:31:59,787 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58bcf67dd/2e1f89f084c74a34bc1180129a855026 [2022-01-19 09:31:59,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 09:31:59,791 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 09:31:59,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 09:31:59,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 09:31:59,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 09:31:59,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 09:31:59" (1/1) ... [2022-01-19 09:31:59,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f3ff84a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:31:59, skipping insertion in model container [2022-01-19 09:31:59,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 09:31:59" (1/1) ... [2022-01-19 09:31:59,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 09:31:59,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 09:32:00,132 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30451,30464] [2022-01-19 09:32:00,139 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30681,30694] [2022-01-19 09:32:00,146 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30979,30992] [2022-01-19 09:32:00,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 09:32:00,164 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 09:32:00,211 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30451,30464] [2022-01-19 09:32:00,213 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30681,30694] [2022-01-19 09:32:00,215 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30979,30992] [2022-01-19 09:32:00,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 09:32:00,258 INFO L208 MainTranslator]: Completed translation [2022-01-19 09:32:00,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:32:00 WrapperNode [2022-01-19 09:32:00,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 09:32:00,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 09:32:00,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 09:32:00,260 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 09:32:00,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:32:00" (1/1) ... [2022-01-19 09:32:00,294 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:32:00" (1/1) ... [2022-01-19 09:32:00,324 INFO L137 Inliner]: procedures = 168, calls = 36, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 142 [2022-01-19 09:32:00,325 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 09:32:00,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 09:32:00,325 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 09:32:00,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 09:32:00,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:32:00" (1/1) ... [2022-01-19 09:32:00,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:32:00" (1/1) ... [2022-01-19 09:32:00,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:32:00" (1/1) ... [2022-01-19 09:32:00,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:32:00" (1/1) ... [2022-01-19 09:32:00,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:32:00" (1/1) ... [2022-01-19 09:32:00,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:32:00" (1/1) ... [2022-01-19 09:32:00,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:32:00" (1/1) ... [2022-01-19 09:32:00,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 09:32:00,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 09:32:00,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 09:32:00,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 09:32:00,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:32:00" (1/1) ... [2022-01-19 09:32:00,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 09:32:00,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:32:00,403 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) [2022-01-19 09:32:00,411 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 [2022-01-19 09:32:00,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 09:32:00,432 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-01-19 09:32:00,432 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-01-19 09:32:00,432 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-01-19 09:32:00,432 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-01-19 09:32:00,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 09:32:00,433 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-01-19 09:32:00,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 09:32:00,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 09:32:00,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 09:32:00,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-19 09:32:00,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 09:32:00,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 09:32:00,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 09:32:00,435 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 09:32:00,566 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 09:32:00,567 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 09:32:00,864 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 09:32:00,871 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 09:32:00,871 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-19 09:32:00,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 09:32:00 BoogieIcfgContainer [2022-01-19 09:32:00,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 09:32:00,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 09:32:00,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 09:32:00,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 09:32:00,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 09:31:59" (1/3) ... [2022-01-19 09:32:00,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eb44ca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 09:32:00, skipping insertion in model container [2022-01-19 09:32:00,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 09:32:00" (2/3) ... [2022-01-19 09:32:00,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eb44ca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 09:32:00, skipping insertion in model container [2022-01-19 09:32:00,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 09:32:00" (3/3) ... [2022-01-19 09:32:00,881 INFO L111 eAbstractionObserver]: Analyzing ICFG circular_buffer_ok.i [2022-01-19 09:32:00,884 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 09:32:00,884 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-19 09:32:00,884 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 09:32:00,926 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,927 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,927 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,927 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,927 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,928 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,928 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,928 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,928 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,928 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,928 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,928 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,929 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,929 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,929 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,930 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,930 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,930 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,930 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,930 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,930 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,931 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,931 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,931 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,932 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,932 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,932 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,932 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,932 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,932 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,933 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,933 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,933 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,933 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,933 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,933 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,934 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,934 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,934 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,934 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,934 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,934 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,935 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,935 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,935 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,935 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,936 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,937 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,938 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,938 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,938 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,939 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,939 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,939 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,940 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,940 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,940 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,940 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,940 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,941 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,941 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,942 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,942 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,942 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,942 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,942 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,942 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,943 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,943 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,943 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,943 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,943 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,943 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,944 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,944 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,945 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,945 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,945 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,945 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,945 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,945 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,945 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,946 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,946 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,946 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,946 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,946 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,946 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,947 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,947 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,947 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,947 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,947 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,947 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,948 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,948 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,948 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,948 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,949 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,949 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,949 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,949 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,949 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,949 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,950 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,950 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,950 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,950 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,950 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,950 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,950 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,951 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,952 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,952 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,952 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,952 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,953 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,953 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,953 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,953 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,954 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,954 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,954 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,954 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,954 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,954 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,954 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,955 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,955 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,956 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,956 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,956 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,956 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,956 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,957 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,957 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,957 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,957 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,957 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,957 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,958 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,958 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,958 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,958 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,961 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,961 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,961 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,961 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,961 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,961 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,962 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_insertLogElement_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,962 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,962 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,962 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,962 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,964 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,964 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,964 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,964 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,964 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,965 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,965 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,965 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,965 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,965 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_removeLogElement_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,965 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 09:32:00,975 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-19 09:32:01,010 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 09:32:01,016 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=false, 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 [2022-01-19 09:32:01,016 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-01-19 09:32:01,026 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 154 places, 158 transitions, 332 flow [2022-01-19 09:32:01,077 INFO L129 PetriNetUnfolder]: 11/156 cut-off events. [2022-01-19 09:32:01,078 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 09:32:01,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 156 events. 11/156 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 292 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2022-01-19 09:32:01,081 INFO L82 GeneralOperation]: Start removeDead. Operand has 154 places, 158 transitions, 332 flow [2022-01-19 09:32:01,086 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 146 transitions, 301 flow [2022-01-19 09:32:01,109 INFO L129 PetriNetUnfolder]: 5/110 cut-off events. [2022-01-19 09:32:01,109 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-01-19 09:32:01,109 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:32:01,110 INFO L254 CegarLoopForPetriNet]: 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] [2022-01-19 09:32:01,110 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-19 09:32:01,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:32:01,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1257082362, now seen corresponding path program 1 times [2022-01-19 09:32:01,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:32:01,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728508994] [2022-01-19 09:32:01,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:32:01,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:32:01,285 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-19 09:32:01,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1419313554] [2022-01-19 09:32:01,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:32:01,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:32:01,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:32:01,291 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) [2022-01-19 09:32:01,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-19 09:32:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:32:01,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-19 09:32:01,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 09:32:01,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 09:32:01,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 09:32:01,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:32:01,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728508994] [2022-01-19 09:32:01,875 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-19 09:32:01,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419313554] [2022-01-19 09:32:01,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419313554] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 09:32:01,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 09:32:01,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 09:32:01,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940364498] [2022-01-19 09:32:01,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:32:01,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 09:32:01,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:32:01,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 09:32:01,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-19 09:32:01,916 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 158 [2022-01-19 09:32:01,920 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 146 transitions, 301 flow. Second operand has 4 states, 4 states have (on average 135.5) internal successors, (542), 4 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:01,921 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:32:01,921 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 158 [2022-01-19 09:32:01,925 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:32:02,046 INFO L129 PetriNetUnfolder]: 29/250 cut-off events. [2022-01-19 09:32:02,046 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-01-19 09:32:02,048 INFO L84 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 250 events. 29/250 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 894 event pairs, 8 based on Foata normal form. 21/246 useless extension candidates. Maximal degree in co-relation 240. Up to 29 conditions per place. [2022-01-19 09:32:02,049 INFO L132 encePairwiseOnDemand]: 150/158 looper letters, 18 selfloop transitions, 3 changer transitions 0/142 dead transitions. [2022-01-19 09:32:02,050 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 142 transitions, 341 flow [2022-01-19 09:32:02,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 09:32:02,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 09:32:02,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 562 transitions. [2022-01-19 09:32:02,062 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8892405063291139 [2022-01-19 09:32:02,063 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 562 transitions. [2022-01-19 09:32:02,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 562 transitions. [2022-01-19 09:32:02,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:32:02,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 562 transitions. [2022-01-19 09:32:02,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 140.5) internal successors, (562), 4 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:02,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:02,076 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:02,079 INFO L186 Difference]: Start difference. First operand has 142 places, 146 transitions, 301 flow. Second operand 4 states and 562 transitions. [2022-01-19 09:32:02,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 142 transitions, 341 flow [2022-01-19 09:32:02,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 142 transitions, 334 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 09:32:02,087 INFO L242 Difference]: Finished difference. Result has 137 places, 136 transitions, 282 flow [2022-01-19 09:32:02,089 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=282, PETRI_PLACES=137, PETRI_TRANSITIONS=136} [2022-01-19 09:32:02,091 INFO L334 CegarLoopForPetriNet]: 142 programPoint places, -5 predicate places. [2022-01-19 09:32:02,091 INFO L470 AbstractCegarLoop]: Abstraction has has 137 places, 136 transitions, 282 flow [2022-01-19 09:32:02,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 135.5) internal successors, (542), 4 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:02,092 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:32:02,092 INFO L254 CegarLoopForPetriNet]: 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] [2022-01-19 09:32:02,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-19 09:32:02,315 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,SelfDestructingSolverStorable0 [2022-01-19 09:32:02,316 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-19 09:32:02,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:32:02,316 INFO L85 PathProgramCache]: Analyzing trace with hash 286149751, now seen corresponding path program 1 times [2022-01-19 09:32:02,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:32:02,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146998308] [2022-01-19 09:32:02,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:32:02,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:32:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:32:02,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 09:32:02,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:32:02,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146998308] [2022-01-19 09:32:02,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146998308] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 09:32:02,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 09:32:02,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 09:32:02,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212938104] [2022-01-19 09:32:02,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:32:02,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 09:32:02,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:32:02,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 09:32:02,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-19 09:32:02,524 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 158 [2022-01-19 09:32:02,525 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 136 transitions, 282 flow. Second operand has 6 states, 6 states have (on average 131.66666666666666) internal successors, (790), 6 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:02,525 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:32:02,525 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 158 [2022-01-19 09:32:02,526 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:32:02,631 INFO L129 PetriNetUnfolder]: 51/369 cut-off events. [2022-01-19 09:32:02,631 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-01-19 09:32:02,634 INFO L84 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 369 events. 51/369 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1421 event pairs, 10 based on Foata normal form. 2/328 useless extension candidates. Maximal degree in co-relation 266. Up to 56 conditions per place. [2022-01-19 09:32:02,637 INFO L132 encePairwiseOnDemand]: 151/158 looper letters, 19 selfloop transitions, 5 changer transitions 0/142 dead transitions. [2022-01-19 09:32:02,637 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 142 transitions, 349 flow [2022-01-19 09:32:02,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 09:32:02,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 09:32:02,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 806 transitions. [2022-01-19 09:32:02,641 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8502109704641351 [2022-01-19 09:32:02,641 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 806 transitions. [2022-01-19 09:32:02,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 806 transitions. [2022-01-19 09:32:02,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:32:02,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 806 transitions. [2022-01-19 09:32:02,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 134.33333333333334) internal successors, (806), 6 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:02,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:02,647 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:02,647 INFO L186 Difference]: Start difference. First operand has 137 places, 136 transitions, 282 flow. Second operand 6 states and 806 transitions. [2022-01-19 09:32:02,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 142 transitions, 349 flow [2022-01-19 09:32:02,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 142 transitions, 339 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 09:32:02,654 INFO L242 Difference]: Finished difference. Result has 140 places, 137 transitions, 296 flow [2022-01-19 09:32:02,655 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=296, PETRI_PLACES=140, PETRI_TRANSITIONS=137} [2022-01-19 09:32:02,655 INFO L334 CegarLoopForPetriNet]: 142 programPoint places, -2 predicate places. [2022-01-19 09:32:02,655 INFO L470 AbstractCegarLoop]: Abstraction has has 140 places, 137 transitions, 296 flow [2022-01-19 09:32:02,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 131.66666666666666) internal successors, (790), 6 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:02,656 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:32:02,657 INFO L254 CegarLoopForPetriNet]: 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] [2022-01-19 09:32:02,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 09:32:02,657 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-19 09:32:02,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:32:02,658 INFO L85 PathProgramCache]: Analyzing trace with hash 830490914, now seen corresponding path program 1 times [2022-01-19 09:32:02,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:32:02,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941910094] [2022-01-19 09:32:02,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:32:02,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:32:02,698 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-19 09:32:02,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1893012632] [2022-01-19 09:32:02,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:32:02,699 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:32:02,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:32:02,700 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 09:32:02,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-19 09:32:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:32:02,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-19 09:32:02,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 09:32:02,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 09:32:02,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 09:32:02,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:32:02,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941910094] [2022-01-19 09:32:02,912 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-19 09:32:02,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893012632] [2022-01-19 09:32:02,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893012632] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 09:32:02,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 09:32:02,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 09:32:02,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931218464] [2022-01-19 09:32:02,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:32:02,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 09:32:02,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:32:02,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 09:32:02,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 09:32:02,920 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 158 [2022-01-19 09:32:02,921 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 137 transitions, 296 flow. Second operand has 6 states, 6 states have (on average 128.33333333333334) internal successors, (770), 6 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:02,921 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:32:02,921 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 158 [2022-01-19 09:32:02,921 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:32:03,061 INFO L129 PetriNetUnfolder]: 54/345 cut-off events. [2022-01-19 09:32:03,062 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 09:32:03,063 INFO L84 FinitePrefix]: Finished finitePrefix Result has 558 conditions, 345 events. 54/345 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1202 event pairs, 11 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 233. Up to 39 conditions per place. [2022-01-19 09:32:03,065 INFO L132 encePairwiseOnDemand]: 150/158 looper letters, 28 selfloop transitions, 9 changer transitions 0/151 dead transitions. [2022-01-19 09:32:03,065 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 151 transitions, 408 flow [2022-01-19 09:32:03,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 09:32:03,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 09:32:03,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 920 transitions. [2022-01-19 09:32:03,069 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8318264014466547 [2022-01-19 09:32:03,071 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 920 transitions. [2022-01-19 09:32:03,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 920 transitions. [2022-01-19 09:32:03,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:32:03,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 920 transitions. [2022-01-19 09:32:03,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 131.42857142857142) internal successors, (920), 7 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:03,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:03,076 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:03,076 INFO L186 Difference]: Start difference. First operand has 140 places, 137 transitions, 296 flow. Second operand 7 states and 920 transitions. [2022-01-19 09:32:03,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 151 transitions, 408 flow [2022-01-19 09:32:03,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 151 transitions, 400 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 09:32:03,080 INFO L242 Difference]: Finished difference. Result has 145 places, 142 transitions, 335 flow [2022-01-19 09:32:03,080 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=335, PETRI_PLACES=145, PETRI_TRANSITIONS=142} [2022-01-19 09:32:03,081 INFO L334 CegarLoopForPetriNet]: 142 programPoint places, 3 predicate places. [2022-01-19 09:32:03,081 INFO L470 AbstractCegarLoop]: Abstraction has has 145 places, 142 transitions, 335 flow [2022-01-19 09:32:03,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 128.33333333333334) internal successors, (770), 6 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:03,082 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:32:03,082 INFO L254 CegarLoopForPetriNet]: 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] [2022-01-19 09:32:03,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-19 09:32:03,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-19 09:32:03,305 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-19 09:32:03,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:32:03,306 INFO L85 PathProgramCache]: Analyzing trace with hash 834900101, now seen corresponding path program 1 times [2022-01-19 09:32:03,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:32:03,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990844254] [2022-01-19 09:32:03,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:32:03,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:32:03,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:32:03,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 09:32:03,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:32:03,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990844254] [2022-01-19 09:32:03,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990844254] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 09:32:03,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 09:32:03,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 09:32:03,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924860534] [2022-01-19 09:32:03,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:32:03,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 09:32:03,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:32:03,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 09:32:03,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 09:32:03,392 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 158 [2022-01-19 09:32:03,393 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 142 transitions, 335 flow. Second operand has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:03,393 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:32:03,393 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 158 [2022-01-19 09:32:03,393 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:32:03,462 INFO L129 PetriNetUnfolder]: 43/500 cut-off events. [2022-01-19 09:32:03,462 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-01-19 09:32:03,464 INFO L84 FinitePrefix]: Finished finitePrefix Result has 672 conditions, 500 events. 43/500 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1936 event pairs, 5 based on Foata normal form. 0/467 useless extension candidates. Maximal degree in co-relation 520. Up to 36 conditions per place. [2022-01-19 09:32:03,466 INFO L132 encePairwiseOnDemand]: 154/158 looper letters, 10 selfloop transitions, 3 changer transitions 0/146 dead transitions. [2022-01-19 09:32:03,466 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 146 transitions, 372 flow [2022-01-19 09:32:03,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 09:32:03,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 09:32:03,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 434 transitions. [2022-01-19 09:32:03,468 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9156118143459916 [2022-01-19 09:32:03,468 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 434 transitions. [2022-01-19 09:32:03,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 434 transitions. [2022-01-19 09:32:03,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:32:03,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 434 transitions. [2022-01-19 09:32:03,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:03,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:03,471 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:03,471 INFO L186 Difference]: Start difference. First operand has 145 places, 142 transitions, 335 flow. Second operand 3 states and 434 transitions. [2022-01-19 09:32:03,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 146 transitions, 372 flow [2022-01-19 09:32:03,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 146 transitions, 370 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 09:32:03,476 INFO L242 Difference]: Finished difference. Result has 147 places, 143 transitions, 348 flow [2022-01-19 09:32:03,476 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=348, PETRI_PLACES=147, PETRI_TRANSITIONS=143} [2022-01-19 09:32:03,477 INFO L334 CegarLoopForPetriNet]: 142 programPoint places, 5 predicate places. [2022-01-19 09:32:03,477 INFO L470 AbstractCegarLoop]: Abstraction has has 147 places, 143 transitions, 348 flow [2022-01-19 09:32:03,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:03,478 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:32:03,478 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 09:32:03,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 09:32:03,478 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-19 09:32:03,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:32:03,478 INFO L85 PathProgramCache]: Analyzing trace with hash -520728899, now seen corresponding path program 1 times [2022-01-19 09:32:03,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:32:03,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644884489] [2022-01-19 09:32:03,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:32:03,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:32:03,508 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-19 09:32:03,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [438342894] [2022-01-19 09:32:03,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:32:03,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:32:03,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:32:03,512 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 09:32:03,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-19 09:32:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:32:03,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-19 09:32:03,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 09:32:03,897 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 09:32:03,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 09:32:03,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:32:03,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644884489] [2022-01-19 09:32:03,898 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-19 09:32:03,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438342894] [2022-01-19 09:32:03,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438342894] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 09:32:03,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 09:32:03,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 09:32:03,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929442234] [2022-01-19 09:32:03,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:32:03,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 09:32:03,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:32:03,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 09:32:03,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-19 09:32:03,905 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 158 [2022-01-19 09:32:03,905 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 143 transitions, 348 flow. Second operand has 4 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:03,905 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:32:03,905 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 158 [2022-01-19 09:32:03,905 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:32:03,970 INFO L129 PetriNetUnfolder]: 40/431 cut-off events. [2022-01-19 09:32:03,970 INFO L130 PetriNetUnfolder]: For 33/36 co-relation queries the response was YES. [2022-01-19 09:32:03,972 INFO L84 FinitePrefix]: Finished finitePrefix Result has 601 conditions, 431 events. 40/431 cut-off events. For 33/36 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1466 event pairs, 10 based on Foata normal form. 3/409 useless extension candidates. Maximal degree in co-relation 416. Up to 52 conditions per place. [2022-01-19 09:32:03,973 INFO L132 encePairwiseOnDemand]: 156/158 looper letters, 17 selfloop transitions, 1 changer transitions 0/137 dead transitions. [2022-01-19 09:32:03,973 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 137 transitions, 360 flow [2022-01-19 09:32:03,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 09:32:03,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 09:32:03,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 417 transitions. [2022-01-19 09:32:03,975 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.879746835443038 [2022-01-19 09:32:03,975 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 417 transitions. [2022-01-19 09:32:03,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 417 transitions. [2022-01-19 09:32:03,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:32:03,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 417 transitions. [2022-01-19 09:32:03,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:03,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:03,979 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:03,979 INFO L186 Difference]: Start difference. First operand has 147 places, 143 transitions, 348 flow. Second operand 3 states and 417 transitions. [2022-01-19 09:32:03,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 137 transitions, 360 flow [2022-01-19 09:32:03,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 137 transitions, 343 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-01-19 09:32:03,984 INFO L242 Difference]: Finished difference. Result has 139 places, 135 transitions, 305 flow [2022-01-19 09:32:03,985 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=305, PETRI_PLACES=139, PETRI_TRANSITIONS=135} [2022-01-19 09:32:03,987 INFO L334 CegarLoopForPetriNet]: 142 programPoint places, -3 predicate places. [2022-01-19 09:32:03,987 INFO L470 AbstractCegarLoop]: Abstraction has has 139 places, 135 transitions, 305 flow [2022-01-19 09:32:03,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:03,987 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:32:03,988 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 09:32:04,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-19 09:32:04,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:32:04,203 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-19 09:32:04,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:32:04,204 INFO L85 PathProgramCache]: Analyzing trace with hash -157225881, now seen corresponding path program 1 times [2022-01-19 09:32:04,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:32:04,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471335931] [2022-01-19 09:32:04,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:32:04,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:32:04,220 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-19 09:32:04,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [108103973] [2022-01-19 09:32:04,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:32:04,221 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:32:04,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:32:04,222 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 09:32:04,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-19 09:32:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:32:04,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-19 09:32:04,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 09:32:04,417 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-19 09:32:04,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 09:32:04,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 09:32:04,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:32:04,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471335931] [2022-01-19 09:32:04,479 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-19 09:32:04,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108103973] [2022-01-19 09:32:04,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108103973] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 09:32:04,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 09:32:04,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 09:32:04,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478483488] [2022-01-19 09:32:04,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:32:04,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 09:32:04,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:32:04,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 09:32:04,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 09:32:04,482 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 158 [2022-01-19 09:32:04,483 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 135 transitions, 305 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:04,483 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:32:04,483 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 158 [2022-01-19 09:32:04,483 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:32:04,540 INFO L129 PetriNetUnfolder]: 35/425 cut-off events. [2022-01-19 09:32:04,541 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-01-19 09:32:04,542 INFO L84 FinitePrefix]: Finished finitePrefix Result has 564 conditions, 425 events. 35/425 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1610 event pairs, 10 based on Foata normal form. 7/412 useless extension candidates. Maximal degree in co-relation 388. Up to 42 conditions per place. [2022-01-19 09:32:04,544 INFO L132 encePairwiseOnDemand]: 154/158 looper letters, 15 selfloop transitions, 4 changer transitions 0/137 dead transitions. [2022-01-19 09:32:04,544 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 137 transitions, 350 flow [2022-01-19 09:32:04,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 09:32:04,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 09:32:04,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 417 transitions. [2022-01-19 09:32:04,546 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.879746835443038 [2022-01-19 09:32:04,546 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 417 transitions. [2022-01-19 09:32:04,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 417 transitions. [2022-01-19 09:32:04,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:32:04,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 417 transitions. [2022-01-19 09:32:04,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:04,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:04,548 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:04,548 INFO L186 Difference]: Start difference. First operand has 139 places, 135 transitions, 305 flow. Second operand 3 states and 417 transitions. [2022-01-19 09:32:04,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 137 transitions, 350 flow [2022-01-19 09:32:04,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 137 transitions, 348 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-01-19 09:32:04,552 INFO L242 Difference]: Finished difference. Result has 141 places, 135 transitions, 311 flow [2022-01-19 09:32:04,553 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=311, PETRI_PLACES=141, PETRI_TRANSITIONS=135} [2022-01-19 09:32:04,555 INFO L334 CegarLoopForPetriNet]: 142 programPoint places, -1 predicate places. [2022-01-19 09:32:04,555 INFO L470 AbstractCegarLoop]: Abstraction has has 141 places, 135 transitions, 311 flow [2022-01-19 09:32:04,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:04,555 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:32:04,555 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 09:32:04,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-19 09:32:04,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:32:04,774 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-19 09:32:04,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:32:04,775 INFO L85 PathProgramCache]: Analyzing trace with hash 637106843, now seen corresponding path program 1 times [2022-01-19 09:32:04,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:32:04,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051292471] [2022-01-19 09:32:04,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:32:04,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:32:04,790 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-19 09:32:04,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1248042702] [2022-01-19 09:32:04,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:32:04,791 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:32:04,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:32:04,792 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 09:32:04,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-19 09:32:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:32:05,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-19 09:32:05,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 09:32:05,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 09:32:05,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 09:32:05,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:32:05,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051292471] [2022-01-19 09:32:05,522 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-19 09:32:05,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248042702] [2022-01-19 09:32:05,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248042702] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 09:32:05,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 09:32:05,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 09:32:05,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350681585] [2022-01-19 09:32:05,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:32:05,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 09:32:05,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:32:05,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 09:32:05,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-19 09:32:05,525 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 158 [2022-01-19 09:32:05,526 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 135 transitions, 311 flow. Second operand has 8 states, 8 states have (on average 128.0) internal successors, (1024), 8 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:05,526 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:32:05,526 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 158 [2022-01-19 09:32:05,526 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:32:05,665 INFO L129 PetriNetUnfolder]: 45/520 cut-off events. [2022-01-19 09:32:05,665 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-01-19 09:32:05,667 INFO L84 FinitePrefix]: Finished finitePrefix Result has 755 conditions, 520 events. 45/520 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2204 event pairs, 13 based on Foata normal form. 0/488 useless extension candidates. Maximal degree in co-relation 485. Up to 49 conditions per place. [2022-01-19 09:32:05,668 INFO L132 encePairwiseOnDemand]: 150/158 looper letters, 27 selfloop transitions, 8 changer transitions 0/147 dead transitions. [2022-01-19 09:32:05,668 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 147 transitions, 415 flow [2022-01-19 09:32:05,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 09:32:05,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 09:32:05,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1044 transitions. [2022-01-19 09:32:05,671 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8259493670886076 [2022-01-19 09:32:05,672 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1044 transitions. [2022-01-19 09:32:05,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1044 transitions. [2022-01-19 09:32:05,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:32:05,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1044 transitions. [2022-01-19 09:32:05,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 130.5) internal successors, (1044), 8 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:05,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 158.0) internal successors, (1422), 9 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:05,677 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 158.0) internal successors, (1422), 9 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:05,677 INFO L186 Difference]: Start difference. First operand has 141 places, 135 transitions, 311 flow. Second operand 8 states and 1044 transitions. [2022-01-19 09:32:05,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 147 transitions, 415 flow [2022-01-19 09:32:05,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 147 transitions, 411 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 09:32:05,681 INFO L242 Difference]: Finished difference. Result has 148 places, 137 transitions, 338 flow [2022-01-19 09:32:05,681 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=338, PETRI_PLACES=148, PETRI_TRANSITIONS=137} [2022-01-19 09:32:05,681 INFO L334 CegarLoopForPetriNet]: 142 programPoint places, 6 predicate places. [2022-01-19 09:32:05,681 INFO L470 AbstractCegarLoop]: Abstraction has has 148 places, 137 transitions, 338 flow [2022-01-19 09:32:05,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 128.0) internal successors, (1024), 8 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:05,682 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:32:05,682 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 09:32:05,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-19 09:32:05,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:32:05,906 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-19 09:32:05,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:32:05,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1300379129, now seen corresponding path program 1 times [2022-01-19 09:32:05,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:32:05,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908083621] [2022-01-19 09:32:05,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:32:05,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:32:05,926 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-19 09:32:05,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [691282550] [2022-01-19 09:32:05,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:32:05,927 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:32:05,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:32:05,928 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 09:32:05,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-19 09:32:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:32:06,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-19 09:32:06,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 09:32:06,208 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-01-19 09:32:06,380 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-19 09:32:06,381 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-01-19 09:32:06,405 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-19 09:32:06,405 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-19 09:32:06,535 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-19 09:32:06,587 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-01-19 09:32:06,788 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-01-19 09:32:07,011 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2022-01-19 09:32:07,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 09:32:07,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 09:32:07,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:32:07,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908083621] [2022-01-19 09:32:07,158 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-19 09:32:07,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691282550] [2022-01-19 09:32:07,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691282550] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 09:32:07,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 09:32:07,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-19 09:32:07,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736948874] [2022-01-19 09:32:07,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:32:07,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-19 09:32:07,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:32:07,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-19 09:32:07,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-01-19 09:32:07,161 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 158 [2022-01-19 09:32:07,163 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 137 transitions, 338 flow. Second operand has 16 states, 16 states have (on average 93.75) internal successors, (1500), 16 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:07,163 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:32:07,163 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 158 [2022-01-19 09:32:07,163 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:32:07,717 INFO L129 PetriNetUnfolder]: 885/3002 cut-off events. [2022-01-19 09:32:07,717 INFO L130 PetriNetUnfolder]: For 204/204 co-relation queries the response was YES. [2022-01-19 09:32:07,726 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5228 conditions, 3002 events. 885/3002 cut-off events. For 204/204 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 21441 event pairs, 197 based on Foata normal form. 0/2782 useless extension candidates. Maximal degree in co-relation 2591. Up to 545 conditions per place. [2022-01-19 09:32:07,737 INFO L132 encePairwiseOnDemand]: 140/158 looper letters, 120 selfloop transitions, 23 changer transitions 4/230 dead transitions. [2022-01-19 09:32:07,737 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 230 transitions, 858 flow [2022-01-19 09:32:07,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-19 09:32:07,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-01-19 09:32:07,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1510 transitions. [2022-01-19 09:32:07,741 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6371308016877637 [2022-01-19 09:32:07,741 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1510 transitions. [2022-01-19 09:32:07,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1510 transitions. [2022-01-19 09:32:07,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:32:07,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1510 transitions. [2022-01-19 09:32:07,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 100.66666666666667) internal successors, (1510), 15 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:07,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 158.0) internal successors, (2528), 16 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:07,749 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 158.0) internal successors, (2528), 16 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:07,749 INFO L186 Difference]: Start difference. First operand has 148 places, 137 transitions, 338 flow. Second operand 15 states and 1510 transitions. [2022-01-19 09:32:07,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 230 transitions, 858 flow [2022-01-19 09:32:07,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 230 transitions, 843 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-01-19 09:32:07,754 INFO L242 Difference]: Finished difference. Result has 163 places, 153 transitions, 464 flow [2022-01-19 09:32:07,754 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=464, PETRI_PLACES=163, PETRI_TRANSITIONS=153} [2022-01-19 09:32:07,755 INFO L334 CegarLoopForPetriNet]: 142 programPoint places, 21 predicate places. [2022-01-19 09:32:07,755 INFO L470 AbstractCegarLoop]: Abstraction has has 163 places, 153 transitions, 464 flow [2022-01-19 09:32:07,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 93.75) internal successors, (1500), 16 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:07,756 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:32:07,756 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 09:32:07,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-19 09:32:07,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:32:07,979 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-19 09:32:07,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:32:07,980 INFO L85 PathProgramCache]: Analyzing trace with hash -2021703457, now seen corresponding path program 1 times [2022-01-19 09:32:07,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:32:07,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092332331] [2022-01-19 09:32:07,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:32:07,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:32:07,999 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-19 09:32:07,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [111107853] [2022-01-19 09:32:08,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:32:08,000 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:32:08,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:32:08,001 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 09:32:08,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-19 09:32:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:32:08,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-19 09:32:08,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 09:32:08,255 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 09:32:08,255 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 09:32:08,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:32:08,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092332331] [2022-01-19 09:32:08,255 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-19 09:32:08,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111107853] [2022-01-19 09:32:08,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111107853] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 09:32:08,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 09:32:08,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 09:32:08,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772081582] [2022-01-19 09:32:08,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:32:08,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 09:32:08,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:32:08,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 09:32:08,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 09:32:08,257 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 158 [2022-01-19 09:32:08,258 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 153 transitions, 464 flow. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:08,258 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:32:08,258 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 158 [2022-01-19 09:32:08,258 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:32:08,344 INFO L129 PetriNetUnfolder]: 39/483 cut-off events. [2022-01-19 09:32:08,344 INFO L130 PetriNetUnfolder]: For 123/124 co-relation queries the response was YES. [2022-01-19 09:32:08,345 INFO L84 FinitePrefix]: Finished finitePrefix Result has 766 conditions, 483 events. 39/483 cut-off events. For 123/124 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1549 event pairs, 7 based on Foata normal form. 1/466 useless extension candidates. Maximal degree in co-relation 623. Up to 32 conditions per place. [2022-01-19 09:32:08,347 INFO L132 encePairwiseOnDemand]: 152/158 looper letters, 9 selfloop transitions, 5 changer transitions 0/151 dead transitions. [2022-01-19 09:32:08,347 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 151 transitions, 484 flow [2022-01-19 09:32:08,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 09:32:08,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 09:32:08,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 433 transitions. [2022-01-19 09:32:08,348 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9135021097046413 [2022-01-19 09:32:08,349 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 433 transitions. [2022-01-19 09:32:08,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 433 transitions. [2022-01-19 09:32:08,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:32:08,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 433 transitions. [2022-01-19 09:32:08,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:08,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:08,351 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:08,351 INFO L186 Difference]: Start difference. First operand has 163 places, 153 transitions, 464 flow. Second operand 3 states and 433 transitions. [2022-01-19 09:32:08,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 151 transitions, 484 flow [2022-01-19 09:32:08,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 151 transitions, 465 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-01-19 09:32:08,355 INFO L242 Difference]: Finished difference. Result has 161 places, 149 transitions, 450 flow [2022-01-19 09:32:08,355 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=450, PETRI_PLACES=161, PETRI_TRANSITIONS=149} [2022-01-19 09:32:08,356 INFO L334 CegarLoopForPetriNet]: 142 programPoint places, 19 predicate places. [2022-01-19 09:32:08,356 INFO L470 AbstractCegarLoop]: Abstraction has has 161 places, 149 transitions, 450 flow [2022-01-19 09:32:08,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:08,356 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:32:08,357 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 09:32:08,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-19 09:32:08,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:32:08,579 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-19 09:32:08,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:32:08,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1952781966, now seen corresponding path program 1 times [2022-01-19 09:32:08,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:32:08,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563828125] [2022-01-19 09:32:08,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:32:08,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:32:08,596 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-19 09:32:08,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [784412246] [2022-01-19 09:32:08,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:32:08,596 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:32:08,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:32:08,598 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 09:32:08,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-19 09:32:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:32:08,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-19 09:32:08,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 09:32:08,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 09:32:08,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 09:32:09,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 09:32:09,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:32:09,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563828125] [2022-01-19 09:32:09,102 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-19 09:32:09,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784412246] [2022-01-19 09:32:09,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784412246] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 09:32:09,102 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-19 09:32:09,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-01-19 09:32:09,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738963141] [2022-01-19 09:32:09,103 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-19 09:32:09,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 09:32:09,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:32:09,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 09:32:09,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-01-19 09:32:09,106 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 158 [2022-01-19 09:32:09,107 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 149 transitions, 450 flow. Second operand has 8 states, 8 states have (on average 137.875) internal successors, (1103), 8 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:09,107 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:32:09,107 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 158 [2022-01-19 09:32:09,107 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:32:09,238 INFO L129 PetriNetUnfolder]: 75/697 cut-off events. [2022-01-19 09:32:09,238 INFO L130 PetriNetUnfolder]: For 235/260 co-relation queries the response was YES. [2022-01-19 09:32:09,241 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1271 conditions, 697 events. 75/697 cut-off events. For 235/260 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2969 event pairs, 17 based on Foata normal form. 24/703 useless extension candidates. Maximal degree in co-relation 1088. Up to 52 conditions per place. [2022-01-19 09:32:09,243 INFO L132 encePairwiseOnDemand]: 152/158 looper letters, 28 selfloop transitions, 14 changer transitions 0/171 dead transitions. [2022-01-19 09:32:09,243 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 171 transitions, 611 flow [2022-01-19 09:32:09,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 09:32:09,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 09:32:09,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1252 transitions. [2022-01-19 09:32:09,246 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8804500703234881 [2022-01-19 09:32:09,246 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1252 transitions. [2022-01-19 09:32:09,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1252 transitions. [2022-01-19 09:32:09,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:32:09,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1252 transitions. [2022-01-19 09:32:09,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 139.11111111111111) internal successors, (1252), 9 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:09,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 158.0) internal successors, (1580), 10 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:09,252 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 158.0) internal successors, (1580), 10 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:09,252 INFO L186 Difference]: Start difference. First operand has 161 places, 149 transitions, 450 flow. Second operand 9 states and 1252 transitions. [2022-01-19 09:32:09,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 171 transitions, 611 flow [2022-01-19 09:32:09,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 171 transitions, 601 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 09:32:09,260 INFO L242 Difference]: Finished difference. Result has 170 places, 157 transitions, 520 flow [2022-01-19 09:32:09,261 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=520, PETRI_PLACES=170, PETRI_TRANSITIONS=157} [2022-01-19 09:32:09,262 INFO L334 CegarLoopForPetriNet]: 142 programPoint places, 28 predicate places. [2022-01-19 09:32:09,262 INFO L470 AbstractCegarLoop]: Abstraction has has 170 places, 157 transitions, 520 flow [2022-01-19 09:32:09,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 137.875) internal successors, (1103), 8 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:09,262 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:32:09,263 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 09:32:09,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-19 09:32:09,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-19 09:32:09,487 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-19 09:32:09,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:32:09,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1985769086, now seen corresponding path program 1 times [2022-01-19 09:32:09,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:32:09,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790838158] [2022-01-19 09:32:09,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:32:09,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:32:09,503 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-19 09:32:09,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [118510398] [2022-01-19 09:32:09,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:32:09,503 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:32:09,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:32:09,504 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 09:32:09,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-19 09:32:09,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:32:09,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-19 09:32:09,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 09:32:09,815 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 09:32:09,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 09:32:10,013 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 09:32:10,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:32:10,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790838158] [2022-01-19 09:32:10,013 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-19 09:32:10,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118510398] [2022-01-19 09:32:10,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118510398] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 09:32:10,013 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-19 09:32:10,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-01-19 09:32:10,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556355503] [2022-01-19 09:32:10,014 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-19 09:32:10,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-19 09:32:10,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:32:10,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-19 09:32:10,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-01-19 09:32:10,017 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 158 [2022-01-19 09:32:10,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 157 transitions, 520 flow. Second operand has 15 states, 15 states have (on average 137.53333333333333) internal successors, (2063), 15 states have internal predecessors, (2063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:10,019 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:32:10,019 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 158 [2022-01-19 09:32:10,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:32:10,353 INFO L129 PetriNetUnfolder]: 164/1534 cut-off events. [2022-01-19 09:32:10,353 INFO L130 PetriNetUnfolder]: For 687/721 co-relation queries the response was YES. [2022-01-19 09:32:10,361 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3070 conditions, 1534 events. 164/1534 cut-off events. For 687/721 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 8948 event pairs, 31 based on Foata normal form. 49/1535 useless extension candidates. Maximal degree in co-relation 2537. Up to 107 conditions per place. [2022-01-19 09:32:10,365 INFO L132 encePairwiseOnDemand]: 152/158 looper letters, 56 selfloop transitions, 30 changer transitions 0/215 dead transitions. [2022-01-19 09:32:10,365 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 215 transitions, 969 flow [2022-01-19 09:32:10,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 09:32:10,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 09:32:10,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2914 transitions. [2022-01-19 09:32:10,372 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8782399035563593 [2022-01-19 09:32:10,372 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2914 transitions. [2022-01-19 09:32:10,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2914 transitions. [2022-01-19 09:32:10,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:32:10,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2914 transitions. [2022-01-19 09:32:10,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 138.76190476190476) internal successors, (2914), 21 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:10,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 158.0) internal successors, (3476), 22 states have internal predecessors, (3476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:10,386 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 158.0) internal successors, (3476), 22 states have internal predecessors, (3476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:10,386 INFO L186 Difference]: Start difference. First operand has 170 places, 157 transitions, 520 flow. Second operand 21 states and 2914 transitions. [2022-01-19 09:32:10,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 215 transitions, 969 flow [2022-01-19 09:32:10,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 215 transitions, 955 flow, removed 7 selfloop flow, removed 0 redundant places. [2022-01-19 09:32:10,393 INFO L242 Difference]: Finished difference. Result has 195 places, 174 transitions, 720 flow [2022-01-19 09:32:10,394 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=720, PETRI_PLACES=195, PETRI_TRANSITIONS=174} [2022-01-19 09:32:10,394 INFO L334 CegarLoopForPetriNet]: 142 programPoint places, 53 predicate places. [2022-01-19 09:32:10,394 INFO L470 AbstractCegarLoop]: Abstraction has has 195 places, 174 transitions, 720 flow [2022-01-19 09:32:10,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 137.53333333333333) internal successors, (2063), 15 states have internal predecessors, (2063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:32:10,395 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:32:10,395 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 09:32:10,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-19 09:32:10,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:32:10,618 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-19 09:32:10,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:32:10,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1197382044, now seen corresponding path program 1 times [2022-01-19 09:32:10,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:32:10,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863592341] [2022-01-19 09:32:10,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:32:10,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:32:10,637 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-19 09:32:10,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1420072720] [2022-01-19 09:32:10,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:32:10,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:32:10,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:32:10,655 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 09:32:10,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-19 09:32:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:32:11,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-19 09:32:11,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 09:33:35,392 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 09:33:35,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 09:33:56,846 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 09:33:56,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:33:56,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863592341] [2022-01-19 09:33:56,847 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-19 09:33:56,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420072720] [2022-01-19 09:33:56,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420072720] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 09:33:56,847 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-19 09:33:56,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 22 [2022-01-19 09:33:56,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669730361] [2022-01-19 09:33:56,847 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-19 09:33:56,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-19 09:33:56,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:33:56,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-19 09:33:56,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=368, Unknown=2, NotChecked=0, Total=462 [2022-01-19 09:33:56,851 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 158 [2022-01-19 09:33:56,853 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 174 transitions, 720 flow. Second operand has 22 states, 22 states have (on average 126.31818181818181) internal successors, (2779), 22 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:33:56,853 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:33:56,853 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 158 [2022-01-19 09:33:56,853 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:34:07,699 WARN L228 SmtUtils]: Spent 8.50s on a formula simplification. DAG size of input: 48 DAG size of output: 46 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-19 09:34:17,612 WARN L228 SmtUtils]: Spent 8.23s on a formula simplification. DAG size of input: 51 DAG size of output: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-19 09:34:28,732 WARN L228 SmtUtils]: Spent 9.74s on a formula simplification. DAG size of input: 53 DAG size of output: 51 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-19 09:34:30,956 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-19 09:34:33,271 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-19 09:34:35,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-19 09:34:37,687 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-19 09:34:50,822 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-19 09:34:53,041 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-19 09:34:55,240 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-19 09:34:57,433 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-19 09:34:59,639 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-19 09:35:01,884 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-19 09:35:04,011 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-19 09:35:08,818 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-19 09:35:10,952 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-19 09:35:13,142 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-19 09:35:15,265 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-19 09:35:17,463 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-19 09:35:19,585 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-19 09:35:21,706 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-19 09:35:34,096 WARN L228 SmtUtils]: Spent 7.30s on a formula simplification. DAG size of input: 32 DAG size of output: 27 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-19 09:35:36,314 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (mod (+ c_~next~0 1) 4294967296)) (.cse0 (mod c_~buffer_size~0 4294967296))) (let ((.cse3 (mod .cse4 .cse0))) (let ((.cse2 (mod .cse3 4294967296))) (let ((.cse1 (< 0 .cse2))) (and (< (mod c_~first~0 4294967296) .cse0) (< (mod (+ |c_t2Thread1of1ForFork1_removeLogElement_#t~post1#1| 1) 4294967296) .cse0) (= |c_ULTIMATE.start_initLog_~max#1| 10) .cse1 (or (not (< .cse2 .cse0)) (and (< 0 (mod (mod (mod (+ .cse3 1) 4294967296) .cse0) 4294967296)) (< .cse4 .cse0)) (not .cse1)) (= c_~buffer_size~0 10) (< 0 (mod c_~next~0 4294967296)) (= |c_ULTIMATE.start_initLog_#in~max#1| 10)))))) is different from false [2022-01-19 09:35:38,718 INFO L129 PetriNetUnfolder]: 185/2378 cut-off events. [2022-01-19 09:35:38,718 INFO L130 PetriNetUnfolder]: For 1127/1141 co-relation queries the response was YES. [2022-01-19 09:35:38,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4678 conditions, 2378 events. 185/2378 cut-off events. For 1127/1141 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 14481 event pairs, 41 based on Foata normal form. 23/2311 useless extension candidates. Maximal degree in co-relation 4609. Up to 166 conditions per place. [2022-01-19 09:35:38,736 INFO L132 encePairwiseOnDemand]: 144/158 looper letters, 42 selfloop transitions, 19 changer transitions 2/207 dead transitions. [2022-01-19 09:35:38,736 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 207 transitions, 978 flow [2022-01-19 09:35:38,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 09:35:38,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 09:35:38,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2294 transitions. [2022-01-19 09:35:38,741 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8066104078762306 [2022-01-19 09:35:38,741 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2294 transitions. [2022-01-19 09:35:38,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2294 transitions. [2022-01-19 09:35:38,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:35:38,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2294 transitions. [2022-01-19 09:35:38,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 127.44444444444444) internal successors, (2294), 18 states have internal predecessors, (2294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:35:38,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 158.0) internal successors, (3002), 19 states have internal predecessors, (3002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:35:38,750 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 158.0) internal successors, (3002), 19 states have internal predecessors, (3002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:35:38,750 INFO L186 Difference]: Start difference. First operand has 195 places, 174 transitions, 720 flow. Second operand 18 states and 2294 transitions. [2022-01-19 09:35:38,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 207 transitions, 978 flow [2022-01-19 09:35:38,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 207 transitions, 938 flow, removed 10 selfloop flow, removed 6 redundant places. [2022-01-19 09:35:38,761 INFO L242 Difference]: Finished difference. Result has 210 places, 183 transitions, 773 flow [2022-01-19 09:35:38,761 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=773, PETRI_PLACES=210, PETRI_TRANSITIONS=183} [2022-01-19 09:35:38,762 INFO L334 CegarLoopForPetriNet]: 142 programPoint places, 68 predicate places. [2022-01-19 09:35:38,762 INFO L470 AbstractCegarLoop]: Abstraction has has 210 places, 183 transitions, 773 flow [2022-01-19 09:35:38,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 126.31818181818181) internal successors, (2779), 22 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:35:38,763 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:35:38,763 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 09:35:38,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-19 09:35:38,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-19 09:35:38,979 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-19 09:35:38,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:35:38,980 INFO L85 PathProgramCache]: Analyzing trace with hash -2037958642, now seen corresponding path program 1 times [2022-01-19 09:35:38,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:35:38,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958558639] [2022-01-19 09:35:38,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:35:38,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:35:39,002 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-19 09:35:39,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1617524135] [2022-01-19 09:35:39,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:35:39,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:35:39,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:35:39,006 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 09:35:39,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-19 09:35:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:35:39,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-19 09:35:39,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 09:36:19,756 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 57 [2022-01-19 09:36:19,762 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 60 [2022-01-19 09:36:19,775 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 13 [2022-01-19 09:36:37,526 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-01-19 09:36:42,029 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 09:36:42,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 09:36:57,956 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-01-19 09:36:57,969 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 09:36:57,969 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 44 [2022-01-19 09:36:58,001 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 10 [2022-01-19 09:36:58,042 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2022-01-19 09:36:58,089 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 20 [2022-01-19 09:36:58,213 INFO L353 Elim1Store]: treesize reduction 78, result has 24.3 percent of original size [2022-01-19 09:36:58,213 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 130 treesize of output 115 [2022-01-19 09:38:32,732 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 09:38:32,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:38:32,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958558639] [2022-01-19 09:38:32,733 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-19 09:38:32,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617524135] [2022-01-19 09:38:32,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617524135] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 09:38:32,733 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-19 09:38:32,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23] total 46 [2022-01-19 09:38:32,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910204349] [2022-01-19 09:38:32,733 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-19 09:38:32,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-19 09:38:32,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:38:32,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-19 09:38:32,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1848, Unknown=24, NotChecked=0, Total=2070 [2022-01-19 09:38:32,737 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 158 [2022-01-19 09:38:32,740 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 183 transitions, 773 flow. Second operand has 46 states, 46 states have (on average 80.34782608695652) internal successors, (3696), 46 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:38:32,740 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:38:32,740 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 158 [2022-01-19 09:38:32,740 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:38:34,913 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-19 09:38:37,103 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-19 09:38:44,476 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-19 09:38:46,680 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-19 09:38:48,869 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-19 09:38:50,991 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-19 09:38:53,210 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-19 09:38:55,509 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-19 09:38:57,665 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-19 09:38:59,925 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-19 09:39:02,921 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-19 09:39:05,144 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-19 09:39:08,145 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-19 09:39:10,357 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-19 09:40:32,904 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_~next~0 4294967296)) (.cse11 (mod (+ c_~first~0 1) 4294967296)) (.cse7 (mod c_~first~0 4294967296)) (.cse8 (mod |c_t1Thread1of1ForFork0_~i~0#1| 256))) (let ((.cse9 (<= .cse8 127)) (.cse6 (select |c_#memory_int| |c_~#buffer~0.base|)) (.cse5 (<= .cse7 2147483647)) (.cse4 (= .cse0 .cse11))) (and (or (not (< 0 .cse0)) (let ((.cse2 (+ |c_t1Thread1of1ForFork0_#t~post3#1| 1))) (let ((.cse1 (mod .cse2 256))) (let ((.cse3 (<= .cse1 127))) (and (or (= (+ .cse1 (- 256)) .cse2) .cse3) .cse4 (or (= .cse1 .cse2) (not .cse3))))))) (or .cse5 (= c_~value~0 (select .cse6 (+ |c_~#buffer~0.offset| .cse7 (- 4294967296))))) (or (= .cse8 |c_t1Thread1of1ForFork0_~i~0#1|) (not .cse9)) (or (= (+ .cse8 (- 256)) |c_t1Thread1of1ForFork0_~i~0#1|) .cse9) (or (= c_~value~0 (select .cse6 (+ |c_~#buffer~0.offset| .cse7))) (not .cse5)) (let ((.cse10 (mod c_~buffer_size~0 4294967296))) (let ((.cse12 (mod (mod (mod (+ c_~next~0 1) 4294967296) .cse10) 4294967296))) (or (<= .cse10 .cse0) (= (mod c_~send~0 256) 0) (let ((.cse14 (+ |c_t1Thread1of1ForFork0_~i~0#1| 1))) (let ((.cse15 (mod .cse14 256))) (let ((.cse13 (<= .cse15 127))) (and (= .cse11 .cse12) (or .cse13 (= .cse14 (+ (- 256) .cse15))) (or (not .cse13) (= .cse14 .cse15)))))) (<= .cse12 0)))) .cse4 (= |c_ULTIMATE.start_initLog_~max#1| 10) (= c_~buffer_size~0 10) (= |c_ULTIMATE.start_initLog_#in~max#1| 10)))) is different from false [2022-01-19 09:40:44,066 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_~next~0 4294967296)) (.cse8 (mod (+ c_~first~0 1) 4294967296)) (.cse5 (mod |c_t1Thread1of1ForFork0_~i~0#1| 256))) (let ((.cse6 (<= .cse5 127)) (.cse4 (= .cse0 .cse8))) (and (or (not (< 0 .cse0)) (let ((.cse2 (+ |c_t1Thread1of1ForFork0_#t~post3#1| 1))) (let ((.cse1 (mod .cse2 256))) (let ((.cse3 (<= .cse1 127))) (and (or (= (+ .cse1 (- 256)) .cse2) .cse3) .cse4 (or (= .cse1 .cse2) (not .cse3))))))) (or (= .cse5 |c_t1Thread1of1ForFork0_~i~0#1|) (not .cse6)) (or (= (+ .cse5 (- 256)) |c_t1Thread1of1ForFork0_~i~0#1|) .cse6) (let ((.cse7 (mod c_~buffer_size~0 4294967296))) (let ((.cse9 (mod (mod (mod (+ c_~next~0 1) 4294967296) .cse7) 4294967296))) (or (<= .cse7 .cse0) (= (mod c_~send~0 256) 0) (let ((.cse11 (+ |c_t1Thread1of1ForFork0_~i~0#1| 1))) (let ((.cse12 (mod .cse11 256))) (let ((.cse10 (<= .cse12 127))) (and (= .cse8 .cse9) (or .cse10 (= .cse11 (+ (- 256) .cse12))) (or (not .cse10) (= .cse11 .cse12)))))) (<= .cse9 0)))) .cse4 (= |c_ULTIMATE.start_initLog_~max#1| 10) (= c_~buffer_size~0 10) (= |c_ULTIMATE.start_initLog_#in~max#1| 10)))) is different from false [2022-01-19 09:40:59,883 WARN L228 SmtUtils]: Spent 8.95s on a formula simplification. DAG size of input: 91 DAG size of output: 43 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-19 09:44:39,938 WARN L228 SmtUtils]: Spent 2.56m on a formula simplification. DAG size of input: 86 DAG size of output: 68 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-19 09:44:46,739 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (mod |c_t1Thread1of1ForFork0_~i~0#1| 256))) (let ((.cse2 (<= .cse1 127)) (.cse0 (mod c_~next~0 4294967296))) (and (= .cse0 (mod c_~first~0 4294967296)) (or (= .cse1 |c_t1Thread1of1ForFork0_~i~0#1|) (not .cse2)) (let ((.cse4 (mod c_~buffer_size~0 4294967296))) (let ((.cse3 (mod (mod (mod (+ c_~next~0 1) 4294967296) .cse4) 4294967296))) (or (not (< .cse3 .cse4)) (let ((.cse6 (+ |c_t1Thread1of1ForFork0_~i~0#1| 1))) (let ((.cse7 (mod .cse6 256))) (let ((.cse5 (<= .cse7 127))) (and (= (mod (+ c_~first~0 1) 4294967296) .cse3) (or .cse5 (= .cse6 (+ (- 256) .cse7))) (or (not .cse5) (= .cse6 .cse7)))))) (not (< 0 .cse3))))) (or (= (+ .cse1 (- 256)) |c_t1Thread1of1ForFork0_~i~0#1|) .cse2) (= |c_ULTIMATE.start_initLog_~max#1| 10) (= c_~buffer_size~0 10) (= .cse0 (mod (+ |c_t2Thread1of1ForFork1_removeLogElement_#t~post1#1| 1) 4294967296)) (= |c_ULTIMATE.start_initLog_#in~max#1| 10)))) is different from false [2022-01-19 09:44:57,976 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-19 09:45:00,111 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-19 09:45:02,251 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-19 09:45:04,373 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-19 09:45:06,529 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-19 09:45:08,658 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-19 09:45:10,830 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-19 09:45:12,954 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-19 09:45:15,123 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] Received shutdown request... [2022-01-19 09:46:35,980 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 09:46:35,980 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 09:46:36,445 WARN L244 SmtUtils]: Removed 3 from assertion stack [2022-01-19 09:46:36,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-19 09:46:36,446 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2022-01-19 09:46:36,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-01-19 09:46:36,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-19 09:46:36,647 WARN L594 AbstractCegarLoop]: Verification canceled: while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 71 for 39939ms.. [2022-01-19 09:46:36,648 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (6 of 8 remaining) [2022-01-19 09:46:36,648 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (5 of 8 remaining) [2022-01-19 09:46:36,648 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2022-01-19 09:46:36,648 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2022-01-19 09:46:36,649 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2022-01-19 09:46:36,649 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 8 remaining) [2022-01-19 09:46:36,649 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 8 remaining) [2022-01-19 09:46:36,651 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 09:46:36,654 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 09:46:36,654 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 09:46:36,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 09:46:36 BasicIcfg [2022-01-19 09:46:36,656 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 09:46:36,657 INFO L158 Benchmark]: Toolchain (without parser) took 876866.13ms. Allocated memory was 341.8MB in the beginning and 536.9MB in the end (delta: 195.0MB). Free memory was 285.8MB in the beginning and 406.3MB in the end (delta: -120.4MB). Peak memory consumption was 75.3MB. Max. memory is 16.0GB. [2022-01-19 09:46:36,657 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 341.8MB. Free memory is still 303.3MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 09:46:36,657 INFO L158 Benchmark]: CACSL2BoogieTranslator took 466.15ms. Allocated memory was 341.8MB in the beginning and 446.7MB in the end (delta: 104.9MB). Free memory was 285.5MB in the beginning and 407.7MB in the end (delta: -122.2MB). Peak memory consumption was 11.3MB. Max. memory is 16.0GB. [2022-01-19 09:46:36,657 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.45ms. Allocated memory is still 446.7MB. Free memory was 407.7MB in the beginning and 404.8MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2022-01-19 09:46:36,657 INFO L158 Benchmark]: Boogie Preprocessor took 39.40ms. Allocated memory is still 446.7MB. Free memory was 404.8MB in the beginning and 403.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 09:46:36,658 INFO L158 Benchmark]: RCFGBuilder took 507.64ms. Allocated memory is still 446.7MB. Free memory was 403.5MB in the beginning and 387.3MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2022-01-19 09:46:36,658 INFO L158 Benchmark]: TraceAbstraction took 875782.45ms. Allocated memory was 446.7MB in the beginning and 536.9MB in the end (delta: 90.2MB). Free memory was 386.7MB in the beginning and 406.3MB in the end (delta: -19.5MB). Peak memory consumption was 73.3MB. Max. memory is 16.0GB. [2022-01-19 09:46:36,659 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 341.8MB. Free memory is still 303.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 466.15ms. Allocated memory was 341.8MB in the beginning and 446.7MB in the end (delta: 104.9MB). Free memory was 285.5MB in the beginning and 407.7MB in the end (delta: -122.2MB). Peak memory consumption was 11.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 64.45ms. Allocated memory is still 446.7MB. Free memory was 407.7MB in the beginning and 404.8MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 39.40ms. Allocated memory is still 446.7MB. Free memory was 404.8MB in the beginning and 403.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 507.64ms. Allocated memory is still 446.7MB. Free memory was 403.5MB in the beginning and 387.3MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 875782.45ms. Allocated memory was 446.7MB in the beginning and 536.9MB in the end (delta: 90.2MB). Free memory was 386.7MB in the beginning and 406.3MB in the end (delta: -19.5MB). Peak memory consumption was 73.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 749]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 71 for 39939ms.. - TimeoutResultAtElement [Line: 763]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 71 for 39939ms.. - TimeoutResultAtElement [Line: 764]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 71 for 39939ms.. - TimeoutResultAtElement [Line: 714]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 71 for 39939ms.. - TimeoutResultAtElement [Line: 731]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 71 for 39939ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 226 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 875.6s, OverallIterations: 13, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 587.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 41 mSolverCounterUnknown, 1359 SdHoareTripleChecker+Valid, 94.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1359 mSDsluCounter, 1322 SdHoareTripleChecker+Invalid, 88.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 246 IncrementalHoareTripleChecker+Unchecked, 1463 mSDsCounter, 229 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2461 IncrementalHoareTripleChecker+Invalid, 2977 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 229 mSolverCounterUnsat, 165 mSDtfsCounter, 2461 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1837 GetRequests, 1631 SyntacticMatches, 3 SemanticMatches, 202 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1556 ImplicationChecksByTransitivity, 555.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=773occurred in iteration=12, InterpolantAutomatonStates: 100, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 282.8s InterpolantComputationTime, 1337 NumberOfCodeBlocks, 1337 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 1869 ConstructedInterpolants, 7 QuantifiedInterpolants, 16766 SizeOfPredicates, 65 NumberOfNonLiveVariables, 3118 ConjunctsInSsa, 152 ConjunctsInUnsatCore, 17 InterpolantComputations, 9 PerfectInterpolantSequences, 27/227 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown