/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-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 23:54:15,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 23:54:15,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 23:54:15,664 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 23:54:15,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 23:54:15,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 23:54:15,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 23:54:15,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 23:54:15,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 23:54:15,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 23:54:15,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 23:54:15,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 23:54:15,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 23:54:15,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 23:54:15,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 23:54:15,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 23:54:15,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 23:54:15,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 23:54:15,689 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 23:54:15,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 23:54:15,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 23:54:15,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 23:54:15,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 23:54:15,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 23:54:15,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 23:54:15,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 23:54:15,705 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 23:54:15,706 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 23:54:15,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 23:54:15,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 23:54:15,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 23:54:15,708 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 23:54:15,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 23:54:15,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 23:54:15,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 23:54:15,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 23:54:15,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 23:54:15,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 23:54:15,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 23:54:15,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 23:54:15,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 23:54:15,714 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-VariableLbe.epf [2023-01-27 23:54:15,739 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 23:54:15,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 23:54:15,741 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 23:54:15,741 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 23:54:15,742 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 23:54:15,742 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 23:54:15,742 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 23:54:15,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 23:54:15,743 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 23:54:15,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 23:54:15,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 23:54:15,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 23:54:15,744 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 23:54:15,744 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 23:54:15,744 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 23:54:15,744 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 23:54:15,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 23:54:15,745 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 23:54:15,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 23:54:15,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 23:54:15,745 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 23:54:15,745 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 23:54:15,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 23:54:15,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:54:15,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 23:54:15,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 23:54:15,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 23:54:15,746 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 23:54:15,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 23:54:15,747 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 23:54:15,747 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 23:54:15,747 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-27 23:54:15,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 23:54:15,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 23:54:15,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 23:54:15,977 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 23:54:15,978 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 23:54:15,978 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/lamport.i [2023-01-27 23:54:17,025 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 23:54:17,253 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 23:54:17,253 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i [2023-01-27 23:54:17,271 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06018fdd3/0f281fa487ad4a69a66561137b62544e/FLAG8d32d4bf1 [2023-01-27 23:54:17,285 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06018fdd3/0f281fa487ad4a69a66561137b62544e [2023-01-27 23:54:17,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 23:54:17,289 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 23:54:17,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 23:54:17,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 23:54:17,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 23:54:17,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:54:17" (1/1) ... [2023-01-27 23:54:17,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31fd5593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:17, skipping insertion in model container [2023-01-27 23:54:17,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:54:17" (1/1) ... [2023-01-27 23:54:17,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 23:54:17,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 23:54:17,516 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-01-27 23:54:17,642 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i[32156,32169] [2023-01-27 23:54:17,652 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i[34083,34096] [2023-01-27 23:54:17,659 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:54:17,667 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 23:54:17,693 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-01-27 23:54:17,725 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i[32156,32169] [2023-01-27 23:54:17,735 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i[34083,34096] [2023-01-27 23:54:17,737 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:54:17,765 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 23:54:17,766 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 23:54:17,766 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 23:54:17,771 INFO L208 MainTranslator]: Completed translation [2023-01-27 23:54:17,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:17 WrapperNode [2023-01-27 23:54:17,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 23:54:17,773 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 23:54:17,773 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 23:54:17,773 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 23:54:17,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:17" (1/1) ... [2023-01-27 23:54:17,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:17" (1/1) ... [2023-01-27 23:54:17,824 INFO L138 Inliner]: procedures = 171, calls = 83, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2023-01-27 23:54:17,824 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 23:54:17,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 23:54:17,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 23:54:17,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 23:54:17,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:17" (1/1) ... [2023-01-27 23:54:17,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:17" (1/1) ... [2023-01-27 23:54:17,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:17" (1/1) ... [2023-01-27 23:54:17,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:17" (1/1) ... [2023-01-27 23:54:17,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:17" (1/1) ... [2023-01-27 23:54:17,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:17" (1/1) ... [2023-01-27 23:54:17,869 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:17" (1/1) ... [2023-01-27 23:54:17,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:17" (1/1) ... [2023-01-27 23:54:17,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 23:54:17,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 23:54:17,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 23:54:17,873 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 23:54:17,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:17" (1/1) ... [2023-01-27 23:54:17,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:54:17,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:54:17,906 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) [2023-01-27 23:54:17,917 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 [2023-01-27 23:54:17,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 23:54:17,946 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-01-27 23:54:17,946 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-01-27 23:54:17,946 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-01-27 23:54:17,946 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-01-27 23:54:17,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 23:54:17,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 23:54:17,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 23:54:17,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 23:54:17,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 23:54:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 23:54:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 23:54:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 23:54:17,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 23:54:17,948 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 23:54:18,103 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 23:54:18,105 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 23:54:18,306 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 23:54:18,312 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 23:54:18,312 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-01-27 23:54:18,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:54:18 BoogieIcfgContainer [2023-01-27 23:54:18,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 23:54:18,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 23:54:18,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 23:54:18,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 23:54:18,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 11:54:17" (1/3) ... [2023-01-27 23:54:18,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c51eb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:54:18, skipping insertion in model container [2023-01-27 23:54:18,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:54:17" (2/3) ... [2023-01-27 23:54:18,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c51eb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:54:18, skipping insertion in model container [2023-01-27 23:54:18,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:54:18" (3/3) ... [2023-01-27 23:54:18,321 INFO L112 eAbstractionObserver]: Analyzing ICFG lamport.i [2023-01-27 23:54:18,335 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 23:54:18,335 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-27 23:54:18,336 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 23:54:18,433 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 23:54:18,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 129 transitions, 274 flow [2023-01-27 23:54:18,538 INFO L130 PetriNetUnfolder]: 24/127 cut-off events. [2023-01-27 23:54:18,538 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:54:18,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 127 events. 24/127 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 253 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 97. Up to 5 conditions per place. [2023-01-27 23:54:18,543 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 129 transitions, 274 flow [2023-01-27 23:54:18,549 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 118 transitions, 245 flow [2023-01-27 23:54:18,552 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 23:54:18,565 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 118 transitions, 245 flow [2023-01-27 23:54:18,568 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 118 transitions, 245 flow [2023-01-27 23:54:18,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 118 transitions, 245 flow [2023-01-27 23:54:18,599 INFO L130 PetriNetUnfolder]: 24/118 cut-off events. [2023-01-27 23:54:18,600 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 23:54:18,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 118 events. 24/118 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 249 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 97. Up to 5 conditions per place. [2023-01-27 23:54:18,605 INFO L119 LiptonReduction]: Number of co-enabled transitions 4988 [2023-01-27 23:54:20,181 INFO L134 LiptonReduction]: Checked pairs total: 14233 [2023-01-27 23:54:20,181 INFO L136 LiptonReduction]: Total number of compositions: 69 [2023-01-27 23:54:20,195 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 23:54:20,200 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@659f0c1e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 23:54:20,200 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-01-27 23:54:20,203 INFO L130 PetriNetUnfolder]: 2/10 cut-off events. [2023-01-27 23:54:20,203 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 23:54:20,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:54:20,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-01-27 23:54:20,204 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 23:54:20,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:54:20,208 INFO L85 PathProgramCache]: Analyzing trace with hash 16739404, now seen corresponding path program 1 times [2023-01-27 23:54:20,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:54:20,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020437730] [2023-01-27 23:54:20,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:54:20,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:54:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:54:20,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:54:20,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:54:20,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020437730] [2023-01-27 23:54:20,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020437730] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:54:20,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:54:20,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 23:54:20,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279369765] [2023-01-27 23:54:20,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:54:20,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-01-27 23:54:20,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:54:20,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-01-27 23:54:20,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-01-27 23:54:20,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 198 [2023-01-27 23:54:20,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 64 transitions, 137 flow. Second operand has 2 states, 2 states have (on average 115.0) internal successors, (230), 2 states have internal predecessors, (230), 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) [2023-01-27 23:54:20,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:54:20,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 198 [2023-01-27 23:54:20,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:54:20,525 INFO L130 PetriNetUnfolder]: 832/1381 cut-off events. [2023-01-27 23:54:20,526 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2023-01-27 23:54:20,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2603 conditions, 1381 events. 832/1381 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6767 event pairs, 432 based on Foata normal form. 47/987 useless extension candidates. Maximal degree in co-relation 2454. Up to 1184 conditions per place. [2023-01-27 23:54:20,535 INFO L137 encePairwiseOnDemand]: 192/198 looper letters, 39 selfloop transitions, 0 changer transitions 0/58 dead transitions. [2023-01-27 23:54:20,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 203 flow [2023-01-27 23:54:20,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-27 23:54:20,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-01-27 23:54:20,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 271 transitions. [2023-01-27 23:54:20,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6843434343434344 [2023-01-27 23:54:20,546 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 271 transitions. [2023-01-27 23:54:20,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 271 transitions. [2023-01-27 23:54:20,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:54:20,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 271 transitions. [2023-01-27 23:54:20,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 135.5) internal successors, (271), 2 states have internal predecessors, (271), 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) [2023-01-27 23:54:20,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 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) [2023-01-27 23:54:20,555 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 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) [2023-01-27 23:54:20,556 INFO L175 Difference]: Start difference. First operand has 53 places, 64 transitions, 137 flow. Second operand 2 states and 271 transitions. [2023-01-27 23:54:20,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 203 flow [2023-01-27 23:54:20,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 198 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 23:54:20,561 INFO L231 Difference]: Finished difference. Result has 51 places, 58 transitions, 120 flow [2023-01-27 23:54:20,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=120, PETRI_PLACES=51, PETRI_TRANSITIONS=58} [2023-01-27 23:54:20,565 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -2 predicate places. [2023-01-27 23:54:20,565 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 58 transitions, 120 flow [2023-01-27 23:54:20,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 115.0) internal successors, (230), 2 states have internal predecessors, (230), 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) [2023-01-27 23:54:20,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:54:20,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:54:20,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 23:54:20,566 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 23:54:20,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:54:20,566 INFO L85 PathProgramCache]: Analyzing trace with hash -932705631, now seen corresponding path program 1 times [2023-01-27 23:54:20,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:54:20,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469297118] [2023-01-27 23:54:20,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:54:20,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:54:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:54:20,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:54:20,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:54:20,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469297118] [2023-01-27 23:54:20,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469297118] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:54:20,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:54:20,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 23:54:20,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460150982] [2023-01-27 23:54:20,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:54:20,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:54:20,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:54:20,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:54:20,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:54:20,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 198 [2023-01-27 23:54:20,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 58 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 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) [2023-01-27 23:54:20,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:54:20,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 198 [2023-01-27 23:54:20,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:54:20,805 INFO L130 PetriNetUnfolder]: 1009/1696 cut-off events. [2023-01-27 23:54:20,806 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-01-27 23:54:20,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3202 conditions, 1696 events. 1009/1696 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 8721 event pairs, 354 based on Foata normal form. 0/1158 useless extension candidates. Maximal degree in co-relation 3199. Up to 1011 conditions per place. [2023-01-27 23:54:20,813 INFO L137 encePairwiseOnDemand]: 190/198 looper letters, 58 selfloop transitions, 5 changer transitions 2/80 dead transitions. [2023-01-27 23:54:20,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 80 transitions, 295 flow [2023-01-27 23:54:20,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:54:20,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:54:20,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 386 transitions. [2023-01-27 23:54:20,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6498316498316499 [2023-01-27 23:54:20,817 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 386 transitions. [2023-01-27 23:54:20,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 386 transitions. [2023-01-27 23:54:20,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:54:20,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 386 transitions. [2023-01-27 23:54:20,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 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) [2023-01-27 23:54:20,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 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) [2023-01-27 23:54:20,821 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 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) [2023-01-27 23:54:20,821 INFO L175 Difference]: Start difference. First operand has 51 places, 58 transitions, 120 flow. Second operand 3 states and 386 transitions. [2023-01-27 23:54:20,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 80 transitions, 295 flow [2023-01-27 23:54:20,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 80 transitions, 295 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 23:54:20,823 INFO L231 Difference]: Finished difference. Result has 55 places, 60 transitions, 154 flow [2023-01-27 23:54:20,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=55, PETRI_TRANSITIONS=60} [2023-01-27 23:54:20,824 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 2 predicate places. [2023-01-27 23:54:20,824 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 60 transitions, 154 flow [2023-01-27 23:54:20,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 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) [2023-01-27 23:54:20,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:54:20,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:54:20,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 23:54:20,825 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 23:54:20,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:54:20,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1147973996, now seen corresponding path program 1 times [2023-01-27 23:54:20,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:54:20,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388232949] [2023-01-27 23:54:20,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:54:20,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:54:20,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:54:20,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:54:20,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:54:20,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388232949] [2023-01-27 23:54:20,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388232949] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:54:20,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:54:20,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 23:54:20,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878529691] [2023-01-27 23:54:20,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:54:20,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:54:20,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:54:20,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:54:20,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:54:20,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 198 [2023-01-27 23:54:20,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 60 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 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) [2023-01-27 23:54:20,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:54:20,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 198 [2023-01-27 23:54:20,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:54:21,045 INFO L130 PetriNetUnfolder]: 881/1496 cut-off events. [2023-01-27 23:54:21,045 INFO L131 PetriNetUnfolder]: For 206/206 co-relation queries the response was YES. [2023-01-27 23:54:21,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3030 conditions, 1496 events. 881/1496 cut-off events. For 206/206 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7487 event pairs, 358 based on Foata normal form. 38/1203 useless extension candidates. Maximal degree in co-relation 3025. Up to 1004 conditions per place. [2023-01-27 23:54:21,052 INFO L137 encePairwiseOnDemand]: 191/198 looper letters, 52 selfloop transitions, 4 changer transitions 6/77 dead transitions. [2023-01-27 23:54:21,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 77 transitions, 313 flow [2023-01-27 23:54:21,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:54:21,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:54:21,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2023-01-27 23:54:21,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6447811447811448 [2023-01-27 23:54:21,054 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2023-01-27 23:54:21,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2023-01-27 23:54:21,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:54:21,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2023-01-27 23:54:21,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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) [2023-01-27 23:54:21,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 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) [2023-01-27 23:54:21,057 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 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) [2023-01-27 23:54:21,058 INFO L175 Difference]: Start difference. First operand has 55 places, 60 transitions, 154 flow. Second operand 3 states and 383 transitions. [2023-01-27 23:54:21,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 77 transitions, 313 flow [2023-01-27 23:54:21,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 77 transitions, 303 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 23:54:21,062 INFO L231 Difference]: Finished difference. Result has 56 places, 58 transitions, 154 flow [2023-01-27 23:54:21,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=56, PETRI_TRANSITIONS=58} [2023-01-27 23:54:21,062 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2023-01-27 23:54:21,063 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 58 transitions, 154 flow [2023-01-27 23:54:21,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 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) [2023-01-27 23:54:21,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:54:21,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:54:21,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 23:54:21,063 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 23:54:21,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:54:21,064 INFO L85 PathProgramCache]: Analyzing trace with hash -451012777, now seen corresponding path program 1 times [2023-01-27 23:54:21,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:54:21,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969162778] [2023-01-27 23:54:21,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:54:21,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:54:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:54:21,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:54:21,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:54:21,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969162778] [2023-01-27 23:54:21,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969162778] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:54:21,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:54:21,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 23:54:21,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625786010] [2023-01-27 23:54:21,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:54:21,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:54:21,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:54:21,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:54:21,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:54:21,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 198 [2023-01-27 23:54:21,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 58 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 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) [2023-01-27 23:54:21,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:54:21,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 198 [2023-01-27 23:54:21,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:54:21,401 INFO L130 PetriNetUnfolder]: 1686/2765 cut-off events. [2023-01-27 23:54:21,402 INFO L131 PetriNetUnfolder]: For 715/715 co-relation queries the response was YES. [2023-01-27 23:54:21,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5758 conditions, 2765 events. 1686/2765 cut-off events. For 715/715 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 14372 event pairs, 462 based on Foata normal form. 0/2288 useless extension candidates. Maximal degree in co-relation 5752. Up to 1442 conditions per place. [2023-01-27 23:54:21,414 INFO L137 encePairwiseOnDemand]: 193/198 looper letters, 71 selfloop transitions, 4 changer transitions 12/98 dead transitions. [2023-01-27 23:54:21,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 98 transitions, 438 flow [2023-01-27 23:54:21,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:54:21,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:54:21,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2023-01-27 23:54:21,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6262626262626263 [2023-01-27 23:54:21,423 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2023-01-27 23:54:21,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2023-01-27 23:54:21,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:54:21,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2023-01-27 23:54:21,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 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) [2023-01-27 23:54:21,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 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) [2023-01-27 23:54:21,427 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 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) [2023-01-27 23:54:21,427 INFO L175 Difference]: Start difference. First operand has 56 places, 58 transitions, 154 flow. Second operand 3 states and 372 transitions. [2023-01-27 23:54:21,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 98 transitions, 438 flow [2023-01-27 23:54:21,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 98 transitions, 430 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 23:54:21,434 INFO L231 Difference]: Finished difference. Result has 57 places, 62 transitions, 184 flow [2023-01-27 23:54:21,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=57, PETRI_TRANSITIONS=62} [2023-01-27 23:54:21,435 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 4 predicate places. [2023-01-27 23:54:21,436 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 62 transitions, 184 flow [2023-01-27 23:54:21,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 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) [2023-01-27 23:54:21,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:54:21,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:54:21,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 23:54:21,437 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 23:54:21,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:54:21,437 INFO L85 PathProgramCache]: Analyzing trace with hash 871684335, now seen corresponding path program 2 times [2023-01-27 23:54:21,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:54:21,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813888895] [2023-01-27 23:54:21,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:54:21,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:54:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:54:21,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:54:21,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:54:21,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813888895] [2023-01-27 23:54:21,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813888895] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:54:21,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:54:21,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 23:54:21,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856325600] [2023-01-27 23:54:21,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:54:21,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 23:54:21,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:54:21,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 23:54:21,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 23:54:21,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 198 [2023-01-27 23:54:21,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 62 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 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) [2023-01-27 23:54:21,551 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:54:21,551 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 198 [2023-01-27 23:54:21,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:54:22,120 INFO L130 PetriNetUnfolder]: 4808/7901 cut-off events. [2023-01-27 23:54:22,121 INFO L131 PetriNetUnfolder]: For 1496/1502 co-relation queries the response was YES. [2023-01-27 23:54:22,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16682 conditions, 7901 events. 4808/7901 cut-off events. For 1496/1502 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 48565 event pairs, 770 based on Foata normal form. 60/6689 useless extension candidates. Maximal degree in co-relation 16675. Up to 2300 conditions per place. [2023-01-27 23:54:22,155 INFO L137 encePairwiseOnDemand]: 194/198 looper letters, 143 selfloop transitions, 6 changer transitions 1/166 dead transitions. [2023-01-27 23:54:22,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 166 transitions, 768 flow [2023-01-27 23:54:22,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 23:54:22,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 23:54:22,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 672 transitions. [2023-01-27 23:54:22,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6787878787878788 [2023-01-27 23:54:22,157 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 672 transitions. [2023-01-27 23:54:22,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 672 transitions. [2023-01-27 23:54:22,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:54:22,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 672 transitions. [2023-01-27 23:54:22,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 134.4) internal successors, (672), 5 states have internal predecessors, (672), 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) [2023-01-27 23:54:22,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 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) [2023-01-27 23:54:22,162 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 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) [2023-01-27 23:54:22,162 INFO L175 Difference]: Start difference. First operand has 57 places, 62 transitions, 184 flow. Second operand 5 states and 672 transitions. [2023-01-27 23:54:22,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 166 transitions, 768 flow [2023-01-27 23:54:22,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 166 transitions, 754 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 23:54:22,168 INFO L231 Difference]: Finished difference. Result has 63 places, 68 transitions, 228 flow [2023-01-27 23:54:22,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=228, PETRI_PLACES=63, PETRI_TRANSITIONS=68} [2023-01-27 23:54:22,169 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 10 predicate places. [2023-01-27 23:54:22,169 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 68 transitions, 228 flow [2023-01-27 23:54:22,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 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) [2023-01-27 23:54:22,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:54:22,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:54:22,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 23:54:22,170 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 23:54:22,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:54:22,171 INFO L85 PathProgramCache]: Analyzing trace with hash 617069377, now seen corresponding path program 3 times [2023-01-27 23:54:22,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:54:22,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049451667] [2023-01-27 23:54:22,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:54:22,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:54:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:54:22,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:54:22,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:54:22,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049451667] [2023-01-27 23:54:22,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049451667] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:54:22,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:54:22,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 23:54:22,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648817771] [2023-01-27 23:54:22,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:54:22,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 23:54:22,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:54:22,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 23:54:22,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 23:54:22,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 198 [2023-01-27 23:54:22,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 68 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 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) [2023-01-27 23:54:22,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:54:22,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 198 [2023-01-27 23:54:22,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:54:22,803 INFO L130 PetriNetUnfolder]: 5269/8776 cut-off events. [2023-01-27 23:54:22,804 INFO L131 PetriNetUnfolder]: For 2391/2427 co-relation queries the response was YES. [2023-01-27 23:54:22,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19146 conditions, 8776 events. 5269/8776 cut-off events. For 2391/2427 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 57280 event pairs, 1465 based on Foata normal form. 268/7859 useless extension candidates. Maximal degree in co-relation 19136. Up to 4341 conditions per place. [2023-01-27 23:54:22,835 INFO L137 encePairwiseOnDemand]: 184/198 looper letters, 85 selfloop transitions, 16 changer transitions 16/134 dead transitions. [2023-01-27 23:54:22,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 134 transitions, 639 flow [2023-01-27 23:54:22,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 23:54:22,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 23:54:22,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 559 transitions. [2023-01-27 23:54:22,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5646464646464646 [2023-01-27 23:54:22,838 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 559 transitions. [2023-01-27 23:54:22,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 559 transitions. [2023-01-27 23:54:22,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:54:22,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 559 transitions. [2023-01-27 23:54:22,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.8) internal successors, (559), 5 states have internal predecessors, (559), 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) [2023-01-27 23:54:22,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 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) [2023-01-27 23:54:22,841 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 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) [2023-01-27 23:54:22,842 INFO L175 Difference]: Start difference. First operand has 63 places, 68 transitions, 228 flow. Second operand 5 states and 559 transitions. [2023-01-27 23:54:22,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 134 transitions, 639 flow [2023-01-27 23:54:22,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 134 transitions, 639 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 23:54:22,850 INFO L231 Difference]: Finished difference. Result has 70 places, 80 transitions, 355 flow [2023-01-27 23:54:22,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=355, PETRI_PLACES=70, PETRI_TRANSITIONS=80} [2023-01-27 23:54:22,851 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 17 predicate places. [2023-01-27 23:54:22,851 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 80 transitions, 355 flow [2023-01-27 23:54:22,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 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) [2023-01-27 23:54:22,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:54:22,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:54:22,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 23:54:22,852 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 23:54:22,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:54:22,853 INFO L85 PathProgramCache]: Analyzing trace with hash 767352201, now seen corresponding path program 4 times [2023-01-27 23:54:22,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:54:22,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688732232] [2023-01-27 23:54:22,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:54:22,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:54:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:54:22,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:54:22,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:54:22,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688732232] [2023-01-27 23:54:22,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688732232] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:54:22,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:54:22,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 23:54:22,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451073861] [2023-01-27 23:54:22,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:54:22,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 23:54:22,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:54:22,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 23:54:22,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 23:54:22,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 198 [2023-01-27 23:54:22,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 80 transitions, 355 flow. Second operand has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 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) [2023-01-27 23:54:22,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:54:22,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 198 [2023-01-27 23:54:22,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:54:23,831 INFO L130 PetriNetUnfolder]: 7311/12449 cut-off events. [2023-01-27 23:54:23,831 INFO L131 PetriNetUnfolder]: For 8453/9135 co-relation queries the response was YES. [2023-01-27 23:54:23,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32187 conditions, 12449 events. 7311/12449 cut-off events. For 8453/9135 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 86410 event pairs, 1424 based on Foata normal form. 378/11718 useless extension candidates. Maximal degree in co-relation 32173. Up to 3446 conditions per place. [2023-01-27 23:54:23,886 INFO L137 encePairwiseOnDemand]: 194/198 looper letters, 160 selfloop transitions, 10 changer transitions 20/210 dead transitions. [2023-01-27 23:54:23,886 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 210 transitions, 1299 flow [2023-01-27 23:54:23,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 23:54:23,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 23:54:23,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 676 transitions. [2023-01-27 23:54:23,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6828282828282828 [2023-01-27 23:54:23,888 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 676 transitions. [2023-01-27 23:54:23,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 676 transitions. [2023-01-27 23:54:23,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:54:23,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 676 transitions. [2023-01-27 23:54:23,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 135.2) internal successors, (676), 5 states have internal predecessors, (676), 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) [2023-01-27 23:54:23,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 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) [2023-01-27 23:54:23,892 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 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) [2023-01-27 23:54:23,892 INFO L175 Difference]: Start difference. First operand has 70 places, 80 transitions, 355 flow. Second operand 5 states and 676 transitions. [2023-01-27 23:54:23,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 210 transitions, 1299 flow [2023-01-27 23:54:23,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 210 transitions, 1277 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-01-27 23:54:23,913 INFO L231 Difference]: Finished difference. Result has 77 places, 87 transitions, 428 flow [2023-01-27 23:54:23,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=428, PETRI_PLACES=77, PETRI_TRANSITIONS=87} [2023-01-27 23:54:23,914 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 24 predicate places. [2023-01-27 23:54:23,914 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 87 transitions, 428 flow [2023-01-27 23:54:23,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 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) [2023-01-27 23:54:23,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:54:23,915 INFO L208 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] [2023-01-27 23:54:23,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 23:54:23,915 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 23:54:23,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:54:23,915 INFO L85 PathProgramCache]: Analyzing trace with hash -436816581, now seen corresponding path program 1 times [2023-01-27 23:54:23,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:54:23,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388660353] [2023-01-27 23:54:23,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:54:23,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:54:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:54:24,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:54:24,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:54:24,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388660353] [2023-01-27 23:54:24,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388660353] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:54:24,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:54:24,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 23:54:24,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110090032] [2023-01-27 23:54:24,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:54:24,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 23:54:24,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:54:24,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 23:54:24,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 23:54:24,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 198 [2023-01-27 23:54:24,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 87 transitions, 428 flow. Second operand has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 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) [2023-01-27 23:54:24,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:54:24,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 198 [2023-01-27 23:54:24,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:54:24,874 INFO L130 PetriNetUnfolder]: 5926/10293 cut-off events. [2023-01-27 23:54:24,874 INFO L131 PetriNetUnfolder]: For 7317/8062 co-relation queries the response was YES. [2023-01-27 23:54:24,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25908 conditions, 10293 events. 5926/10293 cut-off events. For 7317/8062 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 70943 event pairs, 2070 based on Foata normal form. 418/9678 useless extension candidates. Maximal degree in co-relation 25891. Up to 6104 conditions per place. [2023-01-27 23:54:24,910 INFO L137 encePairwiseOnDemand]: 191/198 looper letters, 78 selfloop transitions, 9 changer transitions 8/130 dead transitions. [2023-01-27 23:54:24,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 130 transitions, 767 flow [2023-01-27 23:54:24,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 23:54:24,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 23:54:24,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 602 transitions. [2023-01-27 23:54:24,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6080808080808081 [2023-01-27 23:54:24,912 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 602 transitions. [2023-01-27 23:54:24,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 602 transitions. [2023-01-27 23:54:24,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:54:24,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 602 transitions. [2023-01-27 23:54:24,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.4) internal successors, (602), 5 states have internal predecessors, (602), 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) [2023-01-27 23:54:24,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 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) [2023-01-27 23:54:24,916 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 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) [2023-01-27 23:54:24,916 INFO L175 Difference]: Start difference. First operand has 77 places, 87 transitions, 428 flow. Second operand 5 states and 602 transitions. [2023-01-27 23:54:24,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 130 transitions, 767 flow [2023-01-27 23:54:24,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 130 transitions, 759 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-01-27 23:54:24,929 INFO L231 Difference]: Finished difference. Result has 84 places, 91 transitions, 474 flow [2023-01-27 23:54:24,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=474, PETRI_PLACES=84, PETRI_TRANSITIONS=91} [2023-01-27 23:54:24,932 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 31 predicate places. [2023-01-27 23:54:24,932 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 91 transitions, 474 flow [2023-01-27 23:54:24,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 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) [2023-01-27 23:54:24,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:54:24,933 INFO L208 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] [2023-01-27 23:54:24,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 23:54:24,933 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 23:54:24,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:54:24,936 INFO L85 PathProgramCache]: Analyzing trace with hash 2145215388, now seen corresponding path program 1 times [2023-01-27 23:54:24,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:54:24,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606821846] [2023-01-27 23:54:24,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:54:24,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:54:24,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:54:24,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:54:24,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:54:24,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606821846] [2023-01-27 23:54:24,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606821846] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:54:24,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:54:24,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 23:54:24,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547725619] [2023-01-27 23:54:24,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:54:24,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 23:54:24,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:54:25,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 23:54:25,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 23:54:25,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 198 [2023-01-27 23:54:25,001 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 91 transitions, 474 flow. Second operand has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 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) [2023-01-27 23:54:25,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:54:25,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 198 [2023-01-27 23:54:25,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:54:25,784 INFO L130 PetriNetUnfolder]: 5307/9768 cut-off events. [2023-01-27 23:54:25,785 INFO L131 PetriNetUnfolder]: For 9352/9941 co-relation queries the response was YES. [2023-01-27 23:54:25,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26643 conditions, 9768 events. 5307/9768 cut-off events. For 9352/9941 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 68526 event pairs, 1905 based on Foata normal form. 206/9125 useless extension candidates. Maximal degree in co-relation 26622. Up to 5865 conditions per place. [2023-01-27 23:54:25,821 INFO L137 encePairwiseOnDemand]: 191/198 looper letters, 81 selfloop transitions, 10 changer transitions 12/136 dead transitions. [2023-01-27 23:54:25,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 136 transitions, 841 flow [2023-01-27 23:54:25,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 23:54:25,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 23:54:25,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 605 transitions. [2023-01-27 23:54:25,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2023-01-27 23:54:25,823 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 605 transitions. [2023-01-27 23:54:25,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 605 transitions. [2023-01-27 23:54:25,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:54:25,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 605 transitions. [2023-01-27 23:54:25,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 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) [2023-01-27 23:54:25,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 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) [2023-01-27 23:54:25,826 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 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) [2023-01-27 23:54:25,827 INFO L175 Difference]: Start difference. First operand has 84 places, 91 transitions, 474 flow. Second operand 5 states and 605 transitions. [2023-01-27 23:54:25,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 136 transitions, 841 flow [2023-01-27 23:54:25,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 136 transitions, 839 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-01-27 23:54:25,844 INFO L231 Difference]: Finished difference. Result has 91 places, 91 transitions, 483 flow [2023-01-27 23:54:25,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=483, PETRI_PLACES=91, PETRI_TRANSITIONS=91} [2023-01-27 23:54:25,845 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 38 predicate places. [2023-01-27 23:54:25,845 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 91 transitions, 483 flow [2023-01-27 23:54:25,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 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) [2023-01-27 23:54:25,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:54:25,846 INFO L208 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] [2023-01-27 23:54:25,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 23:54:25,846 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 23:54:25,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:54:25,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1581251780, now seen corresponding path program 1 times [2023-01-27 23:54:25,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:54:25,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990019638] [2023-01-27 23:54:25,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:54:25,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:54:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:54:25,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:54:25,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:54:25,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990019638] [2023-01-27 23:54:25,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990019638] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:54:25,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:54:25,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 23:54:25,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396946142] [2023-01-27 23:54:25,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:54:25,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 23:54:25,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:54:25,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 23:54:25,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 23:54:25,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 198 [2023-01-27 23:54:25,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 91 transitions, 483 flow. Second operand has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 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) [2023-01-27 23:54:25,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:54:25,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 198 [2023-01-27 23:54:25,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:54:26,398 INFO L130 PetriNetUnfolder]: 3708/6624 cut-off events. [2023-01-27 23:54:26,399 INFO L131 PetriNetUnfolder]: For 8247/8622 co-relation queries the response was YES. [2023-01-27 23:54:26,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20100 conditions, 6624 events. 3708/6624 cut-off events. For 8247/8622 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 41361 event pairs, 1227 based on Foata normal form. 180/6312 useless extension candidates. Maximal degree in co-relation 20075. Up to 3259 conditions per place. [2023-01-27 23:54:26,422 INFO L137 encePairwiseOnDemand]: 194/198 looper letters, 75 selfloop transitions, 6 changer transitions 52/154 dead transitions. [2023-01-27 23:54:26,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 154 transitions, 1081 flow [2023-01-27 23:54:26,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 23:54:26,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 23:54:26,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 631 transitions. [2023-01-27 23:54:26,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6373737373737374 [2023-01-27 23:54:26,424 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 631 transitions. [2023-01-27 23:54:26,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 631 transitions. [2023-01-27 23:54:26,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:54:26,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 631 transitions. [2023-01-27 23:54:26,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.2) internal successors, (631), 5 states have internal predecessors, (631), 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) [2023-01-27 23:54:26,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 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) [2023-01-27 23:54:26,428 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 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) [2023-01-27 23:54:26,428 INFO L175 Difference]: Start difference. First operand has 91 places, 91 transitions, 483 flow. Second operand 5 states and 631 transitions. [2023-01-27 23:54:26,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 154 transitions, 1081 flow [2023-01-27 23:54:26,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 154 transitions, 1079 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-01-27 23:54:26,448 INFO L231 Difference]: Finished difference. Result has 97 places, 88 transitions, 478 flow [2023-01-27 23:54:26,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=478, PETRI_PLACES=97, PETRI_TRANSITIONS=88} [2023-01-27 23:54:26,449 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 44 predicate places. [2023-01-27 23:54:26,449 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 88 transitions, 478 flow [2023-01-27 23:54:26,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 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) [2023-01-27 23:54:26,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:54:26,449 INFO L208 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] [2023-01-27 23:54:26,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-27 23:54:26,449 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 23:54:26,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:54:26,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1123222480, now seen corresponding path program 2 times [2023-01-27 23:54:26,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:54:26,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046850284] [2023-01-27 23:54:26,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:54:26,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:54:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:54:26,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:54:26,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:54:26,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046850284] [2023-01-27 23:54:26,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046850284] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:54:26,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:54:26,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 23:54:26,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889507638] [2023-01-27 23:54:26,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:54:26,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 23:54:26,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:54:26,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 23:54:26,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 23:54:26,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 198 [2023-01-27 23:54:26,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 88 transitions, 478 flow. Second operand has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 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) [2023-01-27 23:54:26,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:54:26,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 198 [2023-01-27 23:54:26,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:54:26,773 INFO L130 PetriNetUnfolder]: 1161/2260 cut-off events. [2023-01-27 23:54:26,773 INFO L131 PetriNetUnfolder]: For 3653/3838 co-relation queries the response was YES. [2023-01-27 23:54:26,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7078 conditions, 2260 events. 1161/2260 cut-off events. For 3653/3838 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 12822 event pairs, 288 based on Foata normal form. 162/2284 useless extension candidates. Maximal degree in co-relation 7050. Up to 694 conditions per place. [2023-01-27 23:54:26,780 INFO L137 encePairwiseOnDemand]: 194/198 looper letters, 0 selfloop transitions, 0 changer transitions 117/117 dead transitions. [2023-01-27 23:54:26,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 117 transitions, 791 flow [2023-01-27 23:54:26,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 23:54:26,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 23:54:26,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 615 transitions. [2023-01-27 23:54:26,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2023-01-27 23:54:26,783 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 615 transitions. [2023-01-27 23:54:26,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 615 transitions. [2023-01-27 23:54:26,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:54:26,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 615 transitions. [2023-01-27 23:54:26,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 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) [2023-01-27 23:54:26,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 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) [2023-01-27 23:54:26,787 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 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) [2023-01-27 23:54:26,787 INFO L175 Difference]: Start difference. First operand has 97 places, 88 transitions, 478 flow. Second operand 5 states and 615 transitions. [2023-01-27 23:54:26,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 117 transitions, 791 flow [2023-01-27 23:54:26,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 117 transitions, 717 flow, removed 16 selfloop flow, removed 10 redundant places. [2023-01-27 23:54:26,797 INFO L231 Difference]: Finished difference. Result has 80 places, 0 transitions, 0 flow [2023-01-27 23:54:26,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=80, PETRI_TRANSITIONS=0} [2023-01-27 23:54:26,798 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 27 predicate places. [2023-01-27 23:54:26,799 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 0 transitions, 0 flow [2023-01-27 23:54:26,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 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) [2023-01-27 23:54:26,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-01-27 23:54:26,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-01-27 23:54:26,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-01-27 23:54:26,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-01-27 23:54:26,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-01-27 23:54:26,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-01-27 23:54:26,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-27 23:54:26,804 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1, 1] [2023-01-27 23:54:26,808 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 23:54:26,808 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 23:54:26,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 11:54:26 BasicIcfg [2023-01-27 23:54:26,814 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 23:54:26,815 INFO L158 Benchmark]: Toolchain (without parser) took 9526.02ms. Allocated memory was 362.8MB in the beginning and 1.0GB in the end (delta: 656.4MB). Free memory was 320.4MB in the beginning and 746.9MB in the end (delta: -426.4MB). Peak memory consumption was 446.7MB. Max. memory is 16.0GB. [2023-01-27 23:54:26,815 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 213.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 23:54:26,815 INFO L158 Benchmark]: CACSL2BoogieTranslator took 481.18ms. Allocated memory is still 362.8MB. Free memory was 320.1MB in the beginning and 299.6MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-27 23:54:26,815 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.75ms. Allocated memory is still 362.8MB. Free memory was 299.6MB in the beginning and 297.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 23:54:26,816 INFO L158 Benchmark]: Boogie Preprocessor took 46.98ms. Allocated memory is still 362.8MB. Free memory was 297.7MB in the beginning and 295.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 23:54:26,816 INFO L158 Benchmark]: RCFGBuilder took 442.36ms. Allocated memory is still 362.8MB. Free memory was 295.9MB in the beginning and 280.3MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-27 23:54:26,816 INFO L158 Benchmark]: TraceAbstraction took 8497.25ms. Allocated memory was 362.8MB in the beginning and 1.0GB in the end (delta: 656.4MB). Free memory was 279.9MB in the beginning and 746.9MB in the end (delta: -467.0MB). Peak memory consumption was 404.8MB. Max. memory is 16.0GB. [2023-01-27 23:54:26,817 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 213.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 481.18ms. Allocated memory is still 362.8MB. Free memory was 320.1MB in the beginning and 299.6MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 51.75ms. Allocated memory is still 362.8MB. Free memory was 299.6MB in the beginning and 297.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 46.98ms. Allocated memory is still 362.8MB. Free memory was 297.7MB in the beginning and 295.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 442.36ms. Allocated memory is still 362.8MB. Free memory was 295.9MB in the beginning and 280.3MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 8497.25ms. Allocated memory was 362.8MB in the beginning and 1.0GB in the end (delta: 656.4MB). Free memory was 279.9MB in the beginning and 746.9MB in the end (delta: -467.0MB). Peak memory consumption was 404.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 101 PlacesBefore, 53 PlacesAfterwards, 118 TransitionsBefore, 64 TransitionsAfterwards, 4988 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 6 ChoiceCompositions, 69 TotalNumberOfCompositions, 14233 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5643, independent: 5307, independent conditional: 0, independent unconditional: 5307, dependent: 336, dependent conditional: 0, dependent unconditional: 336, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2194, independent: 2148, independent conditional: 0, independent unconditional: 2148, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5643, independent: 3159, independent conditional: 0, independent unconditional: 3159, dependent: 290, dependent conditional: 0, dependent unconditional: 290, unknown: 2194, unknown conditional: 0, unknown unconditional: 2194] , Statistics on independence cache: Total cache size (in pairs): 397, Positive cache size: 364, Positive conditional cache size: 0, Positive unconditional cache size: 364, Negative cache size: 33, Negative conditional cache size: 0, Negative unconditional cache size: 33, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 834]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 764]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 172 locations, 6 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: 8.3s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 504 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 504 mSDsluCounter, 77 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1669 IncrementalHoareTripleChecker+Invalid, 1691 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 53 mSDtfsCounter, 1669 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=483occurred in iteration=9, InterpolantAutomatonStates: 46, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 196 NumberOfCodeBlocks, 196 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 185 ConstructedInterpolants, 0 QuantifiedInterpolants, 313 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-27 23:54:26,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...