./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-ticket-5.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/parallel-ticket-5.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 084d7ddce3c53222c6533ccae99969e854061e3b422eaf94457157515e3bd009 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 02:09:44,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 02:09:44,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 02:09:44,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 02:09:44,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 02:09:44,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 02:09:44,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 02:09:44,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 02:09:44,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 02:09:44,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 02:09:44,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 02:09:44,963 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 02:09:44,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 02:09:44,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 02:09:44,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 02:09:44,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 02:09:44,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 02:09:44,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 02:09:44,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 02:09:44,982 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 02:09:44,983 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 02:09:44,984 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 02:09:44,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 02:09:44,986 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 02:09:44,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 02:09:44,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 02:09:44,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 02:09:44,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 02:09:44,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 02:09:44,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 02:09:44,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 02:09:44,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 02:09:44,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 02:09:45,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 02:09:45,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 02:09:45,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 02:09:45,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 02:09:45,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 02:09:45,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 02:09:45,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 02:09:45,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 02:09:45,004 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 02:09:45,041 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 02:09:45,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 02:09:45,043 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 02:09:45,043 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 02:09:45,044 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 02:09:45,044 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 02:09:45,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 02:09:45,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 02:09:45,045 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 02:09:45,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 02:09:45,046 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 02:09:45,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 02:09:45,046 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 02:09:45,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 02:09:45,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 02:09:45,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 02:09:45,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 02:09:45,047 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 02:09:45,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 02:09:45,047 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 02:09:45,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 02:09:45,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 02:09:45,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 02:09:45,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 02:09:45,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 02:09:45,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 02:09:45,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 02:09:45,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 02:09:45,049 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 02:09:45,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 02:09:45,049 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 02:09:45,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 02:09:45,050 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 02:09:45,050 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 02:09:45,050 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 02:09:45,050 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 084d7ddce3c53222c6533ccae99969e854061e3b422eaf94457157515e3bd009 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 02:09:45,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 02:09:45,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 02:09:45,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 02:09:45,399 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 02:09:45,399 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 02:09:45,400 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-5.wvr.c [2023-08-31 02:09:46,652 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 02:09:46,857 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 02:09:46,857 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-5.wvr.c [2023-08-31 02:09:46,863 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ed9c1098/76bc5036cf3b48f39747e8295654a165/FLAGf1d1732c2 [2023-08-31 02:09:46,879 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ed9c1098/76bc5036cf3b48f39747e8295654a165 [2023-08-31 02:09:46,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 02:09:46,883 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 02:09:46,884 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 02:09:46,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 02:09:46,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 02:09:46,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 02:09:46" (1/1) ... [2023-08-31 02:09:46,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6189dbe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:09:46, skipping insertion in model container [2023-08-31 02:09:46,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 02:09:46" (1/1) ... [2023-08-31 02:09:46,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 02:09:46,926 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 02:09:47,122 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/parallel-ticket-5.wvr.c[3963,3976] [2023-08-31 02:09:47,130 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 02:09:47,140 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 02:09:47,179 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/parallel-ticket-5.wvr.c[3963,3976] [2023-08-31 02:09:47,186 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 02:09:47,196 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 02:09:47,196 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 02:09:47,202 INFO L208 MainTranslator]: Completed translation [2023-08-31 02:09:47,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:09:47 WrapperNode [2023-08-31 02:09:47,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 02:09:47,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 02:09:47,204 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 02:09:47,204 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 02:09:47,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:09:47" (1/1) ... [2023-08-31 02:09:47,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:09:47" (1/1) ... [2023-08-31 02:09:47,260 INFO L138 Inliner]: procedures = 24, calls = 85, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 247 [2023-08-31 02:09:47,260 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 02:09:47,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 02:09:47,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 02:09:47,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 02:09:47,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:09:47" (1/1) ... [2023-08-31 02:09:47,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:09:47" (1/1) ... [2023-08-31 02:09:47,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:09:47" (1/1) ... [2023-08-31 02:09:47,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:09:47" (1/1) ... [2023-08-31 02:09:47,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:09:47" (1/1) ... [2023-08-31 02:09:47,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:09:47" (1/1) ... [2023-08-31 02:09:47,296 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:09:47" (1/1) ... [2023-08-31 02:09:47,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:09:47" (1/1) ... [2023-08-31 02:09:47,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 02:09:47,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 02:09:47,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 02:09:47,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 02:09:47,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:09:47" (1/1) ... [2023-08-31 02:09:47,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 02:09:47,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:09:47,326 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) [2023-08-31 02:09:47,332 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 [2023-08-31 02:09:47,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 02:09:47,355 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 02:09:47,355 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 02:09:47,356 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 02:09:47,356 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 02:09:47,356 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-31 02:09:47,356 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-31 02:09:47,356 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-31 02:09:47,356 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-31 02:09:47,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 02:09:47,357 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-08-31 02:09:47,357 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-08-31 02:09:47,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 02:09:47,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 02:09:47,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 02:09:47,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 02:09:47,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 02:09:47,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 02:09:47,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 02:09:47,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 02:09:47,360 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 02:09:47,453 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 02:09:47,455 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 02:09:47,833 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 02:09:47,930 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 02:09:47,936 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 02:09:47,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 02:09:47 BoogieIcfgContainer [2023-08-31 02:09:47,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 02:09:47,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 02:09:47,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 02:09:47,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 02:09:47,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 02:09:46" (1/3) ... [2023-08-31 02:09:47,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@738bdbcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 02:09:47, skipping insertion in model container [2023-08-31 02:09:47,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:09:47" (2/3) ... [2023-08-31 02:09:47,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@738bdbcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 02:09:47, skipping insertion in model container [2023-08-31 02:09:47,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 02:09:47" (3/3) ... [2023-08-31 02:09:47,948 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-5.wvr.c [2023-08-31 02:09:47,955 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 02:09:47,964 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 02:09:47,964 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 02:09:47,964 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 02:09:48,067 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-31 02:09:48,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 167 transitions, 374 flow [2023-08-31 02:09:48,205 INFO L130 PetriNetUnfolder]: 2/162 cut-off events. [2023-08-31 02:09:48,206 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-31 02:09:48,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 162 events. 2/162 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 124. Up to 2 conditions per place. [2023-08-31 02:09:48,210 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 167 transitions, 374 flow [2023-08-31 02:09:48,230 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 148 transitions, 326 flow [2023-08-31 02:09:48,233 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 02:09:48,242 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 148 transitions, 326 flow [2023-08-31 02:09:48,245 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 148 transitions, 326 flow [2023-08-31 02:09:48,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 148 transitions, 326 flow [2023-08-31 02:09:48,277 INFO L130 PetriNetUnfolder]: 2/148 cut-off events. [2023-08-31 02:09:48,277 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-31 02:09:48,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 148 events. 2/148 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 124. Up to 2 conditions per place. [2023-08-31 02:09:48,280 INFO L119 LiptonReduction]: Number of co-enabled transitions 2082 [2023-08-31 02:09:52,588 INFO L134 LiptonReduction]: Checked pairs total: 10775 [2023-08-31 02:09:52,588 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-08-31 02:09:52,600 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 02:09:52,604 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@75844f97, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 02:09:52,604 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-31 02:09:52,614 INFO L130 PetriNetUnfolder]: 0/41 cut-off events. [2023-08-31 02:09:52,614 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-31 02:09:52,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:09:52,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:09:52,615 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-31 02:09:52,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:09:52,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1886582129, now seen corresponding path program 1 times [2023-08-31 02:09:52,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:09:52,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471690733] [2023-08-31 02:09:52,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:09:52,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:09:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:09:54,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:09:54,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:09:54,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471690733] [2023-08-31 02:09:54,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471690733] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:09:54,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:09:54,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-31 02:09:54,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013723510] [2023-08-31 02:09:54,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:09:54,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 02:09:54,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:09:54,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 02:09:54,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-08-31 02:09:54,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 281 [2023-08-31 02:09:54,623 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 42 transitions, 114 flow. Second operand has 8 states, 8 states have (on average 128.25) internal successors, (1026), 8 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:09:54,623 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:09:54,623 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 281 [2023-08-31 02:09:54,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:10:00,079 INFO L130 PetriNetUnfolder]: 64349/83635 cut-off events. [2023-08-31 02:10:00,079 INFO L131 PetriNetUnfolder]: For 5019/5019 co-relation queries the response was YES. [2023-08-31 02:10:00,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171328 conditions, 83635 events. 64349/83635 cut-off events. For 5019/5019 co-relation queries the response was YES. Maximal size of possible extension queue 2027. Compared 448494 event pairs, 14972 based on Foata normal form. 1/83636 useless extension candidates. Maximal degree in co-relation 170159. Up to 35393 conditions per place. [2023-08-31 02:10:00,706 INFO L137 encePairwiseOnDemand]: 268/281 looper letters, 153 selfloop transitions, 26 changer transitions 15/194 dead transitions. [2023-08-31 02:10:00,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 194 transitions, 875 flow [2023-08-31 02:10:00,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 02:10:00,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 02:10:00,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1302 transitions. [2023-08-31 02:10:00,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148279952550415 [2023-08-31 02:10:00,730 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1302 transitions. [2023-08-31 02:10:00,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1302 transitions. [2023-08-31 02:10:00,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:10:00,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1302 transitions. [2023-08-31 02:10:00,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 144.66666666666666) internal successors, (1302), 9 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:00,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:00,755 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:00,757 INFO L175 Difference]: Start difference. First operand has 58 places, 42 transitions, 114 flow. Second operand 9 states and 1302 transitions. [2023-08-31 02:10:00,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 194 transitions, 875 flow [2023-08-31 02:10:00,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 194 transitions, 809 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-08-31 02:10:00,920 INFO L231 Difference]: Finished difference. Result has 60 places, 74 transitions, 273 flow [2023-08-31 02:10:00,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=273, PETRI_PLACES=60, PETRI_TRANSITIONS=74} [2023-08-31 02:10:00,925 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2023-08-31 02:10:00,925 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 74 transitions, 273 flow [2023-08-31 02:10:00,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 128.25) internal successors, (1026), 8 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:00,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:10:00,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:10:00,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 02:10:00,927 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-31 02:10:00,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:10:00,928 INFO L85 PathProgramCache]: Analyzing trace with hash -169135167, now seen corresponding path program 2 times [2023-08-31 02:10:00,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:10:00,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641444253] [2023-08-31 02:10:00,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:10:00,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:10:00,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:10:01,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:10:01,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:10:01,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641444253] [2023-08-31 02:10:01,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641444253] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:10:01,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:10:01,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 02:10:01,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967312992] [2023-08-31 02:10:01,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:10:01,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 02:10:01,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:10:01,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 02:10:01,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-31 02:10:01,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-08-31 02:10:01,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 74 transitions, 273 flow. Second operand has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:01,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:10:01,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-08-31 02:10:01,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:10:03,515 INFO L130 PetriNetUnfolder]: 22462/32041 cut-off events. [2023-08-31 02:10:03,515 INFO L131 PetriNetUnfolder]: For 6920/7024 co-relation queries the response was YES. [2023-08-31 02:10:03,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72603 conditions, 32041 events. 22462/32041 cut-off events. For 6920/7024 co-relation queries the response was YES. Maximal size of possible extension queue 1524. Compared 206335 event pairs, 3182 based on Foata normal form. 472/30857 useless extension candidates. Maximal degree in co-relation 50401. Up to 22809 conditions per place. [2023-08-31 02:10:03,718 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 101 selfloop transitions, 25 changer transitions 0/158 dead transitions. [2023-08-31 02:10:03,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 158 transitions, 738 flow [2023-08-31 02:10:03,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 02:10:03,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 02:10:03,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1045 transitions. [2023-08-31 02:10:03,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5312658871377732 [2023-08-31 02:10:03,722 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1045 transitions. [2023-08-31 02:10:03,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1045 transitions. [2023-08-31 02:10:03,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:10:03,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1045 transitions. [2023-08-31 02:10:03,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 149.28571428571428) internal successors, (1045), 7 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:03,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:03,730 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:03,731 INFO L175 Difference]: Start difference. First operand has 60 places, 74 transitions, 273 flow. Second operand 7 states and 1045 transitions. [2023-08-31 02:10:03,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 158 transitions, 738 flow [2023-08-31 02:10:03,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 158 transitions, 731 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-31 02:10:03,877 INFO L231 Difference]: Finished difference. Result has 68 places, 92 transitions, 390 flow [2023-08-31 02:10:03,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=390, PETRI_PLACES=68, PETRI_TRANSITIONS=92} [2023-08-31 02:10:03,878 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2023-08-31 02:10:03,879 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 92 transitions, 390 flow [2023-08-31 02:10:03,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:03,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:10:03,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:10:03,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 02:10:03,880 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-31 02:10:03,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:10:03,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1209127043, now seen corresponding path program 3 times [2023-08-31 02:10:03,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:10:03,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846848915] [2023-08-31 02:10:03,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:10:03,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:10:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:10:04,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:10:04,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:10:04,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846848915] [2023-08-31 02:10:04,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846848915] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:10:04,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:10:04,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 02:10:04,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626184056] [2023-08-31 02:10:04,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:10:04,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 02:10:04,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:10:04,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 02:10:04,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-31 02:10:04,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-08-31 02:10:04,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 92 transitions, 390 flow. Second operand has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:04,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:10:04,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-08-31 02:10:04,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:10:06,641 INFO L130 PetriNetUnfolder]: 19232/28041 cut-off events. [2023-08-31 02:10:06,641 INFO L131 PetriNetUnfolder]: For 17437/18411 co-relation queries the response was YES. [2023-08-31 02:10:06,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77155 conditions, 28041 events. 19232/28041 cut-off events. For 17437/18411 co-relation queries the response was YES. Maximal size of possible extension queue 1177. Compared 184532 event pairs, 3723 based on Foata normal form. 896/27579 useless extension candidates. Maximal degree in co-relation 50573. Up to 19959 conditions per place. [2023-08-31 02:10:06,821 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 97 selfloop transitions, 36 changer transitions 0/164 dead transitions. [2023-08-31 02:10:06,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 164 transitions, 886 flow [2023-08-31 02:10:06,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 02:10:06,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 02:10:06,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1039 transitions. [2023-08-31 02:10:06,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5282155566853076 [2023-08-31 02:10:06,825 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1039 transitions. [2023-08-31 02:10:06,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1039 transitions. [2023-08-31 02:10:06,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:10:06,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1039 transitions. [2023-08-31 02:10:06,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 148.42857142857142) internal successors, (1039), 7 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:06,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:06,834 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:06,834 INFO L175 Difference]: Start difference. First operand has 68 places, 92 transitions, 390 flow. Second operand 7 states and 1039 transitions. [2023-08-31 02:10:06,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 164 transitions, 886 flow [2023-08-31 02:10:06,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 164 transitions, 880 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 02:10:06,949 INFO L231 Difference]: Finished difference. Result has 75 places, 104 transitions, 534 flow [2023-08-31 02:10:06,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=534, PETRI_PLACES=75, PETRI_TRANSITIONS=104} [2023-08-31 02:10:06,950 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2023-08-31 02:10:06,950 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 104 transitions, 534 flow [2023-08-31 02:10:06,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:06,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:10:06,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:10:06,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 02:10:06,952 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-31 02:10:06,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:10:06,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1580156935, now seen corresponding path program 4 times [2023-08-31 02:10:06,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:10:06,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745394438] [2023-08-31 02:10:06,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:10:06,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:10:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:10:07,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:10:07,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:10:07,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745394438] [2023-08-31 02:10:07,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745394438] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:10:07,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:10:07,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-31 02:10:07,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973581523] [2023-08-31 02:10:07,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:10:07,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 02:10:07,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:10:07,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 02:10:07,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-31 02:10:07,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-08-31 02:10:07,358 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 104 transitions, 534 flow. Second operand has 7 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:07,358 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:10:07,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-08-31 02:10:07,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:10:11,561 INFO L130 PetriNetUnfolder]: 43502/65145 cut-off events. [2023-08-31 02:10:11,561 INFO L131 PetriNetUnfolder]: For 57077/57949 co-relation queries the response was YES. [2023-08-31 02:10:11,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186197 conditions, 65145 events. 43502/65145 cut-off events. For 57077/57949 co-relation queries the response was YES. Maximal size of possible extension queue 3147. Compared 507173 event pairs, 6834 based on Foata normal form. 868/63085 useless extension candidates. Maximal degree in co-relation 111031. Up to 19576 conditions per place. [2023-08-31 02:10:12,338 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 134 selfloop transitions, 85 changer transitions 0/250 dead transitions. [2023-08-31 02:10:12,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 250 transitions, 1560 flow [2023-08-31 02:10:12,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 02:10:12,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 02:10:12,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1347 transitions. [2023-08-31 02:10:12,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5326215895610913 [2023-08-31 02:10:12,344 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1347 transitions. [2023-08-31 02:10:12,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1347 transitions. [2023-08-31 02:10:12,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:10:12,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1347 transitions. [2023-08-31 02:10:12,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 149.66666666666666) internal successors, (1347), 9 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:12,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:12,353 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:12,353 INFO L175 Difference]: Start difference. First operand has 75 places, 104 transitions, 534 flow. Second operand 9 states and 1347 transitions. [2023-08-31 02:10:12,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 250 transitions, 1560 flow [2023-08-31 02:10:13,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 250 transitions, 1554 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 02:10:13,421 INFO L231 Difference]: Finished difference. Result has 86 places, 155 transitions, 1138 flow [2023-08-31 02:10:13,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1138, PETRI_PLACES=86, PETRI_TRANSITIONS=155} [2023-08-31 02:10:13,422 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 28 predicate places. [2023-08-31 02:10:13,422 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 155 transitions, 1138 flow [2023-08-31 02:10:13,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:13,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:10:13,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:10:13,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 02:10:13,423 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-31 02:10:13,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:10:13,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1901603651, now seen corresponding path program 5 times [2023-08-31 02:10:13,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:10:13,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903598605] [2023-08-31 02:10:13,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:10:13,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:10:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:10:13,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:10:13,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:10:13,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903598605] [2023-08-31 02:10:13,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903598605] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:10:13,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:10:13,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 02:10:13,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117975309] [2023-08-31 02:10:13,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:10:13,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 02:10:13,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:10:13,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 02:10:13,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-31 02:10:13,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-08-31 02:10:13,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 155 transitions, 1138 flow. Second operand has 8 states, 8 states have (on average 135.5) internal successors, (1084), 8 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:13,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:10:13,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-08-31 02:10:13,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:10:20,126 INFO L130 PetriNetUnfolder]: 53657/81911 cut-off events. [2023-08-31 02:10:20,126 INFO L131 PetriNetUnfolder]: For 163467/170473 co-relation queries the response was YES. [2023-08-31 02:10:20,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286265 conditions, 81911 events. 53657/81911 cut-off events. For 163467/170473 co-relation queries the response was YES. Maximal size of possible extension queue 4020. Compared 678860 event pairs, 9236 based on Foata normal form. 1728/80203 useless extension candidates. Maximal degree in co-relation 160961. Up to 22391 conditions per place. [2023-08-31 02:10:20,709 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 145 selfloop transitions, 178 changer transitions 3/357 dead transitions. [2023-08-31 02:10:20,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 357 transitions, 2957 flow [2023-08-31 02:10:20,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 02:10:20,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 02:10:20,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1642 transitions. [2023-08-31 02:10:20,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5312196700097056 [2023-08-31 02:10:20,715 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1642 transitions. [2023-08-31 02:10:20,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1642 transitions. [2023-08-31 02:10:20,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:10:20,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1642 transitions. [2023-08-31 02:10:20,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 149.27272727272728) internal successors, (1642), 11 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:20,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 281.0) internal successors, (3372), 12 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:20,724 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 281.0) internal successors, (3372), 12 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:20,724 INFO L175 Difference]: Start difference. First operand has 86 places, 155 transitions, 1138 flow. Second operand 11 states and 1642 transitions. [2023-08-31 02:10:20,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 357 transitions, 2957 flow [2023-08-31 02:10:22,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 357 transitions, 2911 flow, removed 20 selfloop flow, removed 1 redundant places. [2023-08-31 02:10:22,773 INFO L231 Difference]: Finished difference. Result has 100 places, 250 transitions, 2543 flow [2023-08-31 02:10:22,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=1108, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2543, PETRI_PLACES=100, PETRI_TRANSITIONS=250} [2023-08-31 02:10:22,774 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 42 predicate places. [2023-08-31 02:10:22,774 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 250 transitions, 2543 flow [2023-08-31 02:10:22,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.5) internal successors, (1084), 8 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:22,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:10:22,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:10:22,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 02:10:22,776 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-31 02:10:22,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:10:22,776 INFO L85 PathProgramCache]: Analyzing trace with hash 480139849, now seen corresponding path program 6 times [2023-08-31 02:10:22,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:10:22,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271092643] [2023-08-31 02:10:22,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:10:22,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:10:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:10:23,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:10:23,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:10:23,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271092643] [2023-08-31 02:10:23,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271092643] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:10:23,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:10:23,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 02:10:23,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803419090] [2023-08-31 02:10:23,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:10:23,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 02:10:23,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:10:23,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 02:10:23,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-31 02:10:23,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-08-31 02:10:23,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 250 transitions, 2543 flow. Second operand has 10 states, 10 states have (on average 134.6) internal successors, (1346), 10 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:23,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:10:23,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-08-31 02:10:23,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:10:30,906 INFO L130 PetriNetUnfolder]: 52963/80980 cut-off events. [2023-08-31 02:10:30,907 INFO L131 PetriNetUnfolder]: For 327024/341072 co-relation queries the response was YES. [2023-08-31 02:10:31,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344916 conditions, 80980 events. 52963/80980 cut-off events. For 327024/341072 co-relation queries the response was YES. Maximal size of possible extension queue 4072. Compared 667582 event pairs, 15921 based on Foata normal form. 4340/82124 useless extension candidates. Maximal degree in co-relation 264833. Up to 58116 conditions per place. [2023-08-31 02:10:31,574 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 266 selfloop transitions, 184 changer transitions 16/495 dead transitions. [2023-08-31 02:10:31,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 495 transitions, 5235 flow [2023-08-31 02:10:31,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-31 02:10:31,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-31 02:10:31,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2778 transitions. [2023-08-31 02:10:31,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5203221577074358 [2023-08-31 02:10:31,581 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2778 transitions. [2023-08-31 02:10:31,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2778 transitions. [2023-08-31 02:10:31,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:10:31,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2778 transitions. [2023-08-31 02:10:31,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 146.21052631578948) internal successors, (2778), 19 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:31,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 281.0) internal successors, (5620), 20 states have internal predecessors, (5620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:31,596 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 281.0) internal successors, (5620), 20 states have internal predecessors, (5620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:31,597 INFO L175 Difference]: Start difference. First operand has 100 places, 250 transitions, 2543 flow. Second operand 19 states and 2778 transitions. [2023-08-31 02:10:31,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 495 transitions, 5235 flow [2023-08-31 02:10:34,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 495 transitions, 5102 flow, removed 61 selfloop flow, removed 2 redundant places. [2023-08-31 02:10:34,076 INFO L231 Difference]: Finished difference. Result has 125 places, 321 transitions, 3939 flow [2023-08-31 02:10:34,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=2295, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3939, PETRI_PLACES=125, PETRI_TRANSITIONS=321} [2023-08-31 02:10:34,077 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 67 predicate places. [2023-08-31 02:10:34,077 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 321 transitions, 3939 flow [2023-08-31 02:10:34,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 134.6) internal successors, (1346), 10 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:34,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:10:34,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:10:34,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 02:10:34,078 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-31 02:10:34,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:10:34,079 INFO L85 PathProgramCache]: Analyzing trace with hash -72860955, now seen corresponding path program 7 times [2023-08-31 02:10:34,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:10:34,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111193038] [2023-08-31 02:10:34,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:10:34,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:10:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:10:34,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:10:34,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:10:34,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111193038] [2023-08-31 02:10:34,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111193038] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:10:34,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:10:34,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-31 02:10:34,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151577475] [2023-08-31 02:10:34,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:10:34,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 02:10:34,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:10:34,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 02:10:34,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-31 02:10:34,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 281 [2023-08-31 02:10:34,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 321 transitions, 3939 flow. Second operand has 7 states, 7 states have (on average 137.14285714285714) internal successors, (960), 7 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:34,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:10:34,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 281 [2023-08-31 02:10:34,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:10:43,011 INFO L130 PetriNetUnfolder]: 52693/80659 cut-off events. [2023-08-31 02:10:43,011 INFO L131 PetriNetUnfolder]: For 470916/484287 co-relation queries the response was YES. [2023-08-31 02:10:43,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373274 conditions, 80659 events. 52693/80659 cut-off events. For 470916/484287 co-relation queries the response was YES. Maximal size of possible extension queue 4008. Compared 664669 event pairs, 16059 based on Foata normal form. 1300/78809 useless extension candidates. Maximal degree in co-relation 296902. Up to 62649 conditions per place. [2023-08-31 02:10:43,792 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 200 selfloop transitions, 159 changer transitions 16/404 dead transitions. [2023-08-31 02:10:43,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 404 transitions, 5302 flow [2023-08-31 02:10:43,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 02:10:43,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 02:10:43,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1327 transitions. [2023-08-31 02:10:43,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5247133254250692 [2023-08-31 02:10:43,796 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1327 transitions. [2023-08-31 02:10:43,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1327 transitions. [2023-08-31 02:10:43,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:10:43,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1327 transitions. [2023-08-31 02:10:43,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 147.44444444444446) internal successors, (1327), 9 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:43,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:43,803 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:43,803 INFO L175 Difference]: Start difference. First operand has 125 places, 321 transitions, 3939 flow. Second operand 9 states and 1327 transitions. [2023-08-31 02:10:43,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 404 transitions, 5302 flow [2023-08-31 02:10:47,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 404 transitions, 5189 flow, removed 17 selfloop flow, removed 7 redundant places. [2023-08-31 02:10:47,446 INFO L231 Difference]: Finished difference. Result has 128 places, 335 transitions, 4563 flow [2023-08-31 02:10:47,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=3706, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4563, PETRI_PLACES=128, PETRI_TRANSITIONS=335} [2023-08-31 02:10:47,447 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 70 predicate places. [2023-08-31 02:10:47,448 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 335 transitions, 4563 flow [2023-08-31 02:10:47,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 137.14285714285714) internal successors, (960), 7 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:47,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:10:47,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:10:47,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 02:10:47,449 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-31 02:10:47,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:10:47,449 INFO L85 PathProgramCache]: Analyzing trace with hash -156230979, now seen corresponding path program 8 times [2023-08-31 02:10:47,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:10:47,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658484401] [2023-08-31 02:10:47,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:10:47,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:10:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:10:47,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:10:47,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:10:47,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658484401] [2023-08-31 02:10:47,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658484401] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:10:47,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:10:47,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 02:10:47,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037452633] [2023-08-31 02:10:47,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:10:47,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 02:10:47,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:10:47,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 02:10:47,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-31 02:10:47,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-08-31 02:10:47,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 335 transitions, 4563 flow. Second operand has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:47,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:10:47,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-08-31 02:10:47,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:10:55,465 INFO L130 PetriNetUnfolder]: 47585/73441 cut-off events. [2023-08-31 02:10:55,466 INFO L131 PetriNetUnfolder]: For 433084/441886 co-relation queries the response was YES. [2023-08-31 02:10:55,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 341779 conditions, 73441 events. 47585/73441 cut-off events. For 433084/441886 co-relation queries the response was YES. Maximal size of possible extension queue 3871. Compared 607612 event pairs, 15596 based on Foata normal form. 1202/71697 useless extension candidates. Maximal degree in co-relation 341326. Up to 57735 conditions per place. [2023-08-31 02:10:56,169 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 178 selfloop transitions, 151 changer transitions 20/377 dead transitions. [2023-08-31 02:10:56,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 377 transitions, 5533 flow [2023-08-31 02:10:56,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 02:10:56,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 02:10:56,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1018 transitions. [2023-08-31 02:10:56,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175394001016776 [2023-08-31 02:10:56,172 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1018 transitions. [2023-08-31 02:10:56,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1018 transitions. [2023-08-31 02:10:56,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:10:56,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1018 transitions. [2023-08-31 02:10:56,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 145.42857142857142) internal successors, (1018), 7 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:56,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:56,180 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:56,180 INFO L175 Difference]: Start difference. First operand has 128 places, 335 transitions, 4563 flow. Second operand 7 states and 1018 transitions. [2023-08-31 02:10:56,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 377 transitions, 5533 flow [2023-08-31 02:10:58,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 377 transitions, 5353 flow, removed 8 selfloop flow, removed 7 redundant places. [2023-08-31 02:10:58,013 INFO L231 Difference]: Finished difference. Result has 126 places, 324 transitions, 4751 flow [2023-08-31 02:10:58,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=4010, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4751, PETRI_PLACES=126, PETRI_TRANSITIONS=324} [2023-08-31 02:10:58,014 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 68 predicate places. [2023-08-31 02:10:58,014 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 324 transitions, 4751 flow [2023-08-31 02:10:58,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:58,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:10:58,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:10:58,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 02:10:58,016 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-31 02:10:58,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:10:58,016 INFO L85 PathProgramCache]: Analyzing trace with hash -977038993, now seen corresponding path program 9 times [2023-08-31 02:10:58,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:10:58,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093776169] [2023-08-31 02:10:58,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:10:58,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:10:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:10:58,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:10:58,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:10:58,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093776169] [2023-08-31 02:10:58,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093776169] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:10:58,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:10:58,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 02:10:58,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515496422] [2023-08-31 02:10:58,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:10:58,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 02:10:58,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:10:58,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 02:10:58,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-31 02:10:58,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-08-31 02:10:58,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 324 transitions, 4751 flow. Second operand has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:10:58,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:10:58,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-08-31 02:10:58,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:11:05,987 INFO L130 PetriNetUnfolder]: 45993/71560 cut-off events. [2023-08-31 02:11:05,987 INFO L131 PetriNetUnfolder]: For 392738/402925 co-relation queries the response was YES. [2023-08-31 02:11:06,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329380 conditions, 71560 events. 45993/71560 cut-off events. For 392738/402925 co-relation queries the response was YES. Maximal size of possible extension queue 3768. Compared 598508 event pairs, 16223 based on Foata normal form. 932/69863 useless extension candidates. Maximal degree in co-relation 329344. Up to 58847 conditions per place. [2023-08-31 02:11:06,667 INFO L137 encePairwiseOnDemand]: 273/281 looper letters, 295 selfloop transitions, 50 changer transitions 0/372 dead transitions. [2023-08-31 02:11:06,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 372 transitions, 5883 flow [2023-08-31 02:11:06,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 02:11:06,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 02:11:06,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 728 transitions. [2023-08-31 02:11:06,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5181494661921708 [2023-08-31 02:11:06,669 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 728 transitions. [2023-08-31 02:11:06,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 728 transitions. [2023-08-31 02:11:06,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:11:06,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 728 transitions. [2023-08-31 02:11:06,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.6) internal successors, (728), 5 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:11:06,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:11:06,672 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:11:06,672 INFO L175 Difference]: Start difference. First operand has 126 places, 324 transitions, 4751 flow. Second operand 5 states and 728 transitions. [2023-08-31 02:11:06,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 372 transitions, 5883 flow [2023-08-31 02:11:08,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 372 transitions, 5655 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-08-31 02:11:08,957 INFO L231 Difference]: Finished difference. Result has 113 places, 332 transitions, 4836 flow [2023-08-31 02:11:08,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=4383, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4836, PETRI_PLACES=113, PETRI_TRANSITIONS=332} [2023-08-31 02:11:08,957 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 55 predicate places. [2023-08-31 02:11:08,957 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 332 transitions, 4836 flow [2023-08-31 02:11:08,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:11:08,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:11:08,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:11:08,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 02:11:08,958 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-31 02:11:08,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:11:08,959 INFO L85 PathProgramCache]: Analyzing trace with hash -444821677, now seen corresponding path program 10 times [2023-08-31 02:11:08,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:11:08,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902906087] [2023-08-31 02:11:08,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:11:08,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:11:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:11:09,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:11:09,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:11:09,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902906087] [2023-08-31 02:11:09,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902906087] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:11:09,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:11:09,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 02:11:09,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089438208] [2023-08-31 02:11:09,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:11:09,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 02:11:09,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:11:09,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 02:11:09,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-31 02:11:09,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-08-31 02:11:09,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 332 transitions, 4836 flow. Second operand has 8 states, 8 states have (on average 135.5) internal successors, (1084), 8 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:11:09,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:11:09,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-08-31 02:11:09,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:11:16,482 INFO L130 PetriNetUnfolder]: 45908/71973 cut-off events. [2023-08-31 02:11:16,482 INFO L131 PetriNetUnfolder]: For 355428/365764 co-relation queries the response was YES. [2023-08-31 02:11:16,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317514 conditions, 71973 events. 45908/71973 cut-off events. For 355428/365764 co-relation queries the response was YES. Maximal size of possible extension queue 3721. Compared 605377 event pairs, 9981 based on Foata normal form. 2652/71980 useless extension candidates. Maximal degree in co-relation 317481. Up to 44942 conditions per place. [2023-08-31 02:11:17,414 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 231 selfloop transitions, 238 changer transitions 0/496 dead transitions. [2023-08-31 02:11:17,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 496 transitions, 7138 flow [2023-08-31 02:11:17,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 02:11:17,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 02:11:17,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1605 transitions. [2023-08-31 02:11:17,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192494338401812 [2023-08-31 02:11:17,417 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1605 transitions. [2023-08-31 02:11:17,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1605 transitions. [2023-08-31 02:11:17,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:11:17,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1605 transitions. [2023-08-31 02:11:17,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 145.9090909090909) internal successors, (1605), 11 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:11:17,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 281.0) internal successors, (3372), 12 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:11:17,425 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 281.0) internal successors, (3372), 12 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:11:17,425 INFO L175 Difference]: Start difference. First operand has 113 places, 332 transitions, 4836 flow. Second operand 11 states and 1605 transitions. [2023-08-31 02:11:17,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 496 transitions, 7138 flow [2023-08-31 02:11:18,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 496 transitions, 7088 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 02:11:18,597 INFO L231 Difference]: Finished difference. Result has 123 places, 386 transitions, 6192 flow [2023-08-31 02:11:18,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=4786, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6192, PETRI_PLACES=123, PETRI_TRANSITIONS=386} [2023-08-31 02:11:18,599 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 65 predicate places. [2023-08-31 02:11:18,599 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 386 transitions, 6192 flow [2023-08-31 02:11:18,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.5) internal successors, (1084), 8 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:11:18,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:11:18,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:11:18,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 02:11:18,600 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-31 02:11:18,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:11:18,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1085046347, now seen corresponding path program 11 times [2023-08-31 02:11:18,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:11:18,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020955723] [2023-08-31 02:11:18,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:11:18,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:11:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:11:18,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:11:18,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:11:18,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020955723] [2023-08-31 02:11:18,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020955723] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:11:18,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:11:18,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 02:11:18,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999689765] [2023-08-31 02:11:18,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:11:18,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 02:11:18,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:11:18,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 02:11:18,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-31 02:11:18,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-08-31 02:11:18,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 386 transitions, 6192 flow. Second operand has 8 states, 8 states have (on average 135.5) internal successors, (1084), 8 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:11:18,834 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:11:18,834 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-08-31 02:11:18,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:11:26,629 INFO L130 PetriNetUnfolder]: 46704/73161 cut-off events. [2023-08-31 02:11:26,629 INFO L131 PetriNetUnfolder]: For 460825/474473 co-relation queries the response was YES. [2023-08-31 02:11:27,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347926 conditions, 73161 events. 46704/73161 cut-off events. For 460825/474473 co-relation queries the response was YES. Maximal size of possible extension queue 3753. Compared 615344 event pairs, 10463 based on Foata normal form. 4456/74946 useless extension candidates. Maximal degree in co-relation 347891. Up to 45586 conditions per place. [2023-08-31 02:11:27,624 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 232 selfloop transitions, 250 changer transitions 0/509 dead transitions. [2023-08-31 02:11:27,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 509 transitions, 8028 flow [2023-08-31 02:11:27,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 02:11:27,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 02:11:27,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1611 transitions. [2023-08-31 02:11:27,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.521190553219023 [2023-08-31 02:11:27,627 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1611 transitions. [2023-08-31 02:11:27,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1611 transitions. [2023-08-31 02:11:27,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:11:27,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1611 transitions. [2023-08-31 02:11:27,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 146.45454545454547) internal successors, (1611), 11 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) [2023-08-31 02:11:27,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 281.0) internal successors, (3372), 12 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:11:27,634 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 281.0) internal successors, (3372), 12 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:11:27,635 INFO L175 Difference]: Start difference. First operand has 123 places, 386 transitions, 6192 flow. Second operand 11 states and 1611 transitions. [2023-08-31 02:11:27,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 509 transitions, 8028 flow [2023-08-31 02:11:29,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 509 transitions, 7694 flow, removed 17 selfloop flow, removed 5 redundant places. [2023-08-31 02:11:29,095 INFO L231 Difference]: Finished difference. Result has 130 places, 405 transitions, 6867 flow [2023-08-31 02:11:29,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=5874, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6867, PETRI_PLACES=130, PETRI_TRANSITIONS=405} [2023-08-31 02:11:29,096 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 72 predicate places. [2023-08-31 02:11:29,096 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 405 transitions, 6867 flow [2023-08-31 02:11:29,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.5) internal successors, (1084), 8 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:11:29,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:11:29,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:11:29,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 02:11:29,097 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-31 02:11:29,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:11:29,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1710255359, now seen corresponding path program 12 times [2023-08-31 02:11:29,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:11:29,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970225294] [2023-08-31 02:11:29,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:11:29,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:11:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:11:29,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:11:29,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:11:29,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970225294] [2023-08-31 02:11:29,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970225294] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:11:29,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:11:29,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-31 02:11:29,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927465438] [2023-08-31 02:11:29,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:11:29,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 02:11:29,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:11:29,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 02:11:29,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-31 02:11:29,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-08-31 02:11:29,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 405 transitions, 6867 flow. Second operand has 7 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:11:29,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:11:29,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-08-31 02:11:29,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:11:37,880 INFO L130 PetriNetUnfolder]: 47161/74505 cut-off events. [2023-08-31 02:11:37,880 INFO L131 PetriNetUnfolder]: For 530125/551656 co-relation queries the response was YES. [2023-08-31 02:11:38,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373452 conditions, 74505 events. 47161/74505 cut-off events. For 530125/551656 co-relation queries the response was YES. Maximal size of possible extension queue 3938. Compared 639660 event pairs, 8013 based on Foata normal form. 8133/79817 useless extension candidates. Maximal degree in co-relation 373415. Up to 31268 conditions per place. [2023-08-31 02:11:38,559 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 193 selfloop transitions, 327 changer transitions 6/553 dead transitions. [2023-08-31 02:11:38,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 553 transitions, 9176 flow [2023-08-31 02:11:38,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 02:11:38,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 02:11:38,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1340 transitions. [2023-08-31 02:11:38,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5298536971134836 [2023-08-31 02:11:38,561 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1340 transitions. [2023-08-31 02:11:38,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1340 transitions. [2023-08-31 02:11:38,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:11:38,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1340 transitions. [2023-08-31 02:11:38,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 148.88888888888889) internal successors, (1340), 9 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:11:38,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:11:38,565 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:11:38,565 INFO L175 Difference]: Start difference. First operand has 130 places, 405 transitions, 6867 flow. Second operand 9 states and 1340 transitions. [2023-08-31 02:11:38,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 553 transitions, 9176 flow [2023-08-31 02:11:40,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 553 transitions, 8967 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-08-31 02:11:40,944 INFO L231 Difference]: Finished difference. Result has 135 places, 445 transitions, 8175 flow [2023-08-31 02:11:40,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=6696, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=285, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8175, PETRI_PLACES=135, PETRI_TRANSITIONS=445} [2023-08-31 02:11:40,946 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 77 predicate places. [2023-08-31 02:11:40,946 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 445 transitions, 8175 flow [2023-08-31 02:11:40,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:11:40,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:11:40,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:11:40,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 02:11:40,947 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-31 02:11:40,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:11:40,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1006455521, now seen corresponding path program 13 times [2023-08-31 02:11:40,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:11:40,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015609397] [2023-08-31 02:11:40,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:11:40,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:11:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:11:41,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:11:41,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:11:41,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015609397] [2023-08-31 02:11:41,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015609397] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:11:41,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:11:41,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-31 02:11:41,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839324740] [2023-08-31 02:11:41,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:11:41,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 02:11:41,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:11:41,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 02:11:41,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-31 02:11:41,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-08-31 02:11:41,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 445 transitions, 8175 flow. Second operand has 11 states, 11 states have (on average 134.27272727272728) internal successors, (1477), 11 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:11:41,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:11:41,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-08-31 02:11:41,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:11:52,486 INFO L130 PetriNetUnfolder]: 55494/88480 cut-off events. [2023-08-31 02:11:52,486 INFO L131 PetriNetUnfolder]: For 824747/847499 co-relation queries the response was YES. [2023-08-31 02:11:53,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470900 conditions, 88480 events. 55494/88480 cut-off events. For 824747/847499 co-relation queries the response was YES. Maximal size of possible extension queue 4912. Compared 791366 event pairs, 13611 based on Foata normal form. 7426/92345 useless extension candidates. Maximal degree in co-relation 470862. Up to 47855 conditions per place. [2023-08-31 02:11:53,676 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 342 selfloop transitions, 316 changer transitions 1/686 dead transitions. [2023-08-31 02:11:53,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 686 transitions, 12055 flow [2023-08-31 02:11:53,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-31 02:11:53,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-31 02:11:53,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2623 transitions. [2023-08-31 02:11:53,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518584420719652 [2023-08-31 02:11:53,680 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2623 transitions. [2023-08-31 02:11:53,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2623 transitions. [2023-08-31 02:11:53,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:11:53,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2623 transitions. [2023-08-31 02:11:53,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 145.72222222222223) internal successors, (2623), 18 states have internal predecessors, (2623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:11:53,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 281.0) internal successors, (5339), 19 states have internal predecessors, (5339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:11:53,687 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 281.0) internal successors, (5339), 19 states have internal predecessors, (5339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:11:53,687 INFO L175 Difference]: Start difference. First operand has 135 places, 445 transitions, 8175 flow. Second operand 18 states and 2623 transitions. [2023-08-31 02:11:53,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 686 transitions, 12055 flow [2023-08-31 02:11:56,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 686 transitions, 11573 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 02:11:56,687 INFO L231 Difference]: Finished difference. Result has 153 places, 542 transitions, 10556 flow [2023-08-31 02:11:56,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=7809, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=10556, PETRI_PLACES=153, PETRI_TRANSITIONS=542} [2023-08-31 02:11:56,688 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 95 predicate places. [2023-08-31 02:11:56,688 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 542 transitions, 10556 flow [2023-08-31 02:11:56,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 134.27272727272728) internal successors, (1477), 11 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:11:56,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:11:56,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:11:56,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-31 02:11:56,689 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-31 02:11:56,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:11:56,689 INFO L85 PathProgramCache]: Analyzing trace with hash -27895093, now seen corresponding path program 14 times [2023-08-31 02:11:56,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:11:56,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559515172] [2023-08-31 02:11:56,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:11:56,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:11:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:11:56,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:11:56,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:11:56,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559515172] [2023-08-31 02:11:56,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559515172] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:11:56,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:11:56,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 02:11:56,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721110986] [2023-08-31 02:11:56,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:11:56,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 02:11:56,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:11:56,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 02:11:56,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-31 02:11:56,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-08-31 02:11:56,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 542 transitions, 10556 flow. Second operand has 8 states, 8 states have (on average 135.5) internal successors, (1084), 8 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:11:56,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:11:56,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-08-31 02:11:56,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:12:09,607 INFO L130 PetriNetUnfolder]: 55468/88956 cut-off events. [2023-08-31 02:12:09,608 INFO L131 PetriNetUnfolder]: For 1006395/1028238 co-relation queries the response was YES. [2023-08-31 02:12:10,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493933 conditions, 88956 events. 55468/88956 cut-off events. For 1006395/1028238 co-relation queries the response was YES. Maximal size of possible extension queue 4801. Compared 799264 event pairs, 16756 based on Foata normal form. 3102/88762 useless extension candidates. Maximal degree in co-relation 493890. Up to 67607 conditions per place. [2023-08-31 02:12:10,815 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 454 selfloop transitions, 226 changer transitions 11/718 dead transitions. [2023-08-31 02:12:10,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 718 transitions, 14442 flow [2023-08-31 02:12:10,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 02:12:10,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 02:12:10,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1745 transitions. [2023-08-31 02:12:10,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.517497034400949 [2023-08-31 02:12:10,819 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1745 transitions. [2023-08-31 02:12:10,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1745 transitions. [2023-08-31 02:12:10,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:12:10,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1745 transitions. [2023-08-31 02:12:10,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 145.41666666666666) internal successors, (1745), 12 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:12:10,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 281.0) internal successors, (3653), 13 states have internal predecessors, (3653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:12:10,825 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 281.0) internal successors, (3653), 13 states have internal predecessors, (3653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:12:10,825 INFO L175 Difference]: Start difference. First operand has 153 places, 542 transitions, 10556 flow. Second operand 12 states and 1745 transitions. [2023-08-31 02:12:10,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 718 transitions, 14442 flow [2023-08-31 02:12:16,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 718 transitions, 14095 flow, removed 61 selfloop flow, removed 5 redundant places. [2023-08-31 02:12:16,055 INFO L231 Difference]: Finished difference. Result has 160 places, 604 transitions, 12381 flow [2023-08-31 02:12:16,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=10279, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12381, PETRI_PLACES=160, PETRI_TRANSITIONS=604} [2023-08-31 02:12:16,056 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 102 predicate places. [2023-08-31 02:12:16,056 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 604 transitions, 12381 flow [2023-08-31 02:12:16,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.5) internal successors, (1084), 8 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:12:16,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:12:16,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:12:16,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-31 02:12:16,057 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-31 02:12:16,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:12:16,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1533231369, now seen corresponding path program 15 times [2023-08-31 02:12:16,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:12:16,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734902154] [2023-08-31 02:12:16,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:12:16,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:12:16,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:12:16,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:12:16,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:12:16,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734902154] [2023-08-31 02:12:16,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734902154] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:12:16,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:12:16,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 02:12:16,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034231132] [2023-08-31 02:12:16,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:12:16,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 02:12:16,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:12:16,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 02:12:16,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-31 02:12:16,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 281 [2023-08-31 02:12:16,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 604 transitions, 12381 flow. Second operand has 8 states, 8 states have (on average 132.625) internal successors, (1061), 8 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:12:16,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:12:16,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 281 [2023-08-31 02:12:16,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:12:31,574 INFO L130 PetriNetUnfolder]: 65738/102560 cut-off events. [2023-08-31 02:12:31,574 INFO L131 PetriNetUnfolder]: For 1111410/1127659 co-relation queries the response was YES. [2023-08-31 02:12:32,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 568804 conditions, 102560 events. 65738/102560 cut-off events. For 1111410/1127659 co-relation queries the response was YES. Maximal size of possible extension queue 5029. Compared 894919 event pairs, 12476 based on Foata normal form. 6838/106164 useless extension candidates. Maximal degree in co-relation 568759. Up to 37663 conditions per place. [2023-08-31 02:12:32,696 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 229 selfloop transitions, 554 changer transitions 8/814 dead transitions. [2023-08-31 02:12:32,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 814 transitions, 16230 flow [2023-08-31 02:12:32,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 02:12:32,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 02:12:32,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1739 transitions. [2023-08-31 02:12:32,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515717674970344 [2023-08-31 02:12:32,698 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1739 transitions. [2023-08-31 02:12:32,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1739 transitions. [2023-08-31 02:12:32,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:12:32,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1739 transitions. [2023-08-31 02:12:32,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 144.91666666666666) internal successors, (1739), 12 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:12:32,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 281.0) internal successors, (3653), 13 states have internal predecessors, (3653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:12:32,704 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 281.0) internal successors, (3653), 13 states have internal predecessors, (3653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:12:32,704 INFO L175 Difference]: Start difference. First operand has 160 places, 604 transitions, 12381 flow. Second operand 12 states and 1739 transitions. [2023-08-31 02:12:32,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 814 transitions, 16230 flow [2023-08-31 02:12:42,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 814 transitions, 15762 flow, removed 11 selfloop flow, removed 8 redundant places. [2023-08-31 02:12:42,940 INFO L231 Difference]: Finished difference. Result has 167 places, 672 transitions, 14889 flow [2023-08-31 02:12:42,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=11941, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=481, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14889, PETRI_PLACES=167, PETRI_TRANSITIONS=672} [2023-08-31 02:12:42,941 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 109 predicate places. [2023-08-31 02:12:42,941 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 672 transitions, 14889 flow [2023-08-31 02:12:42,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 132.625) internal successors, (1061), 8 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:12:42,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:12:42,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:12:42,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-31 02:12:42,942 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-31 02:12:42,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:12:42,942 INFO L85 PathProgramCache]: Analyzing trace with hash 552963107, now seen corresponding path program 16 times [2023-08-31 02:12:42,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:12:42,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716633300] [2023-08-31 02:12:42,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:12:42,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:12:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:12:43,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:12:43,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:12:43,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716633300] [2023-08-31 02:12:43,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716633300] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:12:43,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:12:43,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 02:12:43,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011965279] [2023-08-31 02:12:43,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:12:43,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 02:12:43,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:12:43,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 02:12:43,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-31 02:12:43,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-08-31 02:12:43,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 672 transitions, 14889 flow. Second operand has 8 states, 8 states have (on average 135.5) internal successors, (1084), 8 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:12:43,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:12:43,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-08-31 02:12:43,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:12:51,469 INFO L130 PetriNetUnfolder]: 31302/52977 cut-off events. [2023-08-31 02:12:51,470 INFO L131 PetriNetUnfolder]: For 581636/599340 co-relation queries the response was YES. [2023-08-31 02:12:51,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295682 conditions, 52977 events. 31302/52977 cut-off events. For 581636/599340 co-relation queries the response was YES. Maximal size of possible extension queue 2641. Compared 477361 event pairs, 7055 based on Foata normal form. 7280/58417 useless extension candidates. Maximal degree in co-relation 295633. Up to 22433 conditions per place. [2023-08-31 02:12:52,013 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 215 selfloop transitions, 756 changer transitions 11/1004 dead transitions. [2023-08-31 02:12:52,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 1004 transitions, 22708 flow [2023-08-31 02:12:52,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 02:12:52,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 02:12:52,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1629 transitions. [2023-08-31 02:12:52,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5270139113555483 [2023-08-31 02:12:52,016 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1629 transitions. [2023-08-31 02:12:52,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1629 transitions. [2023-08-31 02:12:52,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:12:52,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1629 transitions. [2023-08-31 02:12:52,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 148.0909090909091) internal successors, (1629), 11 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:12:52,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 281.0) internal successors, (3372), 12 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:12:52,022 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 281.0) internal successors, (3372), 12 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:12:52,022 INFO L175 Difference]: Start difference. First operand has 167 places, 672 transitions, 14889 flow. Second operand 11 states and 1629 transitions. [2023-08-31 02:12:52,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 1004 transitions, 22708 flow [2023-08-31 02:12:55,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 1004 transitions, 21599 flow, removed 39 selfloop flow, removed 9 redundant places. [2023-08-31 02:12:55,672 INFO L231 Difference]: Finished difference. Result has 171 places, 874 transitions, 20912 flow [2023-08-31 02:12:55,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=12218, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=484, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=20912, PETRI_PLACES=171, PETRI_TRANSITIONS=874} [2023-08-31 02:12:55,673 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 113 predicate places. [2023-08-31 02:12:55,673 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 874 transitions, 20912 flow [2023-08-31 02:12:55,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.5) internal successors, (1084), 8 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:12:55,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:12:55,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:12:55,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-31 02:12:55,674 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-31 02:12:55,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:12:55,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1679870159, now seen corresponding path program 17 times [2023-08-31 02:12:55,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:12:55,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012977527] [2023-08-31 02:12:55,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:12:55,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:12:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:12:55,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:12:55,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:12:55,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012977527] [2023-08-31 02:12:55,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012977527] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:12:55,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:12:55,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 02:12:55,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748070487] [2023-08-31 02:12:55,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:12:55,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 02:12:55,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:12:55,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 02:12:55,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-31 02:12:55,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-08-31 02:12:55,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 874 transitions, 20912 flow. Second operand has 10 states, 10 states have (on average 134.6) internal successors, (1346), 10 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:12:55,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:12:55,985 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-08-31 02:12:55,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:13:06,890 INFO L130 PetriNetUnfolder]: 36872/62506 cut-off events. [2023-08-31 02:13:06,890 INFO L131 PetriNetUnfolder]: For 696767/714626 co-relation queries the response was YES. [2023-08-31 02:13:07,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347240 conditions, 62506 events. 36872/62506 cut-off events. For 696767/714626 co-relation queries the response was YES. Maximal size of possible extension queue 3099. Compared 577086 event pairs, 4123 based on Foata normal form. 4888/65616 useless extension candidates. Maximal degree in co-relation 347189. Up to 19141 conditions per place. [2023-08-31 02:13:07,792 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 200 selfloop transitions, 834 changer transitions 0/1056 dead transitions. [2023-08-31 02:13:07,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 1056 transitions, 24318 flow [2023-08-31 02:13:07,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 02:13:07,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 02:13:07,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1926 transitions. [2023-08-31 02:13:07,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5272378866684917 [2023-08-31 02:13:07,795 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1926 transitions. [2023-08-31 02:13:07,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1926 transitions. [2023-08-31 02:13:07,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:13:07,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1926 transitions. [2023-08-31 02:13:07,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 148.15384615384616) internal successors, (1926), 13 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:13:07,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 281.0) internal successors, (3934), 14 states have internal predecessors, (3934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:13:07,800 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 281.0) internal successors, (3934), 14 states have internal predecessors, (3934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:13:07,800 INFO L175 Difference]: Start difference. First operand has 171 places, 874 transitions, 20912 flow. Second operand 13 states and 1926 transitions. [2023-08-31 02:13:07,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 1056 transitions, 24318 flow [2023-08-31 02:13:12,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 1056 transitions, 24086 flow, removed 25 selfloop flow, removed 5 redundant places. [2023-08-31 02:13:12,229 INFO L231 Difference]: Finished difference. Result has 181 places, 917 transitions, 23968 flow [2023-08-31 02:13:12,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=20702, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=874, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=797, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=23968, PETRI_PLACES=181, PETRI_TRANSITIONS=917} [2023-08-31 02:13:12,230 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 123 predicate places. [2023-08-31 02:13:12,230 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 917 transitions, 23968 flow [2023-08-31 02:13:12,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 134.6) internal successors, (1346), 10 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:13:12,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:13:12,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:13:12,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-31 02:13:12,232 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-31 02:13:12,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:13:12,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1000282989, now seen corresponding path program 18 times [2023-08-31 02:13:12,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:13:12,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268830912] [2023-08-31 02:13:12,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:13:12,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:13:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:13:12,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:13:12,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:13:12,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268830912] [2023-08-31 02:13:12,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268830912] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:13:12,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:13:12,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 02:13:12,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242027783] [2023-08-31 02:13:12,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:13:12,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 02:13:12,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:13:12,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 02:13:12,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-31 02:13:12,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-08-31 02:13:12,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 917 transitions, 23968 flow. Second operand has 9 states, 9 states have (on average 135.0) internal successors, (1215), 9 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:13:12,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:13:12,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-08-31 02:13:12,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:13:23,116 INFO L130 PetriNetUnfolder]: 35824/61265 cut-off events. [2023-08-31 02:13:23,116 INFO L131 PetriNetUnfolder]: For 893737/914627 co-relation queries the response was YES. [2023-08-31 02:13:23,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377047 conditions, 61265 events. 35824/61265 cut-off events. For 893737/914627 co-relation queries the response was YES. Maximal size of possible extension queue 3111. Compared 570380 event pairs, 6390 based on Foata normal form. 6104/65725 useless extension candidates. Maximal degree in co-relation 376993. Up to 20507 conditions per place. [2023-08-31 02:13:24,091 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 214 selfloop transitions, 894 changer transitions 18/1148 dead transitions. [2023-08-31 02:13:24,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 1148 transitions, 29077 flow [2023-08-31 02:13:24,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-31 02:13:24,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-31 02:13:24,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2204 transitions. [2023-08-31 02:13:24,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228944246737841 [2023-08-31 02:13:24,093 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2204 transitions. [2023-08-31 02:13:24,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2204 transitions. [2023-08-31 02:13:24,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:13:24,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2204 transitions. [2023-08-31 02:13:24,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 146.93333333333334) internal successors, (2204), 15 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:13:24,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 281.0) internal successors, (4496), 16 states have internal predecessors, (4496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:13:24,104 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 281.0) internal successors, (4496), 16 states have internal predecessors, (4496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:13:24,104 INFO L175 Difference]: Start difference. First operand has 181 places, 917 transitions, 23968 flow. Second operand 15 states and 2204 transitions. [2023-08-31 02:13:24,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 1148 transitions, 29077 flow [2023-08-31 02:13:34,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 1148 transitions, 28071 flow, removed 146 selfloop flow, removed 9 redundant places. [2023-08-31 02:13:34,084 INFO L231 Difference]: Finished difference. Result has 189 places, 991 transitions, 26911 flow [2023-08-31 02:13:34,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=23009, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=914, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=804, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=26911, PETRI_PLACES=189, PETRI_TRANSITIONS=991} [2023-08-31 02:13:34,085 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 131 predicate places. [2023-08-31 02:13:34,085 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 991 transitions, 26911 flow [2023-08-31 02:13:34,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 135.0) internal successors, (1215), 9 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:13:34,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:13:34,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:13:34,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-31 02:13:34,087 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-31 02:13:34,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:13:34,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1781493359, now seen corresponding path program 19 times [2023-08-31 02:13:34,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:13:34,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468175983] [2023-08-31 02:13:34,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:13:34,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:13:34,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat