/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 AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe030_power.opt_pso.opt_rmo.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 07:03:53,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 07:03:53,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 07:03:53,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 07:03:53,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 07:03:53,420 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 07:03:53,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 07:03:53,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 07:03:53,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 07:03:53,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 07:03:53,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 07:03:53,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 07:03:53,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 07:03:53,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 07:03:53,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 07:03:53,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 07:03:53,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 07:03:53,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 07:03:53,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 07:03:53,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 07:03:53,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 07:03:53,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 07:03:53,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 07:03:53,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 07:03:53,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 07:03:53,449 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 07:03:53,449 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 07:03:53,450 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 07:03:53,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 07:03:53,451 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 07:03:53,451 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 07:03:53,452 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 07:03:53,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 07:03:53,453 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 07:03:53,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 07:03:53,454 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 07:03:53,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 07:03:53,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 07:03:53,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 07:03:53,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 07:03:53,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 07:03:53,456 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 [2023-01-28 07:03:53,478 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 07:03:53,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 07:03:53,479 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 07:03:53,479 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 07:03:53,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 07:03:53,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 07:03:53,480 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 07:03:53,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 07:03:53,480 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 07:03:53,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 07:03:53,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 07:03:53,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 07:03:53,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 07:03:53,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 07:03:53,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 07:03:53,481 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 07:03:53,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 07:03:53,481 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 07:03:53,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 07:03:53,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 07:03:53,481 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 07:03:53,481 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 07:03:53,481 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 07:03:53,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:03:53,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 07:03:53,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 07:03:53,482 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 07:03:53,482 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 07:03:53,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 07:03:53,482 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 07:03:53,482 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 07:03:53,482 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 07:03:53,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 07:03:53,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 07:03:53,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 07:03:53,687 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 07:03:53,688 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 07:03:53,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe030_power.opt_pso.opt_rmo.opt.i [2023-01-28 07:03:54,678 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 07:03:54,890 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 07:03:54,891 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_power.opt_pso.opt_rmo.opt.i [2023-01-28 07:03:54,900 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6616322d7/5c809b3f58194146af3dc951652cfde0/FLAG8b9017afd [2023-01-28 07:03:54,911 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6616322d7/5c809b3f58194146af3dc951652cfde0 [2023-01-28 07:03:54,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 07:03:54,913 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 07:03:54,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 07:03:54,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 07:03:54,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 07:03:54,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:03:54" (1/1) ... [2023-01-28 07:03:54,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@562ff629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:54, skipping insertion in model container [2023-01-28 07:03:54,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:03:54" (1/1) ... [2023-01-28 07:03:54,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 07:03:54,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 07:03:55,113 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-wmm/safe030_power.opt_pso.opt_rmo.opt.i[967,980] [2023-01-28 07:03:55,267 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:03:55,277 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 07:03:55,286 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-wmm/safe030_power.opt_pso.opt_rmo.opt.i[967,980] [2023-01-28 07:03:55,324 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:03:55,342 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:03:55,343 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:03:55,347 INFO L208 MainTranslator]: Completed translation [2023-01-28 07:03:55,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:55 WrapperNode [2023-01-28 07:03:55,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 07:03:55,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 07:03:55,348 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 07:03:55,348 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 07:03:55,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:55" (1/1) ... [2023-01-28 07:03:55,362 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:55" (1/1) ... [2023-01-28 07:03:55,385 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 143 [2023-01-28 07:03:55,386 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 07:03:55,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 07:03:55,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 07:03:55,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 07:03:55,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:55" (1/1) ... [2023-01-28 07:03:55,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:55" (1/1) ... [2023-01-28 07:03:55,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:55" (1/1) ... [2023-01-28 07:03:55,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:55" (1/1) ... [2023-01-28 07:03:55,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:55" (1/1) ... [2023-01-28 07:03:55,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:55" (1/1) ... [2023-01-28 07:03:55,404 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:55" (1/1) ... [2023-01-28 07:03:55,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:55" (1/1) ... [2023-01-28 07:03:55,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 07:03:55,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 07:03:55,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 07:03:55,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 07:03:55,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:55" (1/1) ... [2023-01-28 07:03:55,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:03:55,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:03:55,433 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) [2023-01-28 07:03:55,466 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 [2023-01-28 07:03:55,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 07:03:55,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 07:03:55,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 07:03:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 07:03:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 07:03:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 07:03:55,490 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 07:03:55,493 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 07:03:55,494 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 07:03:55,494 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-28 07:03:55,494 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-28 07:03:55,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 07:03:55,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 07:03:55,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 07:03:55,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 07:03:55,495 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 07:03:55,639 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 07:03:55,640 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 07:03:55,841 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 07:03:56,015 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 07:03:56,015 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 07:03:56,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:03:56 BoogieIcfgContainer [2023-01-28 07:03:56,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 07:03:56,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 07:03:56,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 07:03:56,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 07:03:56,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 07:03:54" (1/3) ... [2023-01-28 07:03:56,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e9e2942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:03:56, skipping insertion in model container [2023-01-28 07:03:56,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:03:55" (2/3) ... [2023-01-28 07:03:56,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e9e2942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:03:56, skipping insertion in model container [2023-01-28 07:03:56,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:03:56" (3/3) ... [2023-01-28 07:03:56,023 INFO L112 eAbstractionObserver]: Analyzing ICFG safe030_power.opt_pso.opt_rmo.opt.i [2023-01-28 07:03:56,034 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 07:03:56,035 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-28 07:03:56,035 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 07:03:56,091 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 07:03:56,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 105 transitions, 225 flow [2023-01-28 07:03:56,173 INFO L130 PetriNetUnfolder]: 2/102 cut-off events. [2023-01-28 07:03:56,173 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:03:56,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 102 events. 2/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2023-01-28 07:03:56,177 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 105 transitions, 225 flow [2023-01-28 07:03:56,186 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 102 transitions, 213 flow [2023-01-28 07:03:56,188 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:03:56,196 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 102 transitions, 213 flow [2023-01-28 07:03:56,197 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 102 transitions, 213 flow [2023-01-28 07:03:56,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 102 transitions, 213 flow [2023-01-28 07:03:56,260 INFO L130 PetriNetUnfolder]: 2/102 cut-off events. [2023-01-28 07:03:56,260 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:03:56,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 102 events. 2/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2023-01-28 07:03:56,262 INFO L119 LiptonReduction]: Number of co-enabled transitions 1776 [2023-01-28 07:03:59,381 INFO L134 LiptonReduction]: Checked pairs total: 4534 [2023-01-28 07:03:59,382 INFO L136 LiptonReduction]: Total number of compositions: 92 [2023-01-28 07:03:59,409 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 07:03:59,415 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;@6ccadcb6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:03:59,415 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-01-28 07:03:59,420 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2023-01-28 07:03:59,421 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:03:59,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:03:59,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:03:59,423 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:03:59,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:03:59,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1748915370, now seen corresponding path program 1 times [2023-01-28 07:03:59,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:03:59,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345291489] [2023-01-28 07:03:59,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:03:59,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:03:59,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:03:59,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:03:59,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:03:59,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345291489] [2023-01-28 07:03:59,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345291489] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:03:59,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:03:59,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 07:03:59,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973867049] [2023-01-28 07:03:59,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:03:59,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:03:59,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:03:59,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:03:59,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:03:59,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 197 [2023-01-28 07:03:59,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 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) [2023-01-28 07:03:59,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:03:59,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 197 [2023-01-28 07:03:59,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:00,044 INFO L130 PetriNetUnfolder]: 511/847 cut-off events. [2023-01-28 07:04:00,044 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-01-28 07:04:00,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1666 conditions, 847 events. 511/847 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4071 event pairs, 112 based on Foata normal form. 0/795 useless extension candidates. Maximal degree in co-relation 1655. Up to 580 conditions per place. [2023-01-28 07:04:00,052 INFO L137 encePairwiseOnDemand]: 194/197 looper letters, 23 selfloop transitions, 2 changer transitions 2/30 dead transitions. [2023-01-28 07:04:00,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 123 flow [2023-01-28 07:04:00,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:04:00,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:04:00,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2023-01-28 07:04:00,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5143824027072758 [2023-01-28 07:04:00,067 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2023-01-28 07:04:00,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2023-01-28 07:04:00,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:00,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2023-01-28 07:04:00,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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) [2023-01-28 07:04:00,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 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) [2023-01-28 07:04:00,079 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 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) [2023-01-28 07:04:00,080 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 53 flow. Second operand 3 states and 304 transitions. [2023-01-28 07:04:00,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 123 flow [2023-01-28 07:04:00,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 30 transitions, 120 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 07:04:00,085 INFO L231 Difference]: Finished difference. Result has 30 places, 20 transitions, 50 flow [2023-01-28 07:04:00,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2023-01-28 07:04:00,089 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -2 predicate places. [2023-01-28 07:04:00,089 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 50 flow [2023-01-28 07:04:00,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 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) [2023-01-28 07:04:00,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:00,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:00,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 07:04:00,090 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:00,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:00,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1375404218, now seen corresponding path program 1 times [2023-01-28 07:04:00,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:00,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138895149] [2023-01-28 07:04:00,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:00,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:00,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:04:00,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:00,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138895149] [2023-01-28 07:04:00,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138895149] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:00,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:00,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:04:00,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459264023] [2023-01-28 07:04:00,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:00,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:04:00,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:00,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:04:00,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:04:00,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 197 [2023-01-28 07:04:00,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 50 flow. Second operand has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 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) [2023-01-28 07:04:00,924 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:00,924 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 197 [2023-01-28 07:04:00,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:01,164 INFO L130 PetriNetUnfolder]: 1263/1934 cut-off events. [2023-01-28 07:04:01,164 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 07:04:01,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4050 conditions, 1934 events. 1263/1934 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9169 event pairs, 113 based on Foata normal form. 68/2002 useless extension candidates. Maximal degree in co-relation 4040. Up to 1297 conditions per place. [2023-01-28 07:04:01,174 INFO L137 encePairwiseOnDemand]: 187/197 looper letters, 37 selfloop transitions, 11 changer transitions 0/48 dead transitions. [2023-01-28 07:04:01,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 48 transitions, 212 flow [2023-01-28 07:04:01,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:04:01,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:04:01,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 366 transitions. [2023-01-28 07:04:01,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46446700507614214 [2023-01-28 07:04:01,176 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 366 transitions. [2023-01-28 07:04:01,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 366 transitions. [2023-01-28 07:04:01,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:01,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 366 transitions. [2023-01-28 07:04:01,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 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) [2023-01-28 07:04:01,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 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) [2023-01-28 07:04:01,180 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 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) [2023-01-28 07:04:01,180 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 50 flow. Second operand 4 states and 366 transitions. [2023-01-28 07:04:01,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 48 transitions, 212 flow [2023-01-28 07:04:01,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 48 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 07:04:01,182 INFO L231 Difference]: Finished difference. Result has 33 places, 30 transitions, 130 flow [2023-01-28 07:04:01,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=33, PETRI_TRANSITIONS=30} [2023-01-28 07:04:01,183 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2023-01-28 07:04:01,183 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 30 transitions, 130 flow [2023-01-28 07:04:01,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 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) [2023-01-28 07:04:01,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:01,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:01,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 07:04:01,184 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:01,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:01,184 INFO L85 PathProgramCache]: Analyzing trace with hash 312141289, now seen corresponding path program 1 times [2023-01-28 07:04:01,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:01,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870504760] [2023-01-28 07:04:01,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:01,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:01,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:04:01,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:01,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870504760] [2023-01-28 07:04:01,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870504760] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:01,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:01,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:04:01,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739256157] [2023-01-28 07:04:01,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:01,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:04:01,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:01,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:04:01,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:04:01,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 197 [2023-01-28 07:04:01,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 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) [2023-01-28 07:04:01,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:01,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 197 [2023-01-28 07:04:01,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:01,978 INFO L130 PetriNetUnfolder]: 1244/1907 cut-off events. [2023-01-28 07:04:01,978 INFO L131 PetriNetUnfolder]: For 851/851 co-relation queries the response was YES. [2023-01-28 07:04:01,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5532 conditions, 1907 events. 1244/1907 cut-off events. For 851/851 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8803 event pairs, 134 based on Foata normal form. 8/1915 useless extension candidates. Maximal degree in co-relation 5519. Up to 1257 conditions per place. [2023-01-28 07:04:01,989 INFO L137 encePairwiseOnDemand]: 187/197 looper letters, 41 selfloop transitions, 18 changer transitions 0/59 dead transitions. [2023-01-28 07:04:01,989 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 59 transitions, 348 flow [2023-01-28 07:04:01,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:04:01,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:04:01,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 367 transitions. [2023-01-28 07:04:01,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46573604060913704 [2023-01-28 07:04:01,991 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 367 transitions. [2023-01-28 07:04:01,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 367 transitions. [2023-01-28 07:04:01,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:01,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 367 transitions. [2023-01-28 07:04:01,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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) [2023-01-28 07:04:01,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 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) [2023-01-28 07:04:01,993 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 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) [2023-01-28 07:04:01,993 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 130 flow. Second operand 4 states and 367 transitions. [2023-01-28 07:04:01,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 59 transitions, 348 flow [2023-01-28 07:04:01,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 59 transitions, 348 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 07:04:01,996 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 258 flow [2023-01-28 07:04:01,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2023-01-28 07:04:01,997 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2023-01-28 07:04:01,999 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 258 flow [2023-01-28 07:04:02,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 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) [2023-01-28 07:04:02,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:02,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:02,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 07:04:02,000 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:02,000 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:02,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1084925299, now seen corresponding path program 1 times [2023-01-28 07:04:02,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:02,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946406640] [2023-01-28 07:04:02,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:02,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:02,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:04:02,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:02,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946406640] [2023-01-28 07:04:02,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946406640] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:02,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:02,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:04:02,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003105159] [2023-01-28 07:04:02,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:02,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:04:02,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:02,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:04:02,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:04:02,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 197 [2023-01-28 07:04:02,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 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) [2023-01-28 07:04:02,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:02,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 197 [2023-01-28 07:04:02,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:02,812 INFO L130 PetriNetUnfolder]: 1478/2305 cut-off events. [2023-01-28 07:04:02,812 INFO L131 PetriNetUnfolder]: For 3297/3297 co-relation queries the response was YES. [2023-01-28 07:04:02,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8126 conditions, 2305 events. 1478/2305 cut-off events. For 3297/3297 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 11318 event pairs, 380 based on Foata normal form. 50/2355 useless extension candidates. Maximal degree in co-relation 8108. Up to 1141 conditions per place. [2023-01-28 07:04:02,828 INFO L137 encePairwiseOnDemand]: 187/197 looper letters, 45 selfloop transitions, 23 changer transitions 0/68 dead transitions. [2023-01-28 07:04:02,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 68 transitions, 522 flow [2023-01-28 07:04:02,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:04:02,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:04:02,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 367 transitions. [2023-01-28 07:04:02,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46573604060913704 [2023-01-28 07:04:02,830 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 367 transitions. [2023-01-28 07:04:02,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 367 transitions. [2023-01-28 07:04:02,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:02,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 367 transitions. [2023-01-28 07:04:02,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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) [2023-01-28 07:04:02,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 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) [2023-01-28 07:04:02,840 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 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) [2023-01-28 07:04:02,840 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 258 flow. Second operand 4 states and 367 transitions. [2023-01-28 07:04:02,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 68 transitions, 522 flow [2023-01-28 07:04:02,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 68 transitions, 520 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-01-28 07:04:02,850 INFO L231 Difference]: Finished difference. Result has 45 places, 47 transitions, 432 flow [2023-01-28 07:04:02,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=432, PETRI_PLACES=45, PETRI_TRANSITIONS=47} [2023-01-28 07:04:02,851 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 13 predicate places. [2023-01-28 07:04:02,851 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 47 transitions, 432 flow [2023-01-28 07:04:02,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 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) [2023-01-28 07:04:02,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:02,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:02,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 07:04:02,853 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:02,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:02,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1084985842, now seen corresponding path program 1 times [2023-01-28 07:04:02,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:02,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407475846] [2023-01-28 07:04:02,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:02,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:03,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:04:03,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:03,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407475846] [2023-01-28 07:04:03,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407475846] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:03,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:03,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:04:03,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234377760] [2023-01-28 07:04:03,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:03,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:04:03,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:03,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:04:03,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:04:03,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 197 [2023-01-28 07:04:03,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 432 flow. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 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) [2023-01-28 07:04:03,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:03,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 197 [2023-01-28 07:04:03,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:03,443 INFO L130 PetriNetUnfolder]: 1268/2054 cut-off events. [2023-01-28 07:04:03,444 INFO L131 PetriNetUnfolder]: For 5304/5312 co-relation queries the response was YES. [2023-01-28 07:04:03,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8478 conditions, 2054 events. 1268/2054 cut-off events. For 5304/5312 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 10511 event pairs, 290 based on Foata normal form. 8/2033 useless extension candidates. Maximal degree in co-relation 8455. Up to 1753 conditions per place. [2023-01-28 07:04:03,456 INFO L137 encePairwiseOnDemand]: 193/197 looper letters, 45 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2023-01-28 07:04:03,456 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 60 transitions, 622 flow [2023-01-28 07:04:03,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:04:03,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:04:03,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2023-01-28 07:04:03,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.494077834179357 [2023-01-28 07:04:03,457 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 292 transitions. [2023-01-28 07:04:03,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 292 transitions. [2023-01-28 07:04:03,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:03,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 292 transitions. [2023-01-28 07:04:03,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 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) [2023-01-28 07:04:03,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 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) [2023-01-28 07:04:03,459 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 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) [2023-01-28 07:04:03,459 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 432 flow. Second operand 3 states and 292 transitions. [2023-01-28 07:04:03,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 60 transitions, 622 flow [2023-01-28 07:04:03,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 60 transitions, 595 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 07:04:03,467 INFO L231 Difference]: Finished difference. Result has 47 places, 50 transitions, 449 flow [2023-01-28 07:04:03,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=449, PETRI_PLACES=47, PETRI_TRANSITIONS=50} [2023-01-28 07:04:03,469 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 15 predicate places. [2023-01-28 07:04:03,469 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 50 transitions, 449 flow [2023-01-28 07:04:03,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 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) [2023-01-28 07:04:03,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:03,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:03,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 07:04:03,470 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:03,470 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:03,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1521680318, now seen corresponding path program 1 times [2023-01-28 07:04:03,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:03,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646493406] [2023-01-28 07:04:03,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:03,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:03,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:04:03,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:03,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646493406] [2023-01-28 07:04:03,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646493406] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:03,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:03,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:04:03,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151859339] [2023-01-28 07:04:03,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:03,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:04:03,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:03,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:04:03,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:04:03,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 197 [2023-01-28 07:04:03,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 50 transitions, 449 flow. Second operand has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 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) [2023-01-28 07:04:03,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:03,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 197 [2023-01-28 07:04:03,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:03,912 INFO L130 PetriNetUnfolder]: 1283/2076 cut-off events. [2023-01-28 07:04:03,912 INFO L131 PetriNetUnfolder]: For 4846/4858 co-relation queries the response was YES. [2023-01-28 07:04:03,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8796 conditions, 2076 events. 1283/2076 cut-off events. For 4846/4858 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 10654 event pairs, 164 based on Foata normal form. 12/2062 useless extension candidates. Maximal degree in co-relation 8771. Up to 1504 conditions per place. [2023-01-28 07:04:03,923 INFO L137 encePairwiseOnDemand]: 191/197 looper letters, 50 selfloop transitions, 12 changer transitions 1/73 dead transitions. [2023-01-28 07:04:03,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 73 transitions, 739 flow [2023-01-28 07:04:03,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:04:03,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:04:03,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 396 transitions. [2023-01-28 07:04:03,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025380710659898 [2023-01-28 07:04:03,925 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 396 transitions. [2023-01-28 07:04:03,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 396 transitions. [2023-01-28 07:04:03,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:03,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 396 transitions. [2023-01-28 07:04:03,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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) [2023-01-28 07:04:03,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 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) [2023-01-28 07:04:03,927 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 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) [2023-01-28 07:04:03,927 INFO L175 Difference]: Start difference. First operand has 47 places, 50 transitions, 449 flow. Second operand 4 states and 396 transitions. [2023-01-28 07:04:03,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 73 transitions, 739 flow [2023-01-28 07:04:03,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 73 transitions, 734 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 07:04:03,932 INFO L231 Difference]: Finished difference. Result has 50 places, 55 transitions, 526 flow [2023-01-28 07:04:03,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=526, PETRI_PLACES=50, PETRI_TRANSITIONS=55} [2023-01-28 07:04:03,933 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 18 predicate places. [2023-01-28 07:04:03,933 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 55 transitions, 526 flow [2023-01-28 07:04:03,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 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) [2023-01-28 07:04:03,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:03,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:03,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 07:04:03,933 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:03,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:03,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1503212466, now seen corresponding path program 2 times [2023-01-28 07:04:03,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:03,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100550907] [2023-01-28 07:04:03,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:03,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:04,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:04:04,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:04,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100550907] [2023-01-28 07:04:04,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100550907] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:04,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:04,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:04:04,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935903603] [2023-01-28 07:04:04,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:04,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:04:04,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:04,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:04:04,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:04:04,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 197 [2023-01-28 07:04:04,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 55 transitions, 526 flow. Second operand has 5 states, 5 states have (on average 90.4) internal successors, (452), 5 states have internal predecessors, (452), 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) [2023-01-28 07:04:04,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:04,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 197 [2023-01-28 07:04:04,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:04,442 INFO L130 PetriNetUnfolder]: 1266/2047 cut-off events. [2023-01-28 07:04:04,443 INFO L131 PetriNetUnfolder]: For 6368/6392 co-relation queries the response was YES. [2023-01-28 07:04:04,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9230 conditions, 2047 events. 1266/2047 cut-off events. For 6368/6392 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 10426 event pairs, 175 based on Foata normal form. 22/2036 useless extension candidates. Maximal degree in co-relation 9203. Up to 1495 conditions per place. [2023-01-28 07:04:04,455 INFO L137 encePairwiseOnDemand]: 192/197 looper letters, 49 selfloop transitions, 15 changer transitions 0/74 dead transitions. [2023-01-28 07:04:04,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 74 transitions, 798 flow [2023-01-28 07:04:04,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:04:04,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:04:04,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 387 transitions. [2023-01-28 07:04:04,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49111675126903553 [2023-01-28 07:04:04,457 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 387 transitions. [2023-01-28 07:04:04,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 387 transitions. [2023-01-28 07:04:04,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:04,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 387 transitions. [2023-01-28 07:04:04,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 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) [2023-01-28 07:04:04,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 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) [2023-01-28 07:04:04,459 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 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) [2023-01-28 07:04:04,459 INFO L175 Difference]: Start difference. First operand has 50 places, 55 transitions, 526 flow. Second operand 4 states and 387 transitions. [2023-01-28 07:04:04,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 74 transitions, 798 flow [2023-01-28 07:04:04,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 74 transitions, 784 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-28 07:04:04,466 INFO L231 Difference]: Finished difference. Result has 53 places, 59 transitions, 599 flow [2023-01-28 07:04:04,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=599, PETRI_PLACES=53, PETRI_TRANSITIONS=59} [2023-01-28 07:04:04,466 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 21 predicate places. [2023-01-28 07:04:04,466 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 59 transitions, 599 flow [2023-01-28 07:04:04,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.4) internal successors, (452), 5 states have internal predecessors, (452), 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) [2023-01-28 07:04:04,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:04,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:04,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 07:04:04,467 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:04,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:04,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1503301343, now seen corresponding path program 1 times [2023-01-28 07:04:04,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:04,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778792533] [2023-01-28 07:04:04,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:04,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:04,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:04:04,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:04,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778792533] [2023-01-28 07:04:04,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778792533] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:04,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:04,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:04:04,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085610786] [2023-01-28 07:04:04,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:04,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:04:04,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:04,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:04:04,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:04:04,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 197 [2023-01-28 07:04:04,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 59 transitions, 599 flow. Second operand has 5 states, 5 states have (on average 89.4) internal successors, (447), 5 states have internal predecessors, (447), 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) [2023-01-28 07:04:04,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:04,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 197 [2023-01-28 07:04:04,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:05,035 INFO L130 PetriNetUnfolder]: 1237/2001 cut-off events. [2023-01-28 07:04:05,036 INFO L131 PetriNetUnfolder]: For 7613/7649 co-relation queries the response was YES. [2023-01-28 07:04:05,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9307 conditions, 2001 events. 1237/2001 cut-off events. For 7613/7649 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 10179 event pairs, 197 based on Foata normal form. 36/2005 useless extension candidates. Maximal degree in co-relation 9278. Up to 1552 conditions per place. [2023-01-28 07:04:05,054 INFO L137 encePairwiseOnDemand]: 192/197 looper letters, 64 selfloop transitions, 10 changer transitions 0/84 dead transitions. [2023-01-28 07:04:05,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 84 transitions, 953 flow [2023-01-28 07:04:05,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:04:05,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:04:05,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 383 transitions. [2023-01-28 07:04:05,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4860406091370558 [2023-01-28 07:04:05,056 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 383 transitions. [2023-01-28 07:04:05,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 383 transitions. [2023-01-28 07:04:05,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:05,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 383 transitions. [2023-01-28 07:04:05,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.75) internal successors, (383), 4 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) [2023-01-28 07:04:05,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 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) [2023-01-28 07:04:05,058 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 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) [2023-01-28 07:04:05,058 INFO L175 Difference]: Start difference. First operand has 53 places, 59 transitions, 599 flow. Second operand 4 states and 383 transitions. [2023-01-28 07:04:05,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 84 transitions, 953 flow [2023-01-28 07:04:05,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 84 transitions, 939 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-28 07:04:05,069 INFO L231 Difference]: Finished difference. Result has 56 places, 63 transitions, 657 flow [2023-01-28 07:04:05,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=657, PETRI_PLACES=56, PETRI_TRANSITIONS=63} [2023-01-28 07:04:05,070 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 24 predicate places. [2023-01-28 07:04:05,071 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 63 transitions, 657 flow [2023-01-28 07:04:05,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.4) internal successors, (447), 5 states have internal predecessors, (447), 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) [2023-01-28 07:04:05,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:05,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:05,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 07:04:05,071 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:05,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:05,072 INFO L85 PathProgramCache]: Analyzing trace with hash -642346439, now seen corresponding path program 1 times [2023-01-28 07:04:05,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:05,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382367191] [2023-01-28 07:04:05,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:05,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:05,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:04:05,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:05,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382367191] [2023-01-28 07:04:05,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382367191] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:05,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:05,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 07:04:05,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114469649] [2023-01-28 07:04:05,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:05,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 07:04:05,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:05,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 07:04:05,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 07:04:05,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 197 [2023-01-28 07:04:05,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 63 transitions, 657 flow. Second operand has 6 states, 6 states have (on average 80.16666666666667) internal successors, (481), 6 states have internal predecessors, (481), 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) [2023-01-28 07:04:05,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:05,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 197 [2023-01-28 07:04:05,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:06,160 INFO L130 PetriNetUnfolder]: 1509/2351 cut-off events. [2023-01-28 07:04:06,160 INFO L131 PetriNetUnfolder]: For 9338/9338 co-relation queries the response was YES. [2023-01-28 07:04:06,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11104 conditions, 2351 events. 1509/2351 cut-off events. For 9338/9338 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 11285 event pairs, 52 based on Foata normal form. 15/2366 useless extension candidates. Maximal degree in co-relation 11073. Up to 1241 conditions per place. [2023-01-28 07:04:06,170 INFO L137 encePairwiseOnDemand]: 186/197 looper letters, 56 selfloop transitions, 42 changer transitions 10/108 dead transitions. [2023-01-28 07:04:06,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 108 transitions, 1212 flow [2023-01-28 07:04:06,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 07:04:06,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 07:04:06,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 530 transitions. [2023-01-28 07:04:06,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44839255499153974 [2023-01-28 07:04:06,173 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 530 transitions. [2023-01-28 07:04:06,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 530 transitions. [2023-01-28 07:04:06,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:06,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 530 transitions. [2023-01-28 07:04:06,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.33333333333333) internal successors, (530), 6 states have internal predecessors, (530), 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) [2023-01-28 07:04:06,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 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) [2023-01-28 07:04:06,175 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 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) [2023-01-28 07:04:06,175 INFO L175 Difference]: Start difference. First operand has 56 places, 63 transitions, 657 flow. Second operand 6 states and 530 transitions. [2023-01-28 07:04:06,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 108 transitions, 1212 flow [2023-01-28 07:04:06,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 108 transitions, 1192 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-28 07:04:06,183 INFO L231 Difference]: Finished difference. Result has 63 places, 74 transitions, 932 flow [2023-01-28 07:04:06,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=932, PETRI_PLACES=63, PETRI_TRANSITIONS=74} [2023-01-28 07:04:06,184 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 31 predicate places. [2023-01-28 07:04:06,184 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 74 transitions, 932 flow [2023-01-28 07:04:06,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 80.16666666666667) internal successors, (481), 6 states have internal predecessors, (481), 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) [2023-01-28 07:04:06,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:06,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:06,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 07:04:06,185 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:06,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:06,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1008496799, now seen corresponding path program 1 times [2023-01-28 07:04:06,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:06,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445884773] [2023-01-28 07:04:06,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:06,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:06,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:04:06,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:06,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445884773] [2023-01-28 07:04:06,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445884773] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:06,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:06,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 07:04:06,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339498023] [2023-01-28 07:04:06,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:06,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 07:04:06,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:06,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 07:04:06,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-28 07:04:06,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 197 [2023-01-28 07:04:06,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 74 transitions, 932 flow. Second operand has 6 states, 6 states have (on average 81.16666666666667) internal successors, (487), 6 states have internal predecessors, (487), 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) [2023-01-28 07:04:06,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:06,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 197 [2023-01-28 07:04:06,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:06,878 INFO L130 PetriNetUnfolder]: 1458/2272 cut-off events. [2023-01-28 07:04:06,879 INFO L131 PetriNetUnfolder]: For 13761/13761 co-relation queries the response was YES. [2023-01-28 07:04:06,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12623 conditions, 2272 events. 1458/2272 cut-off events. For 13761/13761 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 10807 event pairs, 160 based on Foata normal form. 9/2281 useless extension candidates. Maximal degree in co-relation 12588. Up to 1899 conditions per place. [2023-01-28 07:04:06,889 INFO L137 encePairwiseOnDemand]: 187/197 looper letters, 87 selfloop transitions, 43 changer transitions 12/142 dead transitions. [2023-01-28 07:04:06,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 142 transitions, 1977 flow [2023-01-28 07:04:06,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 07:04:06,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 07:04:06,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 619 transitions. [2023-01-28 07:04:06,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44887599709934733 [2023-01-28 07:04:06,891 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 619 transitions. [2023-01-28 07:04:06,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 619 transitions. [2023-01-28 07:04:06,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:06,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 619 transitions. [2023-01-28 07:04:06,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.42857142857143) internal successors, (619), 7 states have internal predecessors, (619), 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) [2023-01-28 07:04:06,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 197.0) internal successors, (1576), 8 states have internal predecessors, (1576), 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) [2023-01-28 07:04:06,894 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 197.0) internal successors, (1576), 8 states have internal predecessors, (1576), 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) [2023-01-28 07:04:06,894 INFO L175 Difference]: Start difference. First operand has 63 places, 74 transitions, 932 flow. Second operand 7 states and 619 transitions. [2023-01-28 07:04:06,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 142 transitions, 1977 flow [2023-01-28 07:04:06,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 142 transitions, 1933 flow, removed 19 selfloop flow, removed 1 redundant places. [2023-01-28 07:04:06,909 INFO L231 Difference]: Finished difference. Result has 70 places, 100 transitions, 1439 flow [2023-01-28 07:04:06,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1439, PETRI_PLACES=70, PETRI_TRANSITIONS=100} [2023-01-28 07:04:06,910 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 38 predicate places. [2023-01-28 07:04:06,910 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 100 transitions, 1439 flow [2023-01-28 07:04:06,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 81.16666666666667) internal successors, (487), 6 states have internal predecessors, (487), 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) [2023-01-28 07:04:06,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:06,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:06,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 07:04:06,910 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:06,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:06,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1005699359, now seen corresponding path program 2 times [2023-01-28 07:04:06,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:06,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984572424] [2023-01-28 07:04:06,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:06,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:07,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:04:07,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:07,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984572424] [2023-01-28 07:04:07,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984572424] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:07,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:07,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:04:07,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899503883] [2023-01-28 07:04:07,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:07,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:04:07,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:07,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:04:07,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:04:07,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 197 [2023-01-28 07:04:07,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 100 transitions, 1439 flow. Second operand has 5 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 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) [2023-01-28 07:04:07,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:07,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 197 [2023-01-28 07:04:07,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:07,341 INFO L130 PetriNetUnfolder]: 1345/2178 cut-off events. [2023-01-28 07:04:07,342 INFO L131 PetriNetUnfolder]: For 18211/18300 co-relation queries the response was YES. [2023-01-28 07:04:07,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13284 conditions, 2178 events. 1345/2178 cut-off events. For 18211/18300 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 11427 event pairs, 166 based on Foata normal form. 95/2256 useless extension candidates. Maximal degree in co-relation 13246. Up to 1517 conditions per place. [2023-01-28 07:04:07,353 INFO L137 encePairwiseOnDemand]: 190/197 looper letters, 82 selfloop transitions, 29 changer transitions 1/127 dead transitions. [2023-01-28 07:04:07,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 127 transitions, 1954 flow [2023-01-28 07:04:07,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 07:04:07,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 07:04:07,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 570 transitions. [2023-01-28 07:04:07,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48223350253807107 [2023-01-28 07:04:07,356 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 570 transitions. [2023-01-28 07:04:07,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 570 transitions. [2023-01-28 07:04:07,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:07,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 570 transitions. [2023-01-28 07:04:07,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 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) [2023-01-28 07:04:07,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 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) [2023-01-28 07:04:07,358 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 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) [2023-01-28 07:04:07,358 INFO L175 Difference]: Start difference. First operand has 70 places, 100 transitions, 1439 flow. Second operand 6 states and 570 transitions. [2023-01-28 07:04:07,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 127 transitions, 1954 flow [2023-01-28 07:04:07,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 127 transitions, 1922 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-01-28 07:04:07,380 INFO L231 Difference]: Finished difference. Result has 74 places, 108 transitions, 1637 flow [2023-01-28 07:04:07,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=1407, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1637, PETRI_PLACES=74, PETRI_TRANSITIONS=108} [2023-01-28 07:04:07,381 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 42 predicate places. [2023-01-28 07:04:07,381 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 108 transitions, 1637 flow [2023-01-28 07:04:07,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 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) [2023-01-28 07:04:07,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:07,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:07,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 07:04:07,382 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:07,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:07,382 INFO L85 PathProgramCache]: Analyzing trace with hash -643743733, now seen corresponding path program 3 times [2023-01-28 07:04:07,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:07,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424701605] [2023-01-28 07:04:07,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:07,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:07,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:04:07,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:07,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424701605] [2023-01-28 07:04:07,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424701605] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:07,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:07,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 07:04:07,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5359007] [2023-01-28 07:04:07,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:07,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 07:04:07,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:07,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 07:04:07,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-28 07:04:07,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 197 [2023-01-28 07:04:07,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 108 transitions, 1637 flow. Second operand has 6 states, 6 states have (on average 87.16666666666667) internal successors, (523), 6 states have internal predecessors, (523), 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) [2023-01-28 07:04:07,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:07,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 197 [2023-01-28 07:04:07,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:07,978 INFO L130 PetriNetUnfolder]: 1339/2183 cut-off events. [2023-01-28 07:04:07,978 INFO L131 PetriNetUnfolder]: For 20750/20913 co-relation queries the response was YES. [2023-01-28 07:04:07,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14277 conditions, 2183 events. 1339/2183 cut-off events. For 20750/20913 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 11556 event pairs, 177 based on Foata normal form. 168/2334 useless extension candidates. Maximal degree in co-relation 14237. Up to 1496 conditions per place. [2023-01-28 07:04:07,991 INFO L137 encePairwiseOnDemand]: 191/197 looper letters, 90 selfloop transitions, 20 changer transitions 1/126 dead transitions. [2023-01-28 07:04:07,991 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 126 transitions, 2072 flow [2023-01-28 07:04:07,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:04:07,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:04:07,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 459 transitions. [2023-01-28 07:04:07,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46598984771573604 [2023-01-28 07:04:07,992 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 459 transitions. [2023-01-28 07:04:07,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 459 transitions. [2023-01-28 07:04:07,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:07,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 459 transitions. [2023-01-28 07:04:07,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.8) internal successors, (459), 5 states have internal predecessors, (459), 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) [2023-01-28 07:04:07,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 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) [2023-01-28 07:04:07,995 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 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) [2023-01-28 07:04:07,995 INFO L175 Difference]: Start difference. First operand has 74 places, 108 transitions, 1637 flow. Second operand 5 states and 459 transitions. [2023-01-28 07:04:07,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 126 transitions, 2072 flow [2023-01-28 07:04:08,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 126 transitions, 2047 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-01-28 07:04:08,019 INFO L231 Difference]: Finished difference. Result has 76 places, 113 transitions, 1769 flow [2023-01-28 07:04:08,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=1612, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1769, PETRI_PLACES=76, PETRI_TRANSITIONS=113} [2023-01-28 07:04:08,019 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 44 predicate places. [2023-01-28 07:04:08,020 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 113 transitions, 1769 flow [2023-01-28 07:04:08,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.16666666666667) internal successors, (523), 6 states have internal predecessors, (523), 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) [2023-01-28 07:04:08,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:08,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:08,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 07:04:08,020 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:08,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:08,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1591098199, now seen corresponding path program 4 times [2023-01-28 07:04:08,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:08,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910729376] [2023-01-28 07:04:08,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:08,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:08,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:04:08,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:08,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910729376] [2023-01-28 07:04:08,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910729376] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:08,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:08,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 07:04:08,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782995220] [2023-01-28 07:04:08,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:08,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 07:04:08,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:08,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 07:04:08,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 07:04:08,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 197 [2023-01-28 07:04:08,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 113 transitions, 1769 flow. Second operand has 7 states, 7 states have (on average 80.85714285714286) internal successors, (566), 7 states have internal predecessors, (566), 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) [2023-01-28 07:04:08,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:08,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 197 [2023-01-28 07:04:08,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:08,722 INFO L130 PetriNetUnfolder]: 1660/2622 cut-off events. [2023-01-28 07:04:08,722 INFO L131 PetriNetUnfolder]: For 25785/25785 co-relation queries the response was YES. [2023-01-28 07:04:08,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17203 conditions, 2622 events. 1660/2622 cut-off events. For 25785/25785 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 13303 event pairs, 268 based on Foata normal form. 16/2638 useless extension candidates. Maximal degree in co-relation 17162. Up to 1611 conditions per place. [2023-01-28 07:04:08,735 INFO L137 encePairwiseOnDemand]: 190/197 looper letters, 109 selfloop transitions, 45 changer transitions 14/168 dead transitions. [2023-01-28 07:04:08,736 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 168 transitions, 2817 flow [2023-01-28 07:04:08,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 07:04:08,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 07:04:08,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 531 transitions. [2023-01-28 07:04:08,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44923857868020306 [2023-01-28 07:04:08,737 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 531 transitions. [2023-01-28 07:04:08,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 531 transitions. [2023-01-28 07:04:08,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:08,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 531 transitions. [2023-01-28 07:04:08,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.5) internal successors, (531), 6 states have internal predecessors, (531), 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) [2023-01-28 07:04:08,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 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) [2023-01-28 07:04:08,740 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 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) [2023-01-28 07:04:08,740 INFO L175 Difference]: Start difference. First operand has 76 places, 113 transitions, 1769 flow. Second operand 6 states and 531 transitions. [2023-01-28 07:04:08,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 168 transitions, 2817 flow [2023-01-28 07:04:08,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 168 transitions, 2776 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-01-28 07:04:08,775 INFO L231 Difference]: Finished difference. Result has 81 places, 117 transitions, 1940 flow [2023-01-28 07:04:08,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=1736, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1940, PETRI_PLACES=81, PETRI_TRANSITIONS=117} [2023-01-28 07:04:08,775 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 49 predicate places. [2023-01-28 07:04:08,776 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 117 transitions, 1940 flow [2023-01-28 07:04:08,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 80.85714285714286) internal successors, (566), 7 states have internal predecessors, (566), 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) [2023-01-28 07:04:08,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:08,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:08,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 07:04:08,777 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:08,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:08,777 INFO L85 PathProgramCache]: Analyzing trace with hash 933724453, now seen corresponding path program 1 times [2023-01-28 07:04:08,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:08,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839218769] [2023-01-28 07:04:08,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:08,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:09,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:04:09,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:09,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839218769] [2023-01-28 07:04:09,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839218769] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:09,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:09,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:04:09,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634107163] [2023-01-28 07:04:09,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:09,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:04:09,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:09,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:04:09,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:04:09,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 197 [2023-01-28 07:04:09,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 117 transitions, 1940 flow. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 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) [2023-01-28 07:04:09,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:09,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 197 [2023-01-28 07:04:09,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:09,681 INFO L130 PetriNetUnfolder]: 2090/3409 cut-off events. [2023-01-28 07:04:09,681 INFO L131 PetriNetUnfolder]: For 34576/34576 co-relation queries the response was YES. [2023-01-28 07:04:09,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21946 conditions, 3409 events. 2090/3409 cut-off events. For 34576/34576 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 19431 event pairs, 357 based on Foata normal form. 40/3449 useless extension candidates. Maximal degree in co-relation 21903. Up to 1583 conditions per place. [2023-01-28 07:04:09,699 INFO L137 encePairwiseOnDemand]: 187/197 looper letters, 112 selfloop transitions, 29 changer transitions 17/158 dead transitions. [2023-01-28 07:04:09,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 158 transitions, 2760 flow [2023-01-28 07:04:09,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:04:09,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:04:09,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 364 transitions. [2023-01-28 07:04:09,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619289340101523 [2023-01-28 07:04:09,701 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 364 transitions. [2023-01-28 07:04:09,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 364 transitions. [2023-01-28 07:04:09,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:09,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 364 transitions. [2023-01-28 07:04:09,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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) [2023-01-28 07:04:09,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 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) [2023-01-28 07:04:09,703 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 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) [2023-01-28 07:04:09,703 INFO L175 Difference]: Start difference. First operand has 81 places, 117 transitions, 1940 flow. Second operand 4 states and 364 transitions. [2023-01-28 07:04:09,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 158 transitions, 2760 flow [2023-01-28 07:04:09,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 158 transitions, 2706 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-01-28 07:04:09,753 INFO L231 Difference]: Finished difference. Result has 84 places, 110 transitions, 1916 flow [2023-01-28 07:04:09,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=1895, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1916, PETRI_PLACES=84, PETRI_TRANSITIONS=110} [2023-01-28 07:04:09,754 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 52 predicate places. [2023-01-28 07:04:09,754 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 110 transitions, 1916 flow [2023-01-28 07:04:09,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 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) [2023-01-28 07:04:09,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:09,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:09,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 07:04:09,755 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:09,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:09,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1198718836, now seen corresponding path program 1 times [2023-01-28 07:04:09,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:09,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767736569] [2023-01-28 07:04:09,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:09,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:10,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:04:10,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:10,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767736569] [2023-01-28 07:04:10,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767736569] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:10,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:10,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 07:04:10,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044261370] [2023-01-28 07:04:10,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:10,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 07:04:10,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:10,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 07:04:10,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 07:04:10,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 197 [2023-01-28 07:04:10,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 110 transitions, 1916 flow. Second operand has 6 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 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) [2023-01-28 07:04:10,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:10,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 197 [2023-01-28 07:04:10,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:10,650 INFO L130 PetriNetUnfolder]: 1421/2445 cut-off events. [2023-01-28 07:04:10,651 INFO L131 PetriNetUnfolder]: For 30953/31324 co-relation queries the response was YES. [2023-01-28 07:04:10,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16280 conditions, 2445 events. 1421/2445 cut-off events. For 30953/31324 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 14559 event pairs, 267 based on Foata normal form. 157/2574 useless extension candidates. Maximal degree in co-relation 16234. Up to 1468 conditions per place. [2023-01-28 07:04:10,663 INFO L137 encePairwiseOnDemand]: 191/197 looper letters, 75 selfloop transitions, 39 changer transitions 30/150 dead transitions. [2023-01-28 07:04:10,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 150 transitions, 2650 flow [2023-01-28 07:04:10,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 07:04:10,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 07:04:10,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 643 transitions. [2023-01-28 07:04:10,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4662799129804206 [2023-01-28 07:04:10,665 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 643 transitions. [2023-01-28 07:04:10,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 643 transitions. [2023-01-28 07:04:10,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:10,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 643 transitions. [2023-01-28 07:04:10,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.85714285714286) internal successors, (643), 7 states have internal predecessors, (643), 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) [2023-01-28 07:04:10,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 197.0) internal successors, (1576), 8 states have internal predecessors, (1576), 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) [2023-01-28 07:04:10,669 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 197.0) internal successors, (1576), 8 states have internal predecessors, (1576), 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) [2023-01-28 07:04:10,669 INFO L175 Difference]: Start difference. First operand has 84 places, 110 transitions, 1916 flow. Second operand 7 states and 643 transitions. [2023-01-28 07:04:10,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 150 transitions, 2650 flow [2023-01-28 07:04:10,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 150 transitions, 2599 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 07:04:10,710 INFO L231 Difference]: Finished difference. Result has 91 places, 93 transitions, 1715 flow [2023-01-28 07:04:10,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=1872, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1715, PETRI_PLACES=91, PETRI_TRANSITIONS=93} [2023-01-28 07:04:10,712 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 59 predicate places. [2023-01-28 07:04:10,712 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 93 transitions, 1715 flow [2023-01-28 07:04:10,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 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) [2023-01-28 07:04:10,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:10,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:10,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-28 07:04:10,713 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:10,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:10,713 INFO L85 PathProgramCache]: Analyzing trace with hash -597213392, now seen corresponding path program 1 times [2023-01-28 07:04:10,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:10,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967712802] [2023-01-28 07:04:10,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:10,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:10,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:04:10,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:10,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967712802] [2023-01-28 07:04:10,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967712802] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:10,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:10,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:04:10,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031620512] [2023-01-28 07:04:10,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:10,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:04:10,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:10,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:04:10,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:04:10,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 197 [2023-01-28 07:04:10,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 93 transitions, 1715 flow. Second operand has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 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) [2023-01-28 07:04:10,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:10,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 197 [2023-01-28 07:04:10,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:10,987 INFO L130 PetriNetUnfolder]: 513/950 cut-off events. [2023-01-28 07:04:10,988 INFO L131 PetriNetUnfolder]: For 19063/19232 co-relation queries the response was YES. [2023-01-28 07:04:10,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6577 conditions, 950 events. 513/950 cut-off events. For 19063/19232 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5197 event pairs, 76 based on Foata normal form. 293/1240 useless extension candidates. Maximal degree in co-relation 6528. Up to 576 conditions per place. [2023-01-28 07:04:10,992 INFO L137 encePairwiseOnDemand]: 191/197 looper letters, 72 selfloop transitions, 4 changer transitions 62/146 dead transitions. [2023-01-28 07:04:10,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 146 transitions, 2874 flow [2023-01-28 07:04:10,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:04:10,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:04:10,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 466 transitions. [2023-01-28 07:04:10,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4730964467005076 [2023-01-28 07:04:10,994 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 466 transitions. [2023-01-28 07:04:10,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 466 transitions. [2023-01-28 07:04:10,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:10,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 466 transitions. [2023-01-28 07:04:10,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.2) internal successors, (466), 5 states have internal predecessors, (466), 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) [2023-01-28 07:04:10,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 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) [2023-01-28 07:04:10,998 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 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) [2023-01-28 07:04:10,998 INFO L175 Difference]: Start difference. First operand has 91 places, 93 transitions, 1715 flow. Second operand 5 states and 466 transitions. [2023-01-28 07:04:10,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 146 transitions, 2874 flow [2023-01-28 07:04:11,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 146 transitions, 2432 flow, removed 89 selfloop flow, removed 17 redundant places. [2023-01-28 07:04:11,014 INFO L231 Difference]: Finished difference. Result has 81 places, 66 transitions, 987 flow [2023-01-28 07:04:11,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=931, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=987, PETRI_PLACES=81, PETRI_TRANSITIONS=66} [2023-01-28 07:04:11,014 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 49 predicate places. [2023-01-28 07:04:11,014 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 66 transitions, 987 flow [2023-01-28 07:04:11,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 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) [2023-01-28 07:04:11,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:11,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:11,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-28 07:04:11,015 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:11,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:11,015 INFO L85 PathProgramCache]: Analyzing trace with hash 157601065, now seen corresponding path program 1 times [2023-01-28 07:04:11,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:11,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84619106] [2023-01-28 07:04:11,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:11,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:11,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:04:11,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:11,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84619106] [2023-01-28 07:04:11,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84619106] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:11,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:11,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 07:04:11,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334584474] [2023-01-28 07:04:11,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:11,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:04:11,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:11,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:04:11,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:04:11,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 197 [2023-01-28 07:04:11,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 66 transitions, 987 flow. Second operand has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:11,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:11,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 197 [2023-01-28 07:04:11,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:11,247 INFO L130 PetriNetUnfolder]: 238/489 cut-off events. [2023-01-28 07:04:11,247 INFO L131 PetriNetUnfolder]: For 8386/8475 co-relation queries the response was YES. [2023-01-28 07:04:11,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3189 conditions, 489 events. 238/489 cut-off events. For 8386/8475 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2454 event pairs, 10 based on Foata normal form. 164/651 useless extension candidates. Maximal degree in co-relation 3148. Up to 228 conditions per place. [2023-01-28 07:04:11,249 INFO L137 encePairwiseOnDemand]: 191/197 looper letters, 71 selfloop transitions, 7 changer transitions 40/126 dead transitions. [2023-01-28 07:04:11,250 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 126 transitions, 2043 flow [2023-01-28 07:04:11,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 07:04:11,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 07:04:11,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 556 transitions. [2023-01-28 07:04:11,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4703891708967851 [2023-01-28 07:04:11,251 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 556 transitions. [2023-01-28 07:04:11,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 556 transitions. [2023-01-28 07:04:11,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:11,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 556 transitions. [2023-01-28 07:04:11,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.66666666666667) internal successors, (556), 6 states have internal predecessors, (556), 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) [2023-01-28 07:04:11,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 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) [2023-01-28 07:04:11,254 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 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) [2023-01-28 07:04:11,254 INFO L175 Difference]: Start difference. First operand has 81 places, 66 transitions, 987 flow. Second operand 6 states and 556 transitions. [2023-01-28 07:04:11,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 126 transitions, 2043 flow [2023-01-28 07:04:11,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 126 transitions, 1947 flow, removed 25 selfloop flow, removed 6 redundant places. [2023-01-28 07:04:11,263 INFO L231 Difference]: Finished difference. Result has 81 places, 62 transitions, 851 flow [2023-01-28 07:04:11,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=851, PETRI_PLACES=81, PETRI_TRANSITIONS=62} [2023-01-28 07:04:11,263 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 49 predicate places. [2023-01-28 07:04:11,263 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 62 transitions, 851 flow [2023-01-28 07:04:11,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:11,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:11,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:11,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-28 07:04:11,264 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:11,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:11,264 INFO L85 PathProgramCache]: Analyzing trace with hash 427456573, now seen corresponding path program 1 times [2023-01-28 07:04:11,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:11,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423105407] [2023-01-28 07:04:11,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:11,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:11,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:04:11,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:11,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423105407] [2023-01-28 07:04:11,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423105407] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:11,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:11,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 07:04:11,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457711791] [2023-01-28 07:04:11,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:11,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 07:04:11,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:11,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 07:04:11,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 07:04:11,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 197 [2023-01-28 07:04:11,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 62 transitions, 851 flow. Second operand has 6 states, 6 states have (on average 86.5) internal successors, (519), 6 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:11,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:11,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 197 [2023-01-28 07:04:11,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:11,470 INFO L130 PetriNetUnfolder]: 121/278 cut-off events. [2023-01-28 07:04:11,470 INFO L131 PetriNetUnfolder]: For 3176/3234 co-relation queries the response was YES. [2023-01-28 07:04:11,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1858 conditions, 278 events. 121/278 cut-off events. For 3176/3234 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1232 event pairs, 4 based on Foata normal form. 71/346 useless extension candidates. Maximal degree in co-relation 1817. Up to 126 conditions per place. [2023-01-28 07:04:11,471 INFO L137 encePairwiseOnDemand]: 191/197 looper letters, 36 selfloop transitions, 10 changer transitions 44/94 dead transitions. [2023-01-28 07:04:11,471 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 94 transitions, 1413 flow [2023-01-28 07:04:11,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 07:04:11,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 07:04:11,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 632 transitions. [2023-01-28 07:04:11,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45830311820159536 [2023-01-28 07:04:11,474 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 632 transitions. [2023-01-28 07:04:11,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 632 transitions. [2023-01-28 07:04:11,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:11,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 632 transitions. [2023-01-28 07:04:11,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.28571428571429) internal successors, (632), 7 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:11,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 197.0) internal successors, (1576), 8 states have internal predecessors, (1576), 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) [2023-01-28 07:04:11,477 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 197.0) internal successors, (1576), 8 states have internal predecessors, (1576), 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) [2023-01-28 07:04:11,477 INFO L175 Difference]: Start difference. First operand has 81 places, 62 transitions, 851 flow. Second operand 7 states and 632 transitions. [2023-01-28 07:04:11,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 94 transitions, 1413 flow [2023-01-28 07:04:11,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 94 transitions, 1227 flow, removed 47 selfloop flow, removed 10 redundant places. [2023-01-28 07:04:11,482 INFO L231 Difference]: Finished difference. Result has 78 places, 35 transitions, 351 flow [2023-01-28 07:04:11,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=351, PETRI_PLACES=78, PETRI_TRANSITIONS=35} [2023-01-28 07:04:11,483 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 46 predicate places. [2023-01-28 07:04:11,483 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 35 transitions, 351 flow [2023-01-28 07:04:11,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.5) internal successors, (519), 6 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:11,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:11,483 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] [2023-01-28 07:04:11,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-28 07:04:11,483 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-28 07:04:11,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:11,484 INFO L85 PathProgramCache]: Analyzing trace with hash -554742058, now seen corresponding path program 1 times [2023-01-28 07:04:11,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:11,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825156779] [2023-01-28 07:04:11,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:11,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 07:04:11,504 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 07:04:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 07:04:11,565 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 07:04:11,566 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 07:04:11,566 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-01-28 07:04:11,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-01-28 07:04:11,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-01-28 07:04:11,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-01-28 07:04:11,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-01-28 07:04:11,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-01-28 07:04:11,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-28 07:04:11,570 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:11,574 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 07:04:11,574 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 07:04:11,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 07:04:11 BasicIcfg [2023-01-28 07:04:11,628 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 07:04:11,628 INFO L158 Benchmark]: Toolchain (without parser) took 16714.82ms. Allocated memory was 713.0MB in the beginning and 1.3GB in the end (delta: 625.0MB). Free memory was 660.1MB in the beginning and 573.5MB in the end (delta: 86.6MB). Peak memory consumption was 711.0MB. Max. memory is 16.0GB. [2023-01-28 07:04:11,628 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 358.6MB. Free memory is still 305.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 07:04:11,628 INFO L158 Benchmark]: CACSL2BoogieTranslator took 431.98ms. Allocated memory is still 713.0MB. Free memory was 659.7MB in the beginning and 637.1MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-01-28 07:04:11,628 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.49ms. Allocated memory is still 713.0MB. Free memory was 637.1MB in the beginning and 634.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:04:11,629 INFO L158 Benchmark]: Boogie Preprocessor took 21.19ms. Allocated memory is still 713.0MB. Free memory was 634.6MB in the beginning and 632.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:04:11,629 INFO L158 Benchmark]: RCFGBuilder took 608.97ms. Allocated memory is still 713.0MB. Free memory was 632.5MB in the beginning and 597.8MB in the end (delta: 34.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. [2023-01-28 07:04:11,629 INFO L158 Benchmark]: TraceAbstraction took 15608.98ms. Allocated memory was 713.0MB in the beginning and 1.3GB in the end (delta: 625.0MB). Free memory was 596.8MB in the beginning and 573.5MB in the end (delta: 23.3MB). Peak memory consumption was 648.1MB. Max. memory is 16.0GB. [2023-01-28 07:04:11,630 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 358.6MB. Free memory is still 305.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 431.98ms. Allocated memory is still 713.0MB. Free memory was 659.7MB in the beginning and 637.1MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 37.49ms. Allocated memory is still 713.0MB. Free memory was 637.1MB in the beginning and 634.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 21.19ms. Allocated memory is still 713.0MB. Free memory was 634.6MB in the beginning and 632.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 608.97ms. Allocated memory is still 713.0MB. Free memory was 632.5MB in the beginning and 597.8MB in the end (delta: 34.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. * TraceAbstraction took 15608.98ms. Allocated memory was 713.0MB in the beginning and 1.3GB in the end (delta: 625.0MB). Free memory was 596.8MB in the beginning and 573.5MB in the end (delta: 23.3MB). Peak memory consumption was 648.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.2s, 110 PlacesBefore, 32 PlacesAfterwards, 102 TransitionsBefore, 22 TransitionsAfterwards, 1776 CoEnabledTransitionPairs, 7 FixpointIterations, 36 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 92 TotalNumberOfCompositions, 4534 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1956, independent: 1791, independent conditional: 0, independent unconditional: 1791, dependent: 165, dependent conditional: 0, dependent unconditional: 165, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 993, independent: 945, independent conditional: 0, independent unconditional: 945, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1956, independent: 846, independent conditional: 0, independent unconditional: 846, dependent: 117, dependent conditional: 0, dependent unconditional: 117, unknown: 993, unknown conditional: 0, unknown unconditional: 993] , Statistics on independence cache: Total cache size (in pairs): 58, Positive cache size: 44, Positive conditional cache size: 0, Positive unconditional cache size: 44, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L710] 0 _Bool main$tmp_guard0; [L711] 0 _Bool main$tmp_guard1; [L713] 0 int x = 0; [L715] 0 int y = 0; [L716] 0 _Bool y$flush_delayed; [L717] 0 int y$mem_tmp; [L718] 0 _Bool y$r_buff0_thd0; [L719] 0 _Bool y$r_buff0_thd1; [L720] 0 _Bool y$r_buff0_thd2; [L721] 0 _Bool y$r_buff0_thd3; [L722] 0 _Bool y$r_buff1_thd0; [L723] 0 _Bool y$r_buff1_thd1; [L724] 0 _Bool y$r_buff1_thd2; [L725] 0 _Bool y$r_buff1_thd3; [L726] 0 _Bool y$read_delayed; [L727] 0 int *y$read_delayed_var; [L728] 0 int y$w_buff0; [L729] 0 _Bool y$w_buff0_used; [L730] 0 int y$w_buff1; [L731] 0 _Bool y$w_buff1_used; [L733] 0 int z = 0; [L734] 0 _Bool weak$$choice0; [L735] 0 _Bool weak$$choice2; [L811] 0 pthread_t t2492; [L812] FCALL, FORK 0 pthread_create(&t2492, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2492, ((void *)0), P0, ((void *)0))=-2, t2492={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L813] 0 pthread_t t2493; [L814] FCALL, FORK 0 pthread_create(&t2493, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2493, ((void *)0), P1, ((void *)0))=-1, t2492={5:0}, t2493={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L815] 0 pthread_t t2494; [L816] FCALL, FORK 0 pthread_create(&t2494, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2494, ((void *)0), P2, ((void *)0))=0, t2492={5:0}, t2493={6:0}, t2494={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L774] 3 y$w_buff1 = y$w_buff0 [L775] 3 y$w_buff0 = 2 [L776] 3 y$w_buff1_used = y$w_buff0_used [L777] 3 y$w_buff0_used = (_Bool)1 [L778] CALL 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 3 !(!expression) [L778] RET 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L779] 3 y$r_buff1_thd0 = y$r_buff0_thd0 [L780] 3 y$r_buff1_thd1 = y$r_buff0_thd1 [L781] 3 y$r_buff1_thd2 = y$r_buff0_thd2 [L782] 3 y$r_buff1_thd3 = y$r_buff0_thd3 [L783] 3 y$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L786] 3 z = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L739] 1 z = 2 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=2] [L742] 1 x = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=2] [L754] 2 x = 2 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=2] [L757] 2 y = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1, z=2] [L760] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L761] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L762] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L763] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L764] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1, z=2] [L789] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L790] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L791] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L792] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L793] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=2] [L767] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L769] 2 return 0; [L747] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L749] 1 return 0; [L796] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L798] 3 return 0; [L818] 0 main$tmp_guard0 = __unbuffered_cnt == 3 [L820] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L820] RET 0 assume_abort_if_not(main$tmp_guard0) [L822] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L823] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L824] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L825] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L826] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=3, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2492={5:0}, t2493={6:0}, t2494={3:0}, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=2] [L829] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L830] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L831] 0 y$flush_delayed = weak$$choice2 [L832] 0 y$mem_tmp = y [L833] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L834] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L835] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L836] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L837] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L838] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L839] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L840] 0 main$tmp_guard1 = !(x == 2 && y == 2 && z == 2) [L841] 0 y = y$flush_delayed ? y$mem_tmp : y [L842] 0 y$flush_delayed = (_Bool)0 [L844] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=0, \old(expression)=1, \result={0:0}, \result={0:0}, __unbuffered_cnt=3, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, expression=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=2] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 814]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 812]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 816]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 131 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: 15.4s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 362 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 362 mSDsluCounter, 91 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 47 mSDsCounter, 90 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1220 IncrementalHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 90 mSolverCounterUnsat, 44 mSDtfsCounter, 1220 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1940occurred in iteration=13, InterpolantAutomatonStates: 89, 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, 0.4s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 242 NumberOfCodeBlocks, 242 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 204 ConstructedInterpolants, 0 QuantifiedInterpolants, 2269 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 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 RESULT: Ultimate proved your program to be incorrect! [2023-01-28 07:04:11,651 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...