./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix021_tso.oepc.i --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/pthread-wmm/mix021_tso.oepc.i -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 1821be0ec0c098ba0cd2fb39edc7421f58889218b21285544a5e01e847e429e6 --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 09:46:10,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 09:46:10,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 09:46:10,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 09:46:10,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 09:46:10,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 09:46:10,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 09:46:10,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 09:46:10,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 09:46:10,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 09:46:10,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 09:46:10,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 09:46:10,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 09:46:10,819 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 09:46:10,820 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 09:46:10,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 09:46:10,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 09:46:10,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 09:46:10,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 09:46:10,829 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 09:46:10,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 09:46:10,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 09:46:10,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 09:46:10,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 09:46:10,836 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 09:46:10,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 09:46:10,837 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 09:46:10,838 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 09:46:10,838 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 09:46:10,839 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 09:46:10,839 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 09:46:10,844 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 09:46:10,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 09:46:10,846 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 09:46:10,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 09:46:10,847 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 09:46:10,847 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 09:46:10,847 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 09:46:10,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 09:46:10,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 09:46:10,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 09:46:10,855 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 09:46:10,879 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 09:46:10,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 09:46:10,881 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 09:46:10,881 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 09:46:10,881 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 09:46:10,881 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 09:46:10,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 09:46:10,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 09:46:10,882 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 09:46:10,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 09:46:10,883 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 09:46:10,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 09:46:10,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 09:46:10,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 09:46:10,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 09:46:10,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 09:46:10,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 09:46:10,884 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 09:46:10,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 09:46:10,884 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 09:46:10,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 09:46:10,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 09:46:10,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 09:46:10,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 09:46:10,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:46:10,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 09:46:10,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 09:46:10,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 09:46:10,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 09:46:10,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 09:46:10,886 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 09:46:10,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 09:46:10,887 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 09:46:10,887 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 09:46:10,887 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 09:46:10,887 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1821be0ec0c098ba0cd2fb39edc7421f58889218b21285544a5e01e847e429e6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 09:46:11,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 09:46:11,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 09:46:11,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 09:46:11,161 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 09:46:11,161 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 09:46:11,162 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix021_tso.oepc.i [2023-09-01 09:46:12,250 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 09:46:12,447 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 09:46:12,448 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021_tso.oepc.i [2023-09-01 09:46:12,455 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c152c394c/ba015e49cac6463ea70880c19bbfc631/FLAG0fc806f59 [2023-09-01 09:46:12,465 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c152c394c/ba015e49cac6463ea70880c19bbfc631 [2023-09-01 09:46:12,467 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 09:46:12,470 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 09:46:12,471 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 09:46:12,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 09:46:12,473 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 09:46:12,474 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:46:12" (1/1) ... [2023-09-01 09:46:12,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@794849bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:46:12, skipping insertion in model container [2023-09-01 09:46:12,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:46:12" (1/1) ... [2023-09-01 09:46:12,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 09:46:12,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 09:46:12,646 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021_tso.oepc.i[949,962] [2023-09-01 09:46:12,810 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:46:12,820 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 09:46:12,828 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021_tso.oepc.i[949,962] [2023-09-01 09:46:12,879 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:46:12,909 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:46:12,909 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:46:12,913 INFO L208 MainTranslator]: Completed translation [2023-09-01 09:46:12,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:46:12 WrapperNode [2023-09-01 09:46:12,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 09:46:12,915 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 09:46:12,915 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 09:46:12,915 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 09:46:12,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:46:12" (1/1) ... [2023-09-01 09:46:12,944 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:46:12" (1/1) ... [2023-09-01 09:46:12,964 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 161 [2023-09-01 09:46:12,964 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 09:46:12,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 09:46:12,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 09:46:12,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 09:46:12,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:46:12" (1/1) ... [2023-09-01 09:46:12,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:46:12" (1/1) ... [2023-09-01 09:46:12,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:46:12" (1/1) ... [2023-09-01 09:46:12,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:46:12" (1/1) ... [2023-09-01 09:46:12,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:46:12" (1/1) ... [2023-09-01 09:46:12,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:46:12" (1/1) ... [2023-09-01 09:46:12,979 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:46:12" (1/1) ... [2023-09-01 09:46:12,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:46:12" (1/1) ... [2023-09-01 09:46:12,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 09:46:12,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 09:46:12,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 09:46:12,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 09:46:12,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:46:12" (1/1) ... [2023-09-01 09:46:12,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:46:13,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:46:13,013 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 09:46:13,032 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 09:46:13,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 09:46:13,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 09:46:13,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 09:46:13,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 09:46:13,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 09:46:13,041 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-09-01 09:46:13,041 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-09-01 09:46:13,041 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-09-01 09:46:13,041 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-09-01 09:46:13,041 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-09-01 09:46:13,041 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-09-01 09:46:13,042 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-09-01 09:46:13,042 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-09-01 09:46:13,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 09:46:13,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 09:46:13,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 09:46:13,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 09:46:13,043 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 09:46:13,203 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 09:46:13,204 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 09:46:13,457 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 09:46:13,557 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 09:46:13,558 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 09:46:13,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:46:13 BoogieIcfgContainer [2023-09-01 09:46:13,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 09:46:13,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 09:46:13,561 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 09:46:13,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 09:46:13,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 09:46:12" (1/3) ... [2023-09-01 09:46:13,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e15d3af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:46:13, skipping insertion in model container [2023-09-01 09:46:13,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:46:12" (2/3) ... [2023-09-01 09:46:13,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e15d3af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:46:13, skipping insertion in model container [2023-09-01 09:46:13,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:46:13" (3/3) ... [2023-09-01 09:46:13,566 INFO L112 eAbstractionObserver]: Analyzing ICFG mix021_tso.oepc.i [2023-09-01 09:46:13,570 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 09:46:13,577 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 09:46:13,577 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-09-01 09:46:13,577 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 09:46:13,622 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 09:46:13,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 129 transitions, 278 flow [2023-09-01 09:46:13,701 INFO L130 PetriNetUnfolder]: 2/125 cut-off events. [2023-09-01 09:46:13,701 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:46:13,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 125 events. 2/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2023-09-01 09:46:13,706 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 129 transitions, 278 flow [2023-09-01 09:46:13,714 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 125 transitions, 262 flow [2023-09-01 09:46:13,717 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 09:46:13,723 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 125 transitions, 262 flow [2023-09-01 09:46:13,725 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 125 transitions, 262 flow [2023-09-01 09:46:13,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 125 transitions, 262 flow [2023-09-01 09:46:13,740 INFO L130 PetriNetUnfolder]: 2/125 cut-off events. [2023-09-01 09:46:13,744 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:46:13,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 125 events. 2/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2023-09-01 09:46:13,747 INFO L119 LiptonReduction]: Number of co-enabled transitions 2986 [2023-09-01 09:46:16,949 INFO L134 LiptonReduction]: Checked pairs total: 8489 [2023-09-01 09:46:16,949 INFO L136 LiptonReduction]: Total number of compositions: 106 [2023-09-01 09:46:16,958 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 09:46:16,961 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;@dbfb891, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 09:46:16,961 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-09-01 09:46:16,968 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2023-09-01 09:46:16,968 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:46:16,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:46:16,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:46:16,970 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 09:46:16,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:46:16,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1745103999, now seen corresponding path program 1 times [2023-09-01 09:46:16,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:46:16,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744721501] [2023-09-01 09:46:16,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:46:16,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:46:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:46:17,303 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 09:46:17,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:46:17,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744721501] [2023-09-01 09:46:17,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744721501] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:46:17,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:46:17,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 09:46:17,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438580772] [2023-09-01 09:46:17,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:46:17,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 09:46:17,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:46:17,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 09:46:17,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 09:46:17,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 235 [2023-09-01 09:46:17,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:46:17,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:46:17,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 235 [2023-09-01 09:46:17,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:46:18,001 INFO L130 PetriNetUnfolder]: 3975/5715 cut-off events. [2023-09-01 09:46:18,001 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2023-09-01 09:46:18,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11295 conditions, 5715 events. 3975/5715 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 30661 event pairs, 1089 based on Foata normal form. 192/5483 useless extension candidates. Maximal degree in co-relation 11283. Up to 4303 conditions per place. [2023-09-01 09:46:18,024 INFO L137 encePairwiseOnDemand]: 231/235 looper letters, 35 selfloop transitions, 2 changer transitions 4/46 dead transitions. [2023-09-01 09:46:18,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 46 transitions, 189 flow [2023-09-01 09:46:18,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:46:18,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:46:18,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 386 transitions. [2023-09-01 09:46:18,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5475177304964539 [2023-09-01 09:46:18,034 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 386 transitions. [2023-09-01 09:46:18,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 386 transitions. [2023-09-01 09:46:18,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:46:18,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 386 transitions. [2023-09-01 09:46:18,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:46:18,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 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 09:46:18,043 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 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 09:46:18,045 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 76 flow. Second operand 3 states and 386 transitions. [2023-09-01 09:46:18,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 46 transitions, 189 flow [2023-09-01 09:46:18,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 46 transitions, 184 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 09:46:18,049 INFO L231 Difference]: Finished difference. Result has 41 places, 28 transitions, 68 flow [2023-09-01 09:46:18,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=41, PETRI_TRANSITIONS=28} [2023-09-01 09:46:18,053 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -3 predicate places. [2023-09-01 09:46:18,053 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 28 transitions, 68 flow [2023-09-01 09:46:18,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:46:18,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:46:18,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:46:18,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 09:46:18,054 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 09:46:18,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:46:18,055 INFO L85 PathProgramCache]: Analyzing trace with hash 2095058766, now seen corresponding path program 1 times [2023-09-01 09:46:18,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:46:18,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20383027] [2023-09-01 09:46:18,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:46:18,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:46:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:46:18,625 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 09:46:18,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:46:18,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20383027] [2023-09-01 09:46:18,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20383027] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:46:18,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:46:18,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:46:18,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286025677] [2023-09-01 09:46:18,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:46:18,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:46:18,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:46:18,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:46:18,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:46:18,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 235 [2023-09-01 09:46:18,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 28 transitions, 68 flow. Second operand has 5 states, 5 states have (on average 103.4) internal successors, (517), 5 states have internal predecessors, (517), 0 states have call successors, (0), 0 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 09:46:18,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:46:18,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 235 [2023-09-01 09:46:18,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:46:19,861 INFO L130 PetriNetUnfolder]: 9959/13683 cut-off events. [2023-09-01 09:46:19,862 INFO L131 PetriNetUnfolder]: For 724/724 co-relation queries the response was YES. [2023-09-01 09:46:19,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28305 conditions, 13683 events. 9959/13683 cut-off events. For 724/724 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 69874 event pairs, 2087 based on Foata normal form. 640/14319 useless extension candidates. Maximal degree in co-relation 28295. Up to 7441 conditions per place. [2023-09-01 09:46:19,942 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 42 selfloop transitions, 11 changer transitions 38/92 dead transitions. [2023-09-01 09:46:19,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 92 transitions, 388 flow [2023-09-01 09:46:19,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 09:46:19,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 09:46:19,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 801 transitions. [2023-09-01 09:46:19,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4869300911854103 [2023-09-01 09:46:19,946 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 801 transitions. [2023-09-01 09:46:19,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 801 transitions. [2023-09-01 09:46:19,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:46:19,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 801 transitions. [2023-09-01 09:46:19,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.42857142857143) internal successors, (801), 7 states have internal predecessors, (801), 0 states have call successors, (0), 0 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 09:46:19,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 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 09:46:19,951 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 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 09:46:19,952 INFO L175 Difference]: Start difference. First operand has 41 places, 28 transitions, 68 flow. Second operand 7 states and 801 transitions. [2023-09-01 09:46:19,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 92 transitions, 388 flow [2023-09-01 09:46:19,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 92 transitions, 374 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 09:46:19,955 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 170 flow [2023-09-01 09:46:19,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=170, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-09-01 09:46:19,956 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 5 predicate places. [2023-09-01 09:46:19,956 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 170 flow [2023-09-01 09:46:19,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 103.4) internal successors, (517), 5 states have internal predecessors, (517), 0 states have call successors, (0), 0 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 09:46:19,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:46:19,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:46:19,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 09:46:19,957 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 09:46:19,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:46:19,957 INFO L85 PathProgramCache]: Analyzing trace with hash -892731973, now seen corresponding path program 1 times [2023-09-01 09:46:19,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:46:19,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447750925] [2023-09-01 09:46:19,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:46:19,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:46:19,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:46:20,330 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 09:46:20,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:46:20,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447750925] [2023-09-01 09:46:20,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447750925] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:46:20,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:46:20,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:46:20,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080710692] [2023-09-01 09:46:20,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:46:20,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:46:20,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:46:20,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:46:20,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:46:20,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 235 [2023-09-01 09:46:20,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 170 flow. Second operand has 5 states, 5 states have (on average 103.8) internal successors, (519), 5 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:46:20,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:46:20,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 235 [2023-09-01 09:46:20,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:46:21,572 INFO L130 PetriNetUnfolder]: 9610/13697 cut-off events. [2023-09-01 09:46:21,572 INFO L131 PetriNetUnfolder]: For 15342/15342 co-relation queries the response was YES. [2023-09-01 09:46:21,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42610 conditions, 13697 events. 9610/13697 cut-off events. For 15342/15342 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 76575 event pairs, 1155 based on Foata normal form. 478/14175 useless extension candidates. Maximal degree in co-relation 42594. Up to 8997 conditions per place. [2023-09-01 09:46:21,641 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 54 selfloop transitions, 21 changer transitions 35/111 dead transitions. [2023-09-01 09:46:21,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 111 transitions, 710 flow [2023-09-01 09:46:21,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 09:46:21,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 09:46:21,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 812 transitions. [2023-09-01 09:46:21,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49361702127659574 [2023-09-01 09:46:21,643 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 812 transitions. [2023-09-01 09:46:21,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 812 transitions. [2023-09-01 09:46:21,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:46:21,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 812 transitions. [2023-09-01 09:46:21,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 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 09:46:21,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 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 09:46:21,648 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 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 09:46:21,648 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 170 flow. Second operand 7 states and 812 transitions. [2023-09-01 09:46:21,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 111 transitions, 710 flow [2023-09-01 09:46:21,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 111 transitions, 698 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-09-01 09:46:21,753 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 308 flow [2023-09-01 09:46:21,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=308, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2023-09-01 09:46:21,754 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 11 predicate places. [2023-09-01 09:46:21,756 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 308 flow [2023-09-01 09:46:21,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 103.8) internal successors, (519), 5 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:46:21,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:46:21,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:46:21,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 09:46:21,757 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 09:46:21,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:46:21,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1904936741, now seen corresponding path program 1 times [2023-09-01 09:46:21,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:46:21,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170675688] [2023-09-01 09:46:21,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:46:21,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:46:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:46:22,103 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 09:46:22,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:46:22,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170675688] [2023-09-01 09:46:22,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170675688] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:46:22,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:46:22,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:46:22,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920316969] [2023-09-01 09:46:22,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:46:22,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:46:22,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:46:22,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:46:22,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:46:22,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 235 [2023-09-01 09:46:22,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 308 flow. Second operand has 5 states, 5 states have (on average 115.8) internal successors, (579), 5 states have internal predecessors, (579), 0 states have call successors, (0), 0 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 09:46:22,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:46:22,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 235 [2023-09-01 09:46:22,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:46:23,198 INFO L130 PetriNetUnfolder]: 9382/13573 cut-off events. [2023-09-01 09:46:23,198 INFO L131 PetriNetUnfolder]: For 28075/28446 co-relation queries the response was YES. [2023-09-01 09:46:23,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50748 conditions, 13573 events. 9382/13573 cut-off events. For 28075/28446 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 79275 event pairs, 2694 based on Foata normal form. 587/13660 useless extension candidates. Maximal degree in co-relation 50727. Up to 10005 conditions per place. [2023-09-01 09:46:23,273 INFO L137 encePairwiseOnDemand]: 230/235 looper letters, 53 selfloop transitions, 5 changer transitions 25/94 dead transitions. [2023-09-01 09:46:23,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 94 transitions, 738 flow [2023-09-01 09:46:23,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:46:23,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:46:23,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 624 transitions. [2023-09-01 09:46:23,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.531063829787234 [2023-09-01 09:46:23,275 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 624 transitions. [2023-09-01 09:46:23,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 624 transitions. [2023-09-01 09:46:23,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:46:23,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 624 transitions. [2023-09-01 09:46:23,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.8) internal successors, (624), 5 states have internal predecessors, (624), 0 states have call successors, (0), 0 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 09:46:23,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 235.0) internal successors, (1410), 6 states have internal predecessors, (1410), 0 states have call successors, (0), 0 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 09:46:23,279 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 235.0) internal successors, (1410), 6 states have internal predecessors, (1410), 0 states have call successors, (0), 0 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 09:46:23,279 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 308 flow. Second operand 5 states and 624 transitions. [2023-09-01 09:46:23,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 94 transitions, 738 flow [2023-09-01 09:46:23,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 94 transitions, 728 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-09-01 09:46:23,698 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 361 flow [2023-09-01 09:46:23,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=361, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2023-09-01 09:46:23,698 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 11 predicate places. [2023-09-01 09:46:23,698 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 361 flow [2023-09-01 09:46:23,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.8) internal successors, (579), 5 states have internal predecessors, (579), 0 states have call successors, (0), 0 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 09:46:23,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:46:23,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:46:23,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 09:46:23,699 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 09:46:23,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:46:23,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1592797087, now seen corresponding path program 1 times [2023-09-01 09:46:23,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:46:23,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758001809] [2023-09-01 09:46:23,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:46:23,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:46:23,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:46:23,905 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 09:46:23,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:46:23,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758001809] [2023-09-01 09:46:23,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758001809] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:46:23,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:46:23,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:46:23,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052932742] [2023-09-01 09:46:23,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:46:23,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:46:23,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:46:23,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:46:23,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:46:23,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 235 [2023-09-01 09:46:23,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 361 flow. Second operand has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 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 09:46:23,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:46:23,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 235 [2023-09-01 09:46:23,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:46:24,905 INFO L130 PetriNetUnfolder]: 9150/13312 cut-off events. [2023-09-01 09:46:24,906 INFO L131 PetriNetUnfolder]: For 29963/30194 co-relation queries the response was YES. [2023-09-01 09:46:24,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52731 conditions, 13312 events. 9150/13312 cut-off events. For 29963/30194 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 77837 event pairs, 1727 based on Foata normal form. 504/13434 useless extension candidates. Maximal degree in co-relation 52709. Up to 8735 conditions per place. [2023-09-01 09:46:24,968 INFO L137 encePairwiseOnDemand]: 227/235 looper letters, 63 selfloop transitions, 19 changer transitions 22/115 dead transitions. [2023-09-01 09:46:24,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 115 transitions, 958 flow [2023-09-01 09:46:24,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 09:46:24,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 09:46:24,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 742 transitions. [2023-09-01 09:46:24,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526241134751773 [2023-09-01 09:46:24,970 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 742 transitions. [2023-09-01 09:46:24,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 742 transitions. [2023-09-01 09:46:24,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:46:24,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 742 transitions. [2023-09-01 09:46:24,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 123.66666666666667) internal successors, (742), 6 states have internal predecessors, (742), 0 states have call successors, (0), 0 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 09:46:24,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 0 states have call successors, (0), 0 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 09:46:24,973 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 0 states have call successors, (0), 0 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 09:46:24,974 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 361 flow. Second operand 6 states and 742 transitions. [2023-09-01 09:46:24,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 115 transitions, 958 flow [2023-09-01 09:46:25,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 115 transitions, 949 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-09-01 09:46:25,079 INFO L231 Difference]: Finished difference. Result has 59 places, 62 transitions, 525 flow [2023-09-01 09:46:25,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=525, PETRI_PLACES=59, PETRI_TRANSITIONS=62} [2023-09-01 09:46:25,082 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 15 predicate places. [2023-09-01 09:46:25,082 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 62 transitions, 525 flow [2023-09-01 09:46:25,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 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 09:46:25,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:46:25,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:46:25,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 09:46:25,083 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 09:46:25,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:46:25,083 INFO L85 PathProgramCache]: Analyzing trace with hash -65965793, now seen corresponding path program 2 times [2023-09-01 09:46:25,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:46:25,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285248107] [2023-09-01 09:46:25,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:46:25,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:46:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:46:25,512 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 09:46:25,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:46:25,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285248107] [2023-09-01 09:46:25,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285248107] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:46:25,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:46:25,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:46:25,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206201979] [2023-09-01 09:46:25,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:46:25,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 09:46:25,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:46:25,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 09:46:25,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 09:46:25,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 235 [2023-09-01 09:46:25,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 62 transitions, 525 flow. Second operand has 6 states, 6 states have (on average 111.5) internal successors, (669), 6 states have internal predecessors, (669), 0 states have call successors, (0), 0 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 09:46:25,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:46:25,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 235 [2023-09-01 09:46:25,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:46:26,814 INFO L130 PetriNetUnfolder]: 9194/13338 cut-off events. [2023-09-01 09:46:26,814 INFO L131 PetriNetUnfolder]: For 44857/45303 co-relation queries the response was YES. [2023-09-01 09:46:26,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57191 conditions, 13338 events. 9194/13338 cut-off events. For 44857/45303 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 77005 event pairs, 1933 based on Foata normal form. 730/13700 useless extension candidates. Maximal degree in co-relation 57166. Up to 8803 conditions per place. [2023-09-01 09:46:26,898 INFO L137 encePairwiseOnDemand]: 228/235 looper letters, 65 selfloop transitions, 24 changer transitions 31/131 dead transitions. [2023-09-01 09:46:26,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 131 transitions, 1254 flow [2023-09-01 09:46:26,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 09:46:26,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 09:46:26,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 840 transitions. [2023-09-01 09:46:26,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2023-09-01 09:46:26,901 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 840 transitions. [2023-09-01 09:46:26,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 840 transitions. [2023-09-01 09:46:26,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:46:26,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 840 transitions. [2023-09-01 09:46:26,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 0 states have call successors, (0), 0 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 09:46:26,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 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 09:46:26,905 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 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 09:46:26,905 INFO L175 Difference]: Start difference. First operand has 59 places, 62 transitions, 525 flow. Second operand 7 states and 840 transitions. [2023-09-01 09:46:26,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 131 transitions, 1254 flow [2023-09-01 09:46:27,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 131 transitions, 1219 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-09-01 09:46:27,168 INFO L231 Difference]: Finished difference. Result has 64 places, 70 transitions, 682 flow [2023-09-01 09:46:27,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=682, PETRI_PLACES=64, PETRI_TRANSITIONS=70} [2023-09-01 09:46:27,169 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 20 predicate places. [2023-09-01 09:46:27,169 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 70 transitions, 682 flow [2023-09-01 09:46:27,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.5) internal successors, (669), 6 states have internal predecessors, (669), 0 states have call successors, (0), 0 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 09:46:27,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:46:27,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:46:27,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 09:46:27,170 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 09:46:27,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:46:27,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1594971830, now seen corresponding path program 1 times [2023-09-01 09:46:27,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:46:27,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137453965] [2023-09-01 09:46:27,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:46:27,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:46:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:46:27,743 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 09:46:27,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:46:27,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137453965] [2023-09-01 09:46:27,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137453965] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:46:27,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:46:27,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 09:46:27,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315084831] [2023-09-01 09:46:27,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:46:27,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 09:46:27,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:46:27,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 09:46:27,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-09-01 09:46:27,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 235 [2023-09-01 09:46:27,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 70 transitions, 682 flow. Second operand has 7 states, 7 states have (on average 100.28571428571429) internal successors, (702), 7 states have internal predecessors, (702), 0 states have call successors, (0), 0 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 09:46:27,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:46:27,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 235 [2023-09-01 09:46:27,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:46:29,223 INFO L130 PetriNetUnfolder]: 12828/17645 cut-off events. [2023-09-01 09:46:29,224 INFO L131 PetriNetUnfolder]: For 68483/68483 co-relation queries the response was YES. [2023-09-01 09:46:29,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78657 conditions, 17645 events. 12828/17645 cut-off events. For 68483/68483 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 92012 event pairs, 1231 based on Foata normal form. 476/18121 useless extension candidates. Maximal degree in co-relation 78629. Up to 10497 conditions per place. [2023-09-01 09:46:29,313 INFO L137 encePairwiseOnDemand]: 221/235 looper letters, 100 selfloop transitions, 53 changer transitions 46/199 dead transitions. [2023-09-01 09:46:29,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 199 transitions, 1999 flow [2023-09-01 09:46:29,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 09:46:29,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 09:46:29,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 908 transitions. [2023-09-01 09:46:29,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4829787234042553 [2023-09-01 09:46:29,318 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 908 transitions. [2023-09-01 09:46:29,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 908 transitions. [2023-09-01 09:46:29,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:46:29,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 908 transitions. [2023-09-01 09:46:29,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 113.5) internal successors, (908), 8 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 09:46:29,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 0 states have call successors, (0), 0 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 09:46:29,325 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 0 states have call successors, (0), 0 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 09:46:29,325 INFO L175 Difference]: Start difference. First operand has 64 places, 70 transitions, 682 flow. Second operand 8 states and 908 transitions. [2023-09-01 09:46:29,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 199 transitions, 1999 flow [2023-09-01 09:46:29,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 199 transitions, 1967 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-09-01 09:46:29,609 INFO L231 Difference]: Finished difference. Result has 71 places, 100 transitions, 1233 flow [2023-09-01 09:46:29,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1233, PETRI_PLACES=71, PETRI_TRANSITIONS=100} [2023-09-01 09:46:29,609 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 27 predicate places. [2023-09-01 09:46:29,610 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 100 transitions, 1233 flow [2023-09-01 09:46:29,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 100.28571428571429) internal successors, (702), 7 states have internal predecessors, (702), 0 states have call successors, (0), 0 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 09:46:29,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:46:29,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:46:29,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 09:46:29,610 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 09:46:29,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:46:29,611 INFO L85 PathProgramCache]: Analyzing trace with hash 2145388558, now seen corresponding path program 1 times [2023-09-01 09:46:29,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:46:29,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818329171] [2023-09-01 09:46:29,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:46:29,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:46:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:46:30,172 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 09:46:30,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:46:30,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818329171] [2023-09-01 09:46:30,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818329171] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:46:30,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:46:30,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 09:46:30,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077503850] [2023-09-01 09:46:30,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:46:30,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 09:46:30,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:46:30,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 09:46:30,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-09-01 09:46:30,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 235 [2023-09-01 09:46:30,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 100 transitions, 1233 flow. Second operand has 7 states, 7 states have (on average 111.28571428571429) internal successors, (779), 7 states have internal predecessors, (779), 0 states have call successors, (0), 0 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 09:46:30,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:46:30,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 235 [2023-09-01 09:46:30,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:46:31,508 INFO L130 PetriNetUnfolder]: 10058/14406 cut-off events. [2023-09-01 09:46:31,509 INFO L131 PetriNetUnfolder]: For 107839/108560 co-relation queries the response was YES. [2023-09-01 09:46:31,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79820 conditions, 14406 events. 10058/14406 cut-off events. For 107839/108560 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 82075 event pairs, 1558 based on Foata normal form. 670/14589 useless extension candidates. Maximal degree in co-relation 79787. Up to 9865 conditions per place. [2023-09-01 09:46:31,597 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 92 selfloop transitions, 24 changer transitions 24/162 dead transitions. [2023-09-01 09:46:31,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 162 transitions, 2053 flow [2023-09-01 09:46:31,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 09:46:31,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 09:46:31,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 838 transitions. [2023-09-01 09:46:31,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5094224924012158 [2023-09-01 09:46:31,600 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 838 transitions. [2023-09-01 09:46:31,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 838 transitions. [2023-09-01 09:46:31,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:46:31,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 838 transitions. [2023-09-01 09:46:31,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 119.71428571428571) internal successors, (838), 7 states have internal predecessors, (838), 0 states have call successors, (0), 0 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 09:46:31,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 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 09:46:31,603 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 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 09:46:31,604 INFO L175 Difference]: Start difference. First operand has 71 places, 100 transitions, 1233 flow. Second operand 7 states and 838 transitions. [2023-09-01 09:46:31,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 162 transitions, 2053 flow [2023-09-01 09:46:31,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 162 transitions, 2032 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-09-01 09:46:31,732 INFO L231 Difference]: Finished difference. Result has 77 places, 104 transitions, 1368 flow [2023-09-01 09:46:31,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1214, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1368, PETRI_PLACES=77, PETRI_TRANSITIONS=104} [2023-09-01 09:46:31,732 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 33 predicate places. [2023-09-01 09:46:31,733 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 104 transitions, 1368 flow [2023-09-01 09:46:31,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 111.28571428571429) internal successors, (779), 7 states have internal predecessors, (779), 0 states have call successors, (0), 0 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 09:46:31,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:46:31,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:46:31,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 09:46:31,733 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 09:46:31,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:46:31,734 INFO L85 PathProgramCache]: Analyzing trace with hash 2133723940, now seen corresponding path program 1 times [2023-09-01 09:46:31,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:46:31,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333537588] [2023-09-01 09:46:31,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:46:31,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:46:31,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:46:31,957 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 09:46:31,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:46:31,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333537588] [2023-09-01 09:46:31,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333537588] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:46:31,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:46:31,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 09:46:31,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199384969] [2023-09-01 09:46:31,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:46:31,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 09:46:31,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:46:31,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 09:46:31,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 09:46:31,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 235 [2023-09-01 09:46:31,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 104 transitions, 1368 flow. Second operand has 7 states, 7 states have (on average 111.28571428571429) internal successors, (779), 7 states have internal predecessors, (779), 0 states have call successors, (0), 0 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 09:46:31,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:46:31,985 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 235 [2023-09-01 09:46:31,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:46:33,461 INFO L130 PetriNetUnfolder]: 10645/15218 cut-off events. [2023-09-01 09:46:33,462 INFO L131 PetriNetUnfolder]: For 139048/139812 co-relation queries the response was YES. [2023-09-01 09:46:33,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88802 conditions, 15218 events. 10645/15218 cut-off events. For 139048/139812 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 86681 event pairs, 2063 based on Foata normal form. 711/15519 useless extension candidates. Maximal degree in co-relation 88764. Up to 10143 conditions per place. [2023-09-01 09:46:33,568 INFO L137 encePairwiseOnDemand]: 226/235 looper letters, 92 selfloop transitions, 39 changer transitions 12/165 dead transitions. [2023-09-01 09:46:33,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 165 transitions, 2222 flow [2023-09-01 09:46:33,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 09:46:33,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 09:46:33,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 727 transitions. [2023-09-01 09:46:33,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5156028368794326 [2023-09-01 09:46:33,570 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 727 transitions. [2023-09-01 09:46:33,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 727 transitions. [2023-09-01 09:46:33,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:46:33,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 727 transitions. [2023-09-01 09:46:33,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 121.16666666666667) internal successors, (727), 6 states have internal predecessors, (727), 0 states have call successors, (0), 0 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 09:46:33,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 0 states have call successors, (0), 0 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 09:46:33,575 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 0 states have call successors, (0), 0 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 09:46:33,575 INFO L175 Difference]: Start difference. First operand has 77 places, 104 transitions, 1368 flow. Second operand 6 states and 727 transitions. [2023-09-01 09:46:33,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 165 transitions, 2222 flow [2023-09-01 09:46:33,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 165 transitions, 2160 flow, removed 23 selfloop flow, removed 5 redundant places. [2023-09-01 09:46:33,927 INFO L231 Difference]: Finished difference. Result has 76 places, 115 transitions, 1612 flow [2023-09-01 09:46:33,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1612, PETRI_PLACES=76, PETRI_TRANSITIONS=115} [2023-09-01 09:46:33,927 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 32 predicate places. [2023-09-01 09:46:33,927 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 115 transitions, 1612 flow [2023-09-01 09:46:33,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 111.28571428571429) internal successors, (779), 7 states have internal predecessors, (779), 0 states have call successors, (0), 0 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 09:46:33,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:46:33,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:46:33,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 09:46:33,928 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 09:46:33,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:46:33,928 INFO L85 PathProgramCache]: Analyzing trace with hash -664159116, now seen corresponding path program 2 times [2023-09-01 09:46:33,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:46:33,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691244517] [2023-09-01 09:46:33,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:46:33,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:46:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:46:34,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:46:34,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:46:34,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691244517] [2023-09-01 09:46:34,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691244517] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:46:34,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:46:34,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 09:46:34,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515010848] [2023-09-01 09:46:34,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:46:34,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 09:46:34,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:46:34,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 09:46:34,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 09:46:34,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 235 [2023-09-01 09:46:34,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 115 transitions, 1612 flow. Second operand has 7 states, 7 states have (on average 112.28571428571429) internal successors, (786), 7 states have internal predecessors, (786), 0 states have call successors, (0), 0 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 09:46:34,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:46:34,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 235 [2023-09-01 09:46:34,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:46:35,989 INFO L130 PetriNetUnfolder]: 11733/16834 cut-off events. [2023-09-01 09:46:35,990 INFO L131 PetriNetUnfolder]: For 160757/161571 co-relation queries the response was YES. [2023-09-01 09:46:36,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100140 conditions, 16834 events. 11733/16834 cut-off events. For 160757/161571 co-relation queries the response was YES. Maximal size of possible extension queue 678. Compared 98555 event pairs, 2125 based on Foata normal form. 860/17176 useless extension candidates. Maximal degree in co-relation 100103. Up to 8738 conditions per place. [2023-09-01 09:46:36,100 INFO L137 encePairwiseOnDemand]: 226/235 looper letters, 91 selfloop transitions, 52 changer transitions 31/196 dead transitions. [2023-09-01 09:46:36,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 196 transitions, 2780 flow [2023-09-01 09:46:36,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 09:46:36,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 09:46:36,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 970 transitions. [2023-09-01 09:46:36,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159574468085106 [2023-09-01 09:46:36,103 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 970 transitions. [2023-09-01 09:46:36,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 970 transitions. [2023-09-01 09:46:36,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:46:36,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 970 transitions. [2023-09-01 09:46:36,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 121.25) internal successors, (970), 8 states have internal predecessors, (970), 0 states have call successors, (0), 0 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 09:46:36,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 0 states have call successors, (0), 0 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 09:46:36,107 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 0 states have call successors, (0), 0 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 09:46:36,107 INFO L175 Difference]: Start difference. First operand has 76 places, 115 transitions, 1612 flow. Second operand 8 states and 970 transitions. [2023-09-01 09:46:36,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 196 transitions, 2780 flow [2023-09-01 09:46:36,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 196 transitions, 2661 flow, removed 26 selfloop flow, removed 4 redundant places. [2023-09-01 09:46:36,300 INFO L231 Difference]: Finished difference. Result has 83 places, 123 transitions, 1855 flow [2023-09-01 09:46:36,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1501, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1855, PETRI_PLACES=83, PETRI_TRANSITIONS=123} [2023-09-01 09:46:36,300 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 39 predicate places. [2023-09-01 09:46:36,300 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 123 transitions, 1855 flow [2023-09-01 09:46:36,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.28571428571429) internal successors, (786), 7 states have internal predecessors, (786), 0 states have call successors, (0), 0 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 09:46:36,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:46:36,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:46:36,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 09:46:36,301 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 09:46:36,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:46:36,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1720442247, now seen corresponding path program 1 times [2023-09-01 09:46:36,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:46:36,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291805216] [2023-09-01 09:46:36,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:46:36,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:46:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:46:36,686 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 09:46:36,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:46:36,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291805216] [2023-09-01 09:46:36,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291805216] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:46:36,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:46:36,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 09:46:36,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848483767] [2023-09-01 09:46:36,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:46:36,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 09:46:36,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:46:36,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 09:46:36,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-09-01 09:46:36,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 235 [2023-09-01 09:46:36,714 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 123 transitions, 1855 flow. Second operand has 8 states, 8 states have (on average 111.125) internal successors, (889), 8 states have internal predecessors, (889), 0 states have call successors, (0), 0 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 09:46:36,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:46:36,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 235 [2023-09-01 09:46:36,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:46:38,580 INFO L130 PetriNetUnfolder]: 12089/17344 cut-off events. [2023-09-01 09:46:38,580 INFO L131 PetriNetUnfolder]: For 199308/200050 co-relation queries the response was YES. [2023-09-01 09:46:38,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108990 conditions, 17344 events. 12089/17344 cut-off events. For 199308/200050 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 102257 event pairs, 2223 based on Foata normal form. 561/17297 useless extension candidates. Maximal degree in co-relation 108949. Up to 11405 conditions per place. [2023-09-01 09:46:38,709 INFO L137 encePairwiseOnDemand]: 226/235 looper letters, 102 selfloop transitions, 44 changer transitions 10/178 dead transitions. [2023-09-01 09:46:38,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 178 transitions, 2686 flow [2023-09-01 09:46:38,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 09:46:38,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 09:46:38,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 725 transitions. [2023-09-01 09:46:38,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5141843971631206 [2023-09-01 09:46:38,711 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 725 transitions. [2023-09-01 09:46:38,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 725 transitions. [2023-09-01 09:46:38,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:46:38,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 725 transitions. [2023-09-01 09:46:38,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 120.83333333333333) internal successors, (725), 6 states have internal predecessors, (725), 0 states have call successors, (0), 0 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 09:46:38,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 0 states have call successors, (0), 0 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 09:46:38,714 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 0 states have call successors, (0), 0 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 09:46:38,714 INFO L175 Difference]: Start difference. First operand has 83 places, 123 transitions, 1855 flow. Second operand 6 states and 725 transitions. [2023-09-01 09:46:38,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 178 transitions, 2686 flow [2023-09-01 09:46:39,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 178 transitions, 2581 flow, removed 20 selfloop flow, removed 6 redundant places. [2023-09-01 09:46:39,140 INFO L231 Difference]: Finished difference. Result has 81 places, 131 transitions, 2029 flow [2023-09-01 09:46:39,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1750, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2029, PETRI_PLACES=81, PETRI_TRANSITIONS=131} [2023-09-01 09:46:39,141 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 37 predicate places. [2023-09-01 09:46:39,141 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 131 transitions, 2029 flow [2023-09-01 09:46:39,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 111.125) internal successors, (889), 8 states have internal predecessors, (889), 0 states have call successors, (0), 0 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 09:46:39,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:46:39,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:46:39,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 09:46:39,142 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 09:46:39,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:46:39,142 INFO L85 PathProgramCache]: Analyzing trace with hash 874775161, now seen corresponding path program 2 times [2023-09-01 09:46:39,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:46:39,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359065399] [2023-09-01 09:46:39,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:46:39,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:46:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:46:39,692 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 09:46:39,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:46:39,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359065399] [2023-09-01 09:46:39,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359065399] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:46:39,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:46:39,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 09:46:39,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262637150] [2023-09-01 09:46:39,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:46:39,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 09:46:39,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:46:39,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 09:46:39,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-09-01 09:46:39,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 235 [2023-09-01 09:46:39,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 131 transitions, 2029 flow. Second operand has 8 states, 8 states have (on average 101.25) internal successors, (810), 8 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 09:46:39,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:46:39,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 235 [2023-09-01 09:46:39,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:46:41,985 INFO L130 PetriNetUnfolder]: 16353/22510 cut-off events. [2023-09-01 09:46:41,985 INFO L131 PetriNetUnfolder]: For 209669/209669 co-relation queries the response was YES. [2023-09-01 09:46:42,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134094 conditions, 22510 events. 16353/22510 cut-off events. For 209669/209669 co-relation queries the response was YES. Maximal size of possible extension queue 736. Compared 122392 event pairs, 1419 based on Foata normal form. 240/22750 useless extension candidates. Maximal degree in co-relation 134054. Up to 12981 conditions per place. [2023-09-01 09:46:42,144 INFO L137 encePairwiseOnDemand]: 221/235 looper letters, 127 selfloop transitions, 127 changer transitions 32/286 dead transitions. [2023-09-01 09:46:42,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 286 transitions, 4158 flow [2023-09-01 09:46:42,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 09:46:42,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 09:46:42,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1136 transitions. [2023-09-01 09:46:42,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48340425531914893 [2023-09-01 09:46:42,146 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1136 transitions. [2023-09-01 09:46:42,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1136 transitions. [2023-09-01 09:46:42,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:46:42,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1136 transitions. [2023-09-01 09:46:42,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 113.6) internal successors, (1136), 10 states have internal predecessors, (1136), 0 states have call successors, (0), 0 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 09:46:42,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 235.0) internal successors, (2585), 11 states have internal predecessors, (2585), 0 states have call successors, (0), 0 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 09:46:42,151 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 235.0) internal successors, (2585), 11 states have internal predecessors, (2585), 0 states have call successors, (0), 0 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 09:46:42,151 INFO L175 Difference]: Start difference. First operand has 81 places, 131 transitions, 2029 flow. Second operand 10 states and 1136 transitions. [2023-09-01 09:46:42,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 286 transitions, 4158 flow [2023-09-01 09:46:42,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 286 transitions, 4048 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-09-01 09:46:42,528 INFO L231 Difference]: Finished difference. Result has 93 places, 189 transitions, 3325 flow [2023-09-01 09:46:42,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1925, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3325, PETRI_PLACES=93, PETRI_TRANSITIONS=189} [2023-09-01 09:46:42,529 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 49 predicate places. [2023-09-01 09:46:42,529 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 189 transitions, 3325 flow [2023-09-01 09:46:42,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 101.25) internal successors, (810), 8 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 09:46:42,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:46:42,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:46:42,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 09:46:42,529 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 09:46:42,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:46:42,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1408889429, now seen corresponding path program 3 times [2023-09-01 09:46:42,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:46:42,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684762058] [2023-09-01 09:46:42,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:46:42,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:46:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:46:43,351 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 09:46:43,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:46:43,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684762058] [2023-09-01 09:46:43,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684762058] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:46:43,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:46:43,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 09:46:43,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762950251] [2023-09-01 09:46:43,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:46:43,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 09:46:43,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:46:43,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 09:46:43,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-09-01 09:46:43,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 235 [2023-09-01 09:46:43,431 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 189 transitions, 3325 flow. Second operand has 8 states, 8 states have (on average 104.25) internal successors, (834), 8 states have internal predecessors, (834), 0 states have call successors, (0), 0 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 09:46:43,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:46:43,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 235 [2023-09-01 09:46:43,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:46:45,920 INFO L130 PetriNetUnfolder]: 15730/21788 cut-off events. [2023-09-01 09:46:45,921 INFO L131 PetriNetUnfolder]: For 299346/299912 co-relation queries the response was YES. [2023-09-01 09:46:45,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150182 conditions, 21788 events. 15730/21788 cut-off events. For 299346/299912 co-relation queries the response was YES. Maximal size of possible extension queue 820. Compared 122824 event pairs, 1779 based on Foata normal form. 521/21760 useless extension candidates. Maximal degree in co-relation 150135. Up to 15142 conditions per place. [2023-09-01 09:46:46,071 INFO L137 encePairwiseOnDemand]: 224/235 looper letters, 186 selfloop transitions, 82 changer transitions 26/313 dead transitions. [2023-09-01 09:46:46,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 313 transitions, 5418 flow [2023-09-01 09:46:46,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 09:46:46,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 09:46:46,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1032 transitions. [2023-09-01 09:46:46,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4879432624113475 [2023-09-01 09:46:46,074 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1032 transitions. [2023-09-01 09:46:46,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1032 transitions. [2023-09-01 09:46:46,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:46:46,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1032 transitions. [2023-09-01 09:46:46,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 114.66666666666667) internal successors, (1032), 9 states have internal predecessors, (1032), 0 states have call successors, (0), 0 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 09:46:46,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 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 09:46:46,078 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 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 09:46:46,078 INFO L175 Difference]: Start difference. First operand has 93 places, 189 transitions, 3325 flow. Second operand 9 states and 1032 transitions. [2023-09-01 09:46:46,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 313 transitions, 5418 flow [2023-09-01 09:46:47,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 313 transitions, 5095 flow, removed 139 selfloop flow, removed 3 redundant places. [2023-09-01 09:46:47,019 INFO L231 Difference]: Finished difference. Result has 100 places, 216 transitions, 3843 flow [2023-09-01 09:46:47,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3100, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3843, PETRI_PLACES=100, PETRI_TRANSITIONS=216} [2023-09-01 09:46:47,020 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 56 predicate places. [2023-09-01 09:46:47,020 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 216 transitions, 3843 flow [2023-09-01 09:46:47,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 104.25) internal successors, (834), 8 states have internal predecessors, (834), 0 states have call successors, (0), 0 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 09:46:47,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:46:47,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:46:47,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 09:46:47,021 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 09:46:47,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:46:47,021 INFO L85 PathProgramCache]: Analyzing trace with hash -922116229, now seen corresponding path program 4 times [2023-09-01 09:46:47,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:46:47,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464536566] [2023-09-01 09:46:47,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:46:47,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:46:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:46:47,348 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 09:46:47,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:46:47,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464536566] [2023-09-01 09:46:47,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464536566] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:46:47,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:46:47,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 09:46:47,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050203703] [2023-09-01 09:46:47,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:46:47,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 09:46:47,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:46:47,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 09:46:47,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-09-01 09:46:47,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 235 [2023-09-01 09:46:47,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 216 transitions, 3843 flow. Second operand has 8 states, 8 states have (on average 112.125) internal successors, (897), 8 states have internal predecessors, (897), 0 states have call successors, (0), 0 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 09:46:47,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:46:47,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 235 [2023-09-01 09:46:47,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:46:50,613 INFO L130 PetriNetUnfolder]: 16768/24302 cut-off events. [2023-09-01 09:46:50,614 INFO L131 PetriNetUnfolder]: For 378924/380345 co-relation queries the response was YES. [2023-09-01 09:46:50,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174542 conditions, 24302 events. 16768/24302 cut-off events. For 378924/380345 co-relation queries the response was YES. Maximal size of possible extension queue 1094. Compared 154903 event pairs, 2481 based on Foata normal form. 686/23894 useless extension candidates. Maximal degree in co-relation 174490. Up to 12191 conditions per place. [2023-09-01 09:46:50,945 INFO L137 encePairwiseOnDemand]: 227/235 looper letters, 147 selfloop transitions, 74 changer transitions 12/289 dead transitions. [2023-09-01 09:46:50,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 289 transitions, 5281 flow [2023-09-01 09:46:50,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 09:46:50,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 09:46:50,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 845 transitions. [2023-09-01 09:46:50,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513677811550152 [2023-09-01 09:46:50,947 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 845 transitions. [2023-09-01 09:46:50,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 845 transitions. [2023-09-01 09:46:50,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:46:50,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 845 transitions. [2023-09-01 09:46:50,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 120.71428571428571) internal successors, (845), 7 states have internal predecessors, (845), 0 states have call successors, (0), 0 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 09:46:50,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 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 09:46:50,951 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 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 09:46:50,951 INFO L175 Difference]: Start difference. First operand has 100 places, 216 transitions, 3843 flow. Second operand 7 states and 845 transitions. [2023-09-01 09:46:50,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 289 transitions, 5281 flow [2023-09-01 09:46:52,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 289 transitions, 5023 flow, removed 77 selfloop flow, removed 8 redundant places. [2023-09-01 09:46:52,192 INFO L231 Difference]: Finished difference. Result has 99 places, 238 transitions, 4341 flow [2023-09-01 09:46:52,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3649, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4341, PETRI_PLACES=99, PETRI_TRANSITIONS=238} [2023-09-01 09:46:52,192 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 55 predicate places. [2023-09-01 09:46:52,193 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 238 transitions, 4341 flow [2023-09-01 09:46:52,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 112.125) internal successors, (897), 8 states have internal predecessors, (897), 0 states have call successors, (0), 0 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 09:46:52,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:46:52,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:46:52,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 09:46:52,193 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 09:46:52,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:46:52,194 INFO L85 PathProgramCache]: Analyzing trace with hash 628459863, now seen corresponding path program 5 times [2023-09-01 09:46:52,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:46:52,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047093395] [2023-09-01 09:46:52,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:46:52,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:46:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:46:52,692 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 09:46:52,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:46:52,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047093395] [2023-09-01 09:46:52,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047093395] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:46:52,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:46:52,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 09:46:52,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861345183] [2023-09-01 09:46:52,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:46:52,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 09:46:52,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:46:52,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 09:46:52,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-09-01 09:46:52,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 235 [2023-09-01 09:46:52,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 238 transitions, 4341 flow. Second operand has 8 states, 8 states have (on average 112.125) internal successors, (897), 8 states have internal predecessors, (897), 0 states have call successors, (0), 0 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 09:46:52,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:46:52,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 235 [2023-09-01 09:46:52,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:46:55,792 INFO L130 PetriNetUnfolder]: 17220/25147 cut-off events. [2023-09-01 09:46:55,792 INFO L131 PetriNetUnfolder]: For 374028/375819 co-relation queries the response was YES. [2023-09-01 09:46:55,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179110 conditions, 25147 events. 17220/25147 cut-off events. For 374028/375819 co-relation queries the response was YES. Maximal size of possible extension queue 1119. Compared 162322 event pairs, 2996 based on Foata normal form. 883/24979 useless extension candidates. Maximal degree in co-relation 179060. Up to 12288 conditions per place. [2023-09-01 09:46:56,029 INFO L137 encePairwiseOnDemand]: 227/235 looper letters, 180 selfloop transitions, 104 changer transitions 23/363 dead transitions. [2023-09-01 09:46:56,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 363 transitions, 6939 flow [2023-09-01 09:46:56,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 09:46:56,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 09:46:56,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 966 transitions. [2023-09-01 09:46:56,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138297872340426 [2023-09-01 09:46:56,032 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 966 transitions. [2023-09-01 09:46:56,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 966 transitions. [2023-09-01 09:46:56,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:46:56,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 966 transitions. [2023-09-01 09:46:56,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 120.75) internal successors, (966), 8 states have internal predecessors, (966), 0 states have call successors, (0), 0 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 09:46:56,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 0 states have call successors, (0), 0 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 09:46:56,036 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 0 states have call successors, (0), 0 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 09:46:56,036 INFO L175 Difference]: Start difference. First operand has 99 places, 238 transitions, 4341 flow. Second operand 8 states and 966 transitions. [2023-09-01 09:46:56,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 363 transitions, 6939 flow [2023-09-01 09:46:56,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 363 transitions, 6920 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-09-01 09:46:56,800 INFO L231 Difference]: Finished difference. Result has 108 places, 278 transitions, 5707 flow [2023-09-01 09:46:56,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=4326, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5707, PETRI_PLACES=108, PETRI_TRANSITIONS=278} [2023-09-01 09:46:56,800 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 64 predicate places. [2023-09-01 09:46:56,800 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 278 transitions, 5707 flow [2023-09-01 09:46:56,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 112.125) internal successors, (897), 8 states have internal predecessors, (897), 0 states have call successors, (0), 0 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 09:46:56,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:46:56,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:46:56,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 09:46:56,801 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 09:46:56,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:46:56,801 INFO L85 PathProgramCache]: Analyzing trace with hash 935965889, now seen corresponding path program 1 times [2023-09-01 09:46:56,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:46:56,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784321290] [2023-09-01 09:46:56,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:46:56,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:46:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:46:56,904 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 09:46:56,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:46:56,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784321290] [2023-09-01 09:46:56,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784321290] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:46:56,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:46:56,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:46:56,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538941770] [2023-09-01 09:46:56,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:46:56,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:46:56,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:46:56,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:46:56,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:46:56,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 235 [2023-09-01 09:46:56,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 278 transitions, 5707 flow. Second operand has 5 states, 5 states have (on average 113.4) internal successors, (567), 5 states have internal predecessors, (567), 0 states have call successors, (0), 0 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 09:46:56,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:46:56,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 235 [2023-09-01 09:46:56,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:47:01,453 INFO L130 PetriNetUnfolder]: 23774/34462 cut-off events. [2023-09-01 09:47:01,453 INFO L131 PetriNetUnfolder]: For 680421/683357 co-relation queries the response was YES. [2023-09-01 09:47:01,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262985 conditions, 34462 events. 23774/34462 cut-off events. For 680421/683357 co-relation queries the response was YES. Maximal size of possible extension queue 1598. Compared 231989 event pairs, 4229 based on Foata normal form. 1860/35613 useless extension candidates. Maximal degree in co-relation 262930. Up to 17214 conditions per place. [2023-09-01 09:47:01,683 INFO L137 encePairwiseOnDemand]: 231/235 looper letters, 299 selfloop transitions, 3 changer transitions 158/507 dead transitions. [2023-09-01 09:47:01,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 507 transitions, 11475 flow [2023-09-01 09:47:01,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:47:01,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:47:01,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 608 transitions. [2023-09-01 09:47:01,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5174468085106383 [2023-09-01 09:47:01,684 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 608 transitions. [2023-09-01 09:47:01,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 608 transitions. [2023-09-01 09:47:01,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:47:01,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 608 transitions. [2023-09-01 09:47:01,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 121.6) internal successors, (608), 5 states have internal predecessors, (608), 0 states have call successors, (0), 0 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 09:47:01,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 235.0) internal successors, (1410), 6 states have internal predecessors, (1410), 0 states have call successors, (0), 0 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 09:47:01,687 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 235.0) internal successors, (1410), 6 states have internal predecessors, (1410), 0 states have call successors, (0), 0 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 09:47:01,687 INFO L175 Difference]: Start difference. First operand has 108 places, 278 transitions, 5707 flow. Second operand 5 states and 608 transitions. [2023-09-01 09:47:01,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 507 transitions, 11475 flow [2023-09-01 09:47:02,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 507 transitions, 11434 flow, removed 20 selfloop flow, removed 3 redundant places. [2023-09-01 09:47:02,692 INFO L231 Difference]: Finished difference. Result has 110 places, 245 transitions, 4938 flow [2023-09-01 09:47:02,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=5684, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4938, PETRI_PLACES=110, PETRI_TRANSITIONS=245} [2023-09-01 09:47:02,693 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 66 predicate places. [2023-09-01 09:47:02,693 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 245 transitions, 4938 flow [2023-09-01 09:47:02,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.4) internal successors, (567), 5 states have internal predecessors, (567), 0 states have call successors, (0), 0 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 09:47:02,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:47:02,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:47:02,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-09-01 09:47:02,693 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 09:47:02,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:47:02,694 INFO L85 PathProgramCache]: Analyzing trace with hash -938231587, now seen corresponding path program 2 times [2023-09-01 09:47:02,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:47:02,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896936240] [2023-09-01 09:47:02,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:47:02,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:47:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:47:02,919 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 09:47:02,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:47:02,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896936240] [2023-09-01 09:47:02,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896936240] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:47:02,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:47:02,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:47:02,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775940889] [2023-09-01 09:47:02,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:47:02,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 09:47:02,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:47:02,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 09:47:02,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 09:47:02,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 235 [2023-09-01 09:47:02,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 245 transitions, 4938 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 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 09:47:02,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:47:02,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 235 [2023-09-01 09:47:02,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:47:05,421 INFO L130 PetriNetUnfolder]: 12394/18504 cut-off events. [2023-09-01 09:47:05,421 INFO L131 PetriNetUnfolder]: For 424484/428977 co-relation queries the response was YES. [2023-09-01 09:47:05,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140220 conditions, 18504 events. 12394/18504 cut-off events. For 424484/428977 co-relation queries the response was YES. Maximal size of possible extension queue 1020. Compared 123562 event pairs, 3031 based on Foata normal form. 1580/19204 useless extension candidates. Maximal degree in co-relation 140164. Up to 15125 conditions per place. [2023-09-01 09:47:05,542 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 252 selfloop transitions, 5 changer transitions 2/317 dead transitions. [2023-09-01 09:47:05,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 317 transitions, 6973 flow [2023-09-01 09:47:05,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:47:05,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:47:05,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 371 transitions. [2023-09-01 09:47:05,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526241134751773 [2023-09-01 09:47:05,543 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 371 transitions. [2023-09-01 09:47:05,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 371 transitions. [2023-09-01 09:47:05,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:47:05,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 371 transitions. [2023-09-01 09:47:05,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 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 09:47:05,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 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 09:47:05,545 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 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 09:47:05,545 INFO L175 Difference]: Start difference. First operand has 110 places, 245 transitions, 4938 flow. Second operand 3 states and 371 transitions. [2023-09-01 09:47:05,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 317 transitions, 6973 flow [2023-09-01 09:47:05,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 317 transitions, 6823 flow, removed 38 selfloop flow, removed 4 redundant places. [2023-09-01 09:47:05,916 INFO L231 Difference]: Finished difference. Result has 108 places, 225 transitions, 4323 flow [2023-09-01 09:47:05,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=4290, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=4323, PETRI_PLACES=108, PETRI_TRANSITIONS=225} [2023-09-01 09:47:05,917 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 64 predicate places. [2023-09-01 09:47:05,917 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 225 transitions, 4323 flow [2023-09-01 09:47:05,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 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 09:47:05,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:47:05,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:47:05,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-09-01 09:47:05,917 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 09:47:05,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:47:05,917 INFO L85 PathProgramCache]: Analyzing trace with hash 121380588, now seen corresponding path program 1 times [2023-09-01 09:47:05,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:47:05,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633315052] [2023-09-01 09:47:05,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:47:05,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:47:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:47:06,142 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 09:47:06,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:47:06,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633315052] [2023-09-01 09:47:06,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633315052] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:47:06,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:47:06,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:47:06,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037949793] [2023-09-01 09:47:06,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:47:06,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:47:06,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:47:06,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:47:06,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:47:06,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 235 [2023-09-01 09:47:06,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 225 transitions, 4323 flow. Second operand has 4 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 0 states have call successors, (0), 0 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 09:47:06,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:47:06,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 235 [2023-09-01 09:47:06,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:47:07,473 INFO L130 PetriNetUnfolder]: 6157/9742 cut-off events. [2023-09-01 09:47:07,473 INFO L131 PetriNetUnfolder]: For 212581/214755 co-relation queries the response was YES. [2023-09-01 09:47:07,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76314 conditions, 9742 events. 6157/9742 cut-off events. For 212581/214755 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 63624 event pairs, 966 based on Foata normal form. 1284/10729 useless extension candidates. Maximal degree in co-relation 76259. Up to 4948 conditions per place. [2023-09-01 09:47:07,543 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 256 selfloop transitions, 9 changer transitions 5/325 dead transitions. [2023-09-01 09:47:07,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 325 transitions, 7017 flow [2023-09-01 09:47:07,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 09:47:07,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 09:47:07,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 496 transitions. [2023-09-01 09:47:07,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5276595744680851 [2023-09-01 09:47:07,544 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 496 transitions. [2023-09-01 09:47:07,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 496 transitions. [2023-09-01 09:47:07,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:47:07,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 496 transitions. [2023-09-01 09:47:07,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 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 09:47:07,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 235.0) internal successors, (1175), 5 states have internal predecessors, (1175), 0 states have call successors, (0), 0 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 09:47:07,546 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 235.0) internal successors, (1175), 5 states have internal predecessors, (1175), 0 states have call successors, (0), 0 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 09:47:07,546 INFO L175 Difference]: Start difference. First operand has 108 places, 225 transitions, 4323 flow. Second operand 4 states and 496 transitions. [2023-09-01 09:47:07,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 325 transitions, 7017 flow [2023-09-01 09:47:07,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 325 transitions, 6711 flow, removed 46 selfloop flow, removed 6 redundant places. [2023-09-01 09:47:07,689 INFO L231 Difference]: Finished difference. Result has 106 places, 189 transitions, 3402 flow [2023-09-01 09:47:07,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3373, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3402, PETRI_PLACES=106, PETRI_TRANSITIONS=189} [2023-09-01 09:47:07,689 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 62 predicate places. [2023-09-01 09:47:07,689 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 189 transitions, 3402 flow [2023-09-01 09:47:07,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 0 states have call successors, (0), 0 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 09:47:07,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:47:07,690 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] [2023-09-01 09:47:07,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-09-01 09:47:07,690 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 09:47:07,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:47:07,691 INFO L85 PathProgramCache]: Analyzing trace with hash 2016177905, now seen corresponding path program 1 times [2023-09-01 09:47:07,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:47:07,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639542921] [2023-09-01 09:47:07,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:47:07,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:47:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:47:08,016 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 09:47:08,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:47:08,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639542921] [2023-09-01 09:47:08,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639542921] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:47:08,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:47:08,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:47:08,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120978374] [2023-09-01 09:47:08,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:47:08,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:47:08,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:47:08,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:47:08,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:47:08,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 235 [2023-09-01 09:47:08,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 189 transitions, 3402 flow. Second operand has 5 states, 5 states have (on average 105.2) internal successors, (526), 5 states have internal predecessors, (526), 0 states have call successors, (0), 0 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 09:47:08,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:47:08,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 235 [2023-09-01 09:47:08,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:47:09,968 INFO L130 PetriNetUnfolder]: 9823/15380 cut-off events. [2023-09-01 09:47:09,969 INFO L131 PetriNetUnfolder]: For 245367/245510 co-relation queries the response was YES. [2023-09-01 09:47:10,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119350 conditions, 15380 events. 9823/15380 cut-off events. For 245367/245510 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 100297 event pairs, 2584 based on Foata normal form. 225/15576 useless extension candidates. Maximal degree in co-relation 119296. Up to 7730 conditions per place. [2023-09-01 09:47:10,048 INFO L137 encePairwiseOnDemand]: 228/235 looper letters, 131 selfloop transitions, 22 changer transitions 133/289 dead transitions. [2023-09-01 09:47:10,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 289 transitions, 5564 flow [2023-09-01 09:47:10,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 09:47:10,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 09:47:10,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 687 transitions. [2023-09-01 09:47:10,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48723404255319147 [2023-09-01 09:47:10,049 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 687 transitions. [2023-09-01 09:47:10,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 687 transitions. [2023-09-01 09:47:10,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:47:10,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 687 transitions. [2023-09-01 09:47:10,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 0 states have call successors, (0), 0 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 09:47:10,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 0 states have call successors, (0), 0 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 09:47:10,051 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 0 states have call successors, (0), 0 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 09:47:10,051 INFO L175 Difference]: Start difference. First operand has 106 places, 189 transitions, 3402 flow. Second operand 6 states and 687 transitions. [2023-09-01 09:47:10,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 289 transitions, 5564 flow [2023-09-01 09:47:10,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 289 transitions, 5530 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-09-01 09:47:10,278 INFO L231 Difference]: Finished difference. Result has 112 places, 121 transitions, 2056 flow [2023-09-01 09:47:10,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3384, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2056, PETRI_PLACES=112, PETRI_TRANSITIONS=121} [2023-09-01 09:47:10,279 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 68 predicate places. [2023-09-01 09:47:10,279 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 121 transitions, 2056 flow [2023-09-01 09:47:10,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.2) internal successors, (526), 5 states have internal predecessors, (526), 0 states have call successors, (0), 0 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 09:47:10,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:47:10,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:47:10,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-09-01 09:47:10,280 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 09:47:10,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:47:10,280 INFO L85 PathProgramCache]: Analyzing trace with hash -379899133, now seen corresponding path program 1 times [2023-09-01 09:47:10,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:47:10,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291637233] [2023-09-01 09:47:10,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:47:10,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:47:10,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:47:10,399 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 09:47:10,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:47:10,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291637233] [2023-09-01 09:47:10,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291637233] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:47:10,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:47:10,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 09:47:10,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392541455] [2023-09-01 09:47:10,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:47:10,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 09:47:10,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:47:10,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 09:47:10,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-09-01 09:47:10,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 235 [2023-09-01 09:47:10,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 121 transitions, 2056 flow. Second operand has 5 states, 5 states have (on average 113.8) internal successors, (569), 5 states have internal predecessors, (569), 0 states have call successors, (0), 0 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 09:47:10,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:47:10,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 235 [2023-09-01 09:47:10,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:47:11,222 INFO L130 PetriNetUnfolder]: 3876/6367 cut-off events. [2023-09-01 09:47:11,222 INFO L131 PetriNetUnfolder]: For 121114/122137 co-relation queries the response was YES. [2023-09-01 09:47:11,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48564 conditions, 6367 events. 3876/6367 cut-off events. For 121114/122137 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 41548 event pairs, 553 based on Foata normal form. 808/6973 useless extension candidates. Maximal degree in co-relation 48507. Up to 2934 conditions per place. [2023-09-01 09:47:11,268 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 163 selfloop transitions, 13 changer transitions 12/218 dead transitions. [2023-09-01 09:47:11,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 218 transitions, 4180 flow [2023-09-01 09:47:11,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 09:47:11,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 09:47:11,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 619 transitions. [2023-09-01 09:47:11,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5268085106382979 [2023-09-01 09:47:11,269 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 619 transitions. [2023-09-01 09:47:11,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 619 transitions. [2023-09-01 09:47:11,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:47:11,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 619 transitions. [2023-09-01 09:47:11,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 123.8) internal successors, (619), 5 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:47:11,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 235.0) internal successors, (1410), 6 states have internal predecessors, (1410), 0 states have call successors, (0), 0 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 09:47:11,271 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 235.0) internal successors, (1410), 6 states have internal predecessors, (1410), 0 states have call successors, (0), 0 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 09:47:11,272 INFO L175 Difference]: Start difference. First operand has 112 places, 121 transitions, 2056 flow. Second operand 5 states and 619 transitions. [2023-09-01 09:47:11,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 218 transitions, 4180 flow [2023-09-01 09:47:11,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 218 transitions, 4022 flow, removed 45 selfloop flow, removed 7 redundant places. [2023-09-01 09:47:11,461 INFO L231 Difference]: Finished difference. Result has 108 places, 115 transitions, 1833 flow [2023-09-01 09:47:11,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1823, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1833, PETRI_PLACES=108, PETRI_TRANSITIONS=115} [2023-09-01 09:47:11,461 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 64 predicate places. [2023-09-01 09:47:11,461 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 115 transitions, 1833 flow [2023-09-01 09:47:11,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.8) internal successors, (569), 5 states have internal predecessors, (569), 0 states have call successors, (0), 0 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 09:47:11,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:47:11,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:47:11,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-09-01 09:47:11,462 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 09:47:11,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:47:11,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1934627257, now seen corresponding path program 1 times [2023-09-01 09:47:11,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:47:11,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011262960] [2023-09-01 09:47:11,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:47:11,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:47:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:47:11,634 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 09:47:11,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:47:11,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011262960] [2023-09-01 09:47:11,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011262960] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:47:11,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:47:11,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 09:47:11,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136029005] [2023-09-01 09:47:11,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:47:11,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 09:47:11,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:47:11,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 09:47:11,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-09-01 09:47:11,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 235 [2023-09-01 09:47:11,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 115 transitions, 1833 flow. Second operand has 6 states, 6 states have (on average 113.5) internal successors, (681), 6 states have internal predecessors, (681), 0 states have call successors, (0), 0 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 09:47:11,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:47:11,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 235 [2023-09-01 09:47:11,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:47:12,302 INFO L130 PetriNetUnfolder]: 3559/5767 cut-off events. [2023-09-01 09:47:12,302 INFO L131 PetriNetUnfolder]: For 100137/101151 co-relation queries the response was YES. [2023-09-01 09:47:12,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44886 conditions, 5767 events. 3559/5767 cut-off events. For 100137/101151 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 37160 event pairs, 506 based on Foata normal form. 504/6084 useless extension candidates. Maximal degree in co-relation 44831. Up to 2604 conditions per place. [2023-09-01 09:47:12,397 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 120 selfloop transitions, 17 changer transitions 51/209 dead transitions. [2023-09-01 09:47:12,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 209 transitions, 3871 flow [2023-09-01 09:47:12,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 09:47:12,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 09:47:12,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 729 transitions. [2023-09-01 09:47:12,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170212765957447 [2023-09-01 09:47:12,398 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 729 transitions. [2023-09-01 09:47:12,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 729 transitions. [2023-09-01 09:47:12,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:47:12,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 729 transitions. [2023-09-01 09:47:12,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 121.5) internal successors, (729), 6 states have internal predecessors, (729), 0 states have call successors, (0), 0 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 09:47:12,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 0 states have call successors, (0), 0 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 09:47:12,400 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 0 states have call successors, (0), 0 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 09:47:12,400 INFO L175 Difference]: Start difference. First operand has 108 places, 115 transitions, 1833 flow. Second operand 6 states and 729 transitions. [2023-09-01 09:47:12,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 209 transitions, 3871 flow [2023-09-01 09:47:12,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 209 transitions, 3640 flow, removed 90 selfloop flow, removed 5 redundant places. [2023-09-01 09:47:12,663 INFO L231 Difference]: Finished difference. Result has 109 places, 88 transitions, 1264 flow [2023-09-01 09:47:12,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1634, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1264, PETRI_PLACES=109, PETRI_TRANSITIONS=88} [2023-09-01 09:47:12,663 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 65 predicate places. [2023-09-01 09:47:12,664 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 88 transitions, 1264 flow [2023-09-01 09:47:12,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.5) internal successors, (681), 6 states have internal predecessors, (681), 0 states have call successors, (0), 0 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 09:47:12,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:47:12,664 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] [2023-09-01 09:47:12,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-09-01 09:47:12,664 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 09:47:12,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:47:12,664 INFO L85 PathProgramCache]: Analyzing trace with hash -465416219, now seen corresponding path program 1 times [2023-09-01 09:47:12,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:47:12,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786200581] [2023-09-01 09:47:12,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:47:12,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:47:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:47:12,948 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 09:47:12,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:47:12,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786200581] [2023-09-01 09:47:12,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786200581] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:47:12,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:47:12,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 09:47:12,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465294514] [2023-09-01 09:47:12,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:47:12,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 09:47:12,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:47:12,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 09:47:12,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 09:47:13,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 235 [2023-09-01 09:47:13,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 88 transitions, 1264 flow. Second operand has 6 states, 6 states have (on average 103.5) internal successors, (621), 6 states have internal predecessors, (621), 0 states have call successors, (0), 0 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 09:47:13,003 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:47:13,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 235 [2023-09-01 09:47:13,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:47:13,378 INFO L130 PetriNetUnfolder]: 1469/2388 cut-off events. [2023-09-01 09:47:13,378 INFO L131 PetriNetUnfolder]: For 29985/29995 co-relation queries the response was YES. [2023-09-01 09:47:13,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17237 conditions, 2388 events. 1469/2388 cut-off events. For 29985/29995 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 11826 event pairs, 209 based on Foata normal form. 3/2380 useless extension candidates. Maximal degree in co-relation 17188. Up to 1515 conditions per place. [2023-09-01 09:47:13,389 INFO L137 encePairwiseOnDemand]: 223/235 looper letters, 54 selfloop transitions, 9 changer transitions 106/171 dead transitions. [2023-09-01 09:47:13,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 171 transitions, 2606 flow [2023-09-01 09:47:13,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 09:47:13,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 09:47:13,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 769 transitions. [2023-09-01 09:47:13,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4674772036474164 [2023-09-01 09:47:13,390 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 769 transitions. [2023-09-01 09:47:13,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 769 transitions. [2023-09-01 09:47:13,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:47:13,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 769 transitions. [2023-09-01 09:47:13,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 0 states have call successors, (0), 0 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 09:47:13,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 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 09:47:13,392 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 235.0) internal successors, (1880), 8 states have internal predecessors, (1880), 0 states have call successors, (0), 0 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 09:47:13,392 INFO L175 Difference]: Start difference. First operand has 109 places, 88 transitions, 1264 flow. Second operand 7 states and 769 transitions. [2023-09-01 09:47:13,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 171 transitions, 2606 flow [2023-09-01 09:47:13,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 171 transitions, 2147 flow, removed 145 selfloop flow, removed 20 redundant places. [2023-09-01 09:47:13,443 INFO L231 Difference]: Finished difference. Result has 97 places, 53 transitions, 526 flow [2023-09-01 09:47:13,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=526, PETRI_PLACES=97, PETRI_TRANSITIONS=53} [2023-09-01 09:47:13,443 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 53 predicate places. [2023-09-01 09:47:13,443 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 53 transitions, 526 flow [2023-09-01 09:47:13,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 103.5) internal successors, (621), 6 states have internal predecessors, (621), 0 states have call successors, (0), 0 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 09:47:13,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:47:13,444 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] [2023-09-01 09:47:13,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-09-01 09:47:13,444 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 09:47:13,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:47:13,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1818452003, now seen corresponding path program 2 times [2023-09-01 09:47:13,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:47:13,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872077115] [2023-09-01 09:47:13,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:47:13,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:47:13,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:47:14,296 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 09:47:14,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:47:14,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872077115] [2023-09-01 09:47:14,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872077115] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:47:14,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:47:14,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 09:47:14,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766612685] [2023-09-01 09:47:14,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:47:14,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 09:47:14,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:47:14,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 09:47:14,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-09-01 09:47:14,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 235 [2023-09-01 09:47:14,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 53 transitions, 526 flow. Second operand has 9 states, 9 states have (on average 101.11111111111111) internal successors, (910), 9 states have internal predecessors, (910), 0 states have call successors, (0), 0 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 09:47:14,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:47:14,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 235 [2023-09-01 09:47:14,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:47:14,675 INFO L130 PetriNetUnfolder]: 491/889 cut-off events. [2023-09-01 09:47:14,675 INFO L131 PetriNetUnfolder]: For 5704/5704 co-relation queries the response was YES. [2023-09-01 09:47:14,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4902 conditions, 889 events. 491/889 cut-off events. For 5704/5704 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3999 event pairs, 84 based on Foata normal form. 1/890 useless extension candidates. Maximal degree in co-relation 4874. Up to 334 conditions per place. [2023-09-01 09:47:14,678 INFO L137 encePairwiseOnDemand]: 224/235 looper letters, 71 selfloop transitions, 13 changer transitions 50/134 dead transitions. [2023-09-01 09:47:14,678 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 134 transitions, 1316 flow [2023-09-01 09:47:14,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 09:47:14,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 09:47:14,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 965 transitions. [2023-09-01 09:47:14,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4562647754137116 [2023-09-01 09:47:14,679 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 965 transitions. [2023-09-01 09:47:14,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 965 transitions. [2023-09-01 09:47:14,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:47:14,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 965 transitions. [2023-09-01 09:47:14,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 107.22222222222223) internal successors, (965), 9 states have internal predecessors, (965), 0 states have call successors, (0), 0 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 09:47:14,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 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 09:47:14,682 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 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 09:47:14,682 INFO L175 Difference]: Start difference. First operand has 97 places, 53 transitions, 526 flow. Second operand 9 states and 965 transitions. [2023-09-01 09:47:14,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 134 transitions, 1316 flow [2023-09-01 09:47:14,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 134 transitions, 1156 flow, removed 20 selfloop flow, removed 22 redundant places. [2023-09-01 09:47:14,691 INFO L231 Difference]: Finished difference. Result has 79 places, 51 transitions, 417 flow [2023-09-01 09:47:14,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=417, PETRI_PLACES=79, PETRI_TRANSITIONS=51} [2023-09-01 09:47:14,692 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 35 predicate places. [2023-09-01 09:47:14,692 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 51 transitions, 417 flow [2023-09-01 09:47:14,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 101.11111111111111) internal successors, (910), 9 states have internal predecessors, (910), 0 states have call successors, (0), 0 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 09:47:14,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:47:14,692 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] [2023-09-01 09:47:14,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-09-01 09:47:14,692 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-09-01 09:47:14,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:47:14,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1875746827, now seen corresponding path program 3 times [2023-09-01 09:47:14,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:47:14,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770848002] [2023-09-01 09:47:14,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:47:14,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:47:14,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 09:47:14,724 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 09:47:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 09:47:14,789 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 09:47:14,789 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 09:47:14,790 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-09-01 09:47:14,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-09-01 09:47:14,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-09-01 09:47:14,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-09-01 09:47:14,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-09-01 09:47:14,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-09-01 09:47:14,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-09-01 09:47:14,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-09-01 09:47:14,795 INFO L445 BasicCegarLoop]: Path program histogram: [5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:47:14,798 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 09:47:14,798 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 09:47:14,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 09:47:14 BasicIcfg [2023-09-01 09:47:14,868 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 09:47:14,868 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 09:47:14,868 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 09:47:14,868 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 09:47:14,869 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:46:13" (3/4) ... [2023-09-01 09:47:14,870 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-09-01 09:47:14,937 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 09:47:14,937 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 09:47:14,938 INFO L158 Benchmark]: Toolchain (without parser) took 62468.08ms. Allocated memory was 60.8MB in the beginning and 8.2GB in the end (delta: 8.1GB). Free memory was 37.7MB in the beginning and 6.1GB in the end (delta: -6.1GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. [2023-09-01 09:47:14,938 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 50.3MB. Free memory was 28.8MB in the beginning and 28.7MB in the end (delta: 54.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 09:47:14,938 INFO L158 Benchmark]: CACSL2BoogieTranslator took 442.91ms. Allocated memory is still 60.8MB. Free memory was 37.6MB in the beginning and 27.6MB in the end (delta: 10.0MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2023-09-01 09:47:14,938 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.49ms. Allocated memory is still 60.8MB. Free memory was 27.6MB in the beginning and 39.9MB in the end (delta: -12.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 09:47:14,939 INFO L158 Benchmark]: Boogie Preprocessor took 18.03ms. Allocated memory is still 60.8MB. Free memory was 39.9MB in the beginning and 38.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:47:14,939 INFO L158 Benchmark]: RCFGBuilder took 576.94ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 38.1MB in the beginning and 46.5MB in the end (delta: -8.4MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. [2023-09-01 09:47:14,939 INFO L158 Benchmark]: TraceAbstraction took 61306.40ms. Allocated memory was 73.4MB in the beginning and 8.2GB in the end (delta: 8.1GB). Free memory was 45.7MB in the beginning and 6.2GB in the end (delta: -6.1GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. [2023-09-01 09:47:14,939 INFO L158 Benchmark]: Witness Printer took 69.45ms. Allocated memory is still 8.2GB. Free memory was 6.2GB in the beginning and 6.1GB in the end (delta: 15.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-09-01 09:47:14,943 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 50.3MB. Free memory was 28.8MB in the beginning and 28.7MB in the end (delta: 54.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 442.91ms. Allocated memory is still 60.8MB. Free memory was 37.6MB in the beginning and 27.6MB in the end (delta: 10.0MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.49ms. Allocated memory is still 60.8MB. Free memory was 27.6MB in the beginning and 39.9MB in the end (delta: -12.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.03ms. Allocated memory is still 60.8MB. Free memory was 39.9MB in the beginning and 38.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 576.94ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 38.1MB in the beginning and 46.5MB in the end (delta: -8.4MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. * TraceAbstraction took 61306.40ms. Allocated memory was 73.4MB in the beginning and 8.2GB in the end (delta: 8.1GB). Free memory was 45.7MB in the beginning and 6.2GB in the end (delta: -6.1GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. * Witness Printer took 69.45ms. Allocated memory is still 8.2GB. Free memory was 6.2GB in the beginning and 6.1GB in the end (delta: 15.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.2s, 136 PlacesBefore, 44 PlacesAfterwards, 125 TransitionsBefore, 32 TransitionsAfterwards, 2986 CoEnabledTransitionPairs, 7 FixpointIterations, 42 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 106 TotalNumberOfCompositions, 8489 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3584, independent: 3350, independent conditional: 0, independent unconditional: 3350, dependent: 234, dependent conditional: 0, dependent unconditional: 234, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1544, independent: 1511, independent conditional: 0, independent unconditional: 1511, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3584, independent: 1839, independent conditional: 0, independent unconditional: 1839, dependent: 201, dependent conditional: 0, dependent unconditional: 201, unknown: 1544, unknown conditional: 0, unknown unconditional: 1544] , Statistics on independence cache: Total cache size (in pairs): 161, Positive cache size: 143, Positive conditional cache size: 0, Positive unconditional cache size: 143, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p2_EAX = 0; [L714] 0 int __unbuffered_p3_EAX = 0; [L716] 0 int __unbuffered_p3_EBX = 0; [L718] 0 int a = 0; [L719] 0 _Bool main$tmp_guard0; [L720] 0 _Bool main$tmp_guard1; [L722] 0 int x = 0; [L724] 0 int y = 0; [L725] 0 _Bool y$flush_delayed; [L726] 0 int y$mem_tmp; [L727] 0 _Bool y$r_buff0_thd0; [L728] 0 _Bool y$r_buff0_thd1; [L729] 0 _Bool y$r_buff0_thd2; [L730] 0 _Bool y$r_buff0_thd3; [L731] 0 _Bool y$r_buff0_thd4; [L732] 0 _Bool y$r_buff1_thd0; [L733] 0 _Bool y$r_buff1_thd1; [L734] 0 _Bool y$r_buff1_thd2; [L735] 0 _Bool y$r_buff1_thd3; [L736] 0 _Bool y$r_buff1_thd4; [L737] 0 _Bool y$read_delayed; [L738] 0 int *y$read_delayed_var; [L739] 0 int y$w_buff0; [L740] 0 _Bool y$w_buff0_used; [L741] 0 int y$w_buff1; [L742] 0 _Bool y$w_buff1_used; [L744] 0 int z = 0; [L745] 0 _Bool weak$$choice0; [L746] 0 _Bool weak$$choice2; [L846] 0 pthread_t t577; [L847] FCALL, FORK 0 pthread_create(&t577, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t577, ((void *)0), P0, ((void *)0))=-2, t577={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L848] 0 pthread_t t578; [L849] FCALL, FORK 0 pthread_create(&t578, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t578, ((void *)0), P1, ((void *)0))=-1, t577={5:0}, t578={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L850] 0 pthread_t t579; [L851] FCALL, FORK 0 pthread_create(&t579, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t579, ((void *)0), P2, ((void *)0))=0, t577={5:0}, t578={6:0}, t579={7:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L852] 0 pthread_t t580; [L853] FCALL, FORK 0 pthread_create(&t580, ((void *)0), P3, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t580, ((void *)0), P3, ((void *)0))=1, t577={5:0}, t578={6:0}, t579={7:0}, t580={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L785] 3 y$w_buff1 = y$w_buff0 [L786] 3 y$w_buff0 = 2 [L787] 3 y$w_buff1_used = y$w_buff0_used [L788] 3 y$w_buff0_used = (_Bool)1 [L789] CALL 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 3 !(!expression) [L789] RET 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L790] 3 y$r_buff1_thd0 = y$r_buff0_thd0 [L791] 3 y$r_buff1_thd1 = y$r_buff0_thd1 [L792] 3 y$r_buff1_thd2 = y$r_buff0_thd2 [L793] 3 y$r_buff1_thd3 = y$r_buff0_thd3 [L794] 3 y$r_buff1_thd4 = y$r_buff0_thd4 [L795] 3 y$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L798] 3 __unbuffered_p2_EAX = z VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L815] 4 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L818] 4 __unbuffered_p3_EAX = z VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L821] 4 __unbuffered_p3_EBX = a VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L750] 1 a = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L753] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L765] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L768] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L801] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L802] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L803] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L804] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L805] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] [L808] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L810] 3 return 0; [L824] 4 y = y$w_buff0_used && y$r_buff0_thd4 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd4 ? y$w_buff1 : y) [L825] 4 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd4 ? (_Bool)0 : y$w_buff0_used [L826] 4 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd4 || y$w_buff1_used && y$r_buff1_thd4 ? (_Bool)0 : y$w_buff1_used [L827] 4 y$r_buff0_thd4 = y$w_buff0_used && y$r_buff0_thd4 ? (_Bool)0 : y$r_buff0_thd4 [L828] 4 y$r_buff1_thd4 = y$w_buff0_used && y$r_buff0_thd4 || y$w_buff1_used && y$r_buff1_thd4 ? (_Bool)0 : y$r_buff1_thd4 VAL [__unbuffered_cnt=1, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] [L758] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L760] 1 return 0; [L771] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L772] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L773] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L774] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L775] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 VAL [\result={0:0}, __unbuffered_cnt=2, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] [L831] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L833] 4 return 0; [L778] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L780] 2 return 0; [L855] 0 main$tmp_guard0 = __unbuffered_cnt == 4 [L857] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L857] RET 0 assume_abort_if_not(main$tmp_guard0) [L859] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L860] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L861] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L862] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L863] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 VAL [\result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t577={5:0}, t578={6:0}, t579={7:0}, t580={3:0}, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] [L866] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L867] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L868] 0 y$flush_delayed = weak$$choice2 [L869] 0 y$mem_tmp = y [L870] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L871] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L872] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L873] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L874] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L875] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L876] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L877] 0 main$tmp_guard1 = !(x == 2 && y == 2 && __unbuffered_p2_EAX == 0 && __unbuffered_p3_EAX == 1 && __unbuffered_p3_EBX == 0) [L878] 0 y = y$flush_delayed ? y$mem_tmp : y [L879] 0 y$flush_delayed = (_Bool)0 [L881] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=0, \old(expression)=1, \result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, expression=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=1] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 853]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 847]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 851]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 849]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 165 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 61.2s, OverallIterations: 24, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 48.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1803 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1479 mSDsluCounter, 1399 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1244 mSDsCounter, 390 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4659 IncrementalHoareTripleChecker+Invalid, 5049 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 390 mSolverCounterUnsat, 155 mSDtfsCounter, 4659 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 145 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5707occurred in iteration=15, InterpolantAutomatonStates: 149, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 444 NumberOfCodeBlocks, 444 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 393 ConstructedInterpolants, 0 QuantifiedInterpolants, 4588 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 23 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-09-01 09:47:14,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE