./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 BEFORE --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 BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 12:58:04,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 12:58:04,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 12:58:04,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 12:58:04,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 12:58:04,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 12:58:04,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 12:58:04,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 12:58:04,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 12:58:04,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 12:58:04,677 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 12:58:04,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 12:58:04,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 12:58:04,679 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 12:58:04,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 12:58:04,681 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 12:58:04,682 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 12:58:04,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 12:58:04,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 12:58:04,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 12:58:04,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 12:58:04,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 12:58:04,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 12:58:04,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 12:58:04,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 12:58:04,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 12:58:04,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 12:58:04,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 12:58:04,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 12:58:04,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 12:58:04,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 12:58:04,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 12:58:04,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 12:58:04,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 12:58:04,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 12:58:04,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 12:58:04,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 12:58:04,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 12:58:04,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 12:58:04,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 12:58:04,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 12:58:04,712 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 12:58:04,734 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 12:58:04,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 12:58:04,735 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 12:58:04,735 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 12:58:04,736 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 12:58:04,736 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 12:58:04,736 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 12:58:04,737 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 12:58:04,737 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 12:58:04,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 12:58:04,737 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 12:58:04,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 12:58:04,738 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 12:58:04,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 12:58:04,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 12:58:04,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 12:58:04,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 12:58:04,739 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 12:58:04,739 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 12:58:04,739 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 12:58:04,739 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 12:58:04,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 12:58:04,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 12:58:04,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 12:58:04,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 12:58:04,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 12:58:04,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 12:58:04,741 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 12:58:04,741 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 12:58:04,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 12:58:04,741 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 12:58:04,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 12:58:04,741 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 12:58:04,742 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 12:58:04,742 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 12:58:04,742 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 084d7ddce3c53222c6533ccae99969e854061e3b422eaf94457157515e3bd009 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 12:58:05,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 12:58:05,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 12:58:05,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 12:58:05,033 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 12:58:05,033 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 12:58:05,034 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-5.wvr.c [2023-09-01 12:58:06,257 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 12:58:06,509 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 12:58:06,510 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-5.wvr.c [2023-09-01 12:58:06,516 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e311f6ca6/09436f30e01e4c6d9d19f254cc44cf4f/FLAG48e5e57d3 [2023-09-01 12:58:06,537 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e311f6ca6/09436f30e01e4c6d9d19f254cc44cf4f [2023-09-01 12:58:06,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 12:58:06,540 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 12:58:06,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 12:58:06,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 12:58:06,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 12:58:06,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:58:06" (1/1) ... [2023-09-01 12:58:06,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c6d68ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:58:06, skipping insertion in model container [2023-09-01 12:58:06,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:58:06" (1/1) ... [2023-09-01 12:58:06,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 12:58:06,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 12:58:06,778 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] [2023-09-01 12:58:06,785 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 12:58:06,797 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 12:58:06,836 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] [2023-09-01 12:58:06,843 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 12:58:06,851 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 12:58:06,853 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 12:58:06,859 INFO L208 MainTranslator]: Completed translation [2023-09-01 12:58:06,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:58:06 WrapperNode [2023-09-01 12:58:06,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 12:58:06,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 12:58:06,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 12:58:06,861 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 12:58:06,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:58:06" (1/1) ... [2023-09-01 12:58:06,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:58:06" (1/1) ... [2023-09-01 12:58:06,922 INFO L138 Inliner]: procedures = 24, calls = 85, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 247 [2023-09-01 12:58:06,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 12:58:06,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 12:58:06,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 12:58:06,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 12:58:06,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:58:06" (1/1) ... [2023-09-01 12:58:06,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:58:06" (1/1) ... [2023-09-01 12:58:06,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:58:06" (1/1) ... [2023-09-01 12:58:06,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:58:06" (1/1) ... [2023-09-01 12:58:06,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:58:06" (1/1) ... [2023-09-01 12:58:06,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:58:06" (1/1) ... [2023-09-01 12:58:06,969 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:58:06" (1/1) ... [2023-09-01 12:58:06,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:58:06" (1/1) ... [2023-09-01 12:58:06,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 12:58:06,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 12:58:06,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 12:58:06,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 12:58:06,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:58:06" (1/1) ... [2023-09-01 12:58:06,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 12:58:06,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:58:07,010 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) [2023-09-01 12:58:07,031 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 [2023-09-01 12:58:07,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 12:58:07,054 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 12:58:07,055 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 12:58:07,055 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 12:58:07,055 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 12:58:07,055 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 12:58:07,055 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 12:58:07,056 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-09-01 12:58:07,056 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-09-01 12:58:07,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 12:58:07,056 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-09-01 12:58:07,056 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-09-01 12:58:07,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 12:58:07,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 12:58:07,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 12:58:07,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 12:58:07,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 12:58:07,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 12:58:07,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 12:58:07,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 12:58:07,059 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 12:58:07,157 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 12:58:07,159 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 12:58:07,479 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 12:58:07,578 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 12:58:07,580 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 12:58:07,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:58:07 BoogieIcfgContainer [2023-09-01 12:58:07,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 12:58:07,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 12:58:07,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 12:58:07,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 12:58:07,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:58:06" (1/3) ... [2023-09-01 12:58:07,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b9703af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:58:07, skipping insertion in model container [2023-09-01 12:58:07,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:58:06" (2/3) ... [2023-09-01 12:58:07,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b9703af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:58:07, skipping insertion in model container [2023-09-01 12:58:07,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:58:07" (3/3) ... [2023-09-01 12:58:07,595 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-5.wvr.c [2023-09-01 12:58:07,602 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 12:58:07,610 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 12:58:07,611 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 12:58:07,611 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 12:58:07,682 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 12:58:07,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 167 transitions, 374 flow [2023-09-01 12:58:07,787 INFO L130 PetriNetUnfolder]: 2/162 cut-off events. [2023-09-01 12:58:07,787 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-09-01 12:58:07,791 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. [2023-09-01 12:58:07,792 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 167 transitions, 374 flow [2023-09-01 12:58:07,796 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 148 transitions, 326 flow [2023-09-01 12:58:07,799 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 12:58:07,806 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 148 transitions, 326 flow [2023-09-01 12:58:07,808 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 148 transitions, 326 flow [2023-09-01 12:58:07,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 148 transitions, 326 flow [2023-09-01 12:58:07,851 INFO L130 PetriNetUnfolder]: 2/148 cut-off events. [2023-09-01 12:58:07,851 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-09-01 12:58:07,852 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. [2023-09-01 12:58:07,854 INFO L119 LiptonReduction]: Number of co-enabled transitions 2082 [2023-09-01 12:58:12,447 INFO L134 LiptonReduction]: Checked pairs total: 10775 [2023-09-01 12:58:12,447 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-09-01 12:58:12,460 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 12:58:12,466 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;@467ef991, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 12:58:12,466 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-09-01 12:58:12,475 INFO L130 PetriNetUnfolder]: 0/41 cut-off events. [2023-09-01 12:58:12,476 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-09-01 12:58:12,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:58:12,476 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] [2023-09-01 12:58:12,477 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)] === [2023-09-01 12:58:12,481 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:58:12,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1886582129, now seen corresponding path program 1 times [2023-09-01 12:58:12,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:58:12,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422136228] [2023-09-01 12:58:12,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:58:12,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:58:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:58:14,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:58:14,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:58:14,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422136228] [2023-09-01 12:58:14,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422136228] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:58:14,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:58:14,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 12:58:14,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987284892] [2023-09-01 12:58:14,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:58:14,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 12:58:14,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:58:14,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 12:58:14,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-09-01 12:58:14,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 281 [2023-09-01 12:58:14,513 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) [2023-09-01 12:58:14,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:58:14,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 281 [2023-09-01 12:58:14,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:58:19,673 INFO L130 PetriNetUnfolder]: 64349/83635 cut-off events. [2023-09-01 12:58:19,673 INFO L131 PetriNetUnfolder]: For 5019/5019 co-relation queries the response was YES. [2023-09-01 12:58:20,011 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. [2023-09-01 12:58:20,289 INFO L137 encePairwiseOnDemand]: 268/281 looper letters, 153 selfloop transitions, 26 changer transitions 15/194 dead transitions. [2023-09-01 12:58:20,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 194 transitions, 875 flow [2023-09-01 12:58:20,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:58:20,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:58:20,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1302 transitions. [2023-09-01 12:58:20,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148279952550415 [2023-09-01 12:58:20,314 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1302 transitions. [2023-09-01 12:58:20,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1302 transitions. [2023-09-01 12:58:20,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:58:20,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1302 transitions. [2023-09-01 12:58:20,328 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) [2023-09-01 12:58:20,338 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) [2023-09-01 12:58:20,340 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) [2023-09-01 12:58:20,341 INFO L175 Difference]: Start difference. First operand has 58 places, 42 transitions, 114 flow. Second operand 9 states and 1302 transitions. [2023-09-01 12:58:20,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 194 transitions, 875 flow [2023-09-01 12:58:20,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 194 transitions, 809 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-09-01 12:58:20,661 INFO L231 Difference]: Finished difference. Result has 60 places, 74 transitions, 273 flow [2023-09-01 12:58:20,664 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} [2023-09-01 12:58:20,670 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2023-09-01 12:58:20,670 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 74 transitions, 273 flow [2023-09-01 12:58:20,671 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) [2023-09-01 12:58:20,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:58:20,672 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] [2023-09-01 12:58:20,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 12:58:20,673 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)] === [2023-09-01 12:58:20,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:58:20,676 INFO L85 PathProgramCache]: Analyzing trace with hash -169135167, now seen corresponding path program 2 times [2023-09-01 12:58:20,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:58:20,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099659056] [2023-09-01 12:58:20,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:58:20,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:58:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:58:20,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:58:20,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:58:20,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099659056] [2023-09-01 12:58:20,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099659056] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:58:20,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:58:20,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 12:58:20,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810177060] [2023-09-01 12:58:20,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:58:20,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 12:58:20,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:58:20,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 12:58:20,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 12:58:21,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-09-01 12:58:21,015 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) [2023-09-01 12:58:21,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:58:21,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-09-01 12:58:21,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:58:23,445 INFO L130 PetriNetUnfolder]: 22462/32041 cut-off events. [2023-09-01 12:58:23,445 INFO L131 PetriNetUnfolder]: For 6920/7024 co-relation queries the response was YES. [2023-09-01 12:58:23,533 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. [2023-09-01 12:58:23,697 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 101 selfloop transitions, 25 changer transitions 0/158 dead transitions. [2023-09-01 12:58:23,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 158 transitions, 738 flow [2023-09-01 12:58:23,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 12:58:23,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 12:58:23,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1045 transitions. [2023-09-01 12:58:23,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5312658871377732 [2023-09-01 12:58:23,701 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1045 transitions. [2023-09-01 12:58:23,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1045 transitions. [2023-09-01 12:58:23,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:58:23,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1045 transitions. [2023-09-01 12:58:23,705 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) [2023-09-01 12:58:23,708 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) [2023-09-01 12:58:23,710 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) [2023-09-01 12:58:23,710 INFO L175 Difference]: Start difference. First operand has 60 places, 74 transitions, 273 flow. Second operand 7 states and 1045 transitions. [2023-09-01 12:58:23,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 158 transitions, 738 flow [2023-09-01 12:58:23,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 158 transitions, 731 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-09-01 12:58:23,903 INFO L231 Difference]: Finished difference. Result has 68 places, 92 transitions, 390 flow [2023-09-01 12:58:23,904 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} [2023-09-01 12:58:23,904 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2023-09-01 12:58:23,905 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 92 transitions, 390 flow [2023-09-01 12:58:23,905 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) [2023-09-01 12:58:23,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:58:23,906 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] [2023-09-01 12:58:23,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 12:58:23,907 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)] === [2023-09-01 12:58:23,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:58:23,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1209127043, now seen corresponding path program 3 times [2023-09-01 12:58:23,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:58:23,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61582439] [2023-09-01 12:58:23,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:58:23,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:58:23,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:58:24,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:58:24,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:58:24,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61582439] [2023-09-01 12:58:24,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61582439] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:58:24,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:58:24,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 12:58:24,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934585191] [2023-09-01 12:58:24,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:58:24,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 12:58:24,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:58:24,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 12:58:24,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 12:58:24,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-09-01 12:58:24,230 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) [2023-09-01 12:58:24,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:58:24,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-09-01 12:58:24,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:58:26,022 INFO L130 PetriNetUnfolder]: 19232/28041 cut-off events. [2023-09-01 12:58:26,023 INFO L131 PetriNetUnfolder]: For 17437/18411 co-relation queries the response was YES. [2023-09-01 12:58:26,108 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. [2023-09-01 12:58:26,233 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 97 selfloop transitions, 36 changer transitions 0/164 dead transitions. [2023-09-01 12:58:26,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 164 transitions, 886 flow [2023-09-01 12:58:26,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 12:58:26,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 12:58:26,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1039 transitions. [2023-09-01 12:58:26,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5282155566853076 [2023-09-01 12:58:26,237 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1039 transitions. [2023-09-01 12:58:26,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1039 transitions. [2023-09-01 12:58:26,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:58:26,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1039 transitions. [2023-09-01 12:58:26,240 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) [2023-09-01 12:58:26,243 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) [2023-09-01 12:58:26,245 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) [2023-09-01 12:58:26,245 INFO L175 Difference]: Start difference. First operand has 68 places, 92 transitions, 390 flow. Second operand 7 states and 1039 transitions. [2023-09-01 12:58:26,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 164 transitions, 886 flow [2023-09-01 12:58:26,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 164 transitions, 880 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 12:58:26,411 INFO L231 Difference]: Finished difference. Result has 75 places, 104 transitions, 534 flow [2023-09-01 12:58:26,411 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} [2023-09-01 12:58:26,412 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2023-09-01 12:58:26,416 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 104 transitions, 534 flow [2023-09-01 12:58:26,416 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) [2023-09-01 12:58:26,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:58:26,417 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] [2023-09-01 12:58:26,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 12:58:26,418 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)] === [2023-09-01 12:58:26,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:58:26,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1580156935, now seen corresponding path program 4 times [2023-09-01 12:58:26,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:58:26,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431097794] [2023-09-01 12:58:26,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:58:26,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:58:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:58:26,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:58:26,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:58:26,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431097794] [2023-09-01 12:58:26,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431097794] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:58:26,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:58:26,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 12:58:26,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189167759] [2023-09-01 12:58:26,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:58:26,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 12:58:26,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:58:26,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 12:58:26,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 12:58:26,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-09-01 12:58:26,686 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) [2023-09-01 12:58:26,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:58:26,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-09-01 12:58:26,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:58:31,644 INFO L130 PetriNetUnfolder]: 43502/65145 cut-off events. [2023-09-01 12:58:31,645 INFO L131 PetriNetUnfolder]: For 57077/57949 co-relation queries the response was YES. [2023-09-01 12:58:31,872 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. [2023-09-01 12:58:32,280 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 134 selfloop transitions, 85 changer transitions 0/250 dead transitions. [2023-09-01 12:58:32,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 250 transitions, 1560 flow [2023-09-01 12:58:32,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:58:32,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:58:32,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1347 transitions. [2023-09-01 12:58:32,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5326215895610913 [2023-09-01 12:58:32,285 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1347 transitions. [2023-09-01 12:58:32,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1347 transitions. [2023-09-01 12:58:32,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:58:32,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1347 transitions. [2023-09-01 12:58:32,289 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) [2023-09-01 12:58:32,292 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) [2023-09-01 12:58:32,293 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) [2023-09-01 12:58:32,293 INFO L175 Difference]: Start difference. First operand has 75 places, 104 transitions, 534 flow. Second operand 9 states and 1347 transitions. [2023-09-01 12:58:32,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 250 transitions, 1560 flow [2023-09-01 12:58:33,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 250 transitions, 1554 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 12:58:33,561 INFO L231 Difference]: Finished difference. Result has 86 places, 155 transitions, 1138 flow [2023-09-01 12:58:33,561 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} [2023-09-01 12:58:33,562 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 28 predicate places. [2023-09-01 12:58:33,562 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 155 transitions, 1138 flow [2023-09-01 12:58:33,562 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) [2023-09-01 12:58:33,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:58:33,563 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] [2023-09-01 12:58:33,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 12:58:33,563 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)] === [2023-09-01 12:58:33,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:58:33,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1901603651, now seen corresponding path program 5 times [2023-09-01 12:58:33,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:58:33,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255009478] [2023-09-01 12:58:33,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:58:33,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:58:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:58:33,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:58:33,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:58:33,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255009478] [2023-09-01 12:58:33,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255009478] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:58:33,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:58:33,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 12:58:33,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909236793] [2023-09-01 12:58:33,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:58:33,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 12:58:33,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:58:33,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 12:58:33,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-09-01 12:58:33,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-09-01 12:58:33,829 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) [2023-09-01 12:58:33,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:58:33,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-09-01 12:58:33,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:58:39,936 INFO L130 PetriNetUnfolder]: 53657/81911 cut-off events. [2023-09-01 12:58:39,936 INFO L131 PetriNetUnfolder]: For 163467/170473 co-relation queries the response was YES. [2023-09-01 12:58:40,251 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. [2023-09-01 12:58:40,743 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 145 selfloop transitions, 178 changer transitions 3/357 dead transitions. [2023-09-01 12:58:40,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 357 transitions, 2957 flow [2023-09-01 12:58:40,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 12:58:40,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 12:58:40,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1642 transitions. [2023-09-01 12:58:40,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5312196700097056 [2023-09-01 12:58:40,748 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1642 transitions. [2023-09-01 12:58:40,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1642 transitions. [2023-09-01 12:58:40,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:58:40,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1642 transitions. [2023-09-01 12:58:40,753 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) [2023-09-01 12:58:40,757 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) [2023-09-01 12:58:40,758 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) [2023-09-01 12:58:40,758 INFO L175 Difference]: Start difference. First operand has 86 places, 155 transitions, 1138 flow. Second operand 11 states and 1642 transitions. [2023-09-01 12:58:40,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 357 transitions, 2957 flow [2023-09-01 12:58:43,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 357 transitions, 2911 flow, removed 20 selfloop flow, removed 1 redundant places. [2023-09-01 12:58:43,112 INFO L231 Difference]: Finished difference. Result has 100 places, 250 transitions, 2543 flow [2023-09-01 12:58:43,112 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} [2023-09-01 12:58:43,113 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 42 predicate places. [2023-09-01 12:58:43,113 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 250 transitions, 2543 flow [2023-09-01 12:58:43,113 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) [2023-09-01 12:58:43,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:58:43,114 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] [2023-09-01 12:58:43,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 12:58:43,114 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)] === [2023-09-01 12:58:43,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:58:43,115 INFO L85 PathProgramCache]: Analyzing trace with hash 480139849, now seen corresponding path program 6 times [2023-09-01 12:58:43,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:58:43,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156842545] [2023-09-01 12:58:43,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:58:43,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:58:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:58:43,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:58:43,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:58:43,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156842545] [2023-09-01 12:58:43,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156842545] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:58:43,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:58:43,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 12:58:43,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706367679] [2023-09-01 12:58:43,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:58:43,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 12:58:43,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:58:43,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 12:58:43,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-09-01 12:58:43,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-09-01 12:58:43,447 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) [2023-09-01 12:58:43,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:58:43,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-09-01 12:58:43,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:58:50,933 INFO L130 PetriNetUnfolder]: 52963/80980 cut-off events. [2023-09-01 12:58:50,934 INFO L131 PetriNetUnfolder]: For 327024/341072 co-relation queries the response was YES. [2023-09-01 12:58:51,386 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. [2023-09-01 12:58:51,718 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 266 selfloop transitions, 184 changer transitions 16/495 dead transitions. [2023-09-01 12:58:51,718 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 495 transitions, 5235 flow [2023-09-01 12:58:51,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-09-01 12:58:51,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-09-01 12:58:51,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2778 transitions. [2023-09-01 12:58:51,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5203221577074358 [2023-09-01 12:58:51,725 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2778 transitions. [2023-09-01 12:58:51,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2778 transitions. [2023-09-01 12:58:51,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:58:51,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2778 transitions. [2023-09-01 12:58:51,732 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) [2023-09-01 12:58:51,738 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) [2023-09-01 12:58:51,740 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) [2023-09-01 12:58:51,740 INFO L175 Difference]: Start difference. First operand has 100 places, 250 transitions, 2543 flow. Second operand 19 states and 2778 transitions. [2023-09-01 12:58:51,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 495 transitions, 5235 flow [2023-09-01 12:58:54,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 495 transitions, 5102 flow, removed 61 selfloop flow, removed 2 redundant places. [2023-09-01 12:58:54,603 INFO L231 Difference]: Finished difference. Result has 125 places, 321 transitions, 3939 flow [2023-09-01 12:58:54,604 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} [2023-09-01 12:58:54,607 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 67 predicate places. [2023-09-01 12:58:54,607 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 321 transitions, 3939 flow [2023-09-01 12:58:54,608 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) [2023-09-01 12:58:54,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:58:54,608 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] [2023-09-01 12:58:54,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 12:58:54,608 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)] === [2023-09-01 12:58:54,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:58:54,609 INFO L85 PathProgramCache]: Analyzing trace with hash -72860955, now seen corresponding path program 7 times [2023-09-01 12:58:54,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:58:54,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636260642] [2023-09-01 12:58:54,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:58:54,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:58:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:58:54,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:58:54,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:58:54,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636260642] [2023-09-01 12:58:54,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636260642] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:58:54,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:58:54,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 12:58:54,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305225817] [2023-09-01 12:58:54,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:58:54,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 12:58:54,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:58:54,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 12:58:54,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 12:58:54,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 281 [2023-09-01 12:58:54,950 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) [2023-09-01 12:58:54,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:58:54,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 281 [2023-09-01 12:58:54,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:59:03,129 INFO L130 PetriNetUnfolder]: 52693/80659 cut-off events. [2023-09-01 12:59:03,129 INFO L131 PetriNetUnfolder]: For 470916/484287 co-relation queries the response was YES. [2023-09-01 12:59:03,672 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. [2023-09-01 12:59:04,271 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 200 selfloop transitions, 159 changer transitions 16/404 dead transitions. [2023-09-01 12:59:04,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 404 transitions, 5302 flow [2023-09-01 12:59:04,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 12:59:04,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 12:59:04,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1327 transitions. [2023-09-01 12:59:04,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5247133254250692 [2023-09-01 12:59:04,276 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1327 transitions. [2023-09-01 12:59:04,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1327 transitions. [2023-09-01 12:59:04,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:59:04,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1327 transitions. [2023-09-01 12:59:04,279 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) [2023-09-01 12:59:04,283 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) [2023-09-01 12:59:04,283 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) [2023-09-01 12:59:04,284 INFO L175 Difference]: Start difference. First operand has 125 places, 321 transitions, 3939 flow. Second operand 9 states and 1327 transitions. [2023-09-01 12:59:04,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 404 transitions, 5302 flow [2023-09-01 12:59:08,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 404 transitions, 5189 flow, removed 17 selfloop flow, removed 7 redundant places. [2023-09-01 12:59:08,735 INFO L231 Difference]: Finished difference. Result has 128 places, 335 transitions, 4563 flow [2023-09-01 12:59:08,735 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} [2023-09-01 12:59:08,736 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 70 predicate places. [2023-09-01 12:59:08,736 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 335 transitions, 4563 flow [2023-09-01 12:59:08,736 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) [2023-09-01 12:59:08,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:59:08,737 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] [2023-09-01 12:59:08,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 12:59:08,737 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)] === [2023-09-01 12:59:08,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:59:08,738 INFO L85 PathProgramCache]: Analyzing trace with hash -156230979, now seen corresponding path program 8 times [2023-09-01 12:59:08,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:59:08,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429224232] [2023-09-01 12:59:08,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:59:08,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:59:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:59:08,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:59:08,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:59:08,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429224232] [2023-09-01 12:59:08,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429224232] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:59:08,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:59:08,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 12:59:08,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075839570] [2023-09-01 12:59:08,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:59:08,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 12:59:08,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:59:08,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 12:59:08,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 12:59:08,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-09-01 12:59:08,939 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) [2023-09-01 12:59:08,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:59:08,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-09-01 12:59:08,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:59:16,538 INFO L130 PetriNetUnfolder]: 47585/73441 cut-off events. [2023-09-01 12:59:16,538 INFO L131 PetriNetUnfolder]: For 433084/441886 co-relation queries the response was YES. [2023-09-01 12:59:17,011 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. [2023-09-01 12:59:17,319 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 178 selfloop transitions, 151 changer transitions 20/377 dead transitions. [2023-09-01 12:59:17,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 377 transitions, 5533 flow [2023-09-01 12:59:17,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 12:59:17,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 12:59:17,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1018 transitions. [2023-09-01 12:59:17,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175394001016776 [2023-09-01 12:59:17,322 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1018 transitions. [2023-09-01 12:59:17,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1018 transitions. [2023-09-01 12:59:17,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:59:17,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1018 transitions. [2023-09-01 12:59:17,325 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) [2023-09-01 12:59:17,327 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) [2023-09-01 12:59:17,328 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) [2023-09-01 12:59:17,328 INFO L175 Difference]: Start difference. First operand has 128 places, 335 transitions, 4563 flow. Second operand 7 states and 1018 transitions. [2023-09-01 12:59:17,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 377 transitions, 5533 flow [2023-09-01 12:59:19,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 377 transitions, 5353 flow, removed 8 selfloop flow, removed 7 redundant places. [2023-09-01 12:59:19,455 INFO L231 Difference]: Finished difference. Result has 126 places, 324 transitions, 4751 flow [2023-09-01 12:59:19,455 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} [2023-09-01 12:59:19,456 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 68 predicate places. [2023-09-01 12:59:19,456 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 324 transitions, 4751 flow [2023-09-01 12:59:19,457 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) [2023-09-01 12:59:19,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:59:19,457 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] [2023-09-01 12:59:19,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 12:59:19,457 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)] === [2023-09-01 12:59:19,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:59:19,458 INFO L85 PathProgramCache]: Analyzing trace with hash -977038993, now seen corresponding path program 9 times [2023-09-01 12:59:19,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:59:19,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700506230] [2023-09-01 12:59:19,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:59:19,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:59:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:59:19,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:59:19,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:59:19,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700506230] [2023-09-01 12:59:19,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700506230] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:59:19,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:59:19,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 12:59:19,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372279579] [2023-09-01 12:59:19,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:59:19,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 12:59:19,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:59:19,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 12:59:19,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 12:59:19,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-09-01 12:59:19,719 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) [2023-09-01 12:59:19,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:59:19,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-09-01 12:59:19,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:59:27,212 INFO L130 PetriNetUnfolder]: 45993/71560 cut-off events. [2023-09-01 12:59:27,212 INFO L131 PetriNetUnfolder]: For 392738/402925 co-relation queries the response was YES. [2023-09-01 12:59:28,005 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. [2023-09-01 12:59:28,297 INFO L137 encePairwiseOnDemand]: 273/281 looper letters, 295 selfloop transitions, 50 changer transitions 0/372 dead transitions. [2023-09-01 12:59:28,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 372 transitions, 5883 flow [2023-09-01 12:59:28,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 12:59:28,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 12:59:28,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 728 transitions. [2023-09-01 12:59:28,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5181494661921708 [2023-09-01 12:59:28,299 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 728 transitions. [2023-09-01 12:59:28,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 728 transitions. [2023-09-01 12:59:28,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:59:28,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 728 transitions. [2023-09-01 12:59:28,301 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) [2023-09-01 12:59:28,303 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) [2023-09-01 12:59:28,303 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) [2023-09-01 12:59:28,304 INFO L175 Difference]: Start difference. First operand has 126 places, 324 transitions, 4751 flow. Second operand 5 states and 728 transitions. [2023-09-01 12:59:28,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 372 transitions, 5883 flow [2023-09-01 12:59:30,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 372 transitions, 5655 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-09-01 12:59:30,813 INFO L231 Difference]: Finished difference. Result has 113 places, 332 transitions, 4836 flow [2023-09-01 12:59:30,814 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} [2023-09-01 12:59:30,814 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 55 predicate places. [2023-09-01 12:59:30,814 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 332 transitions, 4836 flow [2023-09-01 12:59:30,815 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) [2023-09-01 12:59:30,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:59:30,815 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] [2023-09-01 12:59:30,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 12:59:30,815 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)] === [2023-09-01 12:59:30,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:59:30,815 INFO L85 PathProgramCache]: Analyzing trace with hash -444821677, now seen corresponding path program 10 times [2023-09-01 12:59:30,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:59:30,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187657311] [2023-09-01 12:59:30,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:59:30,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:59:30,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:59:31,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:59:31,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:59:31,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187657311] [2023-09-01 12:59:31,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187657311] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:59:31,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:59:31,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 12:59:31,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589092673] [2023-09-01 12:59:31,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:59:31,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 12:59:31,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:59:31,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 12:59:31,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-09-01 12:59:31,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-09-01 12:59:31,075 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) [2023-09-01 12:59:31,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:59:31,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-09-01 12:59:31,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:59:38,379 INFO L130 PetriNetUnfolder]: 45908/71973 cut-off events. [2023-09-01 12:59:38,379 INFO L131 PetriNetUnfolder]: For 355428/365764 co-relation queries the response was YES. [2023-09-01 12:59:38,830 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. [2023-09-01 12:59:39,115 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 231 selfloop transitions, 238 changer transitions 0/496 dead transitions. [2023-09-01 12:59:39,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 496 transitions, 7138 flow [2023-09-01 12:59:39,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 12:59:39,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 12:59:39,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1605 transitions. [2023-09-01 12:59:39,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192494338401812 [2023-09-01 12:59:39,118 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1605 transitions. [2023-09-01 12:59:39,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1605 transitions. [2023-09-01 12:59:39,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:59:39,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1605 transitions. [2023-09-01 12:59:39,121 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) [2023-09-01 12:59:39,124 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) [2023-09-01 12:59:39,125 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) [2023-09-01 12:59:39,125 INFO L175 Difference]: Start difference. First operand has 113 places, 332 transitions, 4836 flow. Second operand 11 states and 1605 transitions. [2023-09-01 12:59:39,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 496 transitions, 7138 flow [2023-09-01 12:59:40,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 496 transitions, 7088 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 12:59:40,673 INFO L231 Difference]: Finished difference. Result has 123 places, 386 transitions, 6192 flow [2023-09-01 12:59:40,674 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} [2023-09-01 12:59:40,675 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 65 predicate places. [2023-09-01 12:59:40,675 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 386 transitions, 6192 flow [2023-09-01 12:59:40,676 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) [2023-09-01 12:59:40,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:59:40,676 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] [2023-09-01 12:59:40,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 12:59:40,676 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)] === [2023-09-01 12:59:40,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:59:40,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1085046347, now seen corresponding path program 11 times [2023-09-01 12:59:40,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:59:40,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836848127] [2023-09-01 12:59:40,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:59:40,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:59:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:59:40,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:59:40,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:59:40,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836848127] [2023-09-01 12:59:40,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836848127] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:59:40,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:59:40,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 12:59:40,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069884134] [2023-09-01 12:59:40,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:59:40,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 12:59:40,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:59:40,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 12:59:40,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-09-01 12:59:40,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-09-01 12:59:40,946 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) [2023-09-01 12:59:40,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:59:40,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-09-01 12:59:40,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:59:48,850 INFO L130 PetriNetUnfolder]: 46704/73161 cut-off events. [2023-09-01 12:59:48,850 INFO L131 PetriNetUnfolder]: For 460825/474473 co-relation queries the response was YES. [2023-09-01 12:59:49,359 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. [2023-09-01 12:59:49,661 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 232 selfloop transitions, 250 changer transitions 0/509 dead transitions. [2023-09-01 12:59:49,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 509 transitions, 8028 flow [2023-09-01 12:59:49,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 12:59:49,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 12:59:49,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1611 transitions. [2023-09-01 12:59:49,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.521190553219023 [2023-09-01 12:59:49,664 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1611 transitions. [2023-09-01 12:59:49,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1611 transitions. [2023-09-01 12:59:49,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:59:49,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1611 transitions. [2023-09-01 12:59:49,668 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) [2023-09-01 12:59:49,670 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) [2023-09-01 12:59:49,670 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) [2023-09-01 12:59:49,670 INFO L175 Difference]: Start difference. First operand has 123 places, 386 transitions, 6192 flow. Second operand 11 states and 1611 transitions. [2023-09-01 12:59:49,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 509 transitions, 8028 flow [2023-09-01 12:59:51,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 509 transitions, 7694 flow, removed 17 selfloop flow, removed 5 redundant places. [2023-09-01 12:59:51,613 INFO L231 Difference]: Finished difference. Result has 130 places, 405 transitions, 6867 flow [2023-09-01 12:59:51,614 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} [2023-09-01 12:59:51,614 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 72 predicate places. [2023-09-01 12:59:51,614 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 405 transitions, 6867 flow [2023-09-01 12:59:51,615 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) [2023-09-01 12:59:51,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:59:51,615 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] [2023-09-01 12:59:51,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 12:59:51,615 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)] === [2023-09-01 12:59:51,615 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:59:51,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1710255359, now seen corresponding path program 12 times [2023-09-01 12:59:51,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:59:51,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722761347] [2023-09-01 12:59:51,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:59:51,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:59:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:59:51,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:59:51,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:59:51,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722761347] [2023-09-01 12:59:51,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722761347] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:59:51,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:59:51,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 12:59:51,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485304187] [2023-09-01 12:59:51,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:59:51,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 12:59:51,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:59:51,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 12:59:51,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 12:59:51,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-09-01 12:59:51,839 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) [2023-09-01 12:59:51,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:59:51,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-09-01 12:59:51,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:00:00,548 INFO L130 PetriNetUnfolder]: 47161/74505 cut-off events. [2023-09-01 13:00:00,549 INFO L131 PetriNetUnfolder]: For 530125/551656 co-relation queries the response was YES. [2023-09-01 13:00:01,038 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. [2023-09-01 13:00:01,348 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 193 selfloop transitions, 327 changer transitions 6/553 dead transitions. [2023-09-01 13:00:01,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 553 transitions, 9176 flow [2023-09-01 13:00:01,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 13:00:01,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 13:00:01,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1340 transitions. [2023-09-01 13:00:01,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5298536971134836 [2023-09-01 13:00:01,350 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1340 transitions. [2023-09-01 13:00:01,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1340 transitions. [2023-09-01 13:00:01,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:00:01,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1340 transitions. [2023-09-01 13:00:01,352 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) [2023-09-01 13:00:01,354 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) [2023-09-01 13:00:01,354 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) [2023-09-01 13:00:01,354 INFO L175 Difference]: Start difference. First operand has 130 places, 405 transitions, 6867 flow. Second operand 9 states and 1340 transitions. [2023-09-01 13:00:01,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 553 transitions, 9176 flow [2023-09-01 13:00:04,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 553 transitions, 8967 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-09-01 13:00:04,074 INFO L231 Difference]: Finished difference. Result has 135 places, 445 transitions, 8175 flow [2023-09-01 13:00:04,074 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} [2023-09-01 13:00:04,075 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 77 predicate places. [2023-09-01 13:00:04,075 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 445 transitions, 8175 flow [2023-09-01 13:00:04,075 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) [2023-09-01 13:00:04,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:00:04,075 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] [2023-09-01 13:00:04,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 13:00:04,076 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)] === [2023-09-01 13:00:04,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:00:04,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1006455521, now seen corresponding path program 13 times [2023-09-01 13:00:04,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:00:04,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629351371] [2023-09-01 13:00:04,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:00:04,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:00:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:00:04,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:00:04,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:00:04,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629351371] [2023-09-01 13:00:04,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629351371] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:00:04,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:00:04,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 13:00:04,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048178051] [2023-09-01 13:00:04,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:00:04,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 13:00:04,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:00:04,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 13:00:04,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-09-01 13:00:04,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-09-01 13:00:04,394 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) [2023-09-01 13:00:04,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:00:04,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-09-01 13:00:04,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:00:15,324 INFO L130 PetriNetUnfolder]: 55494/88480 cut-off events. [2023-09-01 13:00:15,324 INFO L131 PetriNetUnfolder]: For 824747/847499 co-relation queries the response was YES. [2023-09-01 13:00:15,927 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. [2023-09-01 13:00:16,307 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 342 selfloop transitions, 316 changer transitions 1/686 dead transitions. [2023-09-01 13:00:16,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 686 transitions, 12055 flow [2023-09-01 13:00:16,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-09-01 13:00:16,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-09-01 13:00:16,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2623 transitions. [2023-09-01 13:00:16,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518584420719652 [2023-09-01 13:00:16,310 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2623 transitions. [2023-09-01 13:00:16,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2623 transitions. [2023-09-01 13:00:16,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:00:16,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2623 transitions. [2023-09-01 13:00:16,314 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) [2023-09-01 13:00:16,317 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) [2023-09-01 13:00:16,318 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) [2023-09-01 13:00:16,318 INFO L175 Difference]: Start difference. First operand has 135 places, 445 transitions, 8175 flow. Second operand 18 states and 2623 transitions. [2023-09-01 13:00:16,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 686 transitions, 12055 flow [2023-09-01 13:00:19,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 686 transitions, 11573 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 13:00:19,944 INFO L231 Difference]: Finished difference. Result has 153 places, 542 transitions, 10556 flow [2023-09-01 13:00:19,944 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} [2023-09-01 13:00:19,945 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 95 predicate places. [2023-09-01 13:00:19,945 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 542 transitions, 10556 flow [2023-09-01 13:00:19,945 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) [2023-09-01 13:00:19,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:00:19,945 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] [2023-09-01 13:00:19,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 13:00:19,946 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)] === [2023-09-01 13:00:19,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:00:19,946 INFO L85 PathProgramCache]: Analyzing trace with hash -27895093, now seen corresponding path program 14 times [2023-09-01 13:00:19,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:00:19,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951848959] [2023-09-01 13:00:19,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:00:19,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:00:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:00:20,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:00:20,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:00:20,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951848959] [2023-09-01 13:00:20,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951848959] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:00:20,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:00:20,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 13:00:20,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177669347] [2023-09-01 13:00:20,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:00:20,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 13:00:20,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:00:20,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 13:00:20,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-09-01 13:00:20,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-09-01 13:00:20,356 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) [2023-09-01 13:00:20,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:00:20,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-09-01 13:00:20,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:00:32,700 INFO L130 PetriNetUnfolder]: 55468/88956 cut-off events. [2023-09-01 13:00:32,700 INFO L131 PetriNetUnfolder]: For 1006395/1028238 co-relation queries the response was YES. [2023-09-01 13:00:33,717 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. [2023-09-01 13:00:34,116 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 454 selfloop transitions, 226 changer transitions 11/718 dead transitions. [2023-09-01 13:00:34,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 718 transitions, 14442 flow [2023-09-01 13:00:34,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 13:00:34,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 13:00:34,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1745 transitions. [2023-09-01 13:00:34,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.517497034400949 [2023-09-01 13:00:34,118 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1745 transitions. [2023-09-01 13:00:34,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1745 transitions. [2023-09-01 13:00:34,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:00:34,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1745 transitions. [2023-09-01 13:00:34,121 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) [2023-09-01 13:00:34,124 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) [2023-09-01 13:00:34,124 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) [2023-09-01 13:00:34,125 INFO L175 Difference]: Start difference. First operand has 153 places, 542 transitions, 10556 flow. Second operand 12 states and 1745 transitions. [2023-09-01 13:00:34,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 718 transitions, 14442 flow [2023-09-01 13:00:40,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 718 transitions, 14095 flow, removed 61 selfloop flow, removed 5 redundant places. [2023-09-01 13:00:40,338 INFO L231 Difference]: Finished difference. Result has 160 places, 604 transitions, 12381 flow [2023-09-01 13:00:40,338 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} [2023-09-01 13:00:40,339 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 102 predicate places. [2023-09-01 13:00:40,339 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 604 transitions, 12381 flow [2023-09-01 13:00:40,339 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) [2023-09-01 13:00:40,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:00:40,340 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] [2023-09-01 13:00:40,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 13:00:40,340 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)] === [2023-09-01 13:00:40,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:00:40,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1533231369, now seen corresponding path program 15 times [2023-09-01 13:00:40,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:00:40,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995420858] [2023-09-01 13:00:40,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:00:40,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:00:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:00:40,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:00:40,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:00:40,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995420858] [2023-09-01 13:00:40,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995420858] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:00:40,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:00:40,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 13:00:40,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390577680] [2023-09-01 13:00:40,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:00:40,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 13:00:40,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:00:40,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 13:00:40,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-09-01 13:00:40,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 281 [2023-09-01 13:00:40,647 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) [2023-09-01 13:00:40,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:00:40,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 281 [2023-09-01 13:00:40,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:00:55,473 INFO L130 PetriNetUnfolder]: 65738/102560 cut-off events. [2023-09-01 13:00:55,473 INFO L131 PetriNetUnfolder]: For 1111410/1127659 co-relation queries the response was YES. [2023-09-01 13:00:56,287 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. [2023-09-01 13:00:56,977 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 229 selfloop transitions, 554 changer transitions 8/814 dead transitions. [2023-09-01 13:00:56,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 814 transitions, 16230 flow [2023-09-01 13:00:56,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 13:00:56,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 13:00:56,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1739 transitions. [2023-09-01 13:00:56,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515717674970344 [2023-09-01 13:00:56,979 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1739 transitions. [2023-09-01 13:00:56,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1739 transitions. [2023-09-01 13:00:56,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:00:56,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1739 transitions. [2023-09-01 13:00:56,981 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) [2023-09-01 13:00:56,983 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) [2023-09-01 13:00:56,984 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) [2023-09-01 13:00:56,984 INFO L175 Difference]: Start difference. First operand has 160 places, 604 transitions, 12381 flow. Second operand 12 states and 1739 transitions. [2023-09-01 13:00:56,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 814 transitions, 16230 flow [2023-09-01 13:01:08,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 814 transitions, 15762 flow, removed 11 selfloop flow, removed 8 redundant places. [2023-09-01 13:01:08,379 INFO L231 Difference]: Finished difference. Result has 167 places, 672 transitions, 14889 flow [2023-09-01 13:01:08,380 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} [2023-09-01 13:01:08,380 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 109 predicate places. [2023-09-01 13:01:08,380 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 672 transitions, 14889 flow [2023-09-01 13:01:08,381 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) [2023-09-01 13:01:08,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:01:08,381 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] [2023-09-01 13:01:08,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 13:01:08,381 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)] === [2023-09-01 13:01:08,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:01:08,382 INFO L85 PathProgramCache]: Analyzing trace with hash 552963107, now seen corresponding path program 16 times [2023-09-01 13:01:08,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:01:08,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594458233] [2023-09-01 13:01:08,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:01:08,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:01:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:01:08,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:01:08,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:01:08,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594458233] [2023-09-01 13:01:08,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594458233] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:01:08,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:01:08,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 13:01:08,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075715588] [2023-09-01 13:01:08,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:01:08,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 13:01:08,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:01:08,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 13:01:08,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-09-01 13:01:08,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-09-01 13:01:08,590 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) [2023-09-01 13:01:08,590 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:01:08,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-09-01 13:01:08,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:01:16,885 INFO L130 PetriNetUnfolder]: 31302/52977 cut-off events. [2023-09-01 13:01:16,885 INFO L131 PetriNetUnfolder]: For 581636/599340 co-relation queries the response was YES. [2023-09-01 13:01:17,332 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. [2023-09-01 13:01:17,541 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 215 selfloop transitions, 756 changer transitions 11/1004 dead transitions. [2023-09-01 13:01:17,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 1004 transitions, 22708 flow [2023-09-01 13:01:17,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 13:01:17,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 13:01:17,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1629 transitions. [2023-09-01 13:01:17,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5270139113555483 [2023-09-01 13:01:17,543 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1629 transitions. [2023-09-01 13:01:17,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1629 transitions. [2023-09-01 13:01:17,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:01:17,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1629 transitions. [2023-09-01 13:01:17,546 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) [2023-09-01 13:01:17,549 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) [2023-09-01 13:01:17,549 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) [2023-09-01 13:01:17,549 INFO L175 Difference]: Start difference. First operand has 167 places, 672 transitions, 14889 flow. Second operand 11 states and 1629 transitions. [2023-09-01 13:01:17,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 1004 transitions, 22708 flow [2023-09-01 13:01:21,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 1004 transitions, 21599 flow, removed 39 selfloop flow, removed 9 redundant places. [2023-09-01 13:01:21,897 INFO L231 Difference]: Finished difference. Result has 171 places, 874 transitions, 20912 flow [2023-09-01 13:01:21,898 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} [2023-09-01 13:01:21,898 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 113 predicate places. [2023-09-01 13:01:21,898 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 874 transitions, 20912 flow [2023-09-01 13:01:21,899 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) [2023-09-01 13:01:21,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:01:21,899 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] [2023-09-01 13:01:21,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-09-01 13:01:21,899 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)] === [2023-09-01 13:01:21,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:01:21,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1679870159, now seen corresponding path program 17 times [2023-09-01 13:01:21,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:01:21,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757546696] [2023-09-01 13:01:21,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:01:21,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:01:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:01:22,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:01:22,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:01:22,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757546696] [2023-09-01 13:01:22,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757546696] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:01:22,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:01:22,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 13:01:22,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989584216] [2023-09-01 13:01:22,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:01:22,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 13:01:22,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:01:22,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 13:01:22,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-09-01 13:01:22,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-09-01 13:01:22,190 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) [2023-09-01 13:01:22,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:01:22,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-09-01 13:01:22,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:01:32,911 INFO L130 PetriNetUnfolder]: 36872/62506 cut-off events. [2023-09-01 13:01:32,911 INFO L131 PetriNetUnfolder]: For 696767/714626 co-relation queries the response was YES. [2023-09-01 13:01:33,430 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. [2023-09-01 13:01:33,668 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 200 selfloop transitions, 834 changer transitions 0/1056 dead transitions. [2023-09-01 13:01:33,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 1056 transitions, 24318 flow [2023-09-01 13:01:33,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 13:01:33,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 13:01:33,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1926 transitions. [2023-09-01 13:01:33,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5272378866684917 [2023-09-01 13:01:33,670 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1926 transitions. [2023-09-01 13:01:33,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1926 transitions. [2023-09-01 13:01:33,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:01:33,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1926 transitions. [2023-09-01 13:01:33,672 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) [2023-09-01 13:01:33,674 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) [2023-09-01 13:01:33,674 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) [2023-09-01 13:01:33,674 INFO L175 Difference]: Start difference. First operand has 171 places, 874 transitions, 20912 flow. Second operand 13 states and 1926 transitions. [2023-09-01 13:01:33,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 1056 transitions, 24318 flow [2023-09-01 13:01:38,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 1056 transitions, 24086 flow, removed 25 selfloop flow, removed 5 redundant places. [2023-09-01 13:01:38,975 INFO L231 Difference]: Finished difference. Result has 181 places, 917 transitions, 23968 flow [2023-09-01 13:01:38,976 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} [2023-09-01 13:01:38,977 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 123 predicate places. [2023-09-01 13:01:38,977 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 917 transitions, 23968 flow [2023-09-01 13:01:38,977 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) [2023-09-01 13:01:38,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:01:38,978 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] [2023-09-01 13:01:38,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-09-01 13:01:38,978 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)] === [2023-09-01 13:01:38,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:01:38,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1000282989, now seen corresponding path program 18 times [2023-09-01 13:01:38,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:01:38,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419338253] [2023-09-01 13:01:38,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:01:38,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:01:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:01:39,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:01:39,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:01:39,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419338253] [2023-09-01 13:01:39,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419338253] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:01:39,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:01:39,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 13:01:39,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812466839] [2023-09-01 13:01:39,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:01:39,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 13:01:39,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:01:39,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 13:01:39,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-09-01 13:01:39,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-09-01 13:01:39,210 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) [2023-09-01 13:01:39,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:01:39,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-09-01 13:01:39,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:01:51,056 INFO L130 PetriNetUnfolder]: 35824/61265 cut-off events. [2023-09-01 13:01:51,057 INFO L131 PetriNetUnfolder]: For 893737/914627 co-relation queries the response was YES. [2023-09-01 13:01:51,608 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. [2023-09-01 13:01:52,094 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 214 selfloop transitions, 894 changer transitions 18/1148 dead transitions. [2023-09-01 13:01:52,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 1148 transitions, 29077 flow [2023-09-01 13:01:52,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-09-01 13:01:52,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-09-01 13:01:52,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2204 transitions. [2023-09-01 13:01:52,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228944246737841 [2023-09-01 13:01:52,096 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2204 transitions. [2023-09-01 13:01:52,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2204 transitions. [2023-09-01 13:01:52,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:01:52,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2204 transitions. [2023-09-01 13:01:52,100 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) [2023-09-01 13:01:52,103 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) [2023-09-01 13:01:52,103 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) [2023-09-01 13:01:52,103 INFO L175 Difference]: Start difference. First operand has 181 places, 917 transitions, 23968 flow. Second operand 15 states and 2204 transitions. [2023-09-01 13:01:52,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 1148 transitions, 29077 flow [2023-09-01 13:02:01,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 1148 transitions, 28071 flow, removed 146 selfloop flow, removed 9 redundant places. [2023-09-01 13:02:01,078 INFO L231 Difference]: Finished difference. Result has 189 places, 991 transitions, 26911 flow [2023-09-01 13:02:01,079 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} [2023-09-01 13:02:01,079 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 131 predicate places. [2023-09-01 13:02:01,079 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 991 transitions, 26911 flow [2023-09-01 13:02:01,080 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) [2023-09-01 13:02:01,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:02:01,080 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] [2023-09-01 13:02:01,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-09-01 13:02:01,080 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)] === [2023-09-01 13:02:01,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:02:01,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1781493359, now seen corresponding path program 19 times [2023-09-01 13:02:01,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:02:01,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882494751] [2023-09-01 13:02:01,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:02:01,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:02:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:02:01,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:02:01,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:02:01,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882494751] [2023-09-01 13:02:01,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882494751] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:02:01,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:02:01,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 13:02:01,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345521267] [2023-09-01 13:02:01,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:02:01,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 13:02:01,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:02:01,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 13:02:01,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-09-01 13:02:01,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-09-01 13:02:01,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 991 transitions, 26911 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) [2023-09-01 13:02:01,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:02:01,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-09-01 13:02:01,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:02:13,329 INFO L130 PetriNetUnfolder]: 35326/60839 cut-off events. [2023-09-01 13:02:13,329 INFO L131 PetriNetUnfolder]: For 962143/979451 co-relation queries the response was YES. [2023-09-01 13:02:13,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377521 conditions, 60839 events. 35326/60839 cut-off events. For 962143/979451 co-relation queries the response was YES. Maximal size of possible extension queue 3081. Compared 572649 event pairs, 3828 based on Foata normal form. 4606/63785 useless extension candidates. Maximal degree in co-relation 377467. Up to 18636 conditions per place. [2023-09-01 13:02:14,091 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 181 selfloop transitions, 906 changer transitions 5/1114 dead transitions. [2023-09-01 13:02:14,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 1114 transitions, 29934 flow [2023-09-01 13:02:14,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 13:02:14,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 13:02:14,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1496 transitions. [2023-09-01 13:02:14,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5323843416370106 [2023-09-01 13:02:14,093 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1496 transitions. [2023-09-01 13:02:14,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1496 transitions. [2023-09-01 13:02:14,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:02:14,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1496 transitions. [2023-09-01 13:02:14,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 149.6) internal successors, (1496), 10 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:02:14,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 281.0) internal successors, (3091), 11 states have internal predecessors, (3091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:02:14,097 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 281.0) internal successors, (3091), 11 states have internal predecessors, (3091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:02:14,097 INFO L175 Difference]: Start difference. First operand has 189 places, 991 transitions, 26911 flow. Second operand 10 states and 1496 transitions. [2023-09-01 13:02:14,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 1114 transitions, 29934 flow [2023-09-01 13:02:23,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 1114 transitions, 28741 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-09-01 13:02:23,092 INFO L231 Difference]: Finished difference. Result has 192 places, 998 transitions, 28271 flow [2023-09-01 13:02:23,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=25722, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=991, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=894, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=28271, PETRI_PLACES=192, PETRI_TRANSITIONS=998} [2023-09-01 13:02:23,094 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 134 predicate places. [2023-09-01 13:02:23,094 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 998 transitions, 28271 flow [2023-09-01 13:02:23,094 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) [2023-09-01 13:02:23,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:02:23,095 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] [2023-09-01 13:02:23,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-09-01 13:02:23,095 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-09-01 13:02:23,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:02:23,095 INFO L85 PathProgramCache]: Analyzing trace with hash -25389585, now seen corresponding path program 20 times [2023-09-01 13:02:23,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:02:23,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661148613] [2023-09-01 13:02:23,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:02:23,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:02:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:02:23,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:02:23,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:02:23,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661148613] [2023-09-01 13:02:23,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661148613] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:02:23,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:02:23,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 13:02:23,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516459204] [2023-09-01 13:02:23,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:02:23,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 13:02:23,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:02:23,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 13:02:23,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-09-01 13:02:23,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 281 [2023-09-01 13:02:23,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 998 transitions, 28271 flow. Second operand has 9 states, 9 states have (on average 137.0) internal successors, (1233), 9 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:02:23,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:02:23,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 281 [2023-09-01 13:02:23,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:02:36,420 INFO L130 PetriNetUnfolder]: 36546/63352 cut-off events. [2023-09-01 13:02:36,420 INFO L131 PetriNetUnfolder]: For 1067144/1083440 co-relation queries the response was YES. [2023-09-01 13:02:37,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411276 conditions, 63352 events. 36546/63352 cut-off events. For 1067144/1083440 co-relation queries the response was YES. Maximal size of possible extension queue 3072. Compared 600077 event pairs, 7552 based on Foata normal form. 2528/64178 useless extension candidates. Maximal degree in co-relation 411220. Up to 24802 conditions per place. [2023-09-01 13:02:37,514 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 257 selfloop transitions, 882 changer transitions 0/1161 dead transitions. [2023-09-01 13:02:37,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 1161 transitions, 32244 flow [2023-09-01 13:02:37,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 13:02:37,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 13:02:37,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1662 transitions. [2023-09-01 13:02:37,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5376900679391783 [2023-09-01 13:02:37,516 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1662 transitions. [2023-09-01 13:02:37,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1662 transitions. [2023-09-01 13:02:37,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:02:37,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1662 transitions. [2023-09-01 13:02:37,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 151.0909090909091) internal successors, (1662), 11 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:02:37,519 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) [2023-09-01 13:02:37,520 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) [2023-09-01 13:02:37,520 INFO L175 Difference]: Start difference. First operand has 192 places, 998 transitions, 28271 flow. Second operand 11 states and 1662 transitions. [2023-09-01 13:02:37,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 1161 transitions, 32244 flow [2023-09-01 13:02:47,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 1161 transitions, 30711 flow, removed 18 selfloop flow, removed 9 redundant places. [2023-09-01 13:02:47,565 INFO L231 Difference]: Finished difference. Result has 195 places, 1050 transitions, 30316 flow [2023-09-01 13:02:47,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=26868, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=998, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=839, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=30316, PETRI_PLACES=195, PETRI_TRANSITIONS=1050} [2023-09-01 13:02:47,565 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 137 predicate places. [2023-09-01 13:02:47,565 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 1050 transitions, 30316 flow [2023-09-01 13:02:47,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 137.0) internal successors, (1233), 9 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:02:47,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:02:47,566 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] [2023-09-01 13:02:47,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-09-01 13:02:47,566 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-09-01 13:02:47,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:02:47,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1983354975, now seen corresponding path program 21 times [2023-09-01 13:02:47,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:02:47,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140178505] [2023-09-01 13:02:47,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:02:47,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:02:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:02:47,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:02:47,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:02:47,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140178505] [2023-09-01 13:02:47,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140178505] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:02:47,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:02:47,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 13:02:47,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879640191] [2023-09-01 13:02:47,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:02:47,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 13:02:47,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:02:47,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 13:02:47,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-09-01 13:02:47,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-09-01 13:02:47,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 1050 transitions, 30316 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) [2023-09-01 13:02:47,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:02:47,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-09-01 13:02:47,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:03:01,710 INFO L130 PetriNetUnfolder]: 36686/64008 cut-off events. [2023-09-01 13:03:01,710 INFO L131 PetriNetUnfolder]: For 1170308/1184502 co-relation queries the response was YES. [2023-09-01 13:03:02,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415987 conditions, 64008 events. 36686/64008 cut-off events. For 1170308/1184502 co-relation queries the response was YES. Maximal size of possible extension queue 3174. Compared 612005 event pairs, 10818 based on Foata normal form. 1570/64116 useless extension candidates. Maximal degree in co-relation 415931. Up to 46276 conditions per place. [2023-09-01 13:03:02,513 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 661 selfloop transitions, 503 changer transitions 8/1194 dead transitions. [2023-09-01 13:03:02,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 1194 transitions, 34255 flow [2023-09-01 13:03:02,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-09-01 13:03:02,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-09-01 13:03:02,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2725 transitions. [2023-09-01 13:03:02,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.510395205094587 [2023-09-01 13:03:02,516 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2725 transitions. [2023-09-01 13:03:02,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2725 transitions. [2023-09-01 13:03:02,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:03:02,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2725 transitions. [2023-09-01 13:03:02,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 143.42105263157896) internal successors, (2725), 19 states have internal predecessors, (2725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:03:02,521 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) [2023-09-01 13:03:02,521 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) [2023-09-01 13:03:02,521 INFO L175 Difference]: Start difference. First operand has 195 places, 1050 transitions, 30316 flow. Second operand 19 states and 2725 transitions. [2023-09-01 13:03:02,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 1194 transitions, 34255 flow [2023-09-01 13:03:12,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 1194 transitions, 34216 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-09-01 13:03:13,005 INFO L231 Difference]: Finished difference. Result has 212 places, 1062 transitions, 31658 flow [2023-09-01 13:03:13,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=30277, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1050, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=483, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=31658, PETRI_PLACES=212, PETRI_TRANSITIONS=1062} [2023-09-01 13:03:13,007 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 154 predicate places. [2023-09-01 13:03:13,007 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 1062 transitions, 31658 flow [2023-09-01 13:03:13,007 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) [2023-09-01 13:03:13,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:03:13,008 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] [2023-09-01 13:03:13,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-09-01 13:03:13,008 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-09-01 13:03:13,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:03:13,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1281576133, now seen corresponding path program 22 times [2023-09-01 13:03:13,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:03:13,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220015418] [2023-09-01 13:03:13,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:03:13,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:03:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:03:13,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:03:13,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:03:13,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220015418] [2023-09-01 13:03:13,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220015418] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:03:13,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:03:13,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 13:03:13,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986871220] [2023-09-01 13:03:13,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:03:13,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 13:03:13,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:03:13,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 13:03:13,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-09-01 13:03:13,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 281 [2023-09-01 13:03:13,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 1062 transitions, 31658 flow. Second operand has 11 states, 11 states have (on average 131.36363636363637) internal successors, (1445), 11 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:03:13,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:03:13,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 281 [2023-09-01 13:03:13,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:03:31,518 INFO L130 PetriNetUnfolder]: 45257/75472 cut-off events. [2023-09-01 13:03:31,518 INFO L131 PetriNetUnfolder]: For 1352740/1370934 co-relation queries the response was YES. [2023-09-01 13:03:32,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 489060 conditions, 75472 events. 45257/75472 cut-off events. For 1352740/1370934 co-relation queries the response was YES. Maximal size of possible extension queue 3466. Compared 691339 event pairs, 8398 based on Foata normal form. 3932/77512 useless extension candidates. Maximal degree in co-relation 489002. Up to 23312 conditions per place. [2023-09-01 13:03:32,469 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 234 selfloop transitions, 1175 changer transitions 8/1437 dead transitions. [2023-09-01 13:03:32,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 1437 transitions, 41284 flow [2023-09-01 13:03:32,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-09-01 13:03:32,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-09-01 13:03:32,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2970 transitions. [2023-09-01 13:03:32,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5033045246568378 [2023-09-01 13:03:32,473 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2970 transitions. [2023-09-01 13:03:32,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2970 transitions. [2023-09-01 13:03:32,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:03:32,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2970 transitions. [2023-09-01 13:03:32,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 141.42857142857142) internal successors, (2970), 21 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:03:32,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 281.0) internal successors, (6182), 22 states have internal predecessors, (6182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:03:32,480 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 281.0) internal successors, (6182), 22 states have internal predecessors, (6182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:03:32,481 INFO L175 Difference]: Start difference. First operand has 212 places, 1062 transitions, 31658 flow. Second operand 21 states and 2970 transitions. [2023-09-01 13:03:32,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 1437 transitions, 41284 flow [2023-09-01 13:03:47,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 1437 transitions, 40167 flow, removed 39 selfloop flow, removed 18 redundant places. [2023-09-01 13:03:47,896 INFO L231 Difference]: Finished difference. Result has 220 places, 1277 transitions, 39689 flow [2023-09-01 13:03:47,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=30654, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1062, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=966, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=39689, PETRI_PLACES=220, PETRI_TRANSITIONS=1277} [2023-09-01 13:03:47,897 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 162 predicate places. [2023-09-01 13:03:47,898 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 1277 transitions, 39689 flow [2023-09-01 13:03:47,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 131.36363636363637) internal successors, (1445), 11 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:03:47,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:03:47,898 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] [2023-09-01 13:03:47,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-09-01 13:03:47,899 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-09-01 13:03:47,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:03:47,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1560547539, now seen corresponding path program 23 times [2023-09-01 13:03:47,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:03:47,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584564338] [2023-09-01 13:03:47,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:03:47,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:03:47,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:03:48,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:03:48,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:03:48,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584564338] [2023-09-01 13:03:48,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584564338] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:03:48,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:03:48,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 13:03:48,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393334147] [2023-09-01 13:03:48,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:03:48,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 13:03:48,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:03:48,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 13:03:48,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-09-01 13:03:48,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-09-01 13:03:48,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 1277 transitions, 39689 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) [2023-09-01 13:03:48,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:03:48,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-09-01 13:03:48,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:04:04,241 INFO L130 PetriNetUnfolder]: 36302/63914 cut-off events. [2023-09-01 13:04:04,242 INFO L131 PetriNetUnfolder]: For 1462101/1484000 co-relation queries the response was YES. [2023-09-01 13:04:04,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455767 conditions, 63914 events. 36302/63914 cut-off events. For 1462101/1484000 co-relation queries the response was YES. Maximal size of possible extension queue 3148. Compared 619286 event pairs, 4414 based on Foata normal form. 5784/68325 useless extension candidates. Maximal degree in co-relation 455703. Up to 18710 conditions per place. [2023-09-01 13:04:05,188 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 252 selfloop transitions, 1211 changer transitions 4/1489 dead transitions. [2023-09-01 13:04:05,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 1489 transitions, 45745 flow [2023-09-01 13:04:05,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 13:04:05,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 13:04:05,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1934 transitions. [2023-09-01 13:04:05,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294278675061593 [2023-09-01 13:04:05,192 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1934 transitions. [2023-09-01 13:04:05,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1934 transitions. [2023-09-01 13:04:05,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:04:05,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1934 transitions. [2023-09-01 13:04:05,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 148.76923076923077) internal successors, (1934), 13 states have internal predecessors, (1934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:04:05,196 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) [2023-09-01 13:04:05,197 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) [2023-09-01 13:04:05,197 INFO L175 Difference]: Start difference. First operand has 220 places, 1277 transitions, 39689 flow. Second operand 13 states and 1934 transitions. [2023-09-01 13:04:05,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 1489 transitions, 45745 flow [2023-09-01 13:04:21,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 1489 transitions, 45391 flow, removed 109 selfloop flow, removed 6 redundant places. [2023-09-01 13:04:21,128 INFO L231 Difference]: Finished difference. Result has 228 places, 1338 transitions, 44366 flow [2023-09-01 13:04:21,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=39403, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=44366, PETRI_PLACES=228, PETRI_TRANSITIONS=1338} [2023-09-01 13:04:21,129 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 170 predicate places. [2023-09-01 13:04:21,130 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 1338 transitions, 44366 flow [2023-09-01 13:04:21,130 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) [2023-09-01 13:04:21,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:04:21,130 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] [2023-09-01 13:04:21,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-09-01 13:04:21,131 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-09-01 13:04:21,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:04:21,131 INFO L85 PathProgramCache]: Analyzing trace with hash 18294399, now seen corresponding path program 24 times [2023-09-01 13:04:21,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:04:21,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048929002] [2023-09-01 13:04:21,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:04:21,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:04:21,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:04:21,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:04:21,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:04:21,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048929002] [2023-09-01 13:04:21,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048929002] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:04:21,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:04:21,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 13:04:21,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505957856] [2023-09-01 13:04:21,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:04:21,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 13:04:21,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:04:21,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 13:04:21,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-09-01 13:04:21,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-09-01 13:04:21,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 1338 transitions, 44366 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) [2023-09-01 13:04:21,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:04:21,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-09-01 13:04:21,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:04:39,073 INFO L130 PetriNetUnfolder]: 36267/64185 cut-off events. [2023-09-01 13:04:39,073 INFO L131 PetriNetUnfolder]: For 1701748/1720676 co-relation queries the response was YES. [2023-09-01 13:04:39,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488219 conditions, 64185 events. 36267/64185 cut-off events. For 1701748/1720676 co-relation queries the response was YES. Maximal size of possible extension queue 3179. Compared 623886 event pairs, 11079 based on Foata normal form. 1460/64266 useless extension candidates. Maximal degree in co-relation 488153. Up to 50027 conditions per place. [2023-09-01 13:04:40,253 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 1086 selfloop transitions, 350 changer transitions 14/1472 dead transitions. [2023-09-01 13:04:40,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 1472 transitions, 48727 flow [2023-09-01 13:04:40,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-09-01 13:04:40,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-09-01 13:04:40,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2707 transitions. [2023-09-01 13:04:40,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070237872260723 [2023-09-01 13:04:40,257 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2707 transitions. [2023-09-01 13:04:40,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2707 transitions. [2023-09-01 13:04:40,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:04:40,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2707 transitions. [2023-09-01 13:04:40,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 142.47368421052633) internal successors, (2707), 19 states have internal predecessors, (2707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:04:40,264 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) [2023-09-01 13:04:40,264 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) [2023-09-01 13:04:40,264 INFO L175 Difference]: Start difference. First operand has 228 places, 1338 transitions, 44366 flow. Second operand 19 states and 2707 transitions. [2023-09-01 13:04:40,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 1472 transitions, 48727 flow [2023-09-01 13:04:58,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 1472 transitions, 48223 flow, removed 29 selfloop flow, removed 6 redundant places. [2023-09-01 13:04:58,874 INFO L231 Difference]: Finished difference. Result has 241 places, 1346 transitions, 44867 flow [2023-09-01 13:04:58,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=43929, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=332, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=988, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=44867, PETRI_PLACES=241, PETRI_TRANSITIONS=1346} [2023-09-01 13:04:58,875 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 183 predicate places. [2023-09-01 13:04:58,875 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 1346 transitions, 44867 flow [2023-09-01 13:04:58,876 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) [2023-09-01 13:04:58,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:04:58,876 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] [2023-09-01 13:04:58,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-09-01 13:04:58,876 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-09-01 13:04:58,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:04:58,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1864138089, now seen corresponding path program 25 times [2023-09-01 13:04:58,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:04:58,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5736386] [2023-09-01 13:04:58,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:04:58,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:04:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:04:59,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:04:59,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:04:59,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5736386] [2023-09-01 13:04:59,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5736386] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:04:59,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:04:59,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 13:04:59,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883421693] [2023-09-01 13:04:59,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:04:59,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 13:04:59,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:04:59,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 13:04:59,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-09-01 13:04:59,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-09-01 13:04:59,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 1346 transitions, 44867 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) [2023-09-01 13:04:59,149 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:04:59,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-09-01 13:04:59,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:05:16,776 INFO L130 PetriNetUnfolder]: 36806/65268 cut-off events. [2023-09-01 13:05:16,776 INFO L131 PetriNetUnfolder]: For 1743411/1767207 co-relation queries the response was YES. [2023-09-01 13:05:17,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488248 conditions, 65268 events. 36806/65268 cut-off events. For 1743411/1767207 co-relation queries the response was YES. Maximal size of possible extension queue 3296. Compared 640661 event pairs, 4499 based on Foata normal form. 5474/69425 useless extension candidates. Maximal degree in co-relation 488181. Up to 17612 conditions per place. [2023-09-01 13:05:17,912 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 280 selfloop transitions, 1247 changer transitions 0/1549 dead transitions. [2023-09-01 13:05:17,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 1549 transitions, 49686 flow [2023-09-01 13:05:17,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-09-01 13:05:17,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-09-01 13:05:17,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2502 transitions. [2023-09-01 13:05:17,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5237596818086665 [2023-09-01 13:05:17,914 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2502 transitions. [2023-09-01 13:05:17,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2502 transitions. [2023-09-01 13:05:17,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:05:17,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2502 transitions. [2023-09-01 13:05:17,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 147.1764705882353) internal successors, (2502), 17 states have internal predecessors, (2502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:05:17,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 281.0) internal successors, (5058), 18 states have internal predecessors, (5058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:05:17,921 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 281.0) internal successors, (5058), 18 states have internal predecessors, (5058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:05:17,921 INFO L175 Difference]: Start difference. First operand has 241 places, 1346 transitions, 44867 flow. Second operand 17 states and 2502 transitions. [2023-09-01 13:05:17,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 1549 transitions, 49686 flow [2023-09-01 13:05:37,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 1549 transitions, 49218 flow, removed 26 selfloop flow, removed 13 redundant places. [2023-09-01 13:05:37,707 INFO L231 Difference]: Finished difference. Result has 246 places, 1375 transitions, 47801 flow [2023-09-01 13:05:37,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=44413, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=47801, PETRI_PLACES=246, PETRI_TRANSITIONS=1375} [2023-09-01 13:05:37,709 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 188 predicate places. [2023-09-01 13:05:37,709 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 1375 transitions, 47801 flow [2023-09-01 13:05:37,709 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) [2023-09-01 13:05:37,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:05:37,709 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] [2023-09-01 13:05:37,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-09-01 13:05:37,710 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-09-01 13:05:37,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:05:37,710 INFO L85 PathProgramCache]: Analyzing trace with hash -2147096413, now seen corresponding path program 26 times [2023-09-01 13:05:37,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:05:37,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044450235] [2023-09-01 13:05:37,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:05:37,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:05:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:05:37,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:05:37,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:05:37,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044450235] [2023-09-01 13:05:37,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044450235] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:05:37,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:05:37,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 13:05:37,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512892531] [2023-09-01 13:05:37,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:05:37,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 13:05:37,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:05:37,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 13:05:37,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-09-01 13:05:37,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-09-01 13:05:37,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 1375 transitions, 47801 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) [2023-09-01 13:05:37,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:05:37,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-09-01 13:05:37,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:05:56,637 INFO L130 PetriNetUnfolder]: 37526/66797 cut-off events. [2023-09-01 13:05:56,638 INFO L131 PetriNetUnfolder]: For 1979260/2002645 co-relation queries the response was YES. [2023-09-01 13:05:57,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521960 conditions, 66797 events. 37526/66797 cut-off events. For 1979260/2002645 co-relation queries the response was YES. Maximal size of possible extension queue 3451. Compared 661858 event pairs, 4550 based on Foata normal form. 5706/71021 useless extension candidates. Maximal degree in co-relation 521892. Up to 18240 conditions per place. [2023-09-01 13:05:57,849 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 276 selfloop transitions, 1285 changer transitions 2/1585 dead transitions. [2023-09-01 13:05:57,849 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 1585 transitions, 53013 flow [2023-09-01 13:05:57,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 13:05:57,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 13:05:57,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1938 transitions. [2023-09-01 13:05:57,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5305228579249932 [2023-09-01 13:05:57,851 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1938 transitions. [2023-09-01 13:05:57,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1938 transitions. [2023-09-01 13:05:57,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:05:57,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1938 transitions. [2023-09-01 13:05:57,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 149.07692307692307) internal successors, (1938), 13 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:05:57,854 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) [2023-09-01 13:05:57,854 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) [2023-09-01 13:05:57,855 INFO L175 Difference]: Start difference. First operand has 246 places, 1375 transitions, 47801 flow. Second operand 13 states and 1938 transitions. [2023-09-01 13:05:57,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 1585 transitions, 53013 flow [2023-09-01 13:06:21,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 1585 transitions, 49692 flow, removed 10 selfloop flow, removed 14 redundant places. [2023-09-01 13:06:21,699 INFO L231 Difference]: Finished difference. Result has 246 places, 1413 transitions, 48270 flow [2023-09-01 13:06:21,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=44599, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=48270, PETRI_PLACES=246, PETRI_TRANSITIONS=1413} [2023-09-01 13:06:21,701 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 188 predicate places. [2023-09-01 13:06:21,701 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 1413 transitions, 48270 flow [2023-09-01 13:06:21,701 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) [2023-09-01 13:06:21,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:06:21,701 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] [2023-09-01 13:06:21,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-09-01 13:06:21,701 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-09-01 13:06:21,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:06:21,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1822411281, now seen corresponding path program 27 times [2023-09-01 13:06:21,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:06:21,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324187148] [2023-09-01 13:06:21,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:06:21,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:06:21,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:06:21,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:06:21,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:06:21,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324187148] [2023-09-01 13:06:21,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324187148] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:06:21,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:06:21,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 13:06:21,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672663781] [2023-09-01 13:06:21,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:06:21,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 13:06:21,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:06:21,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 13:06:21,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-09-01 13:06:22,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 281 [2023-09-01 13:06:22,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 1413 transitions, 48270 flow. Second operand has 9 states, 9 states have (on average 132.11111111111111) internal successors, (1189), 9 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:06:22,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:06:22,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 281 [2023-09-01 13:06:22,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:06:44,413 INFO L130 PetriNetUnfolder]: 44761/76606 cut-off events. [2023-09-01 13:06:44,413 INFO L131 PetriNetUnfolder]: For 2175490/2196616 co-relation queries the response was YES. [2023-09-01 13:06:45,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 588563 conditions, 76606 events. 44761/76606 cut-off events. For 2175490/2196616 co-relation queries the response was YES. Maximal size of possible extension queue 3810. Compared 733677 event pairs, 5703 based on Foata normal form. 5528/80482 useless extension candidates. Maximal degree in co-relation 588494. Up to 22478 conditions per place. [2023-09-01 13:06:45,747 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 264 selfloop transitions, 1320 changer transitions 5/1609 dead transitions. [2023-09-01 13:06:45,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 1609 transitions, 53447 flow [2023-09-01 13:06:45,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 13:06:45,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 13:06:45,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1755 transitions. [2023-09-01 13:06:45,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204626334519573 [2023-09-01 13:06:45,751 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1755 transitions. [2023-09-01 13:06:45,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1755 transitions. [2023-09-01 13:06:45,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:06:45,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1755 transitions. [2023-09-01 13:06:45,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 146.25) internal successors, (1755), 12 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:06:45,764 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) [2023-09-01 13:06:45,764 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) [2023-09-01 13:06:45,764 INFO L175 Difference]: Start difference. First operand has 246 places, 1413 transitions, 48270 flow. Second operand 12 states and 1755 transitions. [2023-09-01 13:06:45,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 1609 transitions, 53447 flow [2023-09-01 13:07:16,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 1609 transitions, 52964 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-09-01 13:07:16,946 INFO L231 Difference]: Finished difference. Result has 252 places, 1447 transitions, 51518 flow [2023-09-01 13:07:16,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=47799, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1286, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=51518, PETRI_PLACES=252, PETRI_TRANSITIONS=1447} [2023-09-01 13:07:16,948 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 194 predicate places. [2023-09-01 13:07:16,948 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 1447 transitions, 51518 flow [2023-09-01 13:07:16,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 132.11111111111111) internal successors, (1189), 9 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:07:16,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:07:16,948 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] [2023-09-01 13:07:16,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-09-01 13:07:16,948 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-09-01 13:07:16,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:07:16,949 INFO L85 PathProgramCache]: Analyzing trace with hash -267163939, now seen corresponding path program 28 times [2023-09-01 13:07:16,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:07:16,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239027416] [2023-09-01 13:07:16,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:07:16,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:07:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:07:17,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:07:17,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:07:17,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239027416] [2023-09-01 13:07:17,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239027416] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:07:17,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:07:17,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 13:07:17,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84248013] [2023-09-01 13:07:17,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:07:17,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 13:07:17,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:07:17,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 13:07:17,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-09-01 13:07:17,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-09-01 13:07:17,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 1447 transitions, 51518 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) [2023-09-01 13:07:17,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:07:17,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-09-01 13:07:17,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:07:37,790 INFO L130 PetriNetUnfolder]: 37794/67522 cut-off events. [2023-09-01 13:07:37,790 INFO L131 PetriNetUnfolder]: For 2212384/2234088 co-relation queries the response was YES. [2023-09-01 13:07:38,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 552829 conditions, 67522 events. 37794/67522 cut-off events. For 2212384/2234088 co-relation queries the response was YES. Maximal size of possible extension queue 3702. Compared 673974 event pairs, 6822 based on Foata normal form. 5778/71722 useless extension candidates. Maximal degree in co-relation 552758. Up to 22152 conditions per place. [2023-09-01 13:07:38,816 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 389 selfloop transitions, 1239 changer transitions 53/1703 dead transitions. [2023-09-01 13:07:38,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 1703 transitions, 58844 flow [2023-09-01 13:07:38,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-09-01 13:07:38,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-09-01 13:07:38,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2790 transitions. [2023-09-01 13:07:38,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.522569769619779 [2023-09-01 13:07:38,818 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2790 transitions. [2023-09-01 13:07:38,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2790 transitions. [2023-09-01 13:07:38,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:07:38,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2790 transitions. [2023-09-01 13:07:38,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 146.8421052631579) internal successors, (2790), 19 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:07:38,825 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) [2023-09-01 13:07:38,825 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) [2023-09-01 13:07:38,825 INFO L175 Difference]: Start difference. First operand has 252 places, 1447 transitions, 51518 flow. Second operand 19 states and 2790 transitions. [2023-09-01 13:07:38,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 1703 transitions, 58844 flow [2023-09-01 13:08:02,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 1703 transitions, 57796 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-09-01 13:08:03,017 INFO L231 Difference]: Finished difference. Result has 264 places, 1482 transitions, 54028 flow [2023-09-01 13:08:03,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=50530, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=54028, PETRI_PLACES=264, PETRI_TRANSITIONS=1482} [2023-09-01 13:08:03,018 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 206 predicate places. [2023-09-01 13:08:03,018 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 1482 transitions, 54028 flow [2023-09-01 13:08:03,019 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) [2023-09-01 13:08:03,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:08:03,019 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] [2023-09-01 13:08:03,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-09-01 13:08:03,019 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-09-01 13:08:03,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:08:03,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1574487537, now seen corresponding path program 29 times [2023-09-01 13:08:03,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:08:03,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602533643] [2023-09-01 13:08:03,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:08:03,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:08:03,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:08:03,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:08:03,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:08:03,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602533643] [2023-09-01 13:08:03,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602533643] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:08:03,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:08:03,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 13:08:03,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308628058] [2023-09-01 13:08:03,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:08:03,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 13:08:03,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:08:03,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 13:08:03,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-09-01 13:08:03,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-09-01 13:08:03,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 1482 transitions, 54028 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) [2023-09-01 13:08:03,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:08:03,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-09-01 13:08:03,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:08:24,533 INFO L130 PetriNetUnfolder]: 37282/66952 cut-off events. [2023-09-01 13:08:24,533 INFO L131 PetriNetUnfolder]: For 2300486/2319402 co-relation queries the response was YES. [2023-09-01 13:08:25,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 552507 conditions, 66952 events. 37282/66952 cut-off events. For 2300486/2319402 co-relation queries the response was YES. Maximal size of possible extension queue 3667. Compared 671903 event pairs, 6746 based on Foata normal form. 4906/70159 useless extension candidates. Maximal degree in co-relation 552436. Up to 22217 conditions per place. [2023-09-01 13:08:25,787 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 377 selfloop transitions, 1229 changer transitions 45/1673 dead transitions. [2023-09-01 13:08:25,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 1673 transitions, 59466 flow [2023-09-01 13:08:25,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-09-01 13:08:25,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-09-01 13:08:25,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2764 transitions. [2023-09-01 13:08:25,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5176999438097022 [2023-09-01 13:08:25,790 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2764 transitions. [2023-09-01 13:08:25,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2764 transitions. [2023-09-01 13:08:25,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:08:25,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2764 transitions. [2023-09-01 13:08:25,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 145.47368421052633) internal successors, (2764), 19 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:08:25,795 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) [2023-09-01 13:08:25,795 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) [2023-09-01 13:08:25,795 INFO L175 Difference]: Start difference. First operand has 264 places, 1482 transitions, 54028 flow. Second operand 19 states and 2764 transitions. [2023-09-01 13:08:25,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 1673 transitions, 59466 flow [2023-09-01 13:08:51,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 1673 transitions, 58540 flow, removed 39 selfloop flow, removed 13 redundant places. [2023-09-01 13:08:51,122 INFO L231 Difference]: Finished difference. Result has 271 places, 1474 transitions, 55216 flow [2023-09-01 13:08:51,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=53157, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=55216, PETRI_PLACES=271, PETRI_TRANSITIONS=1474} [2023-09-01 13:08:51,124 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 213 predicate places. [2023-09-01 13:08:51,124 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 1474 transitions, 55216 flow [2023-09-01 13:08:51,124 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) [2023-09-01 13:08:51,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:08:51,125 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] [2023-09-01 13:08:51,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-09-01 13:08:51,125 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-09-01 13:08:51,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:08:51,126 INFO L85 PathProgramCache]: Analyzing trace with hash -295293549, now seen corresponding path program 30 times [2023-09-01 13:08:51,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:08:51,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550511667] [2023-09-01 13:08:51,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:08:51,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:08:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:08:51,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:08:51,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:08:51,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550511667] [2023-09-01 13:08:51,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550511667] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:08:51,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:08:51,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 13:08:51,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206672441] [2023-09-01 13:08:51,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:08:51,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 13:08:51,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:08:51,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 13:08:51,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-09-01 13:08:51,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-09-01 13:08:51,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 1474 transitions, 55216 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) [2023-09-01 13:08:51,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:08:51,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-09-01 13:08:51,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:09:12,705 INFO L130 PetriNetUnfolder]: 37293/67047 cut-off events. [2023-09-01 13:09:12,705 INFO L131 PetriNetUnfolder]: For 2499806/2518694 co-relation queries the response was YES. [2023-09-01 13:09:13,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565194 conditions, 67047 events. 37293/67047 cut-off events. For 2499806/2518694 co-relation queries the response was YES. Maximal size of possible extension queue 3636. Compared 673899 event pairs, 6764 based on Foata normal form. 4442/69792 useless extension candidates. Maximal degree in co-relation 565122. Up to 22224 conditions per place. [2023-09-01 13:09:13,743 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 409 selfloop transitions, 1260 changer transitions 8/1699 dead transitions. [2023-09-01 13:09:13,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 1699 transitions, 61551 flow [2023-09-01 13:09:13,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-09-01 13:09:13,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-09-01 13:09:13,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2779 transitions. [2023-09-01 13:09:13,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5205094587001311 [2023-09-01 13:09:13,746 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2779 transitions. [2023-09-01 13:09:13,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2779 transitions. [2023-09-01 13:09:13,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:09:13,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2779 transitions. [2023-09-01 13:09:13,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 146.26315789473685) internal successors, (2779), 19 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:09:13,752 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) [2023-09-01 13:09:13,753 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) [2023-09-01 13:09:13,753 INFO L175 Difference]: Start difference. First operand has 271 places, 1474 transitions, 55216 flow. Second operand 19 states and 2779 transitions. [2023-09-01 13:09:13,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 1699 transitions, 61551 flow [2023-09-01 13:09:41,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 1699 transitions, 60600 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-09-01 13:09:41,204 INFO L231 Difference]: Finished difference. Result has 279 places, 1503 transitions, 57929 flow [2023-09-01 13:09:41,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=54317, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=57929, PETRI_PLACES=279, PETRI_TRANSITIONS=1503} [2023-09-01 13:09:41,206 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 221 predicate places. [2023-09-01 13:09:41,206 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 1503 transitions, 57929 flow [2023-09-01 13:09:41,206 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) [2023-09-01 13:09:41,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:09:41,207 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] [2023-09-01 13:09:41,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-09-01 13:09:41,207 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-09-01 13:09:41,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:09:41,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1364030545, now seen corresponding path program 31 times [2023-09-01 13:09:41,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:09:41,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968702841] [2023-09-01 13:09:41,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:09:41,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:09:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:09:41,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:09:41,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:09:41,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968702841] [2023-09-01 13:09:41,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968702841] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:09:41,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:09:41,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 13:09:41,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622180906] [2023-09-01 13:09:41,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:09:41,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 13:09:41,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:09:41,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 13:09:41,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-09-01 13:09:41,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-09-01 13:09:41,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 1503 transitions, 57929 flow. Second operand has 12 states, 12 states have (on average 134.0) internal successors, (1608), 12 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:09:41,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:09:41,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-09-01 13:09:41,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:10:03,295 INFO L130 PetriNetUnfolder]: 37479/67733 cut-off events. [2023-09-01 13:10:03,296 INFO L131 PetriNetUnfolder]: For 2773617/2793145 co-relation queries the response was YES. [2023-09-01 13:10:04,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 591554 conditions, 67733 events. 37479/67733 cut-off events. For 2773617/2793145 co-relation queries the response was YES. Maximal size of possible extension queue 3817. Compared 687429 event pairs, 6776 based on Foata normal form. 4794/71119 useless extension candidates. Maximal degree in co-relation 591481. Up to 21837 conditions per place. [2023-09-01 13:10:04,575 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 424 selfloop transitions, 1308 changer transitions 84/1838 dead transitions. [2023-09-01 13:10:04,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 1838 transitions, 68781 flow [2023-09-01 13:10:04,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-09-01 13:10:04,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-09-01 13:10:04,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3505 transitions. [2023-09-01 13:10:04,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197212336892052 [2023-09-01 13:10:04,578 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3505 transitions. [2023-09-01 13:10:04,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3505 transitions. [2023-09-01 13:10:04,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:10:04,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3505 transitions. [2023-09-01 13:10:04,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 146.04166666666666) internal successors, (3505), 24 states have internal predecessors, (3505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:10:04,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 281.0) internal successors, (7025), 25 states have internal predecessors, (7025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:10:04,586 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 281.0) internal successors, (7025), 25 states have internal predecessors, (7025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:10:04,586 INFO L175 Difference]: Start difference. First operand has 279 places, 1503 transitions, 57929 flow. Second operand 24 states and 3505 transitions. [2023-09-01 13:10:04,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 1838 transitions, 68781 flow [2023-09-01 13:10:33,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 1838 transitions, 68198 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-09-01 13:10:33,963 INFO L231 Difference]: Finished difference. Result has 296 places, 1551 transitions, 61769 flow [2023-09-01 13:10:33,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=57414, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=61769, PETRI_PLACES=296, PETRI_TRANSITIONS=1551} [2023-09-01 13:10:33,964 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 238 predicate places. [2023-09-01 13:10:33,964 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 1551 transitions, 61769 flow [2023-09-01 13:10:33,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 134.0) internal successors, (1608), 12 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:10:33,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:10:33,965 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] [2023-09-01 13:10:33,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-09-01 13:10:33,965 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-09-01 13:10:33,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:10:33,965 INFO L85 PathProgramCache]: Analyzing trace with hash 2036840513, now seen corresponding path program 32 times [2023-09-01 13:10:33,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:10:33,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138862107] [2023-09-01 13:10:33,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:10:33,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:10:33,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:10:34,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:10:34,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:10:34,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138862107] [2023-09-01 13:10:34,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138862107] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:10:34,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:10:34,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 13:10:34,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986491966] [2023-09-01 13:10:34,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:10:34,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 13:10:34,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:10:34,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 13:10:34,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-09-01 13:10:34,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-09-01 13:10:34,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 1551 transitions, 61769 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) [2023-09-01 13:10:34,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:10:34,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-09-01 13:10:34,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15