/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/weaver/popl20-bad-threaded-sum-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 10:12:17,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 10:12:17,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 10:12:17,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 10:12:17,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 10:12:17,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 10:12:17,868 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 10:12:17,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 10:12:17,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 10:12:17,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 10:12:17,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 10:12:17,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 10:12:17,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 10:12:17,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 10:12:17,884 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 10:12:17,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 10:12:17,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 10:12:17,886 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 10:12:17,888 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 10:12:17,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 10:12:17,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 10:12:17,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 10:12:17,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 10:12:17,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 10:12:17,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 10:12:17,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 10:12:17,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 10:12:17,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 10:12:17,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 10:12:17,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 10:12:17,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 10:12:17,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 10:12:17,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 10:12:17,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 10:12:17,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 10:12:17,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 10:12:17,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 10:12:17,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 10:12:17,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 10:12:17,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 10:12:17,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 10:12:17,912 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 10:12:17,933 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 10:12:17,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 10:12:17,934 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 10:12:17,934 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 10:12:17,935 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 10:12:17,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 10:12:17,935 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 10:12:17,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 10:12:17,935 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 10:12:17,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 10:12:17,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 10:12:17,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 10:12:17,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 10:12:17,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 10:12:17,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 10:12:17,937 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 10:12:17,937 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 10:12:17,937 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 10:12:17,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 10:12:17,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 10:12:17,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 10:12:17,937 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 10:12:17,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 10:12:17,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 10:12:17,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 10:12:17,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 10:12:17,938 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 10:12:17,938 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 10:12:17,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 10:12:17,938 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 10:12:17,939 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 10:12:17,939 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 10:12:18,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 10:12:18,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 10:12:18,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 10:12:18,160 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 10:12:18,160 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 10:12:18,161 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c [2023-01-28 10:12:19,188 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 10:12:19,330 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 10:12:19,330 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c [2023-01-28 10:12:19,335 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f757f675/7e944ea62eb54df9bfc783778bcdbd26/FLAG01c1d410a [2023-01-28 10:12:19,347 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f757f675/7e944ea62eb54df9bfc783778bcdbd26 [2023-01-28 10:12:19,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 10:12:19,350 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 10:12:19,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 10:12:19,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 10:12:19,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 10:12:19,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 10:12:19" (1/1) ... [2023-01-28 10:12:19,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64c45ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:12:19, skipping insertion in model container [2023-01-28 10:12:19,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 10:12:19" (1/1) ... [2023-01-28 10:12:19,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 10:12:19,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 10:12:19,503 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c[2476,2489] [2023-01-28 10:12:19,507 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 10:12:19,515 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 10:12:19,533 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c[2476,2489] [2023-01-28 10:12:19,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 10:12:19,540 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 10:12:19,540 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 10:12:19,544 INFO L208 MainTranslator]: Completed translation [2023-01-28 10:12:19,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:12:19 WrapperNode [2023-01-28 10:12:19,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 10:12:19,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 10:12:19,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 10:12:19,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 10:12:19,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:12:19" (1/1) ... [2023-01-28 10:12:19,557 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:12:19" (1/1) ... [2023-01-28 10:12:19,570 INFO L138 Inliner]: procedures = 21, calls = 34, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2023-01-28 10:12:19,571 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 10:12:19,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 10:12:19,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 10:12:19,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 10:12:19,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:12:19" (1/1) ... [2023-01-28 10:12:19,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:12:19" (1/1) ... [2023-01-28 10:12:19,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:12:19" (1/1) ... [2023-01-28 10:12:19,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:12:19" (1/1) ... [2023-01-28 10:12:19,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:12:19" (1/1) ... [2023-01-28 10:12:19,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:12:19" (1/1) ... [2023-01-28 10:12:19,602 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:12:19" (1/1) ... [2023-01-28 10:12:19,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:12:19" (1/1) ... [2023-01-28 10:12:19,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 10:12:19,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 10:12:19,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 10:12:19,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 10:12:19,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:12:19" (1/1) ... [2023-01-28 10:12:19,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 10:12:19,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:12:19,635 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 10:12:19,640 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 10:12:19,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 10:12:19,664 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 10:12:19,665 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 10:12:19,665 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 10:12:19,665 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 10:12:19,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 10:12:19,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 10:12:19,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 10:12:19,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 10:12:19,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 10:12:19,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 10:12:19,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 10:12:19,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 10:12:19,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 10:12:19,667 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 10:12:19,800 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 10:12:19,801 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 10:12:19,978 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 10:12:20,061 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 10:12:20,062 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-28 10:12:20,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 10:12:20 BoogieIcfgContainer [2023-01-28 10:12:20,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 10:12:20,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 10:12:20,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 10:12:20,068 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 10:12:20,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 10:12:19" (1/3) ... [2023-01-28 10:12:20,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df22c0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 10:12:20, skipping insertion in model container [2023-01-28 10:12:20,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:12:19" (2/3) ... [2023-01-28 10:12:20,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df22c0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 10:12:20, skipping insertion in model container [2023-01-28 10:12:20,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 10:12:20" (3/3) ... [2023-01-28 10:12:20,070 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-threaded-sum-2.wvr.c [2023-01-28 10:12:20,081 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 10:12:20,081 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 10:12:20,082 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 10:12:20,145 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 10:12:20,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 83 transitions, 182 flow [2023-01-28 10:12:20,244 INFO L130 PetriNetUnfolder]: 6/81 cut-off events. [2023-01-28 10:12:20,244 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 10:12:20,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 81 events. 6/81 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 41 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2023-01-28 10:12:20,250 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 83 transitions, 182 flow [2023-01-28 10:12:20,254 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 73 transitions, 158 flow [2023-01-28 10:12:20,257 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 10:12:20,265 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 73 transitions, 158 flow [2023-01-28 10:12:20,267 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 73 transitions, 158 flow [2023-01-28 10:12:20,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 73 transitions, 158 flow [2023-01-28 10:12:20,285 INFO L130 PetriNetUnfolder]: 6/73 cut-off events. [2023-01-28 10:12:20,285 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 10:12:20,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 73 events. 6/73 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2023-01-28 10:12:20,287 INFO L119 LiptonReduction]: Number of co-enabled transitions 396 [2023-01-28 10:12:22,196 INFO L134 LiptonReduction]: Checked pairs total: 617 [2023-01-28 10:12:22,196 INFO L136 LiptonReduction]: Total number of compositions: 65 [2023-01-28 10:12:22,209 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 10:12:22,214 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;@2ed246af, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 10:12:22,214 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 10:12:22,219 INFO L130 PetriNetUnfolder]: 2/16 cut-off events. [2023-01-28 10:12:22,219 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 10:12:22,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:12:22,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:12:22,220 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:12:22,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:12:22,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1488220568, now seen corresponding path program 1 times [2023-01-28 10:12:22,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:12:22,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121502679] [2023-01-28 10:12:22,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:12:22,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:12:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:12:22,857 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 10:12:22,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:12:22,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121502679] [2023-01-28 10:12:22,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121502679] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:12:22,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:12:22,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 10:12:22,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560956425] [2023-01-28 10:12:22,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:12:22,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 10:12:22,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:12:22,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 10:12:22,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 10:12:22,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 148 [2023-01-28 10:12:22,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 0 states have call successors, (0), 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 10:12:22,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:12:22,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 148 [2023-01-28 10:12:22,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:12:22,984 INFO L130 PetriNetUnfolder]: 88/157 cut-off events. [2023-01-28 10:12:22,985 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 10:12:22,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 157 events. 88/157 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 433 event pairs, 18 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 270. Up to 120 conditions per place. [2023-01-28 10:12:22,988 INFO L137 encePairwiseOnDemand]: 143/148 looper letters, 28 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2023-01-28 10:12:22,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 33 transitions, 153 flow [2023-01-28 10:12:22,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 10:12:22,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 10:12:22,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 266 transitions. [2023-01-28 10:12:23,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44932432432432434 [2023-01-28 10:12:23,005 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 266 transitions. [2023-01-28 10:12:23,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 266 transitions. [2023-01-28 10:12:23,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:12:23,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 266 transitions. [2023-01-28 10:12:23,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 0 states have call successors, (0), 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 10:12:23,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 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 10:12:23,020 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 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 10:12:23,022 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 46 flow. Second operand 4 states and 266 transitions. [2023-01-28 10:12:23,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 33 transitions, 153 flow [2023-01-28 10:12:23,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 33 transitions, 139 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 10:12:23,030 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 70 flow [2023-01-28 10:12:23,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=23, PETRI_TRANSITIONS=21} [2023-01-28 10:12:23,036 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 1 predicate places. [2023-01-28 10:12:23,036 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 70 flow [2023-01-28 10:12:23,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 0 states have call successors, (0), 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 10:12:23,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:12:23,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:12:23,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 10:12:23,038 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:12:23,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:12:23,040 INFO L85 PathProgramCache]: Analyzing trace with hash 772847751, now seen corresponding path program 1 times [2023-01-28 10:12:23,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:12:23,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564515578] [2023-01-28 10:12:23,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:12:23,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:12:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:12:23,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:12:23,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:12:23,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564515578] [2023-01-28 10:12:23,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564515578] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:12:23,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961977347] [2023-01-28 10:12:23,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:12:23,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:12:23,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:12:23,305 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:12:23,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 10:12:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:12:23,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 10:12:23,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:12:23,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:12:23,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:12:24,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:12:24,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961977347] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:12:24,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:12:24,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 9 [2023-01-28 10:12:24,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201381311] [2023-01-28 10:12:24,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:12:24,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 10:12:24,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:12:24,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 10:12:24,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-01-28 10:12:24,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 148 [2023-01-28 10:12:24,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 70 flow. Second operand has 10 states, 10 states have (on average 59.3) internal successors, (593), 10 states have internal predecessors, (593), 0 states have call successors, (0), 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 10:12:24,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:12:24,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 148 [2023-01-28 10:12:24,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:12:24,278 INFO L130 PetriNetUnfolder]: 111/200 cut-off events. [2023-01-28 10:12:24,278 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2023-01-28 10:12:24,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503 conditions, 200 events. 111/200 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 547 event pairs, 4 based on Foata normal form. 20/202 useless extension candidates. Maximal degree in co-relation 161. Up to 66 conditions per place. [2023-01-28 10:12:24,284 INFO L137 encePairwiseOnDemand]: 139/148 looper letters, 44 selfloop transitions, 18 changer transitions 0/62 dead transitions. [2023-01-28 10:12:24,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 62 transitions, 307 flow [2023-01-28 10:12:24,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 10:12:24,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 10:12:24,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 740 transitions. [2023-01-28 10:12:24,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-01-28 10:12:24,289 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 740 transitions. [2023-01-28 10:12:24,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 740 transitions. [2023-01-28 10:12:24,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:12:24,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 740 transitions. [2023-01-28 10:12:24,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 61.666666666666664) internal successors, (740), 12 states have internal predecessors, (740), 0 states have call successors, (0), 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 10:12:24,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 148.0) internal successors, (1924), 13 states have internal predecessors, (1924), 0 states have call successors, (0), 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 10:12:24,297 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 148.0) internal successors, (1924), 13 states have internal predecessors, (1924), 0 states have call successors, (0), 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 10:12:24,297 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 70 flow. Second operand 12 states and 740 transitions. [2023-01-28 10:12:24,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 62 transitions, 307 flow [2023-01-28 10:12:24,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 62 transitions, 307 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 10:12:24,299 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 174 flow [2023-01-28 10:12:24,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=174, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2023-01-28 10:12:24,300 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 18 predicate places. [2023-01-28 10:12:24,300 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 174 flow [2023-01-28 10:12:24,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 59.3) internal successors, (593), 10 states have internal predecessors, (593), 0 states have call successors, (0), 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 10:12:24,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:12:24,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:12:24,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 10:12:24,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:12:24,509 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:12:24,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:12:24,510 INFO L85 PathProgramCache]: Analyzing trace with hash -800121287, now seen corresponding path program 1 times [2023-01-28 10:12:24,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:12:24,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839309588] [2023-01-28 10:12:24,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:12:24,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:12:24,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:12:25,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:12:25,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:12:25,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839309588] [2023-01-28 10:12:25,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839309588] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:12:25,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953071422] [2023-01-28 10:12:25,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:12:25,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:12:25,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:12:25,129 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:12:25,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 10:12:25,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:12:25,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 26 conjunts are in the unsatisfiable core [2023-01-28 10:12:25,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:12:25,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:12:25,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:12:25,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:12:25,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953071422] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:12:25,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:12:25,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-01-28 10:12:25,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849013454] [2023-01-28 10:12:25,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:12:25,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 10:12:25,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:12:25,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 10:12:25,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2023-01-28 10:12:25,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 148 [2023-01-28 10:12:25,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 174 flow. Second operand has 20 states, 20 states have (on average 54.25) internal successors, (1085), 20 states have internal predecessors, (1085), 0 states have call successors, (0), 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 10:12:25,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:12:25,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 148 [2023-01-28 10:12:25,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:12:27,581 INFO L130 PetriNetUnfolder]: 429/757 cut-off events. [2023-01-28 10:12:27,581 INFO L131 PetriNetUnfolder]: For 1007/1007 co-relation queries the response was YES. [2023-01-28 10:12:27,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2625 conditions, 757 events. 429/757 cut-off events. For 1007/1007 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3329 event pairs, 12 based on Foata normal form. 5/762 useless extension candidates. Maximal degree in co-relation 1497. Up to 203 conditions per place. [2023-01-28 10:12:27,586 INFO L137 encePairwiseOnDemand]: 138/148 looper letters, 97 selfloop transitions, 94 changer transitions 34/225 dead transitions. [2023-01-28 10:12:27,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 225 transitions, 1551 flow [2023-01-28 10:12:27,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-01-28 10:12:27,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-01-28 10:12:27,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 2121 transitions. [2023-01-28 10:12:27,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38732651570489407 [2023-01-28 10:12:27,592 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 2121 transitions. [2023-01-28 10:12:27,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 2121 transitions. [2023-01-28 10:12:27,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:12:27,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 2121 transitions. [2023-01-28 10:12:27,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 57.32432432432432) internal successors, (2121), 37 states have internal predecessors, (2121), 0 states have call successors, (0), 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 10:12:27,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 148.0) internal successors, (5624), 38 states have internal predecessors, (5624), 0 states have call successors, (0), 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 10:12:27,604 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 148.0) internal successors, (5624), 38 states have internal predecessors, (5624), 0 states have call successors, (0), 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 10:12:27,605 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 174 flow. Second operand 37 states and 2121 transitions. [2023-01-28 10:12:27,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 225 transitions, 1551 flow [2023-01-28 10:12:27,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 225 transitions, 1496 flow, removed 21 selfloop flow, removed 3 redundant places. [2023-01-28 10:12:27,613 INFO L231 Difference]: Finished difference. Result has 92 places, 127 transitions, 1097 flow [2023-01-28 10:12:27,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1097, PETRI_PLACES=92, PETRI_TRANSITIONS=127} [2023-01-28 10:12:27,614 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 70 predicate places. [2023-01-28 10:12:27,614 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 127 transitions, 1097 flow [2023-01-28 10:12:27,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 54.25) internal successors, (1085), 20 states have internal predecessors, (1085), 0 states have call successors, (0), 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 10:12:27,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:12:27,615 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:12:27,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 10:12:27,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-01-28 10:12:27,821 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:12:27,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:12:27,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1631516584, now seen corresponding path program 2 times [2023-01-28 10:12:27,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:12:27,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919591571] [2023-01-28 10:12:27,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:12:27,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:12:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:12:27,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:12:27,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:12:27,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919591571] [2023-01-28 10:12:27,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919591571] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:12:27,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:12:27,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 10:12:27,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93351019] [2023-01-28 10:12:27,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:12:27,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 10:12:27,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:12:27,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 10:12:27,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 10:12:27,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 148 [2023-01-28 10:12:27,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 127 transitions, 1097 flow. Second operand has 5 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 0 states have call successors, (0), 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 10:12:27,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:12:27,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 148 [2023-01-28 10:12:27,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:12:28,224 INFO L130 PetriNetUnfolder]: 503/890 cut-off events. [2023-01-28 10:12:28,224 INFO L131 PetriNetUnfolder]: For 4815/4815 co-relation queries the response was YES. [2023-01-28 10:12:28,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4378 conditions, 890 events. 503/890 cut-off events. For 4815/4815 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4069 event pairs, 72 based on Foata normal form. 8/898 useless extension candidates. Maximal degree in co-relation 4308. Up to 343 conditions per place. [2023-01-28 10:12:28,233 INFO L137 encePairwiseOnDemand]: 143/148 looper letters, 148 selfloop transitions, 68 changer transitions 0/216 dead transitions. [2023-01-28 10:12:28,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 216 transitions, 2256 flow [2023-01-28 10:12:28,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 10:12:28,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 10:12:28,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 472 transitions. [2023-01-28 10:12:28,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4555984555984556 [2023-01-28 10:12:28,235 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 472 transitions. [2023-01-28 10:12:28,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 472 transitions. [2023-01-28 10:12:28,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:12:28,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 472 transitions. [2023-01-28 10:12:28,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 67.42857142857143) internal successors, (472), 7 states have internal predecessors, (472), 0 states have call successors, (0), 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 10:12:28,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 148.0) internal successors, (1184), 8 states have internal predecessors, (1184), 0 states have call successors, (0), 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 10:12:28,239 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 148.0) internal successors, (1184), 8 states have internal predecessors, (1184), 0 states have call successors, (0), 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 10:12:28,239 INFO L175 Difference]: Start difference. First operand has 92 places, 127 transitions, 1097 flow. Second operand 7 states and 472 transitions. [2023-01-28 10:12:28,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 216 transitions, 2256 flow [2023-01-28 10:12:28,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 216 transitions, 1915 flow, removed 156 selfloop flow, removed 11 redundant places. [2023-01-28 10:12:28,268 INFO L231 Difference]: Finished difference. Result has 88 places, 164 transitions, 1486 flow [2023-01-28 10:12:28,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1486, PETRI_PLACES=88, PETRI_TRANSITIONS=164} [2023-01-28 10:12:28,268 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 66 predicate places. [2023-01-28 10:12:28,269 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 164 transitions, 1486 flow [2023-01-28 10:12:28,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 0 states have call successors, (0), 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 10:12:28,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:12:28,269 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:12:28,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 10:12:28,269 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:12:28,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:12:28,270 INFO L85 PathProgramCache]: Analyzing trace with hash 624053438, now seen corresponding path program 3 times [2023-01-28 10:12:28,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:12:28,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082066671] [2023-01-28 10:12:28,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:12:28,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:12:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:12:28,431 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:12:28,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:12:28,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082066671] [2023-01-28 10:12:28,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082066671] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:12:28,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:12:28,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 10:12:28,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224635491] [2023-01-28 10:12:28,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:12:28,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 10:12:28,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:12:28,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 10:12:28,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 10:12:28,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 148 [2023-01-28 10:12:28,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 164 transitions, 1486 flow. Second operand has 5 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 0 states have call successors, (0), 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 10:12:28,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:12:28,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 148 [2023-01-28 10:12:28,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:12:28,604 INFO L130 PetriNetUnfolder]: 497/872 cut-off events. [2023-01-28 10:12:28,604 INFO L131 PetriNetUnfolder]: For 5287/5287 co-relation queries the response was YES. [2023-01-28 10:12:28,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4234 conditions, 872 events. 497/872 cut-off events. For 5287/5287 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3925 event pairs, 127 based on Foata normal form. 8/874 useless extension candidates. Maximal degree in co-relation 3701. Up to 501 conditions per place. [2023-01-28 10:12:28,611 INFO L137 encePairwiseOnDemand]: 143/148 looper letters, 142 selfloop transitions, 53 changer transitions 0/195 dead transitions. [2023-01-28 10:12:28,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 195 transitions, 2070 flow [2023-01-28 10:12:28,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 10:12:28,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 10:12:28,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 336 transitions. [2023-01-28 10:12:28,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2023-01-28 10:12:28,613 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 336 transitions. [2023-01-28 10:12:28,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 336 transitions. [2023-01-28 10:12:28,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:12:28,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 336 transitions. [2023-01-28 10:12:28,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 67.2) internal successors, (336), 5 states have internal predecessors, (336), 0 states have call successors, (0), 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 10:12:28,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 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 10:12:28,616 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 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 10:12:28,616 INFO L175 Difference]: Start difference. First operand has 88 places, 164 transitions, 1486 flow. Second operand 5 states and 336 transitions. [2023-01-28 10:12:28,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 195 transitions, 2070 flow [2023-01-28 10:12:28,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 195 transitions, 2030 flow, removed 20 selfloop flow, removed 0 redundant places. [2023-01-28 10:12:28,674 INFO L231 Difference]: Finished difference. Result has 94 places, 166 transitions, 1656 flow [2023-01-28 10:12:28,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=1448, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1656, PETRI_PLACES=94, PETRI_TRANSITIONS=166} [2023-01-28 10:12:28,676 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 72 predicate places. [2023-01-28 10:12:28,677 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 166 transitions, 1656 flow [2023-01-28 10:12:28,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 0 states have call successors, (0), 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 10:12:28,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:12:28,677 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:12:28,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 10:12:28,677 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:12:28,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:12:28,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1966469734, now seen corresponding path program 4 times [2023-01-28 10:12:28,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:12:28,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609216547] [2023-01-28 10:12:28,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:12:28,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:12:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:12:28,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:12:28,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:12:28,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609216547] [2023-01-28 10:12:28,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609216547] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:12:28,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:12:28,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 10:12:28,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588230961] [2023-01-28 10:12:28,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:12:28,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 10:12:28,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:12:28,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 10:12:28,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 10:12:28,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 148 [2023-01-28 10:12:28,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 166 transitions, 1656 flow. Second operand has 5 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 0 states have call successors, (0), 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 10:12:28,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:12:28,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 148 [2023-01-28 10:12:28,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:12:29,055 INFO L130 PetriNetUnfolder]: 495/858 cut-off events. [2023-01-28 10:12:29,056 INFO L131 PetriNetUnfolder]: For 5709/5709 co-relation queries the response was YES. [2023-01-28 10:12:29,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4317 conditions, 858 events. 495/858 cut-off events. For 5709/5709 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3792 event pairs, 76 based on Foata normal form. 4/856 useless extension candidates. Maximal degree in co-relation 3851. Up to 343 conditions per place. [2023-01-28 10:12:29,063 INFO L137 encePairwiseOnDemand]: 143/148 looper letters, 135 selfloop transitions, 67 changer transitions 0/202 dead transitions. [2023-01-28 10:12:29,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 202 transitions, 2263 flow [2023-01-28 10:12:29,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 10:12:29,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 10:12:29,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 339 transitions. [2023-01-28 10:12:29,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4581081081081081 [2023-01-28 10:12:29,065 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 339 transitions. [2023-01-28 10:12:29,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 339 transitions. [2023-01-28 10:12:29,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:12:29,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 339 transitions. [2023-01-28 10:12:29,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 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 10:12:29,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 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 10:12:29,067 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 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 10:12:29,067 INFO L175 Difference]: Start difference. First operand has 94 places, 166 transitions, 1656 flow. Second operand 5 states and 339 transitions. [2023-01-28 10:12:29,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 202 transitions, 2263 flow [2023-01-28 10:12:29,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 202 transitions, 2235 flow, removed 13 selfloop flow, removed 1 redundant places. [2023-01-28 10:12:29,102 INFO L231 Difference]: Finished difference. Result has 96 places, 165 transitions, 1745 flow [2023-01-28 10:12:29,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=1611, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1745, PETRI_PLACES=96, PETRI_TRANSITIONS=165} [2023-01-28 10:12:29,104 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 74 predicate places. [2023-01-28 10:12:29,104 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 165 transitions, 1745 flow [2023-01-28 10:12:29,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 0 states have call successors, (0), 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 10:12:29,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:12:29,105 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:12:29,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 10:12:29,105 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:12:29,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:12:29,105 INFO L85 PathProgramCache]: Analyzing trace with hash -722109947, now seen corresponding path program 1 times [2023-01-28 10:12:29,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:12:29,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588141931] [2023-01-28 10:12:29,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:12:29,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:12:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:12:30,673 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:12:30,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:12:30,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588141931] [2023-01-28 10:12:30,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588141931] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:12:30,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347968900] [2023-01-28 10:12:30,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:12:30,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:12:30,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:12:30,675 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:12:30,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 10:12:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:12:30,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 28 conjunts are in the unsatisfiable core [2023-01-28 10:12:30,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:12:31,474 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:12:31,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:12:33,263 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:12:33,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347968900] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:12:33,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:12:33,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2023-01-28 10:12:33,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952513007] [2023-01-28 10:12:33,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:12:33,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-28 10:12:33,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:12:33,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-28 10:12:33,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2023-01-28 10:12:33,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 148 [2023-01-28 10:12:33,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 165 transitions, 1745 flow. Second operand has 25 states, 25 states have (on average 54.12) internal successors, (1353), 25 states have internal predecessors, (1353), 0 states have call successors, (0), 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 10:12:33,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:12:33,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 148 [2023-01-28 10:12:33,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:12:50,910 INFO L130 PetriNetUnfolder]: 1243/2184 cut-off events. [2023-01-28 10:12:50,910 INFO L131 PetriNetUnfolder]: For 13949/13949 co-relation queries the response was YES. [2023-01-28 10:12:50,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11497 conditions, 2184 events. 1243/2184 cut-off events. For 13949/13949 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 12195 event pairs, 0 based on Foata normal form. 10/2188 useless extension candidates. Maximal degree in co-relation 10883. Up to 435 conditions per place. [2023-01-28 10:12:50,928 INFO L137 encePairwiseOnDemand]: 138/148 looper letters, 238 selfloop transitions, 311 changer transitions 92/641 dead transitions. [2023-01-28 10:12:50,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 641 transitions, 7327 flow [2023-01-28 10:12:50,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-01-28 10:12:50,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2023-01-28 10:12:50,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 3594 transitions. [2023-01-28 10:12:50,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38545688545688545 [2023-01-28 10:12:50,940 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 3594 transitions. [2023-01-28 10:12:50,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 3594 transitions. [2023-01-28 10:12:50,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:12:50,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 3594 transitions. [2023-01-28 10:12:50,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 57.04761904761905) internal successors, (3594), 63 states have internal predecessors, (3594), 0 states have call successors, (0), 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 10:12:50,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 148.0) internal successors, (9472), 64 states have internal predecessors, (9472), 0 states have call successors, (0), 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 10:12:50,964 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 148.0) internal successors, (9472), 64 states have internal predecessors, (9472), 0 states have call successors, (0), 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 10:12:50,964 INFO L175 Difference]: Start difference. First operand has 96 places, 165 transitions, 1745 flow. Second operand 63 states and 3594 transitions. [2023-01-28 10:12:50,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 641 transitions, 7327 flow [2023-01-28 10:12:51,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 641 transitions, 6935 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 10:12:51,048 INFO L231 Difference]: Finished difference. Result has 179 places, 392 transitions, 4964 flow [2023-01-28 10:12:51,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=1611, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=4964, PETRI_PLACES=179, PETRI_TRANSITIONS=392} [2023-01-28 10:12:51,048 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 157 predicate places. [2023-01-28 10:12:51,049 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 392 transitions, 4964 flow [2023-01-28 10:12:51,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 54.12) internal successors, (1353), 25 states have internal predecessors, (1353), 0 states have call successors, (0), 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 10:12:51,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:12:51,049 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:12:51,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 10:12:51,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:12:51,256 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:12:51,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:12:51,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1771081357, now seen corresponding path program 2 times [2023-01-28 10:12:51,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:12:51,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469066177] [2023-01-28 10:12:51,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:12:51,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:12:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:12:51,957 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:12:51,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:12:51,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469066177] [2023-01-28 10:12:51,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469066177] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:12:51,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422418120] [2023-01-28 10:12:51,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 10:12:51,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:12:51,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:12:51,960 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:12:51,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 10:12:52,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 10:12:52,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:12:52,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 28 conjunts are in the unsatisfiable core [2023-01-28 10:12:52,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:12:52,508 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:12:52,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:12:53,805 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:12:53,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422418120] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:12:53,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:12:53,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 23 [2023-01-28 10:12:53,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037637594] [2023-01-28 10:12:53,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:12:53,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-28 10:12:53,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:12:53,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-28 10:12:53,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2023-01-28 10:12:53,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 148 [2023-01-28 10:12:53,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 392 transitions, 4964 flow. Second operand has 25 states, 25 states have (on average 56.28) internal successors, (1407), 25 states have internal predecessors, (1407), 0 states have call successors, (0), 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 10:12:53,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:12:53,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 148 [2023-01-28 10:12:53,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:13:03,804 INFO L130 PetriNetUnfolder]: 1839/3229 cut-off events. [2023-01-28 10:13:03,804 INFO L131 PetriNetUnfolder]: For 24471/24471 co-relation queries the response was YES. [2023-01-28 10:13:03,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19022 conditions, 3229 events. 1839/3229 cut-off events. For 24471/24471 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 19456 event pairs, 15 based on Foata normal form. 13/3238 useless extension candidates. Maximal degree in co-relation 18902. Up to 812 conditions per place. [2023-01-28 10:13:03,838 INFO L137 encePairwiseOnDemand]: 140/148 looper letters, 298 selfloop transitions, 456 changer transitions 113/867 dead transitions. [2023-01-28 10:13:03,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 867 transitions, 11557 flow [2023-01-28 10:13:03,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-01-28 10:13:03,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2023-01-28 10:13:03,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 3447 transitions. [2023-01-28 10:13:03,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40156104380242313 [2023-01-28 10:13:03,844 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 3447 transitions. [2023-01-28 10:13:03,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 3447 transitions. [2023-01-28 10:13:03,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:13:03,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 3447 transitions. [2023-01-28 10:13:03,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 59.43103448275862) internal successors, (3447), 58 states have internal predecessors, (3447), 0 states have call successors, (0), 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 10:13:03,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 148.0) internal successors, (8732), 59 states have internal predecessors, (8732), 0 states have call successors, (0), 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 10:13:03,860 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 148.0) internal successors, (8732), 59 states have internal predecessors, (8732), 0 states have call successors, (0), 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 10:13:03,860 INFO L175 Difference]: Start difference. First operand has 179 places, 392 transitions, 4964 flow. Second operand 58 states and 3447 transitions. [2023-01-28 10:13:03,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 867 transitions, 11557 flow [2023-01-28 10:13:04,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 867 transitions, 11327 flow, removed 107 selfloop flow, removed 12 redundant places. [2023-01-28 10:13:04,076 INFO L231 Difference]: Finished difference. Result has 242 places, 607 transitions, 9382 flow [2023-01-28 10:13:04,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=4814, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=273, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=9382, PETRI_PLACES=242, PETRI_TRANSITIONS=607} [2023-01-28 10:13:04,077 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 220 predicate places. [2023-01-28 10:13:04,077 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 607 transitions, 9382 flow [2023-01-28 10:13:04,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 56.28) internal successors, (1407), 25 states have internal predecessors, (1407), 0 states have call successors, (0), 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 10:13:04,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:13:04,078 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:13:04,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 10:13:04,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:13:04,284 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:13:04,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:13:04,285 INFO L85 PathProgramCache]: Analyzing trace with hash -567010117, now seen corresponding path program 3 times [2023-01-28 10:13:04,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:13:04,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161831541] [2023-01-28 10:13:04,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:13:04,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:13:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:13:04,427 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:13:04,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:13:04,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161831541] [2023-01-28 10:13:04,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161831541] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:13:04,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989179909] [2023-01-28 10:13:04,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 10:13:04,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:13:04,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:13:04,428 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:13:04,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 10:13:04,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 10:13:04,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:13:04,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 16 conjunts are in the unsatisfiable core [2023-01-28 10:13:04,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:13:04,719 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:13:04,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:13:04,854 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:13:04,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989179909] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:13:04,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:13:04,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 5] total 10 [2023-01-28 10:13:04,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840141648] [2023-01-28 10:13:04,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:13:04,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 10:13:04,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:13:04,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 10:13:04,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-01-28 10:13:04,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 148 [2023-01-28 10:13:04,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 607 transitions, 9382 flow. Second operand has 10 states, 10 states have (on average 61.4) internal successors, (614), 10 states have internal predecessors, (614), 0 states have call successors, (0), 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 10:13:04,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:13:04,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 148 [2023-01-28 10:13:04,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:13:05,844 INFO L130 PetriNetUnfolder]: 2351/4022 cut-off events. [2023-01-28 10:13:05,844 INFO L131 PetriNetUnfolder]: For 41312/41312 co-relation queries the response was YES. [2023-01-28 10:13:05,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26861 conditions, 4022 events. 2351/4022 cut-off events. For 41312/41312 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 24700 event pairs, 51 based on Foata normal form. 34/4048 useless extension candidates. Maximal degree in co-relation 26701. Up to 842 conditions per place. [2023-01-28 10:13:05,880 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 330 selfloop transitions, 632 changer transitions 0/962 dead transitions. [2023-01-28 10:13:05,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 962 transitions, 16304 flow [2023-01-28 10:13:05,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 10:13:05,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 10:13:05,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 849 transitions. [2023-01-28 10:13:05,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4412681912681913 [2023-01-28 10:13:05,882 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 849 transitions. [2023-01-28 10:13:05,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 849 transitions. [2023-01-28 10:13:05,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:13:05,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 849 transitions. [2023-01-28 10:13:05,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 65.3076923076923) internal successors, (849), 13 states have internal predecessors, (849), 0 states have call successors, (0), 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 10:13:05,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 148.0) internal successors, (2072), 14 states have internal predecessors, (2072), 0 states have call successors, (0), 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 10:13:05,886 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 148.0) internal successors, (2072), 14 states have internal predecessors, (2072), 0 states have call successors, (0), 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 10:13:05,887 INFO L175 Difference]: Start difference. First operand has 242 places, 607 transitions, 9382 flow. Second operand 13 states and 849 transitions. [2023-01-28 10:13:05,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 962 transitions, 16304 flow [2023-01-28 10:13:06,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 962 transitions, 15883 flow, removed 179 selfloop flow, removed 26 redundant places. [2023-01-28 10:13:06,263 INFO L231 Difference]: Finished difference. Result has 222 places, 837 transitions, 14953 flow [2023-01-28 10:13:06,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=9107, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=418, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14953, PETRI_PLACES=222, PETRI_TRANSITIONS=837} [2023-01-28 10:13:06,264 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 200 predicate places. [2023-01-28 10:13:06,264 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 837 transitions, 14953 flow [2023-01-28 10:13:06,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 61.4) internal successors, (614), 10 states have internal predecessors, (614), 0 states have call successors, (0), 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 10:13:06,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:13:06,264 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:13:06,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 10:13:06,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:13:06,465 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:13:06,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:13:06,466 INFO L85 PathProgramCache]: Analyzing trace with hash -319686935, now seen corresponding path program 4 times [2023-01-28 10:13:06,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:13:06,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455974768] [2023-01-28 10:13:06,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:13:06,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:13:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:13:08,037 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:13:08,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:13:08,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455974768] [2023-01-28 10:13:08,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455974768] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:13:08,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744007783] [2023-01-28 10:13:08,037 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 10:13:08,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:13:08,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:13:08,039 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:13:08,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 10:13:08,143 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 10:13:08,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:13:08,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 28 conjunts are in the unsatisfiable core [2023-01-28 10:13:08,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:13:09,057 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:13:09,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:13:10,028 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:13:10,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744007783] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:13:10,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:13:10,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 25 [2023-01-28 10:13:10,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046091625] [2023-01-28 10:13:10,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:13:10,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-28 10:13:10,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:13:10,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-28 10:13:10,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2023-01-28 10:13:10,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 148 [2023-01-28 10:13:10,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 837 transitions, 14953 flow. Second operand has 27 states, 27 states have (on average 54.111111111111114) internal successors, (1461), 27 states have internal predecessors, (1461), 0 states have call successors, (0), 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 10:13:10,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:13:10,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 148 [2023-01-28 10:13:10,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:13:27,503 INFO L130 PetriNetUnfolder]: 3077/5345 cut-off events. [2023-01-28 10:13:27,503 INFO L131 PetriNetUnfolder]: For 67791/67791 co-relation queries the response was YES. [2023-01-28 10:13:27,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39243 conditions, 5345 events. 3077/5345 cut-off events. For 67791/67791 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 35407 event pairs, 18 based on Foata normal form. 15/5350 useless extension candidates. Maximal degree in co-relation 38515. Up to 1977 conditions per place. [2023-01-28 10:13:27,549 INFO L137 encePairwiseOnDemand]: 138/148 looper letters, 462 selfloop transitions, 731 changer transitions 106/1299 dead transitions. [2023-01-28 10:13:27,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 1299 transitions, 23674 flow [2023-01-28 10:13:27,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-01-28 10:13:27,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2023-01-28 10:13:27,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 3801 transitions. [2023-01-28 10:13:27,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3833198870512303 [2023-01-28 10:13:27,555 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 3801 transitions. [2023-01-28 10:13:27,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 3801 transitions. [2023-01-28 10:13:27,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:13:27,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 3801 transitions. [2023-01-28 10:13:27,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 56.73134328358209) internal successors, (3801), 67 states have internal predecessors, (3801), 0 states have call successors, (0), 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 10:13:27,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 148.0) internal successors, (10064), 68 states have internal predecessors, (10064), 0 states have call successors, (0), 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 10:13:27,573 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 148.0) internal successors, (10064), 68 states have internal predecessors, (10064), 0 states have call successors, (0), 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 10:13:27,573 INFO L175 Difference]: Start difference. First operand has 222 places, 837 transitions, 14953 flow. Second operand 67 states and 3801 transitions. [2023-01-28 10:13:27,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 1299 transitions, 23674 flow [2023-01-28 10:13:28,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 1299 transitions, 22880 flow, removed 24 selfloop flow, removed 4 redundant places. [2023-01-28 10:13:28,269 INFO L231 Difference]: Finished difference. Result has 312 places, 1042 transitions, 21007 flow [2023-01-28 10:13:28,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=14361, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=837, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=546, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=21007, PETRI_PLACES=312, PETRI_TRANSITIONS=1042} [2023-01-28 10:13:28,270 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 290 predicate places. [2023-01-28 10:13:28,270 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 1042 transitions, 21007 flow [2023-01-28 10:13:28,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 54.111111111111114) internal successors, (1461), 27 states have internal predecessors, (1461), 0 states have call successors, (0), 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 10:13:28,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:13:28,271 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:13:28,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 10:13:28,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:13:28,477 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:13:28,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:13:28,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1054529367, now seen corresponding path program 5 times [2023-01-28 10:13:28,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:13:28,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974610381] [2023-01-28 10:13:28,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:13:28,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:13:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:13:29,867 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:13:29,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:13:29,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974610381] [2023-01-28 10:13:29,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974610381] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:13:29,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103594163] [2023-01-28 10:13:29,868 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 10:13:29,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:13:29,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:13:29,869 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:13:29,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 10:13:30,019 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 10:13:30,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:13:30,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 28 conjunts are in the unsatisfiable core [2023-01-28 10:13:30,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:13:30,814 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:13:30,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:13:32,323 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:13:32,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103594163] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:13:32,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:13:32,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2023-01-28 10:13:32,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886031245] [2023-01-28 10:13:32,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:13:32,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-01-28 10:13:32,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:13:32,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-01-28 10:13:32,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2023-01-28 10:13:32,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 148 [2023-01-28 10:13:32,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 1042 transitions, 21007 flow. Second operand has 26 states, 26 states have (on average 54.19230769230769) internal successors, (1409), 26 states have internal predecessors, (1409), 0 states have call successors, (0), 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 10:13:32,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:13:32,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 148 [2023-01-28 10:13:32,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:14:09,298 INFO L130 PetriNetUnfolder]: 3815/6634 cut-off events. [2023-01-28 10:14:09,298 INFO L131 PetriNetUnfolder]: For 107596/107596 co-relation queries the response was YES. [2023-01-28 10:14:09,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52929 conditions, 6634 events. 3815/6634 cut-off events. For 107596/107596 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 46000 event pairs, 16 based on Foata normal form. 18/6642 useless extension candidates. Maximal degree in co-relation 52752. Up to 2374 conditions per place. [2023-01-28 10:14:09,363 INFO L137 encePairwiseOnDemand]: 138/148 looper letters, 495 selfloop transitions, 1029 changer transitions 137/1661 dead transitions. [2023-01-28 10:14:09,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 1661 transitions, 33858 flow [2023-01-28 10:14:09,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-01-28 10:14:09,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2023-01-28 10:14:09,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 4471 transitions. [2023-01-28 10:14:09,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38239822100581594 [2023-01-28 10:14:09,410 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 4471 transitions. [2023-01-28 10:14:09,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 4471 transitions. [2023-01-28 10:14:09,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:14:09,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 4471 transitions. [2023-01-28 10:14:09,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 80 states, 79 states have (on average 56.59493670886076) internal successors, (4471), 79 states have internal predecessors, (4471), 0 states have call successors, (0), 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 10:14:09,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 80 states, 80 states have (on average 148.0) internal successors, (11840), 80 states have internal predecessors, (11840), 0 states have call successors, (0), 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 10:14:09,428 INFO L81 ComplementDD]: Finished complementDD. Result has 80 states, 80 states have (on average 148.0) internal successors, (11840), 80 states have internal predecessors, (11840), 0 states have call successors, (0), 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 10:14:09,428 INFO L175 Difference]: Start difference. First operand has 312 places, 1042 transitions, 21007 flow. Second operand 79 states and 4471 transitions. [2023-01-28 10:14:09,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 1661 transitions, 33858 flow [2023-01-28 10:14:10,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 1661 transitions, 32422 flow, removed 297 selfloop flow, removed 25 redundant places. [2023-01-28 10:14:10,652 INFO L231 Difference]: Finished difference. Result has 385 places, 1353 transitions, 30461 flow [2023-01-28 10:14:10,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=20081, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1042, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=737, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=30461, PETRI_PLACES=385, PETRI_TRANSITIONS=1353} [2023-01-28 10:14:10,654 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 363 predicate places. [2023-01-28 10:14:10,654 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 1353 transitions, 30461 flow [2023-01-28 10:14:10,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 54.19230769230769) internal successors, (1409), 26 states have internal predecessors, (1409), 0 states have call successors, (0), 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 10:14:10,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:14:10,655 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:14:10,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 10:14:10,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:14:10,861 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:14:10,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:14:10,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1208967995, now seen corresponding path program 6 times [2023-01-28 10:14:10,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:14:10,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760626370] [2023-01-28 10:14:10,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:14:10,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:14:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:14:11,963 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:14:11,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:14:11,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760626370] [2023-01-28 10:14:11,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760626370] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:14:11,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002417829] [2023-01-28 10:14:11,963 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 10:14:11,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:14:11,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:14:11,964 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:14:11,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 10:14:12,134 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 10:14:12,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:14:12,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 34 conjunts are in the unsatisfiable core [2023-01-28 10:14:12,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:14:12,953 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:14:12,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:14:13,987 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:14:13,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002417829] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:14:13,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:14:13,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 29 [2023-01-28 10:14:13,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223420723] [2023-01-28 10:14:13,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:14:13,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-28 10:14:13,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:14:13,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-28 10:14:13,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=746, Unknown=0, NotChecked=0, Total=930 [2023-01-28 10:14:13,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 148 [2023-01-28 10:14:13,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 1353 transitions, 30461 flow. Second operand has 31 states, 31 states have (on average 53.83870967741935) internal successors, (1669), 31 states have internal predecessors, (1669), 0 states have call successors, (0), 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 10:14:13,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:14:13,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 148 [2023-01-28 10:14:13,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:14:25,543 INFO L130 PetriNetUnfolder]: 3977/6905 cut-off events. [2023-01-28 10:14:25,544 INFO L131 PetriNetUnfolder]: For 138286/138286 co-relation queries the response was YES. [2023-01-28 10:14:25,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61621 conditions, 6905 events. 3977/6905 cut-off events. For 138286/138286 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 48109 event pairs, 6 based on Foata normal form. 13/6912 useless extension candidates. Maximal degree in co-relation 61371. Up to 2427 conditions per place. [2023-01-28 10:14:25,639 INFO L137 encePairwiseOnDemand]: 138/148 looper letters, 303 selfloop transitions, 1399 changer transitions 89/1791 dead transitions. [2023-01-28 10:14:25,639 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 1791 transitions, 41197 flow [2023-01-28 10:14:25,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-01-28 10:14:25,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2023-01-28 10:14:25,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 3283 transitions. [2023-01-28 10:14:25,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38245573159366264 [2023-01-28 10:14:25,646 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 3283 transitions. [2023-01-28 10:14:25,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 3283 transitions. [2023-01-28 10:14:25,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:14:25,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 3283 transitions. [2023-01-28 10:14:25,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 56.60344827586207) internal successors, (3283), 58 states have internal predecessors, (3283), 0 states have call successors, (0), 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 10:14:25,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 148.0) internal successors, (8732), 59 states have internal predecessors, (8732), 0 states have call successors, (0), 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 10:14:25,667 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 148.0) internal successors, (8732), 59 states have internal predecessors, (8732), 0 states have call successors, (0), 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 10:14:25,667 INFO L175 Difference]: Start difference. First operand has 385 places, 1353 transitions, 30461 flow. Second operand 58 states and 3283 transitions. [2023-01-28 10:14:25,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 1791 transitions, 41197 flow [2023-01-28 10:14:27,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 1791 transitions, 40649 flow, removed 233 selfloop flow, removed 17 redundant places. [2023-01-28 10:14:27,728 INFO L231 Difference]: Finished difference. Result has 420 places, 1598 transitions, 40780 flow [2023-01-28 10:14:27,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=30093, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=40780, PETRI_PLACES=420, PETRI_TRANSITIONS=1598} [2023-01-28 10:14:27,730 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 398 predicate places. [2023-01-28 10:14:27,730 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 1598 transitions, 40780 flow [2023-01-28 10:14:27,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 53.83870967741935) internal successors, (1669), 31 states have internal predecessors, (1669), 0 states have call successors, (0), 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 10:14:27,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:14:27,730 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:14:27,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 10:14:27,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-01-28 10:14:27,932 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:14:27,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:14:27,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1594707129, now seen corresponding path program 7 times [2023-01-28 10:14:27,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:14:27,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240108322] [2023-01-28 10:14:27,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:14:27,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:14:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:14:28,853 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:14:28,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:14:28,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240108322] [2023-01-28 10:14:28,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240108322] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:14:28,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730292150] [2023-01-28 10:14:28,856 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 10:14:28,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:14:28,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:14:28,858 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:14:28,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-28 10:14:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:14:28,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 34 conjunts are in the unsatisfiable core [2023-01-28 10:14:28,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:14:29,613 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:14:29,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:14:30,914 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:14:30,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730292150] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:14:30,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:14:30,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 28 [2023-01-28 10:14:30,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930818247] [2023-01-28 10:14:30,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:14:30,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-28 10:14:30,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:14:30,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-28 10:14:30,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=692, Unknown=0, NotChecked=0, Total=870 [2023-01-28 10:14:30,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 148 [2023-01-28 10:14:30,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 1598 transitions, 40780 flow. Second operand has 30 states, 30 states have (on average 53.766666666666666) internal successors, (1613), 30 states have internal predecessors, (1613), 0 states have call successors, (0), 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 10:14:30,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:14:30,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 148 [2023-01-28 10:14:30,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:14:56,661 INFO L130 PetriNetUnfolder]: 4695/8116 cut-off events. [2023-01-28 10:14:56,661 INFO L131 PetriNetUnfolder]: For 198582/198582 co-relation queries the response was YES. [2023-01-28 10:14:56,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80276 conditions, 8116 events. 4695/8116 cut-off events. For 198582/198582 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 57755 event pairs, 10 based on Foata normal form. 12/8128 useless extension candidates. Maximal degree in co-relation 79988. Up to 1927 conditions per place. [2023-01-28 10:14:56,766 INFO L137 encePairwiseOnDemand]: 137/148 looper letters, 253 selfloop transitions, 1867 changer transitions 84/2204 dead transitions. [2023-01-28 10:14:56,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 2204 transitions, 56492 flow [2023-01-28 10:14:56,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-01-28 10:14:56,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2023-01-28 10:14:56,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 4974 transitions. [2023-01-28 10:14:56,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819103194103194 [2023-01-28 10:14:56,773 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 4974 transitions. [2023-01-28 10:14:56,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 4974 transitions. [2023-01-28 10:14:56,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:14:56,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 4974 transitions. [2023-01-28 10:14:56,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 56.52272727272727) internal successors, (4974), 88 states have internal predecessors, (4974), 0 states have call successors, (0), 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 10:14:56,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 148.0) internal successors, (13172), 89 states have internal predecessors, (13172), 0 states have call successors, (0), 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 10:14:56,791 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 148.0) internal successors, (13172), 89 states have internal predecessors, (13172), 0 states have call successors, (0), 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 10:14:56,791 INFO L175 Difference]: Start difference. First operand has 420 places, 1598 transitions, 40780 flow. Second operand 88 states and 4974 transitions. [2023-01-28 10:14:56,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 2204 transitions, 56492 flow [2023-01-28 10:14:59,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 2204 transitions, 55321 flow, removed 220 selfloop flow, removed 20 redundant places. [2023-01-28 10:14:59,612 INFO L231 Difference]: Finished difference. Result has 492 places, 1960 transitions, 53409 flow [2023-01-28 10:14:59,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=40030, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1506, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=53409, PETRI_PLACES=492, PETRI_TRANSITIONS=1960} [2023-01-28 10:14:59,614 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 470 predicate places. [2023-01-28 10:14:59,614 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 1960 transitions, 53409 flow [2023-01-28 10:14:59,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 53.766666666666666) internal successors, (1613), 30 states have internal predecessors, (1613), 0 states have call successors, (0), 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 10:14:59,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:14:59,615 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:14:59,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-01-28 10:14:59,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-01-28 10:14:59,816 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:14:59,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:14:59,816 INFO L85 PathProgramCache]: Analyzing trace with hash 808345547, now seen corresponding path program 5 times [2023-01-28 10:14:59,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:14:59,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027474703] [2023-01-28 10:14:59,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:14:59,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:14:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:15:00,384 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:15:00,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:15:00,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027474703] [2023-01-28 10:15:00,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027474703] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:15:00,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715184471] [2023-01-28 10:15:00,385 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 10:15:00,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:15:00,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:15:00,389 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:15:00,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-28 10:15:00,521 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-28 10:15:00,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:15:00,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 35 conjunts are in the unsatisfiable core [2023-01-28 10:15:00,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:15:01,010 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:15:01,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:15:01,430 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:15:01,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715184471] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:15:01,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:15:01,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 28 [2023-01-28 10:15:01,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809316103] [2023-01-28 10:15:01,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:15:01,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-28 10:15:01,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:15:01,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-28 10:15:01,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=686, Unknown=0, NotChecked=0, Total=870 [2023-01-28 10:15:01,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 148 [2023-01-28 10:15:01,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 1960 transitions, 53409 flow. Second operand has 30 states, 30 states have (on average 53.7) internal successors, (1611), 30 states have internal predecessors, (1611), 0 states have call successors, (0), 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 10:15:01,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:15:01,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 148 [2023-01-28 10:15:01,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:15:12,202 INFO L130 PetriNetUnfolder]: 5939/10335 cut-off events. [2023-01-28 10:15:12,202 INFO L131 PetriNetUnfolder]: For 263793/263793 co-relation queries the response was YES. [2023-01-28 10:15:12,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107697 conditions, 10335 events. 5939/10335 cut-off events. For 263793/263793 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 77089 event pairs, 60 based on Foata normal form. 19/10354 useless extension candidates. Maximal degree in co-relation 107331. Up to 2374 conditions per place. [2023-01-28 10:15:12,309 INFO L137 encePairwiseOnDemand]: 137/148 looper letters, 377 selfloop transitions, 2315 changer transitions 114/2806 dead transitions. [2023-01-28 10:15:12,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 2806 transitions, 78091 flow [2023-01-28 10:15:12,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-01-28 10:15:12,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2023-01-28 10:15:12,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 4298 transitions. [2023-01-28 10:15:12,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38211237553342814 [2023-01-28 10:15:12,315 INFO L72 ComplementDD]: Start complementDD. Operand 76 states and 4298 transitions. [2023-01-28 10:15:12,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 4298 transitions. [2023-01-28 10:15:12,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:15:12,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 76 states and 4298 transitions. [2023-01-28 10:15:12,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 77 states, 76 states have (on average 56.55263157894737) internal successors, (4298), 76 states have internal predecessors, (4298), 0 states have call successors, (0), 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 10:15:12,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 77 states, 77 states have (on average 148.0) internal successors, (11396), 77 states have internal predecessors, (11396), 0 states have call successors, (0), 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 10:15:12,329 INFO L81 ComplementDD]: Finished complementDD. Result has 77 states, 77 states have (on average 148.0) internal successors, (11396), 77 states have internal predecessors, (11396), 0 states have call successors, (0), 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 10:15:12,329 INFO L175 Difference]: Start difference. First operand has 492 places, 1960 transitions, 53409 flow. Second operand 76 states and 4298 transitions. [2023-01-28 10:15:12,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 2806 transitions, 78091 flow [2023-01-28 10:15:17,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 2806 transitions, 76525 flow, removed 506 selfloop flow, removed 26 redundant places. [2023-01-28 10:15:17,104 INFO L231 Difference]: Finished difference. Result has 561 places, 2561 transitions, 75141 flow [2023-01-28 10:15:17,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=52402, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1960, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1729, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=75141, PETRI_PLACES=561, PETRI_TRANSITIONS=2561} [2023-01-28 10:15:17,106 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 539 predicate places. [2023-01-28 10:15:17,106 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 2561 transitions, 75141 flow [2023-01-28 10:15:17,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 53.7) internal successors, (1611), 30 states have internal predecessors, (1611), 0 states have call successors, (0), 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 10:15:17,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:15:17,107 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:15:17,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-28 10:15:17,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-01-28 10:15:17,313 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:15:17,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:15:17,314 INFO L85 PathProgramCache]: Analyzing trace with hash 488184972, now seen corresponding path program 8 times [2023-01-28 10:15:17,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:15:17,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094153444] [2023-01-28 10:15:17,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:15:17,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:15:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:15:19,022 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:15:19,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:15:19,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094153444] [2023-01-28 10:15:19,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094153444] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:15:19,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781890755] [2023-01-28 10:15:19,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 10:15:19,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:15:19,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:15:19,023 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:15:19,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-28 10:15:19,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 10:15:19,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:15:19,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 29 conjunts are in the unsatisfiable core [2023-01-28 10:15:19,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:15:19,956 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:15:19,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:15:24,710 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:15:24,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781890755] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:15:24,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:15:24,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2023-01-28 10:15:24,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748069966] [2023-01-28 10:15:24,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:15:24,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-01-28 10:15:24,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:15:24,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-01-28 10:15:24,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2023-01-28 10:15:24,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 148 [2023-01-28 10:15:24,714 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 2561 transitions, 75141 flow. Second operand has 29 states, 29 states have (on average 54.172413793103445) internal successors, (1571), 29 states have internal predecessors, (1571), 0 states have call successors, (0), 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 10:15:24,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:15:24,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 148 [2023-01-28 10:15:24,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:15:56,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 10:16:39,911 INFO L130 PetriNetUnfolder]: 7075/12358 cut-off events. [2023-01-28 10:16:39,912 INFO L131 PetriNetUnfolder]: For 362801/362801 co-relation queries the response was YES. [2023-01-28 10:16:40,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141291 conditions, 12358 events. 7075/12358 cut-off events. For 362801/362801 co-relation queries the response was YES. Maximal size of possible extension queue 778. Compared 93773 event pairs, 4 based on Foata normal form. 32/12390 useless extension candidates. Maximal degree in co-relation 140971. Up to 4571 conditions per place. [2023-01-28 10:16:40,065 INFO L137 encePairwiseOnDemand]: 138/148 looper letters, 1216 selfloop transitions, 2060 changer transitions 223/3499 dead transitions. [2023-01-28 10:16:40,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 646 places, 3499 transitions, 103507 flow [2023-01-28 10:16:40,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2023-01-28 10:16:40,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2023-01-28 10:16:40,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 5277 transitions. [2023-01-28 10:16:40,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3833914559721011 [2023-01-28 10:16:40,071 INFO L72 ComplementDD]: Start complementDD. Operand 93 states and 5277 transitions. [2023-01-28 10:16:40,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 93 states and 5277 transitions. [2023-01-28 10:16:40,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:16:40,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 93 states and 5277 transitions. [2023-01-28 10:16:40,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 94 states, 93 states have (on average 56.74193548387097) internal successors, (5277), 93 states have internal predecessors, (5277), 0 states have call successors, (0), 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 10:16:40,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 94 states, 94 states have (on average 148.0) internal successors, (13912), 94 states have internal predecessors, (13912), 0 states have call successors, (0), 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 10:16:40,088 INFO L81 ComplementDD]: Finished complementDD. Result has 94 states, 94 states have (on average 148.0) internal successors, (13912), 94 states have internal predecessors, (13912), 0 states have call successors, (0), 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 10:16:40,088 INFO L175 Difference]: Start difference. First operand has 561 places, 2561 transitions, 75141 flow. Second operand 93 states and 5277 transitions. [2023-01-28 10:16:40,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 646 places, 3499 transitions, 103507 flow [2023-01-28 10:16:48,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 621 places, 3499 transitions, 100084 flow, removed 569 selfloop flow, removed 25 redundant places. [2023-01-28 10:16:48,445 INFO L231 Difference]: Finished difference. Result has 667 places, 3022 transitions, 95128 flow [2023-01-28 10:16:48,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=72702, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1674, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=781, PETRI_DIFFERENCE_SUBTRAHEND_STATES=93, PETRI_FLOW=95128, PETRI_PLACES=667, PETRI_TRANSITIONS=3022} [2023-01-28 10:16:48,448 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 645 predicate places. [2023-01-28 10:16:48,448 INFO L495 AbstractCegarLoop]: Abstraction has has 667 places, 3022 transitions, 95128 flow [2023-01-28 10:16:48,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 54.172413793103445) internal successors, (1571), 29 states have internal predecessors, (1571), 0 states have call successors, (0), 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 10:16:48,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:16:48,448 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:16:48,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-01-28 10:16:48,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-28 10:16:48,653 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:16:48,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:16:48,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1690291124, now seen corresponding path program 9 times [2023-01-28 10:16:48,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:16:48,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644270896] [2023-01-28 10:16:48,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:16:48,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:16:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:16:49,607 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:16:49,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:16:49,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644270896] [2023-01-28 10:16:49,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644270896] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:16:49,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695210083] [2023-01-28 10:16:49,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 10:16:49,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:16:49,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:16:49,609 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:16:49,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-28 10:16:49,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 10:16:49,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:16:49,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-28 10:16:49,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:16:50,499 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:16:50,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:16:51,991 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:16:51,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695210083] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:16:51,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:16:51,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 29 [2023-01-28 10:16:51,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109260619] [2023-01-28 10:16:51,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:16:51,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-28 10:16:51,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:16:51,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-28 10:16:51,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=750, Unknown=0, NotChecked=0, Total=930 [2023-01-28 10:16:51,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 148 [2023-01-28 10:16:51,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 667 places, 3022 transitions, 95128 flow. Second operand has 31 states, 31 states have (on average 56.03225806451613) internal successors, (1737), 31 states have internal predecessors, (1737), 0 states have call successors, (0), 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 10:16:51,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:16:51,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 148 [2023-01-28 10:16:51,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:17:02,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 10:17:20,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 10:17:33,752 INFO L130 PetriNetUnfolder]: 7520/13076 cut-off events. [2023-01-28 10:17:33,752 INFO L131 PetriNetUnfolder]: For 453939/453939 co-relation queries the response was YES. [2023-01-28 10:17:33,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157351 conditions, 13076 events. 7520/13076 cut-off events. For 453939/453939 co-relation queries the response was YES. Maximal size of possible extension queue 830. Compared 100153 event pairs, 11 based on Foata normal form. 23/13099 useless extension candidates. Maximal degree in co-relation 156874. Up to 4919 conditions per place. [2023-01-28 10:17:33,933 INFO L137 encePairwiseOnDemand]: 140/148 looper letters, 1195 selfloop transitions, 2264 changer transitions 139/3598 dead transitions. [2023-01-28 10:17:33,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 701 places, 3598 transitions, 115611 flow [2023-01-28 10:17:33,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-01-28 10:17:33,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2023-01-28 10:17:33,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 3783 transitions. [2023-01-28 10:17:33,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993876689189189 [2023-01-28 10:17:33,937 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 3783 transitions. [2023-01-28 10:17:33,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 3783 transitions. [2023-01-28 10:17:33,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:17:33,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 3783 transitions. [2023-01-28 10:17:33,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 59.109375) internal successors, (3783), 64 states have internal predecessors, (3783), 0 states have call successors, (0), 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 10:17:33,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 148.0) internal successors, (9620), 65 states have internal predecessors, (9620), 0 states have call successors, (0), 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 10:17:33,949 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 148.0) internal successors, (9620), 65 states have internal predecessors, (9620), 0 states have call successors, (0), 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 10:17:33,949 INFO L175 Difference]: Start difference. First operand has 667 places, 3022 transitions, 95128 flow. Second operand 64 states and 3783 transitions. [2023-01-28 10:17:33,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 701 places, 3598 transitions, 115611 flow [2023-01-28 10:17:43,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 675 places, 3598 transitions, 114807 flow, removed 385 selfloop flow, removed 26 redundant places. [2023-01-28 10:17:43,463 INFO L231 Difference]: Finished difference. Result has 701 places, 3242 transitions, 111449 flow [2023-01-28 10:17:43,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=94556, PETRI_DIFFERENCE_MINUEND_PLACES=612, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3022, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2056, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=887, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=111449, PETRI_PLACES=701, PETRI_TRANSITIONS=3242} [2023-01-28 10:17:43,465 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 679 predicate places. [2023-01-28 10:17:43,466 INFO L495 AbstractCegarLoop]: Abstraction has has 701 places, 3242 transitions, 111449 flow [2023-01-28 10:17:43,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 56.03225806451613) internal successors, (1737), 31 states have internal predecessors, (1737), 0 states have call successors, (0), 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 10:17:43,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:17:43,466 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:17:43,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-01-28 10:17:43,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-01-28 10:17:43,667 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:17:43,667 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:17:43,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1527671576, now seen corresponding path program 10 times [2023-01-28 10:17:43,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:17:43,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392381627] [2023-01-28 10:17:43,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:17:43,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:17:43,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:17:44,666 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:17:44,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:17:44,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392381627] [2023-01-28 10:17:44,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392381627] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:17:44,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795865224] [2023-01-28 10:17:44,666 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 10:17:44,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:17:44,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:17:44,668 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:17:44,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-28 10:17:44,791 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 10:17:44,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:17:44,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-28 10:17:44,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:17:45,398 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:17:45,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:17:46,958 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:17:46,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795865224] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:17:46,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:17:46,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 28 [2023-01-28 10:17:46,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515669053] [2023-01-28 10:17:46,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:17:46,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-28 10:17:46,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:17:46,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-28 10:17:46,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=718, Unknown=0, NotChecked=0, Total=870 [2023-01-28 10:17:46,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 148 [2023-01-28 10:17:46,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 701 places, 3242 transitions, 111449 flow. Second operand has 30 states, 30 states have (on average 53.96666666666667) internal successors, (1619), 30 states have internal predecessors, (1619), 0 states have call successors, (0), 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 10:17:46,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:17:46,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 148 [2023-01-28 10:17:46,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:18:15,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 10:18:30,092 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse4 (+ c_~S~0 c_~T~0))) (let ((.cse8 (* (div c_~m~0 4294967296) 4294967296)) (.cse1 (div .cse4 4294967296))) (let ((.cse7 (div c_~t~0 4294967296)) (.cse11 (* .cse1 4294967296)) (.cse15 (+ c_~S~0 c_~T~0 .cse8)) (.cse6 (div c_~s~0 4294967296))) (let ((.cse3 (* .cse6 4294967296)) (.cse10 (<= (+ c_~m~0 .cse11) .cse15)) (.cse5 (* .cse7 4294967296))) (and (let ((.cse0 (* (div (+ c_~s~0 (- 1)) 4294967296) 4294967296))) (or (<= c_thread2Thread1of1ForFork1_~cond~1 (* 256 (div c_thread2Thread1of1ForFork1_~cond~1 256))) (<= c_~s~0 (+ .cse0 1)) (let ((.cse2 (+ .cse6 .cse7 1))) (and (<= c_~s~0 (+ .cse0 4294967295)) (or (< .cse1 .cse2) (and (<= (+ c_~s~0 c_~m~0) (+ 4294967296 .cse3)) (<= .cse4 (+ c_~s~0 c_~t~0 c_~m~0)))) (<= (+ c_~S~0 c_~T~0 .cse5) (+ (* (div (+ (- 1) c_~S~0 c_~T~0 (- c_~s~0) (- c_~m~0)) 4294967296) 4294967296) c_~t~0 c_~m~0 4294967295 .cse3)) (or (<= .cse2 .cse1) (<= (+ c_~s~0 2 .cse5) .cse4)))))) (or (<= (+ .cse3 1) c_~s~0) (let ((.cse9 (+ c_~t~0 c_~m~0 .cse11))) (and (or (<= (+ c_~S~0 c_~T~0 .cse8 .cse5 4294967296) .cse9) .cse10) (<= (+ c_~S~0 c_~T~0 .cse8 .cse5) .cse9)))) (or (< 0 (mod (+ c_~t~0 4294967294) 4294967296)) (let ((.cse13 (+ c_~m~0 .cse11 1))) (and (or (let ((.cse12 (+ c_~s~0 1))) (< (* 4294967296 (div .cse12 4294967296)) .cse12)) (let ((.cse14 (+ c_~S~0 c_~T~0 (* (div (+ c_~m~0 1) 4294967296) 4294967296)))) (and (<= .cse13 .cse14) (< .cse14 (+ c_~m~0 2 .cse11))))) (or (and (< .cse15 .cse13) .cse10) (< 0 (mod (+ c_~s~0 2) 4294967296)))))) (or (and (= c_thread2Thread1of1ForFork1_~cond~1 0) (<= c_~t~0 .cse5)) (and (= c_thread2Thread1of1ForFork1_~cond~1 1) (< .cse5 c_~t~0)))))))) is different from false [2023-01-28 10:18:44,865 INFO L130 PetriNetUnfolder]: 9192/15973 cut-off events. [2023-01-28 10:18:44,865 INFO L131 PetriNetUnfolder]: For 697211/697211 co-relation queries the response was YES. [2023-01-28 10:18:45,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203942 conditions, 15973 events. 9192/15973 cut-off events. For 697211/697211 co-relation queries the response was YES. Maximal size of possible extension queue 976. Compared 125983 event pairs, 13 based on Foata normal form. 23/15996 useless extension candidates. Maximal degree in co-relation 203505. Up to 4055 conditions per place. [2023-01-28 10:18:45,099 INFO L137 encePairwiseOnDemand]: 138/148 looper letters, 819 selfloop transitions, 3503 changer transitions 145/4467 dead transitions. [2023-01-28 10:18:45,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 792 places, 4467 transitions, 154691 flow [2023-01-28 10:18:45,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2023-01-28 10:18:45,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2023-01-28 10:18:45,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 6119 transitions. [2023-01-28 10:18:45,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828203203203203 [2023-01-28 10:18:45,104 INFO L72 ComplementDD]: Start complementDD. Operand 108 states and 6119 transitions. [2023-01-28 10:18:45,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 6119 transitions. [2023-01-28 10:18:45,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:18:45,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 108 states and 6119 transitions. [2023-01-28 10:18:45,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 109 states, 108 states have (on average 56.657407407407405) internal successors, (6119), 108 states have internal predecessors, (6119), 0 states have call successors, (0), 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 10:18:45,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 109 states, 109 states have (on average 148.0) internal successors, (16132), 109 states have internal predecessors, (16132), 0 states have call successors, (0), 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 10:18:45,123 INFO L81 ComplementDD]: Finished complementDD. Result has 109 states, 109 states have (on average 148.0) internal successors, (16132), 109 states have internal predecessors, (16132), 0 states have call successors, (0), 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 10:18:45,123 INFO L175 Difference]: Start difference. First operand has 701 places, 3242 transitions, 111449 flow. Second operand 108 states and 6119 transitions. [2023-01-28 10:18:45,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 792 places, 4467 transitions, 154691 flow [2023-01-28 10:18:59,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 762 places, 4467 transitions, 153866 flow, removed 212 selfloop flow, removed 30 redundant places. [2023-01-28 10:18:59,643 INFO L231 Difference]: Finished difference. Result has 790 places, 4014 transitions, 149184 flow [2023-01-28 10:18:59,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=110864, PETRI_DIFFERENCE_MINUEND_PLACES=655, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2760, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=108, PETRI_FLOW=149184, PETRI_PLACES=790, PETRI_TRANSITIONS=4014} [2023-01-28 10:18:59,646 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 768 predicate places. [2023-01-28 10:18:59,646 INFO L495 AbstractCegarLoop]: Abstraction has has 790 places, 4014 transitions, 149184 flow [2023-01-28 10:18:59,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 53.96666666666667) internal successors, (1619), 30 states have internal predecessors, (1619), 0 states have call successors, (0), 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 10:18:59,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:18:59,646 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:18:59,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-01-28 10:18:59,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-01-28 10:18:59,847 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:18:59,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:18:59,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1153779590, now seen corresponding path program 11 times [2023-01-28 10:18:59,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:18:59,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777401601] [2023-01-28 10:18:59,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:18:59,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:18:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:19:00,817 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:19:00,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:19:00,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777401601] [2023-01-28 10:19:00,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777401601] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:19:00,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071760304] [2023-01-28 10:19:00,818 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 10:19:00,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:19:00,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:19:00,819 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:19:00,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-01-28 10:19:00,954 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 10:19:00,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:19:00,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-28 10:19:00,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:19:02,023 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:19:02,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:19:03,172 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:19:03,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071760304] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:19:03,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:19:03,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 29 [2023-01-28 10:19:03,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230054213] [2023-01-28 10:19:03,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:19:03,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-28 10:19:03,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:19:03,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-28 10:19:03,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=726, Unknown=0, NotChecked=0, Total=930 [2023-01-28 10:19:03,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 148 [2023-01-28 10:19:03,175 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 790 places, 4014 transitions, 149184 flow. Second operand has 31 states, 31 states have (on average 53.903225806451616) internal successors, (1671), 31 states have internal predecessors, (1671), 0 states have call successors, (0), 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 10:19:03,175 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:19:03,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 148 [2023-01-28 10:19:03,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:19:41,919 INFO L130 PetriNetUnfolder]: 9742/16958 cut-off events. [2023-01-28 10:19:41,919 INFO L131 PetriNetUnfolder]: For 835792/835792 co-relation queries the response was YES. [2023-01-28 10:19:42,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232470 conditions, 16958 events. 9742/16958 cut-off events. For 835792/835792 co-relation queries the response was YES. Maximal size of possible extension queue 1010. Compared 134916 event pairs, 36 based on Foata normal form. 28/16986 useless extension candidates. Maximal degree in co-relation 231927. Up to 6598 conditions per place. [2023-01-28 10:19:42,303 INFO L137 encePairwiseOnDemand]: 139/148 looper letters, 1364 selfloop transitions, 3117 changer transitions 141/4622 dead transitions. [2023-01-28 10:19:42,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 846 places, 4622 transitions, 173550 flow [2023-01-28 10:19:42,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-01-28 10:19:42,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2023-01-28 10:19:42,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 4129 transitions. [2023-01-28 10:19:42,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38748123123123124 [2023-01-28 10:19:42,308 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 4129 transitions. [2023-01-28 10:19:42,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 4129 transitions. [2023-01-28 10:19:42,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:19:42,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 4129 transitions. [2023-01-28 10:19:42,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 57.34722222222222) internal successors, (4129), 72 states have internal predecessors, (4129), 0 states have call successors, (0), 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 10:19:42,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 148.0) internal successors, (10804), 73 states have internal predecessors, (10804), 0 states have call successors, (0), 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 10:19:42,321 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 148.0) internal successors, (10804), 73 states have internal predecessors, (10804), 0 states have call successors, (0), 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 10:19:42,321 INFO L175 Difference]: Start difference. First operand has 790 places, 4014 transitions, 149184 flow. Second operand 72 states and 4129 transitions. [2023-01-28 10:19:42,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 846 places, 4622 transitions, 173550 flow [2023-01-28 10:20:03,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 814 places, 4622 transitions, 170779 flow, removed 724 selfloop flow, removed 32 redundant places. [2023-01-28 10:20:03,268 INFO L231 Difference]: Finished difference. Result has 835 places, 4242 transitions, 162757 flow [2023-01-28 10:20:03,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=146856, PETRI_DIFFERENCE_MINUEND_PLACES=743, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4014, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2899, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1099, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=162757, PETRI_PLACES=835, PETRI_TRANSITIONS=4242} [2023-01-28 10:20:03,271 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 813 predicate places. [2023-01-28 10:20:03,271 INFO L495 AbstractCegarLoop]: Abstraction has has 835 places, 4242 transitions, 162757 flow [2023-01-28 10:20:03,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 53.903225806451616) internal successors, (1671), 31 states have internal predecessors, (1671), 0 states have call successors, (0), 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 10:20:03,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:20:03,272 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:20:03,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-01-28 10:20:03,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:20:03,472 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:20:03,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:20:03,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1004786846, now seen corresponding path program 12 times [2023-01-28 10:20:03,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:20:03,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148347303] [2023-01-28 10:20:03,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:20:03,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:20:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:20:05,158 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:20:05,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:20:05,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148347303] [2023-01-28 10:20:05,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148347303] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:20:05,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254263521] [2023-01-28 10:20:05,158 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 10:20:05,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:20:05,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:20:05,159 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:20:05,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-01-28 10:20:05,283 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 10:20:05,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:20:05,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-28 10:20:05,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:20:06,348 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:20:06,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:20:10,155 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:20:10,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254263521] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:20:10,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:20:10,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 29 [2023-01-28 10:20:10,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237044780] [2023-01-28 10:20:10,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:20:10,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-28 10:20:10,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:20:10,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-28 10:20:10,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=788, Unknown=0, NotChecked=0, Total=930 [2023-01-28 10:20:10,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 148 [2023-01-28 10:20:10,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 835 places, 4242 transitions, 162757 flow. Second operand has 31 states, 31 states have (on average 53.903225806451616) internal successors, (1671), 31 states have internal predecessors, (1671), 0 states have call successors, (0), 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 10:20:10,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:20:10,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 148 [2023-01-28 10:20:10,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:21:36,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 10:22:00,975 WARN L222 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 153 DAG size of output: 85 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 10:23:09,255 INFO L130 PetriNetUnfolder]: 12211/21333 cut-off events. [2023-01-28 10:23:09,255 INFO L131 PetriNetUnfolder]: For 1123505/1123505 co-relation queries the response was YES. [2023-01-28 10:23:09,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297757 conditions, 21333 events. 12211/21333 cut-off events. For 1123505/1123505 co-relation queries the response was YES. Maximal size of possible extension queue 1300. Compared 176483 event pairs, 88 based on Foata normal form. 57/21390 useless extension candidates. Maximal degree in co-relation 297205. Up to 5542 conditions per place. [2023-01-28 10:23:09,598 INFO L137 encePairwiseOnDemand]: 137/148 looper letters, 1080 selfloop transitions, 4397 changer transitions 320/5797 dead transitions. [2023-01-28 10:23:09,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 948 places, 5797 transitions, 224956 flow [2023-01-28 10:23:09,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-01-28 10:23:09,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2023-01-28 10:23:09,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 7133 transitions. [2023-01-28 10:23:09,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37949563736965314 [2023-01-28 10:23:09,605 INFO L72 ComplementDD]: Start complementDD. Operand 127 states and 7133 transitions. [2023-01-28 10:23:09,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 127 states and 7133 transitions. [2023-01-28 10:23:09,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:23:09,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 127 states and 7133 transitions. [2023-01-28 10:23:09,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 128 states, 127 states have (on average 56.16535433070866) internal successors, (7133), 127 states have internal predecessors, (7133), 0 states have call successors, (0), 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 10:23:09,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 128 states, 128 states have (on average 148.0) internal successors, (18944), 128 states have internal predecessors, (18944), 0 states have call successors, (0), 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 10:23:09,628 INFO L81 ComplementDD]: Finished complementDD. Result has 128 states, 128 states have (on average 148.0) internal successors, (18944), 128 states have internal predecessors, (18944), 0 states have call successors, (0), 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 10:23:09,628 INFO L175 Difference]: Start difference. First operand has 835 places, 4242 transitions, 162757 flow. Second operand 127 states and 7133 transitions. [2023-01-28 10:23:09,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 948 places, 5797 transitions, 224956 flow [2023-01-28 10:23:39,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 922 places, 5797 transitions, 224376 flow, removed 146 selfloop flow, removed 26 redundant places. [2023-01-28 10:23:39,789 INFO L231 Difference]: Finished difference. Result has 988 places, 5282 transitions, 218592 flow [2023-01-28 10:23:39,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=162358, PETRI_DIFFERENCE_MINUEND_PLACES=796, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3410, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=713, PETRI_DIFFERENCE_SUBTRAHEND_STATES=127, PETRI_FLOW=218592, PETRI_PLACES=988, PETRI_TRANSITIONS=5282} [2023-01-28 10:23:39,793 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 966 predicate places. [2023-01-28 10:23:39,793 INFO L495 AbstractCegarLoop]: Abstraction has has 988 places, 5282 transitions, 218592 flow [2023-01-28 10:23:39,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 53.903225806451616) internal successors, (1671), 31 states have internal predecessors, (1671), 0 states have call successors, (0), 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 10:23:39,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:23:39,794 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:23:39,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-01-28 10:23:39,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:23:39,998 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:23:39,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:23:39,999 INFO L85 PathProgramCache]: Analyzing trace with hash -725913006, now seen corresponding path program 13 times [2023-01-28 10:23:39,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:23:39,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814557894] [2023-01-28 10:23:39,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:23:39,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:23:40,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:23:40,424 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:23:40,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:23:40,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814557894] [2023-01-28 10:23:40,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814557894] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:23:40,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828695396] [2023-01-28 10:23:40,425 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 10:23:40,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:23:40,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:23:40,426 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:23:40,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-01-28 10:23:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:23:40,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 17 conjunts are in the unsatisfiable core [2023-01-28 10:23:40,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:23:40,849 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:23:40,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:23:41,113 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:23:41,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828695396] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:23:41,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:23:41,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 16 [2023-01-28 10:23:41,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298313706] [2023-01-28 10:23:41,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:23:41,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 10:23:41,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:23:41,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 10:23:41,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2023-01-28 10:23:41,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 148 [2023-01-28 10:23:41,115 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 988 places, 5282 transitions, 218592 flow. Second operand has 17 states, 17 states have (on average 58.0) internal successors, (986), 17 states have internal predecessors, (986), 0 states have call successors, (0), 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 10:23:41,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:23:41,116 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 148 [2023-01-28 10:23:41,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:24:20,743 INFO L130 PetriNetUnfolder]: 14095/24264 cut-off events. [2023-01-28 10:24:20,743 INFO L131 PetriNetUnfolder]: For 1554936/1554936 co-relation queries the response was YES. [2023-01-28 10:24:21,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377999 conditions, 24264 events. 14095/24264 cut-off events. For 1554936/1554936 co-relation queries the response was YES. Maximal size of possible extension queue 1429. Compared 199537 event pairs, 0 based on Foata normal form. 114/24378 useless extension candidates. Maximal degree in co-relation 377600. Up to 10002 conditions per place. [2023-01-28 10:24:21,448 INFO L137 encePairwiseOnDemand]: 138/148 looper letters, 2262 selfloop transitions, 4607 changer transitions 0/6869 dead transitions. [2023-01-28 10:24:21,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1005 places, 6869 transitions, 292074 flow [2023-01-28 10:24:21,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-01-28 10:24:21,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-01-28 10:24:21,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 2831 transitions. [2023-01-28 10:24:21,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415834312573443 [2023-01-28 10:24:21,455 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 2831 transitions. [2023-01-28 10:24:21,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 2831 transitions. [2023-01-28 10:24:21,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:24:21,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 2831 transitions. [2023-01-28 10:24:21,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 61.54347826086956) internal successors, (2831), 46 states have internal predecessors, (2831), 0 states have call successors, (0), 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 10:24:21,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 148.0) internal successors, (6956), 47 states have internal predecessors, (6956), 0 states have call successors, (0), 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 10:24:21,463 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 148.0) internal successors, (6956), 47 states have internal predecessors, (6956), 0 states have call successors, (0), 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 10:24:21,463 INFO L175 Difference]: Start difference. First operand has 988 places, 5282 transitions, 218592 flow. Second operand 46 states and 2831 transitions. [2023-01-28 10:24:21,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1005 places, 6869 transitions, 292074 flow [2023-01-28 10:25:18,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 941 places, 6869 transitions, 285442 flow, removed 1233 selfloop flow, removed 64 redundant places. [2023-01-28 10:25:18,915 INFO L231 Difference]: Finished difference. Result has 969 places, 6452 transitions, 283811 flow [2023-01-28 10:25:18,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=213652, PETRI_DIFFERENCE_MINUEND_PLACES=896, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3646, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=283811, PETRI_PLACES=969, PETRI_TRANSITIONS=6452} [2023-01-28 10:25:18,919 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 947 predicate places. [2023-01-28 10:25:18,919 INFO L495 AbstractCegarLoop]: Abstraction has has 969 places, 6452 transitions, 283811 flow [2023-01-28 10:25:18,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 58.0) internal successors, (986), 17 states have internal predecessors, (986), 0 states have call successors, (0), 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 10:25:18,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:25:18,920 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:25:18,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-01-28 10:25:19,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:25:19,120 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 10:25:19,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:25:19,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1894533057, now seen corresponding path program 14 times [2023-01-28 10:25:19,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:25:19,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927138134] [2023-01-28 10:25:19,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:25:19,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:25:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:25:19,386 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:25:19,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:25:19,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927138134] [2023-01-28 10:25:19,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927138134] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:25:19,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973311048] [2023-01-28 10:25:19,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 10:25:19,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:25:19,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:25:19,389 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:25:19,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-01-28 10:25:19,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 10:25:19,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:25:19,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-28 10:25:19,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:25:19,623 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:25:19,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:25:19,741 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:25:19,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973311048] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:25:19,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:25:19,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2023-01-28 10:25:19,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549242341] [2023-01-28 10:25:19,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:25:19,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 10:25:19,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:25:19,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 10:25:19,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-01-28 10:25:19,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 148 [2023-01-28 10:25:19,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 969 places, 6452 transitions, 283811 flow. Second operand has 13 states, 13 states have (on average 59.38461538461539) internal successors, (772), 13 states have internal predecessors, (772), 0 states have call successors, (0), 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 10:25:19,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:25:19,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 148 [2023-01-28 10:25:19,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-01-28 10:25:55,157 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 10:25:55,157 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 10:25:55,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-28 10:25:55,352 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 10:25:55,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-01-28 10:25:55,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:25:55,553 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (13states, 56/148 universal loopers) in iteration 21,while PetriNetUnfolder was constructing finite prefix that currently has 277474 conditions, 16958 events (9679/16957 cut-off events. For 1199786/1199786 co-relation queries the response was YES. Maximal size of possible extension queue 1632. Compared 151688 event pairs, 7 based on Foata normal form. 27/18395 useless extension candidates. Maximal degree in co-relation 277209. Up to 4186 conditions per place.). [2023-01-28 10:25:55,555 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 10:25:55,555 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 10:25:55,555 INFO L445 BasicCegarLoop]: Path program histogram: [14, 5, 1, 1] [2023-01-28 10:25:55,558 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 10:25:55,558 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 10:25:55,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 10:25:55 BasicIcfg [2023-01-28 10:25:55,560 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 10:25:55,560 INFO L158 Benchmark]: Toolchain (without parser) took 816209.84ms. Allocated memory was 562.0MB in the beginning and 6.1GB in the end (delta: 5.5GB). Free memory was 505.7MB in the beginning and 1.7GB in the end (delta: -1.2GB). Peak memory consumption was 6.0GB. Max. memory is 16.0GB. [2023-01-28 10:25:55,560 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 377.5MB. Free memory is still 321.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 10:25:55,560 INFO L158 Benchmark]: CACSL2BoogieTranslator took 193.86ms. Allocated memory is still 562.0MB. Free memory was 505.4MB in the beginning and 494.6MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 10:25:55,561 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.06ms. Allocated memory is still 562.0MB. Free memory was 494.6MB in the beginning and 492.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 10:25:55,561 INFO L158 Benchmark]: Boogie Preprocessor took 33.88ms. Allocated memory is still 562.0MB. Free memory was 492.9MB in the beginning and 491.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 10:25:55,561 INFO L158 Benchmark]: RCFGBuilder took 458.40ms. Allocated memory is still 562.0MB. Free memory was 491.7MB in the beginning and 476.4MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-28 10:25:55,561 INFO L158 Benchmark]: TraceAbstraction took 815494.05ms. Allocated memory was 562.0MB in the beginning and 6.1GB in the end (delta: 5.5GB). Free memory was 475.7MB in the beginning and 1.7GB in the end (delta: -1.2GB). Peak memory consumption was 6.0GB. Max. memory is 16.0GB. [2023-01-28 10:25:55,562 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 377.5MB. Free memory is still 321.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 193.86ms. Allocated memory is still 562.0MB. Free memory was 505.4MB in the beginning and 494.6MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 25.06ms. Allocated memory is still 562.0MB. Free memory was 494.6MB in the beginning and 492.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 33.88ms. Allocated memory is still 562.0MB. Free memory was 492.9MB in the beginning and 491.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 458.40ms. Allocated memory is still 562.0MB. Free memory was 491.7MB in the beginning and 476.4MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 815494.05ms. Allocated memory was 562.0MB in the beginning and 6.1GB in the end (delta: 5.5GB). Free memory was 475.7MB in the beginning and 1.7GB in the end (delta: -1.2GB). Peak memory consumption was 6.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 74 PlacesBefore, 22 PlacesAfterwards, 73 TransitionsBefore, 17 TransitionsAfterwards, 396 CoEnabledTransitionPairs, 6 FixpointIterations, 40 TrivialSequentialCompositions, 12 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 65 TotalNumberOfCompositions, 617 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 529, independent: 504, independent conditional: 0, independent unconditional: 504, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 218, independent: 213, independent conditional: 0, independent unconditional: 213, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 529, independent: 291, independent conditional: 0, independent unconditional: 291, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 218, unknown conditional: 0, unknown unconditional: 218] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (13states, 56/148 universal loopers) in iteration 21,while PetriNetUnfolder was constructing finite prefix that currently has 277474 conditions, 16958 events (9679/16957 cut-off events. For 1199786/1199786 co-relation queries the response was YES. Maximal size of possible extension queue 1632. Compared 151688 event pairs, 7 based on Foata normal form. 27/18395 useless extension candidates. Maximal degree in co-relation 277209. Up to 4186 conditions per place.). - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (13states, 56/148 universal loopers) in iteration 21,while PetriNetUnfolder was constructing finite prefix that currently has 277474 conditions, 16958 events (9679/16957 cut-off events. For 1199786/1199786 co-relation queries the response was YES. Maximal size of possible extension queue 1632. Compared 151688 event pairs, 7 based on Foata normal form. 27/18395 useless extension candidates. Maximal degree in co-relation 277209. Up to 4186 conditions per place.). - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (13states, 56/148 universal loopers) in iteration 21,while PetriNetUnfolder was constructing finite prefix that currently has 277474 conditions, 16958 events (9679/16957 cut-off events. For 1199786/1199786 co-relation queries the response was YES. Maximal size of possible extension queue 1632. Compared 151688 event pairs, 7 based on Foata normal form. 27/18395 useless extension candidates. Maximal degree in co-relation 277209. Up to 4186 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 95 locations, 3 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: 815.4s, OverallIterations: 21, TraceHistogramMax: 3, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 758.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 4860 SdHoareTripleChecker+Valid, 73.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4860 mSDsluCounter, 49 SdHoareTripleChecker+Invalid, 70.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 107 IncrementalHoareTripleChecker+Unchecked, 33 mSDsCounter, 1194 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21150 IncrementalHoareTripleChecker+Invalid, 22452 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1194 mSolverCounterUnsat, 16 mSDtfsCounter, 21150 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1694 GetRequests, 399 SyntacticMatches, 27 SemanticMatches, 1268 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 37467 ImplicationChecksByTransitivity, 388.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=283811occurred in iteration=20, InterpolantAutomatonStates: 1082, 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: 0.1s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 48.9s InterpolantComputationTime, 726 NumberOfCodeBlocks, 726 NumberOfCodeBlocksAsserted, 58 NumberOfCheckSat, 1002 ConstructedInterpolants, 0 QuantifiedInterpolants, 34097 SizeOfPredicates, 164 NumberOfNonLiveVariables, 2247 ConjunctsInSsa, 462 ConjunctsInUnsatCore, 55 InterpolantComputations, 4 PerfectInterpolantSequences, 26/351 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown